text: var Pos = CodeMirror.Pos;
  
  CodeMirror.defaults.rtlMoveVisually = true;
  
  function forEach(arr, f) {
    for (var i = 0, e = arr.length; i < e; ++i) f(arr[i], i);
  }
  
  function addDoc(cm, width, height) {
    var content = [], line = "";
    for (var i = 0; i < width; ++i) line += "x";
    for (var i = 0; i < height; ++i) content.push(line);
    cm.setValue(content.join("\n"));
  }
  
  function byClassName(elt, cls) {
    if (elt.getElementsByClassName) return elt.getElementsByClassName(cls);
    var found = [], re = new RegExp("\\b" + cls + "\\b");
    function search(elt) {
      if (elt.nodeType == 3) return;
      if (re.test(elt.className)) found.push(elt);
      for (var i = 0, e = elt.childNodes.length; i < e; ++i)
        search(elt.childNodes[i]);
    }
    search(elt);
    return found;
  }
  
  var ie_lt8 = /MSIE [1-7]\b/.test(navigator.userAgent);
  var ie_lt9 = /MSIE [1-8]\b/.test(navigator.userAgent);
  var mac = /Mac/.test(navigator.platform);
  var opera = /Opera\/\./.test(navigator.userAgent);
  var opera_version = opera && navigator.userAgent.match(/Version\/(\d+\.\d+)/);
  if (opera_version) opera_version = Number(opera_version);
  var opera_lt10 = opera && (!opera_version || opera_version < 10);
  
  namespace = "core_";
  
  test("core_fromTextArea", function() {
    var te = document.getElementById("code");
    te.value = "CONTENT";
    var cm = CodeMirror.fromTextArea(te);
    is(!te.offsetHeight);
    eq(cm.getValue(), "CONTENT");
    cm.setValue("foo\nbar");
    eq(cm.getValue(), "foo\nbar");
    cm.save();
    is(/^foo\r?\nbar$/.test(te.value));
    cm.setValue("xxx");
    cm.toTextArea();
    is(te.offsetHeight);
    eq(te.value, "xxx");
  });
  
  testCM("getRange", function(cm) {
    eq(cm.getLine(0), "1234");
    eq(cm.getLine(1), "5678");
    eq(cm.getLine(2), null);
    eq(cm.getLine(-1), null);
    eq(cm.getRange(Pos(0, 0), Pos(0, 3)), "123");
    eq(cm.getRange(Pos(0, -1), Pos(0, 200)), "1234");
    eq(cm.getRange(Pos(0, 2), Pos(1, 2)), "34\n56");
    eq(cm.getRange(Pos(1, 2), Pos(100, 0)), "78");
  }, {value: "1234\n5678"});
  
  testCM("replaceRange", function(cm) {
    eq(cm.getValue(), "");
    cm.replaceRange("foo\n", Pos(0, 0));
    eq(cm.getValue(), "foo\n");
    cm.replaceRange("a\nb", Pos(0, 1));
    eq(cm.getValue(), "fa\nboo\n");
    eq(cm.lineCount(), 3);
    cm.replaceRange("xyzzy", Pos(0, 0), Pos(1, 1));
    eq(cm.getValue(), "xyzzyoo\n");
    cm.replaceRange("abc", Pos(0, 0), Pos(10, 0));
    eq(cm.getValue(), "abc");
    eq(cm.lineCount(), 1);
  });
  
  testCM("selection", function(cm) {
    cm.setSelection(Pos(0, 4), Pos(2, 2));
    is(cm.somethingSelected());
    eq(cm.getSelection(), "11\n222222\n33");
    eqCursorPos(cm.getCursor(false), Pos(2, 2));
    eqCursorPos(cm.getCursor(true), Pos(0, 4));
    cm.setSelection(Pos(1, 0));
    is(!cm.somethingSelected());
    eq(cm.getSelection(), "");
    eqCursorPos(cm.getCursor(true), Pos(1, 0));
    cm.replaceSelection("abc", "around");
    eq(cm.getSelection(), "abc");
    eq(cm.getValue(), "111111\nabc222222\n333333");
    cm.replaceSelection("def", "end");
    eq(cm.getSelection(), "");
    eqCursorPos(cm.getCursor(true), Pos(1, 3));
    cm.setCursor(Pos(2, 1));
    eqCursorPos(cm.getCursor(true), Pos(2, 1));
    cm.setCursor(1, 2);
    eqCursorPos(cm.getCursor(true), Pos(1, 2));
  }, {value: "111111\n222222\n333333"});
  
  testCM("extendSelection", function(cm) {
    cm.setExtending(true);
    addDoc(cm, 10, 10);
    cm.setSelection(Pos(3, 5));
    eqCursorPos(cm.getCursor("head"), Pos(3, 5));
    eqCursorPos(cm.getCursor("anchor"), Pos(3, 5));
    cm.setSelection(Pos(2, 5), Pos(5, 5));
    eqCursorPos(cm.getCursor("head"), Pos(5, 5));
    eqCursorPos(cm.getCursor("anchor"), Pos(2, 5));
    eqCursorPos(cm.getCursor("start"), Pos(2, 5));
    eqCursorPos(cm.getCursor("end"), Pos(5, 5));
    cm.setSelection(Pos(5, 5), Pos(2, 5));
    eqCursorPos(cm.getCursor("head"), Pos(2, 5));
    eqCursorPos(cm.getCursor("anchor"), Pos(5, 5));
    eqCursorPos(cm.getCursor("start"), Pos(2, 5));
    eqCursorPos(cm.getCursor("end"), Pos(5, 5));
    cm.extendSelection(Pos(3, 2));
    eqCursorPos(cm.getCursor("head"), Pos(3, 2));
    eqCursorPos(cm.getCursor("anchor"), Pos(5, 5));
    cm.extendSelection(Pos(6, 2));
    eqCursorPos(cm.getCursor("head"), Pos(6, 2));
    eqCursorPos(cm.getCursor("anchor"), Pos(5, 5));
    cm.extendSelection(Pos(6, 3), Pos(6, 4));
    eqCursorPos(cm.getCursor("head"), Pos(6, 4));
    eqCursorPos(cm.getCursor("anchor"), Pos(5, 5));
    cm.extendSelection(Pos(0, 3), Pos(0, 4));
    eqCursorPos(cm.getCursor("head"), Pos(0, 3));
    eqCursorPos(cm.getCursor("anchor"), Pos(5, 5));
    cm.extendSelection(Pos(4, 5), Pos(6, 5));
    eqCursorPos(cm.getCursor("head"), Pos(6, 5));
    eqCursorPos(cm.getCursor("anchor"), Pos(4, 5));
    cm.setExtending(false);
    cm.extendSelection(Pos(0, 3), Pos(0, 4));
    eqCursorPos(cm.getCursor("head"), Pos(0, 3));
    eqCursorPos(cm.getCursor("anchor"), Pos(0, 4));
  });
  
  testCM("lines", function(cm) {
    eq(cm.getLine(0), "111111");
    eq(cm.getLine(1), "222222");
    eq(cm.getLine(-1), null);
    cm.replaceRange("", Pos(1, 0), Pos(2, 0))
    cm.replaceRange("abc", Pos(1, 0), Pos(1));
    eq(cm.getValue(), "111111\nabc");
  }, {value: "111111\n222222\n333333"});
  
  testCM("indent", function(cm) {
    cm.indentLine(1);
    eq(cm.getLine(1), "   blah();");
    cm.setOption("indentUnit", 8);
    cm.indentLine(1);
    eq(cm.getLine(1), "\tblah();");
    cm.setOption("indentUnit", 10);
    cm.setOption("tabSize", 4);
    cm.indentLine(1);
    eq(cm.getLine(1), "\t\t  blah();");
  }, {value: "if (x) {\nblah();\n}", indentUnit: 3, indentWithTabs: true, tabSize: 8});
  
  testCM("indentByNumber", function(cm) {
    cm.indentLine(0, 2);
    eq(cm.getLine(0), "  foo");
    cm.indentLine(0, -200);
    eq(cm.getLine(0), "foo");
    cm.setSelection(Pos(0, 0), Pos(1, 2));
    cm.indentSelection(3);
    eq(cm.getValue(), "   foo\n   bar\nbaz");
  }, {value: "foo\nbar\nbaz"});
  
  test("core_defaults", function() {
    var defsCopy = {}, defs = CodeMirror.defaults;
    for (var opt in defs) defsCopy[opt] = defs[opt];
    defs.indentUnit = 5;
    defs.value = "uu";
    defs.indentWithTabs = true;
    defs.tabindex = 55;
    var place = document.getElementById("testground"), cm = CodeMirror(place);
    try {
      eq(cm.getOption("indentUnit"), 5);
      cm.setOption("indentUnit", 10);
      eq(defs.indentUnit, 5);
      eq(cm.getValue(), "uu");
      eq(cm.getOption("indentWithTabs"), true);
      eq(cm.getInputField().tabIndex, 55);
    }
    finally {
      for (var opt in defsCopy) defs[opt] = defsCopy[opt];
      place.removeChild(cm.getWrapperElement());
    }
  });
  
  testCM("lineInfo", function(cm) {
    eq(cm.lineInfo(-1), null);
    var mark = document.createElement("span");
    var lh = cm.setGutterMarker(1, "FOO", mark);
    var info = cm.lineInfo(1);
    eq(info.text, "222222");
    eq(info.gutterMarkers.FOO, mark);
    eq(info.line, 1);
    eq(cm.lineInfo(2).gutterMarkers, null);
    cm.setGutterMarker(lh, "FOO", null);
    eq(cm.lineInfo(1).gutterMarkers, null);
    cm.setGutterMarker(1, "FOO", mark);
    cm.setGutterMarker(0, "FOO", mark);
    cm.clearGutter("FOO");
    eq(cm.lineInfo(0).gutterMarkers, null);
    eq(cm.lineInfo(1).gutterMarkers, null);
  }, {value: "111111\n222222\n333333"});
  
  testCM("coords", function(cm) {
    cm.setSize(null, 100);
    addDoc(cm, 32, 200);
    var top = cm.charCoords(Pos(0, 0));
    var bot = cm.charCoords(Pos(200, 30));
    is(top.left < bot.left);
    is(top.top < bot.top);
    is(top.top < top.bottom);
    cm.scrollTo(null, 100);
    var top2 = cm.charCoords(Pos(0, 0));
    is(top.top > top2.top);
    eq(top.left, top2.left);
  });
  
  testCM("coordsChar", function(cm) {
    addDoc(cm, 35, 70);
    for (var i = 0; i < 2; ++i) {
      var sys = i ? "local" : "page";
      for (var ch = 0; ch <= 35; ch += 5) {
        for (var line = 0; line < 70; line += 5) {
          cm.setCursor(line, ch);
          var coords = cm.charCoords(Pos(line, ch), sys);
          var pos = cm.coordsChar({left: coords.left + 1, top: coords.top + 1}, sys);
          eqCharPos(pos, Pos(line, ch));
        }
      }
    }
  }, {lineNumbers: true});
  
  testCM("coordsCharBidi", function(cm) {
    addDoc(cm, 35, 70);
    // Put an rtl character into each line to trigger the bidi code path in coordsChar
    cm.setValue(cm.getValue().replace(/\bx/g, 'و'))
    for (var i = 0; i < 2; ++i) {
      var sys = i ? "local" : "page";
      for (var ch = 2; ch <= 35; ch += 5) {
        for (var line = 0; line < 70; line += 5) {
          cm.setCursor(line, ch);
          var coords = cm.charCoords(Pos(line, ch), sys);
          var pos = cm.coordsChar({left: coords.left + 1, top: coords.top + 1}, sys);
          eqCharPos(pos, Pos(line, ch));
        }
      }
    }
  }, {lineNumbers: true});
  
  testCM("badBidiOptimization", function(cm) {
    if (window.automatedTests) return
    var coords = cm.charCoords(Pos(0, 34))
    eqCharPos(cm.coordsChar({left: coords.right, top: coords.top + 2}), Pos(0, 34))
  }, {value: "----------<p class=\"title\">هل يمكنك اختيار مستوى قسط التأمين الذي ترغب بدفعه؟</p>"})
  
  testCM("posFromIndex", function(cm) {
    cm.setValue(
      "This function should\n" +
      "convert a zero based index\n" +
      "to line and ch."
    );
  
    var examples = [
      { index: -1, line: 0, ch: 0  }, // <- Tests clipping
      { index: 0,  line: 0, ch: 0  },
      { index: 10, line: 0, ch: 10 },
      { index: 39, line: 1, ch: 18 },
      { index: 55, line: 2, ch: 7  },
      { index: 63, line: 2, ch: 15 },
      { index: 64, line: 2, ch: 15 }  // <- Tests clipping
    ];
  
    for (var i = 0; i < examples.length; i++) {
      var example = examples[i];
      var pos = cm.posFromIndex(example.index);
      eq(pos.line, example.line);
      eq(pos.ch, example.ch);
      if (example.index >= 0 && example.index < 64)
        eq(cm.indexFromPos(pos), example.index);
    }
  });
  
  testCM("undo", function(cm) {
    cm.replaceRange("def", Pos(0, 0), Pos(0));
    eq(cm.historySize().undo, 1);
    cm.undo();
    eq(cm.getValue(), "abc");
    eq(cm.historySize().undo, 0);
    eq(cm.historySize().redo, 1);
    cm.redo();
    eq(cm.getValue(), "def");
    eq(cm.historySize().undo, 1);
    eq(cm.historySize().redo, 0);
    cm.setValue("1\n\n\n2");
    cm.clearHistory();
    eq(cm.historySize().undo, 0);
    for (var i = 0; i < 20; ++i) {
      cm.replaceRange("a", Pos(0, 0));
      cm.replaceRange("b", Pos(3, 0));
    }
    eq(cm.historySize().undo, 40);
    for (var i = 0; i < 40; ++i)
      cm.undo();
    eq(cm.historySize().redo, 40);
    eq(cm.getValue(), "1\n\n\n2");
  }, {value: "abc"});
  
  testCM("undoDepth", function(cm) {
    cm.replaceRange("d", Pos(0));
    cm.replaceRange("e", Pos(0));
    cm.replaceRange("f", Pos(0));
    cm.undo(); cm.undo(); cm.undo();
    eq(cm.getValue(), "abcd");
  }, {value: "abc", undoDepth: 4});
  
  testCM("undoDoesntClearValue", function(cm) {
    cm.undo();
    eq(cm.getValue(), "x");
  }, {value: "x"});
  
  testCM("undoMultiLine", function(cm) {
    cm.operation(function() {
      cm.replaceRange("x", Pos(0, 0));
      cm.replaceRange("y", Pos(1, 0));
    });
    cm.undo();
    eq(cm.getValue(), "abc\ndef\nghi");
    cm.operation(function() {
      cm.replaceRange("y", Pos(1, 0));
      cm.replaceRange("x", Pos(0, 0));
    });
    cm.undo();
    eq(cm.getValue(), "abc\ndef\nghi");
    cm.operation(function() {
      cm.replaceRange("y", Pos(2, 0));
      cm.replaceRange("x", Pos(1, 0));
      cm.replaceRange("z", Pos(2, 0));
    });
    cm.undo();
    eq(cm.getValue(), "abc\ndef\nghi", 3);
  }, {value: "abc\ndef\nghi"});
  
  testCM("undoComposite", function(cm) {
    cm.replaceRange("y", Pos(1));
    cm.operation(function() {
      cm.replaceRange("x", Pos(0));
      cm.replaceRange("z", Pos(2));
    });
    eq(cm.getValue(), "ax\nby\ncz\n");
    cm.undo();
    eq(cm.getValue(), "a\nby\nc\n");
    cm.undo();
    eq(cm.getValue(), "a\nb\nc\n");
    cm.redo(); cm.redo();
    eq(cm.getValue(), "ax\nby\ncz\n");
  }, {value: "a\nb\nc\n"});
  
  testCM("undoSelection", function(cm) {
    cm.setSelection(Pos(0, 2), Pos(0, 4));
    cm.replaceSelection("");
    cm.setCursor(Pos(1, 0));
    cm.undo();
    eqCursorPos(cm.getCursor(true), Pos(0, 2));
    eqCursorPos(cm.getCursor(false), Pos(0, 4));
    cm.setCursor(Pos(1, 0));
    cm.redo();
    eqCursorPos(cm.getCursor(true), Pos(0, 2));
    eqCursorPos(cm.getCursor(false), Pos(0, 2));
  }, {value: "abcdefgh\n"});
  
  testCM("undoSelectionAsBefore", function(cm) {
    cm.replaceSelection("abc", "around");
    cm.undo();
    cm.redo();
    eq(cm.getSelection(), "abc");
  });
  
  testCM("selectionChangeConfusesHistory", function(cm) {
    cm.replaceSelection("abc", null, "dontmerge");
    cm.operation(function() {
      cm.setCursor(Pos(0, 0));
      cm.replaceSelection("abc", null, "dontmerge");
    });
    eq(cm.historySize().undo, 2);
  });
  
  testCM("markTextSingleLine", function(cm) {
    forEach([{a: 0, b: 1, c: "", f: 2, t: 5},
             {a: 0, b: 4, c: "", f: 0, t: 2},
             {a: 1, b: 2, c: "x", f: 3, t: 6},
             {a: 4, b: 5, c: "", f: 3, t: 5},
             {a: 4, b: 5, c: "xx", f: 3, t: 7},
             {a: 2, b: 5, c: "", f: 2, t: 3},
             {a: 2, b: 5, c: "abcd", f: 6, t: 7},
             {a: 2, b: 6, c: "x", f: null, t: null},
             {a: 3, b: 6, c: "", f: null, t: null},
             {a: 0, b: 9, c: "hallo", f: null, t: null},
             {a: 4, b: 6, c: "x", f: 3, t: 4},
             {a: 4, b: 8, c: "", f: 3, t: 4},
             {a: 6, b: 6, c: "a", f: 3, t: 6},
             {a: 8, b: 9, c: "", f: 3, t: 6}], function(test) {
      cm.setValue("1234567890");
      var r = cm.markText(Pos(0, 3), Pos(0, 6), {className: "foo"});
      cm.replaceRange(test.c, Pos(0, test.a), Pos(0, test.b));
      var f = r.find();
      eq(f && f.from.ch, test.f); eq(f && f.to.ch, test.t);
    });
  });
  
  testCM("markTextMultiLine", function(cm) {
    function p(v) { return v && Pos(v[0], v[1]); }
    forEach([{a: [0, 0], b: [0, 5], c: "", f: [0, 0], t: [2, 5]},
             {a: [0, 0], b: [0, 5], c: "foo\n", f: [1, 0], t: [3, 5]},
             {a: [0, 1], b: [0, 10], c: "", f: [0, 1], t: [2, 5]},
             {a: [0, 5], b: [0, 6], c: "x", f: [0, 6], t: [2, 5]},
             {a: [0, 0], b: [1, 0], c: "", f: [0, 0], t: [1, 5]},
             {a: [0, 6], b: [2, 4], c: "", f: [0, 5], t: [0, 7]},
             {a: [0, 6], b: [2, 4], c: "aa", f: [0, 5], t: [0, 9]},
             {a: [1, 2], b: [1, 8], c: "", f: [0, 5], t: [2, 5]},
             {a: [0, 5], b: [2, 5], c: "xx", f: null, t: null},
             {a: [0, 0], b: [2, 10], c: "x", f: null, t: null},
             {a: [1, 5], b: [2, 5], c: "", f: [0, 5], t: [1, 5]},
             {a: [2, 0], b: [2, 3], c: "", f: [0, 5], t: [2, 2]},
             {a: [2, 5], b: [3, 0], c: "a\nb", f: [0, 5], t: [2, 5]},
             {a: [2, 3], b: [3, 0], c: "x", f: [0, 5], t: [2, 3]},
             {a: [1, 1], b: [1, 9], c: "1\n2\n3", f: [0, 5], t: [4, 5]}], function(test) {
      cm.setValue("aaaaaaaaaa\nbbbbbbbbbb\ncccccccccc\ndddddddd\n");
      var r = cm.markText(Pos(0, 5), Pos(2, 5),
                          {className: "CodeMirror-matchingbracket"});
      cm.replaceRange(test.c, p(test.a), p(test.b));
      var f = r.find();
      eqCursorPos(f && f.from, p(test.f)); eqCursorPos(f && f.to, p(test.t));
    });
  });
  
  testCM("markTextUndo", function(cm) {
    var marker1, marker2, bookmark;
    marker1 = cm.markText(Pos(0, 1), Pos(0, 3),
                          {className: "CodeMirror-matchingbracket"});
    marker2 = cm.markText(Pos(0, 0), Pos(2, 1),
                          {className: "CodeMirror-matchingbracket"});
    bookmark = cm.setBookmark(Pos(1, 5));
    cm.operation(function(){
      cm.replaceRange("foo", Pos(0, 2));
      cm.replaceRange("bar\nbaz\nbug\n", Pos(2, 0), Pos(3, 0));
    });
    var v1 = cm.getValue();
    cm.setValue("");
    eq(marker1.find(), null); eq(marker2.find(), null); eq(bookmark.find(), null);
    cm.undo();
    eqCursorPos(bookmark.find(), Pos(1, 5), "still there");
    cm.undo();
    var m1Pos = marker1.find(), m2Pos = marker2.find();
    eqCursorPos(m1Pos.from, Pos(0, 1)); eqCursorPos(m1Pos.to, Pos(0, 3));
    eqCursorPos(m2Pos.from, Pos(0, 0)); eqCursorPos(m2Pos.to, Pos(2, 1));
    eqCursorPos(bookmark.find(), Pos(1, 5));
    cm.redo(); cm.redo();
    eq(bookmark.find(), null);
    cm.undo();
    eqCursorPos(bookmark.find(), Pos(1, 5));
    eq(cm.getValue(), v1);
  }, {value: "1234\n56789\n00\n"});
  
  testCM("markTextStayGone", function(cm) {
    var m1 = cm.markText(Pos(0, 0), Pos(0, 1));
    cm.replaceRange("hi", Pos(0, 2));
    m1.clear();
    cm.undo();
    eq(m1.find(), null);
  }, {value: "hello"});
  
  testCM("markTextAllowEmpty", function(cm) {
    var m1 = cm.markText(Pos(0, 1), Pos(0, 2), {clearWhenEmpty: false});
    is(m1.find());
    cm.replaceRange("x", Pos(0, 0));
    is(m1.find());
    cm.replaceRange("y", Pos(0, 2));
    is(m1.find());
    cm.replaceRange("z", Pos(0, 3), Pos(0, 4));
    is(!m1.find());
    var m2 = cm.markText(Pos(0, 1), Pos(0, 2), {clearWhenEmpty: false,
                                                inclusiveLeft: true,
                                                inclusiveRight: true});
    cm.replaceRange("q", Pos(0, 1), Pos(0, 2));
    is(m2.find());
    cm.replaceRange("", Pos(0, 0), Pos(0, 3));
    is(!m2.find());
    var m3 = cm.markText(Pos(0, 1), Pos(0, 1), {clearWhenEmpty: false});
    cm.replaceRange("a", Pos(0, 3));
    is(m3.find());
    cm.replaceRange("b", Pos(0, 1));
    is(!m3.find());
  }, {value: "abcde"});
  
  testCM("markTextStacked", function(cm) {
    var m1 = cm.markText(Pos(0, 0), Pos(0, 0), {clearWhenEmpty: false});
    var m2 = cm.markText(Pos(0, 0), Pos(0, 0), {clearWhenEmpty: false});
    cm.replaceRange("B", Pos(0, 1));
    is(m1.find() && m2.find());
  }, {value: "A"});
  
  testCM("undoPreservesNewMarks", function(cm) {
    cm.markText(Pos(0, 3), Pos(0, 4));
    cm.markText(Pos(1, 1), Pos(1, 3));
    cm.replaceRange("", Pos(0, 3), Pos(3, 1));
    var mBefore = cm.markText(Pos(0, 0), Pos(0, 1));
    var mAfter = cm.markText(Pos(0, 5), Pos(0, 6));
    var mAround = cm.markText(Pos(0, 2), Pos(0, 4));
    cm.undo();
    eqCursorPos(mBefore.find().from, Pos(0, 0));
    eqCursorPos(mBefore.find().to, Pos(0, 1));
    eqCursorPos(mAfter.find().from, Pos(3, 3));
    eqCursorPos(mAfter.find().to, Pos(3, 4));
    eqCursorPos(mAround.find().from, Pos(0, 2));
    eqCursorPos(mAround.find().to, Pos(3, 2));
    var found = cm.findMarksAt(Pos(2, 2));
    eq(found.length, 1);
    eq(found[0], mAround);
  }, {value: "aaaa\nbbbb\ncccc\ndddd"});
  
  testCM("markClearBetween", function(cm) {
    cm.setValue("aaa\nbbb\nccc\nddd\n");
    cm.markText(Pos(0, 0), Pos(2));
    cm.replaceRange("aaa\nbbb\nccc", Pos(0, 0), Pos(2));
    eq(cm.findMarksAt(Pos(1, 1)).length, 0);
  });
  
  testCM("findMarksMiddle", function(cm) {
    var mark = cm.markText(Pos(1, 1), Pos(3, 1));
    var found = cm.findMarks(Pos(2, 1), Pos(2, 2));
    eq(found.length, 1);
    eq(found[0], mark);
  }, {value: "line 0\nline 1\nline 2\nline 3"});
  
  testCM("deleteSpanCollapsedInclusiveLeft", function(cm) {
    var from = Pos(1, 0), to = Pos(1, 1);
    var m = cm.markText(from, to, {collapsed: true, inclusiveLeft: true});
    // Delete collapsed span.
    cm.replaceRange("", from, to);
  }, {value: "abc\nX\ndef"});
  
  testCM("markTextCSS", function(cm) {
    function present() {
      var spans = cm.display.lineDiv.getElementsByTagName("span");
      for (var i = 0; i < spans.length; i++)
        if (spans[i].style.color && spans[i].textContent == "cdef") return true;
    }
    var m = cm.markText(Pos(0, 2), Pos(0, 6), {css: "color: cyan"});
    is(present());
    m.clear();
    is(!present());
  }, {value: "abcdefgh"});
  
  testCM("markTextWithAttributes", function(cm) {
    function present() {
      var spans = cm.display.lineDiv.getElementsByTagName("span");
      for (var i = 0; i < spans.length; i++)
        if (spans[i].getAttribute("label") == "label" && spans[i].textContent == "cdef") return true;
    }
    var m = cm.markText(Pos(0, 2), Pos(0, 6), {attributes: {label: "label"}});
    is(present());
    m.clear();
    is(!present());
  }, {value: "abcdefgh"});
  
  testCM("bookmark", function(cm) {
    function p(v) { return v && Pos(v[0], v[1]); }
    forEach([{a: [1, 0], b: [1, 1], c: "", d: [1, 4]},
             {a: [1, 1], b: [1, 1], c: "xx", d: [1, 7]},
             {a: [1, 4], b: [1, 5], c: "ab", d: [1, 6]},
             {a: [1, 4], b: [1, 6], c: "", d: null},
             {a: [1, 5], b: [1, 6], c: "abc", d: [1, 5]},
             {a: [1, 6], b: [1, 8], c: "", d: [1, 5]},
             {a: [1, 4], b: [1, 4], c: "\n\n", d: [3, 1]},
             {bm: [1, 9], a: [1, 1], b: [1, 1], c: "\n", d: [2, 8]}], function(test) {
      cm.setValue("1234567890\n1234567890\n1234567890");
      var b = cm.setBookmark(p(test.bm) || Pos(1, 5));
      cm.replaceRange(test.c, p(test.a), p(test.b));
      eqCursorPos(b.find(), p(test.d));
    });
  });
  
  testCM("bookmarkInsertLeft", function(cm) {
    var br = cm.setBookmark(Pos(0, 2), {insertLeft: false});
    var bl = cm.setBookmark(Pos(0, 2), {insertLeft: true});
    cm.setCursor(Pos(0, 2));
    cm.replaceSelection("hi");
    eqCursorPos(br.find(), Pos(0, 2));
    eqCursorPos(bl.find(), Pos(0, 4));
    cm.replaceRange("", Pos(0, 4), Pos(0, 5));
    cm.replaceRange("", Pos(0, 2), Pos(0, 4));
    cm.replaceRange("", Pos(0, 1), Pos(0, 2));
    // Verify that deleting next to bookmarks doesn't kill them
    eqCursorPos(br.find(), Pos(0, 1));
    eqCursorPos(bl.find(), Pos(0, 1));
  }, {value: "abcdef"});
  
  testCM("bookmarkCursor", function(cm) {
    var pos01 = cm.cursorCoords(Pos(0, 1)), pos11 = cm.cursorCoords(Pos(1, 1)),
        pos20 = cm.cursorCoords(Pos(2, 0)), pos30 = cm.cursorCoords(Pos(3, 0)),
        pos41 = cm.cursorCoords(Pos(4, 1));
    cm.setBookmark(Pos(0, 1), {widget: document.createTextNode("←"), insertLeft: true});
    cm.setBookmark(Pos(2, 0), {widget: document.createTextNode("←"), insertLeft: true});
    cm.setBookmark(Pos(1, 1), {widget: document.createTextNode("→")});
    cm.setBookmark(Pos(3, 0), {widget: document.createTextNode("→")});
    var new01 = cm.cursorCoords(Pos(0, 1)), new11 = cm.cursorCoords(Pos(1, 1)),
        new20 = cm.cursorCoords(Pos(2, 0)), new30 = cm.cursorCoords(Pos(3, 0));
    near(new01.left, pos01.left, 1);
    near(new01.top, pos01.top, 1);
    is(new11.left > pos11.left, "at right, middle of line");
    near(new11.top == pos11.top, 1);
    near(new20.left, pos20.left, 1);
    near(new20.top, pos20.top, 1);
    is(new30.left > pos30.left, "at right, empty line");
    near(new30.top, pos30, 1);
    cm.setBookmark(Pos(4, 0), {widget: document.createTextNode("→")});
    is(cm.cursorCoords(Pos(4, 1)).left > pos41.left, "single-char bug");
  }, {value: "foo\nbar\n\n\nx\ny"});
  
  testCM("multiBookmarkCursor", function(cm) {
    var ms = [], m;
    function add(insertLeft) {
      for (var i = 0; i < 3; ++i) {
        var node = document.createElement("span");
        node.innerHTML = "X";
        ms.push(cm.setBookmark(Pos(0, 1), {widget: node, insertLeft: insertLeft}));
      }
    }
    var base1 = cm.cursorCoords(Pos(0, 1)).left, base4 = cm.cursorCoords(Pos(0, 4)).left;
    add(true);
    near(base1, cm.cursorCoords(Pos(0, 1)).left, 1);
    while (m = ms.pop()) m.clear();
    add(false);
    near(base4, cm.cursorCoords(Pos(0, 1)).left, 1);
  }, {value: "abcdefg"});
  
  testCM("getAllMarks", function(cm) {
    addDoc(cm, 10, 10);
    var m1 = cm.setBookmark(Pos(0, 2));
    var m2 = cm.markText(Pos(0, 2), Pos(3, 2));
    var m3 = cm.markText(Pos(1, 2), Pos(1, 8));
    var m4 = cm.markText(Pos(8, 0), Pos(9, 0));
    eq(cm.getAllMarks().length, 4);
    m1.clear();
    m3.clear();
    eq(cm.getAllMarks().length, 2);
  });
  
  testCM("setValueClears", function(cm) {
    cm.addLineClass(0, "wrap", "foo");
    var mark = cm.markText(Pos(0, 0), Pos(1, 1), {inclusiveLeft: true, inclusiveRight: true});
    cm.setValue("foo");
    is(!cm.lineInfo(0).wrapClass);
    is(!mark.find());
  }, {value: "a\nb"});
  
  testCM("bug577", function(cm) {
    cm.setValue("a\nb");
    cm.clearHistory();
    cm.setValue("fooooo");
    cm.undo();
  });
  
  testCM("scrollSnap", function(cm) {
    cm.setSize(100, 100);
    addDoc(cm, 200, 200);
    cm.setCursor(Pos(100, 180));
    var info = cm.getScrollInfo();
    is(info.left > 0 && info.top > 0);
    cm.setCursor(Pos(0, 0));
    info = cm.getScrollInfo();
    is(info.left == 0 && info.top == 0, "scrolled clean to top");
    cm.setCursor(Pos(100, 180));
    cm.setCursor(Pos(199, 0));
    info = cm.getScrollInfo();
    is(info.left == 0 && info.top + 2 > info.height - cm.getScrollerElement().clientHeight, "scrolled clean to bottom");
  });
  
  testCM("scrollIntoView", function(cm) {
    function test(line, ch, msg) {
      var pos = Pos(line, ch);
      cm.scrollIntoView(pos);
      var outer = cm.getWrapperElement().getBoundingClientRect();
      var box = cm.charCoords(pos, "window");
      is(box.left >= outer.left, msg + " (left)");
      is(box.right <= outer.right, msg + " (right)");
      is(box.top >= outer.top, msg + " (top)");
      is(box.bottom <= outer.bottom, msg + " (bottom)");
    }
    addDoc(cm, 200, 200);
    test(199, 199, "bottom right");
    test(0, 0, "top left");
    test(100, 100, "center");
    test(199, 0, "bottom left");
    test(0, 199, "top right");
    test(100, 100, "center again");
  });
  
  testCM("scrollBackAndForth", function(cm) {
    addDoc(cm, 1, 200);
    cm.operation(function() {
      cm.scrollIntoView(Pos(199, 0));
      cm.scrollIntoView(Pos(4, 0));
    });
    is(cm.getScrollInfo().top > 0);
  });
  
  testCM("selectAllNoScroll", function(cm) {
    addDoc(cm, 1, 200);
    cm.execCommand("selectAll");
    eq(cm.getScrollInfo().top, 0);
    cm.setCursor(199);
    cm.execCommand("selectAll");
    is(cm.getScrollInfo().top > 0);
  });
  
  testCM("selectionPos", function(cm) {
    if (cm.getOption("inputStyle") != "textarea") return;
    cm.setSize(100, 100);
    addDoc(cm, 200, 100);
    cm.setSelection(Pos(1, 100), Pos(98, 100));
    var lineWidth = cm.charCoords(Pos(0, 200), "local").left;
    var lineHeight = (cm.charCoords(Pos(99)).top - cm.charCoords(Pos(0)).top) / 100;
    cm.scrollTo(0, 0);
    var selElt = byClassName(cm.getWrapperElement(), "CodeMirror-selected");
    var outer = cm.getWrapperElement().getBoundingClientRect();
    var sawMiddle, sawTop, sawBottom;
    for (var i = 0, e = selElt.length; i < e; ++i) {
      var box = selElt[i].getBoundingClientRect();
      var atLeft = box.left - outer.left < 30;
      var width = box.right - box.left;
      var atRight = box.right - outer.left > .8 * lineWidth;
      if (atLeft && atRight) {
        sawMiddle = true;
        is(box.bottom - box.top > 90 * lineHeight, "middle high");
        is(width > .9 * lineWidth, "middle wide");
      } else {
        is(width > .4 * lineWidth, "top/bot wide enough");
        is(width < .6 * lineWidth, "top/bot slim enough");
        if (atLeft) {
          sawBottom = true;
          is(box.top - outer.top > 96 * lineHeight, "bot below");
        } else if (atRight) {
          sawTop = true;
          is(box.top - outer.top < 2.1 * lineHeight, "top above");
        }
      }
    }
    is(sawTop && sawBottom && sawMiddle, "all parts");
  }, null);
  
  testCM("restoreHistory", function(cm) {
    cm.setValue("abc\ndef");
    cm.replaceRange("hello", Pos(1, 0), Pos(1));
    cm.replaceRange("goop", Pos(0, 0), Pos(0));
    cm.undo();
    var storedVal = cm.getValue(), storedHist = cm.getHistory();
    if (window.JSON) storedHist = JSON.parse(JSON.stringify(storedHist));
    eq(storedVal, "abc\nhello");
    cm.setValue("");
    cm.clearHistory();
    eq(cm.historySize().undo, 0);
    cm.setValue(storedVal);
    cm.setHistory(storedHist);
    cm.redo();
    eq(cm.getValue(), "goop\nhello");
    cm.undo(); cm.undo();
    eq(cm.getValue(), "abc\ndef");
  });
  
  testCM("doubleScrollbar", function(cm) {
    var dummy = document.body.appendChild(document.createElement("p"));
    dummy.style.cssText = "height: 50px; overflow: scroll; width: 50px";
    var scrollbarWidth = dummy.offsetWidth + 1 - dummy.clientWidth;
    document.body.removeChild(dummy);
    if (scrollbarWidth < 2) return;
    cm.setSize(null, 100);
    addDoc(cm, 1, 300);
    var wrap = cm.getWrapperElement();
    is(wrap.offsetWidth - byClassName(wrap, "CodeMirror-lines")[0].offsetWidth <= scrollbarWidth * 1.5);
  });
  
  testCM("weirdLinebreaks", function(cm) {
    cm.setValue("foo\nbar\rbaz\r\nquux\n\rplop");
    is(cm.getValue(), "foo\nbar\nbaz\nquux\n\nplop");
    is(cm.lineCount(), 6);
    cm.setValue("\n\n");
    is(cm.lineCount(), 3);
  });
  
  testCM("setSize", function(cm) {
    cm.setSize(100, 100);
    var wrap = cm.getWrapperElement();
    is(wrap.offsetWidth, 100);
    is(wrap.offsetHeight, 100);
    cm.setSize("100%", "3em");
    is(wrap.style.width, "100%");
    is(wrap.style.height, "3em");
    cm.setSize(null, 40);
    is(wrap.style.width, "100%");
    is(wrap.style.height, "40px");
  });
  
  function foldLines(cm, start, end, autoClear) {
    return cm.markText(Pos(start, 0), Pos(end - 1), {
      inclusiveLeft: true,
      inclusiveRight: true,
      collapsed: true,
      clearOnEnter: autoClear
    });
  }
  
  testCM("collapsedLines", function(cm) {
    addDoc(cm, 4, 10);
    var range = foldLines(cm, 4, 5), cleared = 0;
    CodeMirror.on(range, "clear", function() {cleared++;});
    cm.setCursor(Pos(3, 0));
    CodeMirror.commands.goLineDown(cm);
    eqCharPos(cm.getCursor(), Pos(5, 0));
    cm.replaceRange("abcdefg", Pos(3, 0), Pos(3));
    cm.setCursor(Pos(3, 6));
    CodeMirror.commands.goLineDown(cm);
    eqCharPos(cm.getCursor(), Pos(5, 4));
    cm.replaceRange("ab", Pos(3, 0), Pos(3));
    cm.setCursor(Pos(3, 2));
    CodeMirror.commands.goLineDown(cm);
    eqCharPos(cm.getCursor(), Pos(5, 2));
    cm.operation(function() {range.clear(); range.clear();});
    eq(cleared, 1);
  });
  
  testCM("collapsedRangeCoordsChar", function(cm) {
    var pos_1_3 = cm.charCoords(Pos(1, 3));
    pos_1_3.left += 2; pos_1_3.top += 2;
    var opts = {collapsed: true, inclusiveLeft: true, inclusiveRight: true};
    var m1 = cm.markText(Pos(0, 0), Pos(2, 0), opts);
    eqCharPos(cm.coordsChar(pos_1_3), Pos(3, 3));
    m1.clear();
    var m1 = cm.markText(Pos(0, 0), Pos(1, 1), {collapsed: true, inclusiveLeft: true});
    var m2 = cm.markText(Pos(1, 1), Pos(2, 0), {collapsed: true, inclusiveRight: true});
    eqCharPos(cm.coordsChar(pos_1_3), Pos(3, 3));
    m1.clear(); m2.clear();
    var m1 = cm.markText(Pos(0, 0), Pos(1, 6), opts);
    eqCharPos(cm.coordsChar(pos_1_3), Pos(3, 3));
  }, {value: "123456\nabcdef\nghijkl\nmnopqr\n"});
  
  testCM("collapsedRangeBetweenLinesSelected", function(cm) {
    if (cm.getOption("inputStyle") != "textarea") return;
    var widget = document.createElement("span");
    widget.textContent = "\u2194";
    cm.markText(Pos(0, 3), Pos(1, 0), {replacedWith: widget});
    cm.setSelection(Pos(0, 3), Pos(1, 0));
    var selElts = byClassName(cm.getWrapperElement(), "CodeMirror-selected");
    for (var i = 0, w = 0; i < selElts.length; i++)
      w += selElts[i].offsetWidth;
    is(w > 0);
  }, {value: "one\ntwo"});
  
  testCM("randomCollapsedRanges", function(cm) {
    addDoc(cm, 20, 500);
    cm.operation(function() {
      for (var i = 0; i < 200; i++) {
        var start = Pos(Math.floor(Math.random() * 500), Math.floor(Math.random() * 20));
        if (i % 4)
          try { cm.markText(start, Pos(start.line + 2, 1), {collapsed: true}); }
          catch(e) { if (!/overlapping/.test(String(e))) throw e; }
        else
          cm.markText(start, Pos(start.line, start.ch + 4), {"className": "foo"});
      }
    });
  });
  
  testCM("hiddenLinesAutoUnfold", function(cm) {
    var range = foldLines(cm, 1, 3, true), cleared = 0;
    CodeMirror.on(range, "clear", function() {cleared++;});
    cm.setCursor(Pos(3, 0));
    eq(cleared, 0);
    cm.execCommand("goCharLeft");
    eq(cleared, 1);
    range = foldLines(cm, 1, 3, true);
    CodeMirror.on(range, "clear", function() {cleared++;});
    eqCursorPos(cm.getCursor(), Pos(3, 0));
    cm.setCursor(Pos(0, 3));
    cm.execCommand("goCharRight");
    eq(cleared, 2);
  }, {value: "abc\ndef\nghi\njkl"});
  
  testCM("hiddenLinesSelectAll", function(cm) {  // Issue #484
    addDoc(cm, 4, 20);
    foldLines(cm, 0, 10);
    foldLines(cm, 11, 20);
    CodeMirror.commands.selectAll(cm);
    eqCursorPos(cm.getCursor(true), Pos(10, 0));
    eqCursorPos(cm.getCursor(false), Pos(10, 4));
  });
  
  testCM("clickFold", function(cm) { // Issue #5392
    cm.setValue("foo { bar }")
    var widget = document.createElement("span")
    widget.textContent = "<>"
    cm.markText(Pos(0, 5), Pos(0, 10), {replacedWith: widget})
    var after = cm.charCoords(Pos(0, 10))
    var foundOn = cm.coordsChar({left: after.left - 1, top: after.top + 4})
    is(foundOn.ch <= 5 || foundOn.ch >= 10, "Position is not inside the folded range")
  })
  
  testCM("everythingFolded", function(cm) {
    addDoc(cm, 2, 2);
    function enterPress() {
      cm.triggerOnKeyDown({type: "keydown", keyCode: 13, preventDefault: function(){}, stopPropagation: function(){}});
    }
    var fold = foldLines(cm, 0, 2);
    enterPress();
    eq(cm.getValue(), "xx\nxx");
    fold.clear();
    fold = foldLines(cm, 0, 2, true);
    eq(fold.find(), null);
    enterPress();
    eq(cm.getValue(), "\nxx\nxx");
  });
  
  testCM("structuredFold", function(cm) {
    addDoc(cm, 4, 8);
    var range = cm.markText(Pos(1, 2), Pos(6, 2), {
      replacedWith: document.createTextNode("Q")
    });
    cm.setCursor(0, 3);
    CodeMirror.commands.goLineDown(cm);
    eqCharPos(cm.getCursor(), Pos(6, 2));
    CodeMirror.commands.goCharLeft(cm);
    eqCharPos(cm.getCursor(), Pos(1, 2));
    CodeMirror.commands.delCharAfter(cm);
    eq(cm.getValue(), "xxxx\nxxxx\nxxxx");
    addDoc(cm, 4, 8);
    range = cm.markText(Pos(1, 2), Pos(6, 2), {
      replacedWith: document.createTextNode("M"),
      clearOnEnter: true
    });
    var cleared = 0;
    CodeMirror.on(range, "clear", function(){++cleared;});
    cm.setCursor(0, 3);
    CodeMirror.commands.goLineDown(cm);
    eqCharPos(cm.getCursor(), Pos(6, 2));
    CodeMirror.commands.goCharLeft(cm);
    eqCharPos(cm.getCursor(), Pos(6, 1));
    eq(cleared, 1);
    range.clear();
    eq(cleared, 1);
    range = cm.markText(Pos(1, 2), Pos(6, 2), {
      replacedWith: document.createTextNode("Q"),
      clearOnEnter: true
    });
    range.clear();
    cm.setCursor(1, 2);
    CodeMirror.commands.goCharRight(cm);
    eqCharPos(cm.getCursor(), Pos(1, 3));
    range = cm.markText(Pos(2, 0), Pos(4, 4), {
      replacedWith: document.createTextNode("M")
    });
    cm.setCursor(1, 0);
    CodeMirror.commands.goLineDown(cm);
    eqCharPos(cm.getCursor(), Pos(2, 0));
  }, null);
  
  testCM("nestedFold", function(cm) {
    addDoc(cm, 10, 3);
    function fold(ll, cl, lr, cr) {
      return cm.markText(Pos(ll, cl), Pos(lr, cr), {collapsed: true});
    }
    var inner1 = fold(0, 6, 1, 3), inner2 = fold(0, 2, 1, 8), outer = fold(0, 1, 2, 3), inner0 = fold(0, 5, 0, 6);
    cm.setCursor(0, 1);
    CodeMirror.commands.goCharRight(cm);
    eqCursorPos(cm.getCursor(), Pos(2, 3));
    inner0.clear();
    CodeMirror.commands.goCharLeft(cm);
    eqCursorPos(cm.getCursor(), Pos(0, 1));
    outer.clear();
    CodeMirror.commands.goCharRight(cm);
    eqCursorPos(cm.getCursor(), Pos(0, 2, "before"));
    CodeMirror.commands.goCharRight(cm);
    eqCursorPos(cm.getCursor(), Pos(1, 8));
    inner2.clear();
    CodeMirror.commands.goCharLeft(cm);
    eqCursorPos(cm.getCursor(), Pos(1, 7, "after"));
    cm.setCursor(0, 5);
    CodeMirror.commands.goCharRight(cm);
    eqCursorPos(cm.getCursor(), Pos(0, 6, "before"));
    CodeMirror.commands.goCharRight(cm);
    eqCursorPos(cm.getCursor(), Pos(1, 3));
  });
  
  testCM("badNestedFold", function(cm) {
    addDoc(cm, 4, 4);
    cm.markText(Pos(0, 2), Pos(3, 2), {collapsed: true});
    var caught;
    try {cm.markText(Pos(0, 1), Pos(0, 3), {collapsed: true});}
    catch(e) {caught = e;}
    is(caught instanceof Error, "no error");
    is(/overlap/i.test(caught.message), "wrong error");
  });
  
  testCM("nestedFoldOnSide", function(cm) {
    var m1 = cm.markText(Pos(0, 1), Pos(2, 1), {collapsed: true, inclusiveRight: true});
    var m2 = cm.markText(Pos(0, 1), Pos(0, 2), {collapsed: true});
    cm.markText(Pos(0, 1), Pos(0, 2), {collapsed: true}).clear();
    try { cm.markText(Pos(0, 1), Pos(0, 2), {collapsed: true, inclusiveLeft: true}); }
    catch(e) { var caught = e; }
    is(caught && /overlap/i.test(caught.message));
    var m3 = cm.markText(Pos(2, 0), Pos(2, 1), {collapsed: true});
    var m4 = cm.markText(Pos(2, 0), Pos(2, 1), {collapse: true, inclusiveRight: true});
    m1.clear(); m4.clear();
    m1 = cm.markText(Pos(0, 1), Pos(2, 1), {collapsed: true});
    cm.markText(Pos(2, 0), Pos(2, 1), {collapsed: true}).clear();
    try { cm.markText(Pos(2, 0), Pos(2, 1), {collapsed: true, inclusiveRight: true}); }
    catch(e) { var caught = e; }
    is(caught && /overlap/i.test(caught.message));
  }, {value: "ab\ncd\ef"});
  
  testCM("editInFold", function(cm) {
    addDoc(cm, 4, 6);
    var m = cm.markText(Pos(1, 2), Pos(3, 2), {collapsed: true});
    cm.replaceRange("", Pos(0, 0), Pos(1, 3));
    cm.replaceRange("", Pos(2, 1), Pos(3, 3));
    cm.replaceRange("a\nb\nc\nd", Pos(0, 1), Pos(1, 0));
    cm.cursorCoords(Pos(0, 0));
  });
  
  testCM("wrappingInlineWidget", function(cm) {
    cm.setSize("11em");
    var w = document.createElement("span");
    w.style.color = "red";
    w.innerHTML = "one two three four";
    cm.markText(Pos(0, 6), Pos(0, 9), {replacedWith: w});
    var cur0 = cm.cursorCoords(Pos(0, 0)), cur1 = cm.cursorCoords(Pos(0, 10));
    is(cur0.top < cur1.top);
    is(cur0.bottom < cur1.bottom);
    var curL = cm.cursorCoords(Pos(0, 6)), curR = cm.cursorCoords(Pos(0, 9));
    eq(curL.top, cur0.top);
    eq(curL.bottom, cur0.bottom);
    eq(curR.top, cur1.top);
    eq(curR.bottom, cur1.bottom);
    cm.replaceRange("", Pos(0, 9), Pos(0));
    curR = cm.cursorCoords(Pos(0, 9));
    eq(curR.top, cur1.top);
    eq(curR.bottom, cur1.bottom);
  }, {value: "1 2 3 xxx 4", lineWrapping: true});
  
  testCM("showEmptyWidgetSpan", function(cm) {
    var marker = cm.markText(Pos(0, 2), Pos(0, 2), {
      clearWhenEmpty: false,
      replacedWith: document.createTextNode("X")
    });
    var text = cm.display.view[0].text;
    eq(text.textContent || text.innerText, "abXc");
  }, {value: "abc"});
  
  testCM("changedInlineWidget", function(cm) {
    cm.setSize("10em");
    var w = document.createElement("span");
    w.innerHTML = "x";
    var m = cm.markText(Pos(0, 4), Pos(0, 5), {replacedWith: w});
    w.innerHTML = "and now the widget is really really long all of a sudden and a scrollbar is needed";
    m.changed();
    var hScroll = byClassName(cm.getWrapperElement(), "CodeMirror-hscrollbar")[0];
    is(hScroll.scrollWidth > hScroll.clientWidth);
  }, {value: "hello there"});
  
  testCM("changedBookmark", function(cm) {
    cm.setSize("10em");
    var w = document.createElement("span");
    w.innerHTML = "x";
    var m = cm.setBookmark(Pos(0, 4), {widget: w});
    w.innerHTML = "and now the widget is really really long all of a sudden and a scrollbar is needed";
    m.changed();
    var hScroll = byClassName(cm.getWrapperElement(), "CodeMirror-hscrollbar")[0];
    is(hScroll.scrollWidth > hScroll.clientWidth);
  }, {value: "abcdefg"});
  
  testCM("inlineWidget", function(cm) {
    var w = cm.setBookmark(Pos(0, 2), {widget: document.createTextNode("uu")});
    cm.setCursor(0, 2);
    CodeMirror.commands.goLineDown(cm);
    eqCharPos(cm.getCursor(), Pos(1, 4));
    cm.setCursor(0, 2);
    cm.replaceSelection("hi");
    eqCharPos(w.find(), Pos(0, 2));
    cm.setCursor(0, 1);
    cm.replaceSelection("ay");
    eqCharPos(w.find(), Pos(0, 4));
    eq(cm.getLine(0), "uayuhiuu");
  }, {value: "uuuu\nuuuuuu"});
  
  testCM("wrappingAndResizing", function(cm) {
    cm.setSize(null, "auto");
    cm.setOption("lineWrapping", true);
    var wrap = cm.getWrapperElement(), h0 = wrap.offsetHeight;
    var doc = "xxx xxx xxx xxx xxx";
    cm.setValue(doc);
    for (var step = 10, w = cm.charCoords(Pos(0, 18), "div").right;; w += step) {
      cm.setSize(w);
      if (wrap.offsetHeight <= h0 * (opera_lt10 ? 1.2 : 1.5)) {
        if (step == 10) { w -= 10; step = 1; }
        else break;
      }
    }
    // Ensure that putting the cursor at the end of the maximally long
    // line doesn't cause wrapping to happen.
    cm.setCursor(Pos(0, doc.length));
    eq(wrap.offsetHeight, h0);
    cm.replaceSelection("x");
    is(wrap.offsetHeight > h0, "wrapping happens");
    // Now add a max-height and, in a document consisting of
    // almost-wrapped lines, go over it so that a scrollbar appears.
    cm.setValue(doc + "\n" + doc + "\n");
    cm.getScrollerElement().style.maxHeight = "100px";
    cm.replaceRange("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n!\n", Pos(2, 0));
    forEach([Pos(0, doc.length), Pos(0, doc.length - 1),
             Pos(0, 0), Pos(1, doc.length), Pos(1, doc.length - 1)],
            function(pos) {
      var coords = cm.charCoords(pos);
      eqCharPos(pos, cm.coordsChar({left: coords.left + 2, top: coords.top + 5}));
    });
  }, null, ie_lt8);
  
  testCM("measureEndOfLine", function(cm) {
    cm.setSize(null, "auto");
    var inner = byClassName(cm.getWrapperElement(), "CodeMirror-lines")[0].firstChild;
    var lh = inner.offsetHeight;
    for (var step = 10, w = cm.charCoords(Pos(0, 7), "div").right;; w += step) {
      cm.setSize(w);
      if (inner.offsetHeight < 2.5 * lh) {
        if (step == 10) { w -= 10; step = 1; }
        else break;
      }
    }
    cm.setValue(cm.getValue() + "\n\n");
    var endPos = cm.charCoords(Pos(0, 18), "local");
    is(endPos.top > lh * .8, "not at top");
    is(endPos.left > w - 20, "at right");
    endPos = cm.charCoords(Pos(0, 18));
    eqCursorPos(cm.coordsChar({left: endPos.left, top: endPos.top + 5}), Pos(0, 18, "before"));
  
    var wrapPos = cm.cursorCoords(Pos(0, 9, "before"));
    is(wrapPos.top < endPos.top, "wrapPos is actually in first line");
    eqCursorPos(cm.coordsChar({left: wrapPos.left + 10, top: wrapPos.top}), Pos(0, 9, "before"));
  }, {mode: "text/html", value: "<!-- foo barrr -->", lineWrapping: true}, ie_lt8 || opera_lt10);
  
  testCM("measureWrappedEndOfLine", function(cm) {
    cm.setSize(null, "auto");
    var inner = byClassName(cm.getWrapperElement(), "CodeMirror-lines")[0].firstChild;
    var lh = inner.offsetHeight;
    for (var step = 10, w = cm.charCoords(Pos(0, 7), "div").right;; w += step) {
      cm.setSize(w);
      if (inner.offsetHeight < 2.5 * lh) {
        if (step == 10) { w -= 10; step = 1; }
        else break;
      }
    }
    for (var i = 0; i < 3; ++i) {
      var endPos = cm.charCoords(Pos(0, 12)); // Next-to-last since last would wrap (#1862)
      endPos.left += w; // Add width of editor just to be sure that we are behind last character
      eqCursorPos(cm.coordsChar(endPos), Pos(0, 13, "before"));
      endPos.left += w * 100;
      eqCursorPos(cm.coordsChar(endPos), Pos(0, 13, "before"));
      cm.setValue("0123456789abcابجابجابجابج");
      if (i == 1) {
        var node = document.createElement("div");
        node.innerHTML = "hi"; node.style.height = "30px";
        cm.addLineWidget(0, node, {above: true});
      }
    }
  }, {mode: "text/html", value: "0123456789abcde0123456789", lineWrapping: true}, ie_lt8 || opera_lt10);
  
  testCM("measureEndOfLineBidi", function(cm) {
    eqCursorPos(cm.coordsChar({left: 5000, top: cm.charCoords(Pos(0, 0)).top}), Pos(0, 8, "after"))
  }, {value: "إإإإuuuuإإإإ"})
  
  testCM("measureWrappedBidiLevel2", function(cm) {
    cm.setSize(cm.charCoords(Pos(0, 6), "editor").right + 60)
    var c9 = cm.charCoords(Pos(0, 9))
    eqCharPos(cm.coordsChar({left: c9.right - 1, top: c9.top + 1}), Pos(0, 9))
  }, {value: "foobar إإ إإ إإ إإ 555 بببببب", lineWrapping: true})
  
  testCM("measureWrappedBeginOfLine", function(cm) {
    cm.setSize(null, "auto");
    var inner = byClassName(cm.getWrapperElement(), "CodeMirror-lines")[0].firstChild;
    var lh = inner.offsetHeight;
    for (var step = 10, w = cm.charCoords(Pos(0, 7), "div").right;; w += step) {
      cm.setSize(w);
      if (inner.offsetHeight < 2.5 * lh) {
        if (step == 10) { w -= 10; step = 1; }
        else break;
      }
    }
    var beginOfSecondLine = Pos(0, 13, "after");
    for (var i = 0; i < 2; ++i) {
      var beginPos = cm.charCoords(Pos(0, 0));
      beginPos.left -= w;
      eqCursorPos(cm.coordsChar(beginPos), Pos(0, 0, "after"));
      beginPos = cm.cursorCoords(beginOfSecondLine);
      beginPos.left = 0;
      eqCursorPos(cm.coordsChar(beginPos), beginOfSecondLine);
      cm.setValue("0123456789abcابجابجابجابج");
      beginOfSecondLine = Pos(0, 25, "before");
    }
  }, {mode: "text/html", value: "0123456789abcde0123456789", lineWrapping: true});
  
  testCM("scrollVerticallyAndHorizontally", function(cm) {
    if (cm.getOption("inputStyle") != "textarea") return;
    cm.setSize(100, 100);
    addDoc(cm, 40, 40);
    cm.setCursor(39);
    var wrap = cm.getWrapperElement(), bar = byClassName(wrap, "CodeMirror-vscrollbar")[0];
    is(bar.offsetHeight < wrap.offsetHeight, "vertical scrollbar limited by horizontal one");
    var cursorBox = byClassName(wrap, "CodeMirror-cursor")[0].getBoundingClientRect();
    var editorBox = wrap.getBoundingClientRect();
    is(cursorBox.bottom < editorBox.top + cm.getScrollerElement().clientHeight,
       "bottom line visible");
  }, {lineNumbers: true});
  
  testCM("moveVstuck", function(cm) {
    var lines = byClassName(cm.getWrapperElement(), "CodeMirror-lines")[0].firstChild, h0 = lines.offsetHeight;
    var val = "fooooooooooooooooooooooooo baaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaar\n";
    cm.setValue(val);
    for (var w = cm.charCoords(Pos(0, 26), "div").right * 2.8;; w += 5) {
      cm.setSize(w);
      if (lines.offsetHeight <= 3.5 * h0) break;
    }
    cm.setCursor(Pos(0, val.length - 1));
    cm.moveV(-1, "line");
    eqCursorPos(cm.getCursor(), Pos(0, 27, "before"));
    is(cm.cursorCoords(null, "local").top < h0, "cursor is in first visual line");
  }, {lineWrapping: true}, ie_lt8 || opera_lt10);
  
  testCM("collapseOnMove", function(cm) {
    cm.setSelection(Pos(0, 1), Pos(2, 4));
    cm.execCommand("goLineUp");
    is(!cm.somethingSelected());
    eqCharPos(cm.getCursor(), Pos(0, 1));
    cm.setSelection(Pos(0, 1), Pos(2, 4));
    cm.execCommand("goPageDown");
    is(!cm.somethingSelected());
    eqCharPos(cm.getCursor(), Pos(2, 4));
    cm.execCommand("goLineUp");
    cm.execCommand("goLineUp");
    eqCharPos(cm.getCursor(), Pos(0, 4));
    cm.setSelection(Pos(0, 1), Pos(2, 4));
    cm.execCommand("goCharLeft");
    is(!cm.somethingSelected());
    eqCharPos(cm.getCursor(), Pos(0, 1));
  }, {value: "aaaaa\nb\nccccc"});
  
  testCM("clickTab", function(cm) {
    var p0 = cm.charCoords(Pos(0, 0));
    eqCharPos(cm.coordsChar({left: p0.left + 5, top: p0.top + 5}), Pos(0, 0));
    eqCharPos(cm.coordsChar({left: p0.right - 5, top: p0.top + 5}), Pos(0, 1));
  }, {value: "\t\n\n", lineWrapping: true, tabSize: 8});
  
  testCM("verticalScroll", function(cm) {
    cm.setSize(100, 200);
    cm.setValue("foo\nbar\nbaz\n");
    var sc = cm.getScrollerElement(), baseWidth = sc.scrollWidth;
    cm.replaceRange("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaah", Pos(0, 0), Pos(0));
    is(sc.scrollWidth > baseWidth, "scrollbar present");
    cm.replaceRange("foo", Pos(0, 0), Pos(0));
    eq(sc.scrollWidth, baseWidth, "scrollbar gone");
    cm.replaceRange("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaah", Pos(0, 0), Pos(0));
    cm.replaceRange("bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbh", Pos(1, 0), Pos(1));
    is(sc.scrollWidth > baseWidth, "present again");
    var curWidth = sc.scrollWidth;
    cm.replaceRange("foo", Pos(0, 0), Pos(0));
    is(sc.scrollWidth < curWidth, "scrollbar smaller");
    is(sc.scrollWidth > baseWidth, "but still present");
  });
  
  testCM("extraKeys", function(cm) {
    var outcome;
    function fakeKey(expected, code, props) {
      if (typeof code == "string") code = code.charCodeAt(0);
      var e = {type: "keydown", keyCode: code, preventDefault: function(){}, stopPropagation: function(){}};
      if (props) for (var n in props) e[n] = props[n];
      outcome = null;
      cm.triggerOnKeyDown(e);
      eq(outcome, expected);
    }
    CodeMirror.commands.testCommand = function() {outcome = "tc";};
    CodeMirror.commands.goTestCommand = function() {outcome = "gtc";};
    cm.setOption("extraKeys", {"Shift-X": function() {outcome = "sx";},
                               "X": function() {outcome = "x";},
                               "Ctrl-Alt-U": function() {outcome = "cau";},
                               "End": "testCommand",
                               "Home": "goTestCommand",
                               "Tab": false});
    fakeKey(null, "U");
    fakeKey("cau", "U", {ctrlKey: true, altKey: true});
    fakeKey(null, "U", {shiftKey: true, ctrlKey: true, altKey: true});
    fakeKey("x", "X");
    fakeKey("sx", "X", {shiftKey: true});
    fakeKey("tc", 35);
    fakeKey(null, 35, {shiftKey: true});
    fakeKey("gtc", 36);
    fakeKey("gtc", 36, {shiftKey: true});
    fakeKey(null, 9);
  }, null, window.opera && mac);
  
  testCM("wordMovementCommands", function(cm) {
    cm.execCommand("goWordLeft");
    eqCursorPos(cm.getCursor(), Pos(0, 0));
    cm.execCommand("goWordRight"); cm.execCommand("goWordRight");
    eqCursorPos(cm.getCursor(), Pos(0, 7, "before"));
    cm.execCommand("goWordLeft");
    eqCursorPos(cm.getCursor(), Pos(0, 5, "after"));
    cm.execCommand("goWordRight"); cm.execCommand("goWordRight");
    eqCursorPos(cm.getCursor(), Pos(0, 12, "before"));
    cm.execCommand("goWordLeft");
    eqCursorPos(cm.getCursor(), Pos(0, 9, "after"));
    cm.execCommand("goWordRight"); cm.execCommand("goWordRight"); cm.execCommand("goWordRight");
    eqCursorPos(cm.getCursor(), Pos(0, 24, "before"));
    cm.execCommand("goWordRight"); cm.execCommand("goWordRight");
    eqCursorPos(cm.getCursor(), Pos(1, 9, "before"));
    cm.execCommand("goWordRight");
    eqCursorPos(cm.getCursor(), Pos(1, 13, "before"));
    cm.execCommand("goWordRight"); cm.execCommand("goWordRight");
    eqCharPos(cm.getCursor(), Pos(2, 0));
  }, {value: "this is (the) firstline.\na foo12\u00e9\u00f8\u00d7bar\n"});
  
  testCM("groupMovementCommands", function(cm) {
    cm.execCommand("goGroupLeft");
    eqCursorPos(cm.getCursor(), Pos(0, 0));
    cm.execCommand("goGroupRight");
    eqCursorPos(cm.getCursor(), Pos(0, 4, "before"));
    cm.execCommand("goGroupRight");
    eqCursorPos(cm.getCursor(), Pos(0, 7, "before"));
    cm.execCommand("goGroupRight");
    eqCursorPos(cm.getCursor(), Pos(0, 10, "before"));
    cm.execCommand("goGroupLeft");
    eqCursorPos(cm.getCursor(), Pos(0, 7, "after"));
    cm.execCommand("goGroupRight"); cm.execCommand("goGroupRight"); cm.execCommand("goGroupRight");
    eqCursorPos(cm.getCursor(), Pos(0, 15, "before"));
    cm.setCursor(Pos(0, 17));
    cm.execCommand("goGroupLeft");
    eqCursorPos(cm.getCursor(), Pos(0, 16, "after"));
    cm.execCommand("goGroupLeft");
    eqCursorPos(cm.getCursor(), Pos(0, 14, "after"));
    cm.execCommand("goGroupRight"); cm.execCommand("goGroupRight");
    eqCursorPos(cm.getCursor(), Pos(0, 20, "before"));
    cm.execCommand("goGroupRight");
    eqCursorPos(cm.getCursor(), Pos(1, 0, "after"));
    cm.execCommand("goGroupRight");
    eqCursorPos(cm.getCursor(), Pos(1, 2, "before"));
    cm.execCommand("goGroupRight");
    eqCursorPos(cm.getCursor(), Pos(1, 5, "before"));
    cm.execCommand("goGroupLeft"); cm.execCommand("goGroupLeft");
    eqCursorPos(cm.getCursor(), Pos(1, 0, "after"));
    cm.execCommand("goGroupLeft");
    eqCursorPos(cm.getCursor(), Pos(0, 20, "after"));
    cm.execCommand("goGroupLeft");
    eqCursorPos(cm.getCursor(), Pos(0, 16, "after"));
  }, {value: "booo ba---quux. ffff\n  abc d"});
  
  testCM("groupsAndWhitespace", function(cm) {
    var positions = [Pos(0, 0), Pos(0, 2), Pos(0, 5), Pos(0, 9), Pos(0, 11),
                     Pos(1, 0), Pos(1, 2), Pos(1, 5)];
    for (var i = 1; i < positions.length; i++) {
      cm.execCommand("goGroupRight");
      eqCharPos(cm.getCursor(), positions[i]);
    }
    for (var i = positions.length - 2; i >= 0; i--) {
      cm.execCommand("goGroupLeft");
      eqCharPos(cm.getCursor(), i == 2 ? Pos(0, 6, "before") : positions[i]);
    }
  }, {value: "  foo +++  \n  bar"});
  
  testCM("charMovementCommands", function(cm) {
    cm.execCommand("goCharLeft"); cm.execCommand("goColumnLeft");
    eqCursorPos(cm.getCursor(), Pos(0, 0));
    cm.execCommand("goCharRight"); cm.execCommand("goCharRight");
    eqCursorPos(cm.getCursor(), Pos(0, 2, "before"));
    cm.setCursor(Pos(1, 0));
    cm.execCommand("goColumnLeft");
    eqCursorPos(cm.getCursor(), Pos(1, 0));
    cm.execCommand("goCharLeft");
    eqCursorPos(cm.getCursor(), Pos(0, 5, "before"));
    cm.execCommand("goColumnRight");
    eqCursorPos(cm.getCursor(), Pos(0, 5, "before"));
    cm.execCommand("goCharRight");
    eqCursorPos(cm.getCursor(), Pos(1, 0, "after"));
    cm.execCommand("goLineEnd");
    eqCursorPos(cm.getCursor(), Pos(1, 5, "before"));
    cm.execCommand("goLineStartSmart");
    eqCursorPos(cm.getCursor(), Pos(1, 1, "after"));
    cm.execCommand("goLineStartSmart");
    eqCursorPos(cm.getCursor(), Pos(1, 0, "after"));
    cm.setCursor(Pos(2, 0));
    cm.execCommand("goCharRight"); cm.execCommand("goColumnRight");
    eqCursorPos(cm.getCursor(), Pos(2, 0));
  }, {value: "line1\n ine2\n"});
  
  testCM("verticalMovementCommands", function(cm) {
    cm.execCommand("goLineUp");
    eqCharPos(cm.getCursor(), Pos(0, 0));
    cm.execCommand("goLineDown");
    eqCharPos(cm.getCursor(), Pos(1, 0));
    cm.setCursor(Pos(1, 12));
    cm.execCommand("goLineDown");
    eqCharPos(cm.getCursor(), Pos(2, 5));
    cm.execCommand("goLineDown");
    eqCharPos(cm.getCursor(), Pos(3, 0));
    cm.execCommand("goLineUp");
    eqCharPos(cm.getCursor(), Pos(2, 5));
    cm.execCommand("goLineUp");
    eqCharPos(cm.getCursor(), Pos(1, 12));
    cm.execCommand("goPageDown");
    eqCharPos(cm.getCursor(), Pos(5, 0));
    cm.execCommand("goPageDown"); cm.execCommand("goLineDown");
    eqCharPos(cm.getCursor(), Pos(5, 0));
    cm.execCommand("goPageUp");
    eqCharPos(cm.getCursor(), Pos(0, 0));
  }, {value: "line1\nlong long line2\nline3\n\nline5\n"});
  
  testCM("verticalMovementCommandsWrapping", function(cm) {
    cm.setSize(120);
    cm.setCursor(Pos(0, 5));
    cm.execCommand("goLineDown");
    eq(cm.getCursor().line, 0);
    is(cm.getCursor().ch > 5, "moved beyond wrap");
    for (var i = 0; ; ++i) {
      is(i < 20, "no endless loop");
      cm.execCommand("goLineDown");
      var cur = cm.getCursor();
      if (cur.line == 1) eq(cur.ch, 5);
      if (cur.line == 2) { eq(cur.ch, 1); break; }
    }
  }, {value: "a very long line that wraps around somehow so that we can test cursor movement\nshortone\nk",
      lineWrapping: true});
  
  testCM("verticalMovementCommandsSingleLine", function(cm) {
    cm.display.wrapper.style.height = "auto";
    cm.refresh();
    cm.execCommand("goLineUp");
    eqCursorPos(cm.getCursor(), Pos(0, 0));
    cm.execCommand("goLineDown");
    eqCursorPos(cm.getCursor(), Pos(0, 11));
    cm.setCursor(Pos(0, 5));
    cm.execCommand("goLineDown");
    eqCursorPos(cm.getCursor(), Pos(0, 11));
    cm.execCommand("goLineDown");
    eqCursorPos(cm.getCursor(), Pos(0, 11));
    cm.execCommand("goLineUp");
    eqCursorPos(cm.getCursor(), Pos(0, 0));
    cm.execCommand("goLineUp");
    eqCursorPos(cm.getCursor(), Pos(0, 0));
    cm.execCommand("goPageDown");
    eqCursorPos(cm.getCursor(), Pos(0, 11));
    cm.execCommand("goPageDown"); cm.execCommand("goLineDown");
    eqCursorPos(cm.getCursor(), Pos(0, 11));
    cm.execCommand("goPageUp");
    eqCursorPos(cm.getCursor(), Pos(0, 0));
    cm.setCursor(Pos(0, 5));
    cm.execCommand("goPageUp");
    eqCursorPos(cm.getCursor(), Pos(0, 0));
    cm.setCursor(Pos(0, 5));
    cm.execCommand("goPageDown");
    eqCursorPos(cm.getCursor(), Pos(0, 11));
  }, {value: "single line"});
  
  
  testCM("rtlMovement", function(cm) {
    if (cm.getOption("inputStyle") != "textarea") return;
    forEach(["خحج", "خحabcخحج", "abخحخحجcd", "abخde", "abخح2342خ1حج", "خ1ح2خح3حxج",
             "خحcd", "1خحcd", "abcdeح1ج", "خمرحبها مها!", "foobarر", "خ ة ق",
             "<img src=\"/בדיקה3.jpg\">", "يتم السحب في 05 فبراير 2014"], function(line) {
      cm.setValue(line + "\n"); cm.execCommand("goLineStart");
      var cursors = byClassName(cm.getWrapperElement(), "CodeMirror-cursors")[0];
      var cursor = cursors.firstChild;
      var prevX = cursor.offsetLeft, prevY = cursor.offsetTop;
      for (var i = 0; i <= line.length; ++i) {
        cm.execCommand("goCharRight");
        cursor = cursors.firstChild;
        if (i == line.length) is(cursor.offsetTop > prevY, "next line");
        else is(cursor.offsetLeft > prevX, "moved right");
        prevX = cursor.offsetLeft; prevY = cursor.offsetTop;
      }
      cm.setCursor(0, 0); cm.execCommand("goLineEnd");
      prevX = cursors.firstChild.offsetLeft;
      for (var i = 0; i < line.length; ++i) {
        cm.execCommand("goCharLeft");
        cursor = cursors.firstChild;
        is(cursor.offsetLeft < prevX, "moved left");
        prevX = cursor.offsetLeft;
      }
    });
  }, null, ie_lt9);
  
  // Verify that updating a line clears its bidi ordering
  testCM("bidiUpdate", function(cm) {
    cm.setCursor(Pos(0, 2, "before"));
    cm.replaceSelection("خحج", "start");
    cm.execCommand("goCharRight");
    eqCursorPos(cm.getCursor(), Pos(0, 6, "before"));
  }, {value: "abcd\n"});
  
  testCM("movebyTextUnit", function(cm) {
    cm.setValue("בְּרֵאשִ\nééé́\n");
    cm.execCommand("goLineStart");
    for (var i = 0; i < 4; ++i) cm.execCommand("goCharRight");
    eqCursorPos(cm.getCursor(), Pos(0, 0, "after"));
    cm.execCommand("goCharRight");
    eqCursorPos(cm.getCursor(), Pos(1, 0, "after"));
    cm.execCommand("goCharRight");
    cm.execCommand("goCharRight");
    eqCursorPos(cm.getCursor(), Pos(1, 4, "before"));
    cm.execCommand("goCharRight");
    eqCursorPos(cm.getCursor(), Pos(1, 7, "before"));
  });
  
  testCM("lineChangeEvents", function(cm) {
    addDoc(cm, 3, 5);
    var log = [], want = ["ch 0", "ch 1", "del 2", "ch 0", "ch 0", "del 1", "del 3", "del 4"];
    for (var i = 0; i < 5; ++i) {
      CodeMirror.on(cm.getLineHandle(i), "delete", function(i) {
        return function() {log.push("del " + i);};
      }(i));
      CodeMirror.on(cm.getLineHandle(i), "change", function(i) {
        return function() {log.push("ch " + i);};
      }(i));
    }
    cm.replaceRange("x", Pos(0, 1));
    cm.replaceRange("xy", Pos(1, 1), Pos(2));
    cm.replaceRange("foo\nbar", Pos(0, 1));
    cm.replaceRange("", Pos(0, 0), Pos(cm.lineCount()));
    eq(log.length, want.length, "same length");
    for (var i = 0; i < log.length; ++i)
      eq(log[i], want[i]);
  });
  
  testCM("scrollEntirelyToRight", function(cm) {
    if (cm.getOption("inputStyle") != "textarea") return;
    addDoc(cm, 500, 2);
    cm.setCursor(Pos(0, 500));
    var wrap = cm.getWrapperElement(), cur = byClassName(wrap, "CodeMirror-cursor")[0];
    is(wrap.getBoundingClientRect().right > cur.getBoundingClientRect().left);
  });
  
  testCM("lineWidgets", function(cm) {
    addDoc(cm, 500, 3);
    var last = cm.charCoords(Pos(2, 0));
    var node = document.createElement("div");
    node.innerHTML = "hi";
    var widget = cm.addLineWidget(1, node);
    is(last.top < cm.charCoords(Pos(2, 0)).top, "took up space");
    cm.setCursor(Pos(1, 1));
    cm.execCommand("goLineDown");
    eqCharPos(cm.getCursor(), Pos(2, 1));
    cm.execCommand("goLineUp");
    eqCharPos(cm.getCursor(), Pos(1, 1));
  });
  
  testCM("lineWidgetFocus", function(cm) {
    var place = document.getElementById("testground");
    place.className = "offscreen";
    try {
      addDoc(cm, 500, 10);
      var node = document.createElement("input");
      var widget = cm.addLineWidget(1, node);
      node.focus();
      eq(document.activeElement, node);
      cm.replaceRange("new stuff", Pos(1, 0));
      eq(document.activeElement, node);
    } finally {
      place.className = "";
    }
  });
  
  testCM("lineWidgetCautiousRedraw", function(cm) {
    var node = document.createElement("div");
    node.innerHTML = "hahah";
    var w = cm.addLineWidget(0, node);
    var redrawn = false;
    w.on("redraw", function() { redrawn = true; });
    cm.replaceSelection("0");
    is(!redrawn);
  }, {value: "123\n456"});
  
  
  var knownScrollbarWidth;
  function scrollbarWidth(measure) {
    if (knownScrollbarWidth != null) return knownScrollbarWidth;
    var div = document.createElement('div');
    div.style.cssText = "width: 50px; height: 50px; overflow-x: scroll";
    document.body.appendChild(div);
    knownScrollbarWidth = div.offsetHeight - div.clientHeight;
    document.body.removeChild(div);
    return knownScrollbarWidth || 0;
  }
  
  testCM("lineWidgetChanged", function(cm) {
    addDoc(cm, 2, 300);
    var halfScrollbarWidth = scrollbarWidth(cm.display.measure)/2;
    cm.setOption('lineNumbers', true);
    cm.setSize(600, cm.defaultTextHeight() * 50);
    cm.scrollTo(null, cm.heightAtLine(125, "local"));
  
    var expectedWidgetHeight = 60;
    var expectedLinesInWidget = 3;
    function w() {
      var node = document.createElement("div");
      // we use these children with just under half width of the line to check measurements are made with correct width
      // when placed in the measure div.
      // If the widget is measured at a width much narrower than it is displayed at, the underHalf children will span two lines and break the test.
      // If the widget is measured at a width much wider than it is displayed at, the overHalf children will combine and break the test.
      // Note that this test only checks widgets where coverGutter is true, because these require extra styling to get the width right.
      // It may also be worthwhile to check this for non-coverGutter widgets.
      // Visually:
      // Good:
      // | ------------- display width ------------- |
      // | ------- widget-width when measured ------ |
      // | | -- under-half -- | | -- under-half -- | |
      // | | --- over-half --- |                     |
      // | | --- over-half --- |                     |
      // Height: measured as 3 lines, same as it will be when actually displayed
  
      // Bad (too narrow):
      // | ------------- display width ------------- |
      // | ------ widget-width when measured ----- |  < -- uh oh
      // | | -- under-half -- |                    |
      // | | -- under-half -- |                    |  < -- when measured, shoved to next line
      // | | --- over-half --- |                   |
      // | | --- over-half --- |                   |
      // Height: measured as 4 lines, more than expected . Will be displayed as 3 lines!
  
      // Bad (too wide):
      // | ------------- display width ------------- |
      // | -------- widget-width when measured ------- | < -- uh oh
      // | | -- under-half -- | | -- under-half -- |   |
      // | | --- over-half --- | | --- over-half --- | | < -- when measured, combined on one line
      // Height: measured as 2 lines, less than expected. Will be displayed as 3 lines!
  
      var barelyUnderHalfWidthHtml = '<div style="display: inline-block; height: 1px; width: '+(285 - halfScrollbarWidth)+'px;"></div>';
      var barelyOverHalfWidthHtml = '<div style="display: inline-block; height: 1px; width: '+(305 - halfScrollbarWidth)+'px;"></div>';
      node.innerHTML = new Array(3).join(barelyUnderHalfWidthHtml) + new Array(3).join(barelyOverHalfWidthHtml);
      node.style.cssText = "background: yellow;font-size:0;line-height: " + (expectedWidgetHeight/expectedLinesInWidget) + "px;";
      return node;
    }
    var info0 = cm.getScrollInfo();
    var w0 = cm.addLineWidget(0, w(), { coverGutter: true });
    var w150 = cm.addLineWidget(150, w(), { coverGutter: true });
    var w300 = cm.addLineWidget(300, w(), { coverGutter: true });
    var info1 = cm.getScrollInfo();
    eq(info0.height + (3 * expectedWidgetHeight), info1.height);
    eq(info0.top + expectedWidgetHeight, info1.top);
    expectedWidgetHeight = 12;
    w0.node.style.lineHeight = w150.node.style.lineHeight = w300.node.style.lineHeight = (expectedWidgetHeight/expectedLinesInWidget) + "px";
    w0.changed(); w150.changed(); w300.changed();
    var info2 = cm.getScrollInfo();
    eq(info0.height + (3 * expectedWidgetHeight), info2.height);
    eq(info0.top + expectedWidgetHeight, info2.top);
  });
  
  testCM("lineWidgetIssue5486", function(cm) {
    // [prepare]
    // 2nd line is combined to 1st line due to markText
    // 2nd line has a lineWidget below
  
    cm.setValue("Lorem\nIpsue\nDollar")
  
    var el = document.createElement('div')
    el.style.height='50px'
    el.textContent = '[[LINE WIDGET]]'
    
    var lineWidget = cm.addLineWidget(1, el, {
      above: false,
      coverGutter: false,
      noHScroll: false,
      showIfHidden: false,
    })
    
    var marker = document.createElement('span')
    marker.textContent = '[--]'
    
    cm.markText({line:0, ch: 1}, {line:1, ch: 4}, {
      replacedWith: marker
    })
  
    // before resizing the lineWidget, measure 3rd line position
  
    var measure_1 = Math.round(cm.charCoords({line:2, ch:0}).top)
    
    // resize lineWidget, height + 50 px
  
    el.style.height='100px'
    el.textContent += "\nlineWidget size changed.\nTry moving cursor to line 3?"
    
    lineWidget.changed()
  
    // re-measure 3rd line position
    var measure_2 = Math.round(cm.charCoords({line:2, ch:0}).top)
    eq(measure_2, measure_1 + 50)
  
    // (extra test)
    //
    // add char to the right of the folded marker
    // and re-measure 3rd line position
  
    cm.replaceRange('-', {line:1, ch: 5})
    var measure_3 = Math.round(cm.charCoords({line:2, ch:0}).top)
    eq(measure_3, measure_2)
  });
  
  testCM("getLineNumber", function(cm) {
    addDoc(cm, 2, 20);
    var h1 = cm.getLineHandle(1);
    eq(cm.getLineNumber(h1), 1);
    cm.replaceRange("hi\nbye\n", Pos(0, 0));
    eq(cm.getLineNumber(h1), 3);
    cm.setValue("");
    eq(cm.getLineNumber(h1), null);
  });
  
  testCM("jumpTheGap", function(cm) {
    var longLine = "abcdef ghiklmnop qrstuvw xyz ";
    longLine += longLine; longLine += longLine; longLine += longLine;
    cm.replaceRange(longLine, Pos(2, 0), Pos(2));
    cm.setSize("200px", null);
    cm.getWrapperElement().style.lineHeight = 2;
    cm.refresh();
    cm.setCursor(Pos(0, 1));
    cm.execCommand("goLineDown");
    eqCharPos(cm.getCursor(), Pos(1, 1));
    cm.execCommand("goLineDown");
    eqCharPos(cm.getCursor(), Pos(2, 1));
    cm.execCommand("goLineDown");
    eq(cm.getCursor().line, 2);
    is(cm.getCursor().ch > 1);
    cm.execCommand("goLineUp");
    eqCharPos(cm.getCursor(), Pos(2, 1));
    cm.execCommand("goLineUp");
    eqCharPos(cm.getCursor(), Pos(1, 1));
    var node = document.createElement("div");
    node.innerHTML = "hi"; node.style.height = "30px";
    cm.addLineWidget(0, node);
    cm.addLineWidget(1, node.cloneNode(true), {above: true});
    cm.setCursor(Pos(0, 2));
    cm.execCommand("goLineDown");
    eqCharPos(cm.getCursor(), Pos(1, 2));
    cm.execCommand("goLineUp");
    eqCharPos(cm.getCursor(), Pos(0, 2));
  }, {lineWrapping: true, value: "abc\ndef\nghi\njkl\n"});
  
  testCM("addLineClass", function(cm) {
    function cls(line, text, bg, wrap, gutter) {
      var i = cm.lineInfo(line);
      eq(i.textClass, text);
      eq(i.bgClass, bg);
      eq(i.wrapClass, wrap);
      if (typeof i.handle.gutterClass !== 'undefined') {
          eq(i.handle.gutterClass, gutter);
      }
    }
    cm.addLineClass(0, "text", "foo");
    cm.addLineClass(0, "text", "bar");
    cm.addLineClass(1, "background", "baz");
    cm.addLineClass(1, "wrap", "foo");
    cm.addLineClass(1, "gutter", "gutter-class");
    cls(0, "foo bar", null, null, null);
    cls(1, null, "baz", "foo", "gutter-class");
    var lines = cm.display.lineDiv;
    eq(byClassName(lines, "foo").length, 2);
    eq(byClassName(lines, "bar").length, 1);
    eq(byClassName(lines, "baz").length, 1);
    eq(byClassName(lines, "gutter-class").length, 2); // Gutter classes are reflected in 2 nodes
    cm.removeLineClass(0, "text", "foo");
    cls(0, "bar", null, null, null);
    cm.removeLineClass(0, "text", "foo");
    cls(0, "bar", null, null, null);
    cm.removeLineClass(0, "text", "bar");
    cls(0, null, null, null);
  
    cm.addLineClass(1, "wrap", "quux");
    cls(1, null, "baz", "foo quux", "gutter-class");
    cm.removeLineClass(1, "wrap");
    cls(1, null, "baz", null, "gutter-class");
    cm.removeLineClass(1, "gutter", "gutter-class");
    eq(byClassName(lines, "gutter-class").length, 0);
    cls(1, null, "baz", null, null);
  
    cm.addLineClass(1, "gutter", "gutter-class");
    cls(1, null, "baz", null, "gutter-class");
    cm.removeLineClass(1, "gutter", "gutter-class");
    cls(1, null, "baz", null, null);
  
  }, {value: "hohoho\n", lineNumbers: true});
  
  testCM("atomicMarker", function(cm) {
    addDoc(cm, 10, 10);
  
    function atom(ll, cl, lr, cr, li, ri, ls, rs) {
      var options = {
        atomic: true,
        inclusiveLeft: li,
        inclusiveRight: ri
      };
  
      if (ls === true || ls === false) options["selectLeft"] = ls;
      if (rs === true || rs === false) options["selectRight"] = rs;
  
      return cm.markText(Pos(ll, cl), Pos(lr, cr), options);
    }
  
    // Can cursor to the left and right of a normal marker by jumping across it
    var m = atom(0, 1, 0, 5);
    cm.setCursor(Pos(0, 1));
    cm.execCommand("goCharRight");
    eqCursorPos(cm.getCursor(), Pos(0, 5));
    cm.execCommand("goCharLeft");
    eqCursorPos(cm.getCursor(), Pos(0, 1));
    m.clear();
  
    // Can't cursor to the left of a marker when inclusiveLeft=true
    m = atom(0, 0, 0, 5, true);
    eqCursorPos(cm.getCursor(), Pos(0, 5), "pushed out");
    cm.execCommand("goCharLeft");
    eqCursorPos(cm.getCursor(), Pos(0, 5));
    m.clear();
  
    // Can't cursor to the left of a marker when inclusiveLeft=false and selectLeft=false
    m = atom(0, 0, 0, 5, false, false, false);
    cm.setCursor(Pos(0, 5));
    eqCursorPos(cm.getCursor(), Pos(0, 5), "pushed out");
    cm.execCommand("goCharLeft");
    eqCursorPos(cm.getCursor(), Pos(0, 5));
    m.clear();
  
    // Can cursor to the left of a marker when inclusiveLeft=false and selectLeft=True
    m = atom(0, 0, 0, 5, false, false, true);
    cm.setCursor(Pos(0, 5));
    eqCursorPos(cm.getCursor(), Pos(0, 5), "pushed out");
    cm.execCommand("goCharLeft");
    eqCursorPos(cm.getCursor(), Pos(0, 0));
    m.clear();
  
    // Can't cursor to the right of a marker when inclusiveRight=true
    m = atom(0, 0, 0, 5, false, true);
    cm.setCursor(Pos(0, 0));
    eqCursorPos(cm.getCursor(), Pos(0, 0));
    cm.execCommand("goCharRight");
    eqCursorPos(cm.getCursor(), Pos(0, 6));
    m.clear();
  
    // Can't cursor to the right of a marker when inclusiveRight=false and selectRight=false
    m = atom(0, 0, 0, 5, false, false, true, false);
    cm.setCursor(Pos(0, 0));
    eqCursorPos(cm.getCursor(), Pos(0, 0));
    cm.execCommand("goCharRight");
    eqCursorPos(cm.getCursor(), Pos(0, 6));
    m.clear();
  
    // Can cursor to the right of a marker when inclusiveRight=false and selectRight=True
    m = atom(0, 0, 0, 5, false, false, true, true);
    cm.setCursor(Pos(0, 0));
    eqCursorPos(cm.getCursor(), Pos(0, 0));
    cm.execCommand("goCharRight");
    eqCursorPos(cm.getCursor(), Pos(0, 5));
    m.clear();
  
    // Can't cursor to the right of a multiline marker when inclusiveRight=true
    m = atom(8, 4, 9, 10, false, true);
    cm.setCursor(Pos(9, 8));
    eqCursorPos(cm.getCursor(), Pos(8, 4), "set");
    cm.execCommand("goCharRight");
    eqCursorPos(cm.getCursor(), Pos(8, 4), "char right");
    cm.execCommand("goLineDown");
    eqCursorPos(cm.getCursor(), Pos(8, 4), "line down");
    cm.execCommand("goCharLeft");
    eqCursorPos(cm.getCursor(), Pos(8, 3, "after"));
    m.clear();
  
    // Cursor jumps across a multiline atomic marker,
    // and backspace deletes the entire marker
    m = atom(1, 1, 3, 8);
    cm.setCursor(Pos(0, 0));
    cm.setCursor(Pos(2, 0));
    eqCursorPos(cm.getCursor(), Pos(3, 8));
    cm.execCommand("goCharLeft");
    eqCursorPos(cm.getCursor(), Pos(1, 1));
    cm.execCommand("goCharRight");
    eqCursorPos(cm.getCursor(), Pos(3, 8));
    cm.execCommand("goLineUp");
    eqCursorPos(cm.getCursor(), Pos(1, 1));
    cm.execCommand("goLineDown");
    eqCursorPos(cm.getCursor(), Pos(3, 8));
    cm.execCommand("delCharBefore");
    eq(cm.getValue().length, 80, "del chunk");
    m.clear();
    addDoc(cm, 10, 10);
  
    // Delete before an atomic marker deletes the entire marker
    m = atom(3, 0, 5, 5);
    cm.setCursor(Pos(3, 0));
    cm.execCommand("delWordAfter");
    eq(cm.getValue().length, 82, "del chunk");
    m.clear();
    addDoc(cm, 10, 10);
  });
  
  testCM("selectionBias", function(cm) {
    cm.markText(Pos(0, 1), Pos(0, 3), {atomic: true});
    cm.setCursor(Pos(0, 2));
    eqCursorPos(cm.getCursor(), Pos(0, 1));
    cm.setCursor(Pos(0, 2));
    eqCursorPos(cm.getCursor(), Pos(0, 3));
    cm.setCursor(Pos(0, 2));
    eqCursorPos(cm.getCursor(), Pos(0, 1));
    cm.setCursor(Pos(0, 2), null, {bias: -1});
    eqCursorPos(cm.getCursor(), Pos(0, 1));
    cm.setCursor(Pos(0, 4));
    cm.setCursor(Pos(0, 2), null, {bias: 1});
    eqCursorPos(cm.getCursor(), Pos(0, 3));
  }, {value: "12345"});
  
  testCM("selectionHomeEnd", function(cm) {
    cm.markText(Pos(1, 0), Pos(1, 1), {atomic: true, inclusiveLeft: true});
    cm.markText(Pos(1, 3), Pos(1, 4), {atomic: true, inclusiveRight: true});
    cm.setCursor(Pos(1, 2));
    cm.execCommand("goLineStart");
    eqCursorPos(cm.getCursor(), Pos(1, 1));
    cm.execCommand("goLineEnd");
    eqCursorPos(cm.getCursor(), Pos(1, 3));
  }, {value: "ab\ncdef\ngh"});
  
  testCM("readOnlyMarker", function(cm) {
    function mark(ll, cl, lr, cr, at) {
      return cm.markText(Pos(ll, cl), Pos(lr, cr),
                         {readOnly: true, atomic: at});
    }
    var m = mark(0, 1, 0, 4);
    cm.setCursor(Pos(0, 2));
    cm.replaceSelection("hi", "end");
    eqCursorPos(cm.getCursor(), Pos(0, 2));
    eq(cm.getLine(0), "abcde");
    cm.execCommand("selectAll");
    cm.replaceSelection("oops", "around");
    eq(cm.getValue(), "oopsbcd");
    cm.undo();
    eqCursorPos(m.find().from, Pos(0, 1));
    eqCursorPos(m.find().to, Pos(0, 4));
    m.clear();
    cm.setCursor(Pos(0, 2));
    cm.replaceSelection("hi", "around");
    eq(cm.getLine(0), "abhicde");
    eqCursorPos(cm.getCursor(), Pos(0, 4));
    m = mark(0, 2, 2, 2, true);
    cm.setSelection(Pos(1, 1), Pos(2, 4));
    cm.replaceSelection("t", "end");
    eqCursorPos(cm.getCursor(), Pos(2, 3));
    eq(cm.getLine(2), "klto");
    cm.execCommand("goCharLeft");
    cm.execCommand("goCharLeft");
    eqCursorPos(cm.getCursor(), Pos(0, 2));
    cm.setSelection(Pos(0, 1), Pos(0, 3));
    cm.replaceSelection("xx", "around");
    eqCursorPos(cm.getCursor(), Pos(0, 3));
    eq(cm.getLine(0), "axxhicde");
  }, {value: "abcde\nfghij\nklmno\n"});
  
  testCM("dirtyBit", function(cm) {
    eq(cm.isClean(), true);
    cm.replaceSelection("boo", null, "test");
    eq(cm.isClean(), false);
    cm.undo();
    eq(cm.isClean(), true);
    cm.replaceSelection("boo", null, "test");
    cm.replaceSelection("baz", null, "test");
    cm.undo();
    eq(cm.isClean(), false);
    cm.markClean();
    eq(cm.isClean(), true);
    cm.undo();
    eq(cm.isClean(), false);
    cm.redo();
    eq(cm.isClean(), true);
  });
  
  testCM("changeGeneration", function(cm) {
    cm.replaceSelection("x");
    var softGen = cm.changeGeneration();
    cm.replaceSelection("x");
    cm.undo();
    eq(cm.getValue(), "");
    is(!cm.isClean(softGen));
    cm.replaceSelection("x");
    var hardGen = cm.changeGeneration(true);
    cm.replaceSelection("x");
    cm.undo();
    eq(cm.getValue(), "x");
    is(cm.isClean(hardGen));
  });
  
  testCM("addKeyMap", function(cm) {
    function sendKey(code) {
      cm.triggerOnKeyDown({type: "keydown", keyCode: code,
                           preventDefault: function(){}, stopPropagation: function(){}});
    }
  
    sendKey(39);
    eqCursorPos(cm.getCursor(), Pos(0, 1, "before"));
    var test = 0;
    var map1 = {Right: function() { ++test; }}, map2 = {Right: function() { test += 10; }}
    cm.addKeyMap(map1);
    sendKey(39);
    eqCursorPos(cm.getCursor(), Pos(0, 1, "before"));
    eq(test, 1);
    cm.addKeyMap(map2, true);
    sendKey(39);
    eq(test, 2);
    cm.removeKeyMap(map1);
    sendKey(39);
    eq(test, 12);
    cm.removeKeyMap(map2);
    sendKey(39);
    eq(test, 12);
    eqCursorPos(cm.getCursor(), Pos(0, 2, "before"));
    cm.addKeyMap({Right: function() { test = 55; }, name: "mymap"});
    sendKey(39);
    eq(test, 55);
    cm.removeKeyMap("mymap");
    sendKey(39);
    eqCursorPos(cm.getCursor(), Pos(0, 3, "before"));
  }, {value: "abc"});
  
  function mouseDown(cm, button, pos, mods) {
    var coords = cm.charCoords(pos, "window")
    var event = {type: "mousedown",
                 preventDefault: Math.min,
                 which: button,
                 target: cm.display.lineDiv,
                 clientX: coords.left, clientY: coords.top}
    if (mods) for (var prop in mods) event[prop] = mods[prop]
    cm.triggerOnMouseDown(event)
  }
  
  testCM("mouseBinding", function(cm) {
    var fired = []
    cm.addKeyMap({
      "Shift-LeftClick": function(_cm, pos) {
        eqCharPos(pos, Pos(1, 2))
        fired.push("a")
      },
      "Shift-LeftDoubleClick": function() { fired.push("b") },
      "Shift-LeftTripleClick": function() { fired.push("c") }
    })
  
    function send(button, mods) { mouseDown(cm, button, Pos(1, 2), mods) }
    send(1, {shiftKey: true})
    send(1, {shiftKey: true})
    send(1, {shiftKey: true})
    send(1, {})
    send(2, {ctrlKey: true})
    send(2, {ctrlKey: true})
    eq(fired.join(" "), "a b c")
  }, {value: "foo\nbar\nbaz"})
  
  testCM("configureMouse", function(cm) {
    cm.setOption("configureMouse", function() { return {unit: "word"} })
    mouseDown(cm, 1, Pos(0, 5))
    eqCharPos(cm.getCursor("from"), Pos(0, 4))
    eqCharPos(cm.getCursor("to"), Pos(0, 7))
    cm.setOption("configureMouse", function() { return {extend: true} })
    mouseDown(cm, 1, Pos(0, 0))
    eqCharPos(cm.getCursor("from"), Pos(0, 0))
    eqCharPos(cm.getCursor("to"), Pos(0, 4))
  }, {value: "foo bar baz"})
  
  testCM("findPosH", function(cm) {
    forEach([{from: Pos(0, 0), to: Pos(0, 1, "before"), by: 1},
             {from: Pos(0, 0), to: Pos(0, 0), by: -1, hitSide: true},
             {from: Pos(0, 0), to: Pos(0, 4, "before"), by: 1, unit: "word"},
             {from: Pos(0, 0), to: Pos(0, 8, "before"), by: 2, unit: "word"},
             {from: Pos(0, 0), to: Pos(2, 0, "after"), by: 20, unit: "word", hitSide: true},
             {from: Pos(0, 7), to: Pos(0, 5, "after"), by: -1, unit: "word"},
             {from: Pos(0, 4), to: Pos(0, 8, "before"), by: 1, unit: "word"},
             {from: Pos(1, 0), to: Pos(1, 18, "before"), by: 3, unit: "word"},
             {from: Pos(1, 22), to: Pos(1, 5, "after"), by: -3, unit: "word"},
             {from: Pos(1, 15), to: Pos(1, 10, "after"), by: -5},
             {from: Pos(1, 15), to: Pos(1, 10, "after"), by: -5, unit: "column"},
             {from: Pos(1, 15), to: Pos(1, 0, "after"), by: -50, unit: "column", hitSide: true},
             {from: Pos(1, 15), to: Pos(1, 24, "before"), by: 50, unit: "column", hitSide: true},
             {from: Pos(1, 15), to: Pos(2, 0, "after"), by: 50, hitSide: true}], function(t) {
      var r = cm.findPosH(t.from, t.by, t.unit || "char");
      eqCursorPos(r, t.to);
      eq(!!r.hitSide, !!t.hitSide);
    });
  }, {value: "line one\nline two.something.other\n"});
  
  testCM("beforeChange", function(cm) {
    cm.on("beforeChange", function(cm, change) {
      var text = [];
      for (var i = 0; i < change.text.length; ++i)
        text.push(change.text[i].replace(/\s/g, "_"));
      change.update(null, null, text);
    });
    cm.setValue("hello, i am a\nnew document\n");
    eq(cm.getValue(), "hello,_i_am_a\nnew_document\n");
    CodeMirror.on(cm.getDoc(), "beforeChange", function(doc, change) {
      if (change.from.line == 0) change.cancel();
    });
    cm.setValue("oops"); // Canceled
    eq(cm.getValue(), "hello,_i_am_a\nnew_document\n");
    cm.replaceRange("hey hey hey", Pos(1, 0), Pos(2, 0));
    eq(cm.getValue(), "hello,_i_am_a\nhey_hey_hey");
  }, {value: "abcdefghijk"});
  
  testCM("beforeChangeUndo", function(cm) {
    cm.replaceRange("hi", Pos(0, 0), Pos(0));
    cm.replaceRange("bye", Pos(0, 0), Pos(0));
    eq(cm.historySize().undo, 2);
    cm.on("beforeChange", function(cm, change) {
      is(!change.update);
      change.cancel();
    });
    cm.undo();
    eq(cm.historySize().undo, 0);
    eq(cm.getValue(), "bye\ntwo");
  }, {value: "one\ntwo"});
  
  testCM("beforeSelectionChange", function(cm) {
    function notAtEnd(cm, pos) {
      var len = cm.getLine(pos.line).length;
      if (!len || pos.ch == len) return Pos(pos.line, pos.ch - 1);
      return pos;
    }
    cm.on("beforeSelectionChange", function(cm, obj) {
      obj.update([{anchor: notAtEnd(cm, obj.ranges[0].anchor),
                   head: notAtEnd(cm, obj.ranges[0].head)}]);
    });
  
    addDoc(cm, 10, 10);
    cm.execCommand("goLineEnd");
    eqCursorPos(cm.getCursor(), Pos(0, 9));
    cm.execCommand("selectAll");
    eqCursorPos(cm.getCursor("start"), Pos(0, 0));
    eqCursorPos(cm.getCursor("end"), Pos(9, 9));
  });
  
  testCM("change_removedText", function(cm) {
    cm.setValue("abc\ndef");
  
    var removedText = [];
    cm.on("change", function(cm, change) {
      removedText.push(change.removed);
    });
  
    cm.operation(function() {
      cm.replaceRange("xyz", Pos(0, 0), Pos(1,1));
      cm.replaceRange("123", Pos(0,0));
    });
  
    eq(removedText.length, 2);
    eq(removedText[0].join("\n"), "abc\nd");
    eq(removedText[1].join("\n"), "");
  
    var removedText = [];
    cm.undo();
    eq(removedText.length, 2);
    eq(removedText[0].join("\n"), "123");
    eq(removedText[1].join("\n"), "xyz");
  
    var removedText = [];
    cm.redo();
    eq(removedText.length, 2);
    eq(removedText[0].join("\n"), "abc\nd");
    eq(removedText[1].join("\n"), "");
  });
  
  testCM("lineStyleFromMode", function(cm) {
    CodeMirror.defineMode("test_mode", function() {
      return {token: function(stream) {
        if (stream.match(/^\[[^\]]*\]/)) return "  line-brackets  ";
        if (stream.match(/^\([^\)]*\)/)) return "  line-background-parens  ";
        if (stream.match(/^<[^>]*>/)) return "  span  line-line  line-background-bg  ";
        stream.match(/^\s+|^\S+/);
      }};
    });
    cm.setOption("mode", "test_mode");
    var bracketElts = byClassName(cm.getWrapperElement(), "brackets");
    eq(bracketElts.length, 1, "brackets count");
    eq(bracketElts[0].nodeName, "PRE");
    is(!/brackets.*brackets/.test(bracketElts[0].className));
    var parenElts = byClassName(cm.getWrapperElement(), "parens");
    eq(parenElts.length, 1, "parens count");
    eq(parenElts[0].nodeName, "DIV");
    is(!/parens.*parens/.test(parenElts[0].className));
    eq(parenElts[0].parentElement.nodeName, "DIV");
  
    is(byClassName(cm.getWrapperElement(), "bg").length > 0);
    is(byClassName(cm.getWrapperElement(), "line").length > 0);
    var spanElts = byClassName(cm.getWrapperElement(), "cm-span");
    eq(spanElts.length, 2);
    is(/^\s*cm-span\s*$/.test(spanElts[0].className));
  }, {value: "line1: [br] [br]\nline2: (par) (par)\nline3: <tag> <tag>"});
  
  testCM("lineStyleFromBlankLine", function(cm) {
    CodeMirror.defineMode("lineStyleFromBlankLine_mode", function() {
      return {token: function(stream) { stream.skipToEnd(); return "comment"; },
              blankLine: function() { return "line-blank"; }};
    });
    cm.setOption("mode", "lineStyleFromBlankLine_mode");
    var blankElts = byClassName(cm.getWrapperElement(), "blank");
    eq(blankElts.length, 1);
    eq(blankElts[0].nodeName, "PRE");
    cm.replaceRange("x", Pos(1, 0));
    blankElts = byClassName(cm.getWrapperElement(), "blank");
    eq(blankElts.length, 0);
  }, {value: "foo\n\nbar"});
  
  CodeMirror.registerHelper("xxx", "a", "A");
  CodeMirror.registerHelper("xxx", "b", "B");
  CodeMirror.defineMode("yyy", function() {
    return {
      token: function(stream) { stream.skipToEnd(); },
      xxx: ["a", "b", "q"]
    };
  });
  CodeMirror.registerGlobalHelper("xxx", "c", function(m) { return m.enableC; }, "C");
  
  testCM("helpers", function(cm) {
    cm.setOption("mode", "yyy");
    eq(cm.getHelpers(Pos(0, 0), "xxx").join("/"), "A/B");
    cm.setOption("mode", {name: "yyy", modeProps: {xxx: "b", enableC: true}});
    eq(cm.getHelpers(Pos(0, 0), "xxx").join("/"), "B/C");
    cm.setOption("mode", "javascript");
    eq(cm.getHelpers(Pos(0, 0), "xxx").join("/"), "");
  });
  
  testCM("selectionHistory", function(cm) {
    for (var i = 0; i < 3; i++) {
      cm.setExtending(true);
      cm.execCommand("goCharRight");
      cm.setExtending(false);
      cm.execCommand("goCharRight");
      cm.execCommand("goCharRight");
    }
    cm.execCommand("undoSelection");
    eq(cm.getSelection(), "c");
    cm.execCommand("undoSelection");
    eq(cm.getSelection(), "");
    eqCursorPos(cm.getCursor(), Pos(0, 4, "before"));
    cm.execCommand("undoSelection");
    eq(cm.getSelection(), "b");
    cm.execCommand("redoSelection");
    eq(cm.getSelection(), "");
    eqCursorPos(cm.getCursor(), Pos(0, 4, "before"));
    cm.execCommand("redoSelection");
    eq(cm.getSelection(), "c");
    cm.execCommand("redoSelection");
    eq(cm.getSelection(), "");
    eqCursorPos(cm.getCursor(), Pos(0, 6, "before"));
  }, {value: "a b c d"});
  
  testCM("selectionChangeReducesRedo", function(cm) {
    cm.replaceSelection("X");
    cm.execCommand("goCharRight");
    cm.undoSelection();
    cm.execCommand("selectAll");
    cm.undoSelection();
    eq(cm.getValue(), "Xabc");
    eqCursorPos(cm.getCursor(), Pos(0, 1));
    cm.undoSelection();
    eq(cm.getValue(), "abc");
  }, {value: "abc"});
  
  testCM("selectionHistoryNonOverlapping", function(cm) {
    cm.setSelection(Pos(0, 0), Pos(0, 1));
    cm.setSelection(Pos(0, 2), Pos(0, 3));
    cm.execCommand("undoSelection");
    eqCursorPos(cm.getCursor("anchor"), Pos(0, 0));
    eqCursorPos(cm.getCursor("head"), Pos(0, 1));
  }, {value: "1234"});
  
  testCM("cursorMotionSplitsHistory", function(cm) {
    cm.replaceSelection("a");
    cm.execCommand("goCharRight");
    cm.replaceSelection("b");
    cm.replaceSelection("c");
    cm.undo();
    eq(cm.getValue(), "a1234");
    eqCursorPos(cm.getCursor(), Pos(0, 2, "before"));
    cm.undo();
    eq(cm.getValue(), "1234");
    eqCursorPos(cm.getCursor(), Pos(0, 0));
  }, {value: "1234"});
  
  testCM("selChangeInOperationDoesNotSplit", function(cm) {
    for (var i = 0; i < 4; i++) {
      cm.operation(function() {
        cm.replaceSelection("x");
        cm.setCursor(Pos(0, cm.getCursor().ch - 1));
      });
    }
    eqCursorPos(cm.getCursor(), Pos(0, 0));
    eq(cm.getValue(), "xxxxa");
    cm.undo();
    eq(cm.getValue(), "a");
  }, {value: "a"});
  
  testCM("alwaysMergeSelEventWithChangeOrigin", function(cm) {
    cm.replaceSelection("U", null, "foo");
    cm.setSelection(Pos(0, 0), Pos(0, 1), {origin: "foo"});
    cm.undoSelection();
    eq(cm.getValue(), "a");
    cm.replaceSelection("V", null, "foo");
    cm.setSelection(Pos(0, 0), Pos(0, 1), {origin: "bar"});
    cm.undoSelection();
    eq(cm.getValue(), "Va");
  }, {value: "a"});
  
  testCM("getTokenAt", function(cm) {
    var tokPlus = cm.getTokenAt(Pos(0, 2));
    eq(tokPlus.type, "operator");
    eq(tokPlus.string, "+");
    var toks = cm.getLineTokens(0);
    eq(toks.length, 3);
    forEach([["number", "1"], ["operator", "+"], ["number", "2"]], function(expect, i) {
      eq(toks[i].type, expect[0]);
      eq(toks[i].string, expect[1]);
    });
  }, {value: "1+2", mode: "javascript"});
  
  testCM("getTokenTypeAt", function(cm) {
    eq(cm.getTokenTypeAt(Pos(0, 0)), "number");
    eq(cm.getTokenTypeAt(Pos(0, 6)), "string");
    cm.addOverlay({
      token: function(stream) {
        if (stream.match("foo")) return "foo";
        else stream.next();
      }
    });
    eq(byClassName(cm.getWrapperElement(), "cm-foo").length, 1);
    eq(cm.getTokenTypeAt(Pos(0, 6)), "string");
  }, {value: "1 + 'foo'", mode: "javascript"});
  
  testCM("addOverlay", function(cm) {
    cm.addOverlay({
      token: function(stream) {
        var base = stream.baseToken()
        if (!/comment/.test(base.type) && stream.match(/\d+/)) return "x"
        stream.next()
      }
    })
    var x = byClassName(cm.getWrapperElement(), "cm-x")
    is(x.length, 1)
    is(x[0].textContent, "233")
    cm.replaceRange("", Pos(0, 4), Pos(0, 6))
    is(byClassName(cm.getWrapperElement(), "cm-x").length, 2)
  }, {value: "foo /* 100 */\nbar + 233;\nbaz", mode: "javascript"})
  
  testCM("resizeLineWidget", function(cm) {
    addDoc(cm, 200, 3);
    var widget = document.createElement("pre");
    widget.innerHTML = "imwidget";
    widget.style.background = "yellow";
    cm.addLineWidget(1, widget, {noHScroll: true});
    cm.setSize(40);
    is(widget.parentNode.offsetWidth < 42);
  });
  
  testCM("combinedOperations", function(cm) {
    var place = document.getElementById("testground");
    var other = CodeMirror(place, {value: "123"});
    try {
      cm.operation(function() {
        cm.addLineClass(0, "wrap", "foo");
        other.addLineClass(0, "wrap", "foo");
      });
      eq(byClassName(cm.getWrapperElement(), "foo").length, 1);
      eq(byClassName(other.getWrapperElement(), "foo").length, 1);
      cm.operation(function() {
        cm.removeLineClass(0, "wrap", "foo");
        other.removeLineClass(0, "wrap", "foo");
      });
      eq(byClassName(cm.getWrapperElement(), "foo").length, 0);
      eq(byClassName(other.getWrapperElement(), "foo").length, 0);
    } finally {
      place.removeChild(other.getWrapperElement());
    }
  }, {value: "abc"});
  
  testCM("eventOrder", function(cm) {
    var seen = [];
    cm.on("change", function() {
      if (!seen.length) cm.replaceSelection(".");
      seen.push("change");
    });
    cm.on("cursorActivity", function() {
      cm.replaceSelection("!");
      seen.push("activity");
    });
    cm.replaceSelection("/");
    eq(seen.join(","), "change,change,activity,change");
  });
  
  testCM("splitSpaces_nonspecial", function(cm) {
    eq(byClassName(cm.getWrapperElement(), "cm-invalidchar").length, 0);
  }, {
    specialChars: /[\u00a0]/,
    value: "spaces ->            <- between"
  });
  
  test("core_rmClass", function() {
    var node = document.createElement("div");
    node.className = "foo-bar baz-quux yadda";
    CodeMirror.rmClass(node, "quux");
    eq(node.className, "foo-bar baz-quux yadda");
    CodeMirror.rmClass(node, "baz-quux");
    eq(node.className, "foo-bar yadda");
    CodeMirror.rmClass(node, "yadda");
    eq(node.className, "foo-bar");
    CodeMirror.rmClass(node, "foo-bar");
    eq(node.className, "");
    node.className = " foo ";
    CodeMirror.rmClass(node, "foo");
    eq(node.className, "");
  });
  
  test("core_addClass", function() {
    var node = document.createElement("div");
    CodeMirror.addClass(node, "a");
    eq(node.className, "a");
    CodeMirror.addClass(node, "a");
    eq(node.className, "a");
    CodeMirror.addClass(node, "b");
    eq(node.className, "a b");
    CodeMirror.addClass(node, "a");
    CodeMirror.addClass(node, "b");
    eq(node.className, "a b");
  });
  
  testCM("lineSeparator", function(cm) {
    eq(cm.lineCount(), 3);
    eq(cm.getLine(1), "bar\r");
    eq(cm.getLine(2), "baz\rquux");
    cm.setOption("lineSeparator", "\r");
    eq(cm.lineCount(), 5);
    eq(cm.getLine(4), "quux");
    eq(cm.getValue(), "foo\rbar\r\rbaz\rquux");
    eq(cm.getValue("\n"), "foo\nbar\n\nbaz\nquux");
    cm.setOption("lineSeparator", null);
    cm.setValue("foo\nbar\r\nbaz\rquux");
    eq(cm.lineCount(), 4);
  }, {value: "foo\nbar\r\nbaz\rquux",
      lineSeparator: "\n"});
  
  var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/
  var getChar = function (noExtending) { var res; do {res = String.fromCharCode(Math.floor(Math.random()*0x8ac)); } while ([0x90].indexOf(res.charCodeAt(0)) != -1 || (noExtending && extendingChars.test(res))); return res }
  var getString = function (n) { var res = getChar(true); while (--n > 0) res += getChar(); return res }
  
  function makeItWrapAfter(cm, pos) {
    var firstLineTop = cm.cursorCoords(Pos(0, 0)).top;
    for(var w = 0, posTop; posTop != firstLineTop; ++w) {
      cm.setSize(w);
      posTop = cm.charCoords(pos).top;
    }
  }
  
  function countIf(arr, f) {
    var result = 0
    for (var i = 0; i < arr.length; i++) if (f[arr[i]]) result++
    return result
  }
  
  function testMoveBidi(str) {
    testCM("move_bidi_" + str, function(cm) {
      if (cm.getOption("inputStyle") != "textarea" || !cm.getOption("rtlMoveVisually")) return;
      cm.getScrollerElement().style.fontFamily = "monospace";
      makeItWrapAfter(cm, Pos(0, 5));
  
      var steps = str.length - countIf(str.split(""), function(ch) { return extendingChars.test(ch) });
      var lineBreaks = {}
      lineBreaks[6 - countIf(str.substr(0, 5).split(""), function(ch) { return extendingChars.test(ch) })] = 'w';
      if (str.indexOf("\n") != -1) {
        lineBreaks[steps - 2] = 'n';
      }
  
      // Make sure we are at the visual beginning of the first line
      cm.execCommand("goLineStart");
  
      var prevCoords = cm.cursorCoords(), coords;
      for(var i = 0; i < steps; ++i) {
        cm.execCommand("goCharRight");
        coords = cm.cursorCoords();
        if ((i >= 10 && i <= 12) && !lineBreaks[i] && coords.left < prevCoords.left && coords.top > prevCoords.top) {
          // The first line wraps twice
          lineBreaks[i] = 'w';
        }
        if (!lineBreaks[i]) {
          is(coords.left > prevCoords.left, "In step " + i + ", cursor didn't move right");
          eq(coords.top, prevCoords.top, "In step " + i + ", cursor moved out of line");
        } else {
          is(coords.left < prevCoords.left, i);
          is(coords.top > prevCoords.top, i);
        }
        prevCoords = coords;
      }
  
      cm.execCommand("goCharRight");
      coords = cm.cursorCoords();
      eq(coords.left, prevCoords.left, "Moving " + steps + " steps right didn't reach the end");
      eq(coords.top, prevCoords.top, "Moving " + steps + " steps right didn't reach the end");
  
      for(i = steps - 1; i >= 0; --i) {
        cm.execCommand("goCharLeft");
        coords = cm.cursorCoords();
        if (!(lineBreaks[i] == 'n' || lineBreaks[i + 1] == 'w')) {
          is(coords.left < prevCoords.left, "In step " + i + ", cursor didn't move left");
          eq(coords.top, prevCoords.top, "In step " + i + ", cursor is not at the same line anymore");
        } else {
          is(coords.left > prevCoords.left, i);
          is(coords.top < prevCoords.top, i);
        }
        prevCoords = coords;
      }
  
      cm.execCommand("goCharLeft");
      coords = cm.cursorCoords();
      eq(coords.left, prevCoords.left, "Moving " + steps + " steps left didn't reach the beginning");
      eq(coords.top, prevCoords.top, "Moving " + steps + " steps left didn't reach the beginning");
    }, {value: str, lineWrapping: true})
  };
  
  function testMoveEndBidi(str) {
    testCM("move_end_bidi_" + str, function(cm) {
      cm.getScrollerElement().style.fontFamily = "monospace";
      makeItWrapAfter(cm, Pos(0, 5));
  
      cm.execCommand("goLineStart");
      var pos = cm.doc.getCursor();
      cm.execCommand("goCharLeft");
      eqCursorPos(pos, cm.doc.getCursor());
  
      cm.execCommand("goLineEnd");
      pos = cm.doc.getCursor();
      cm.execCommand("goColumnRight");
      eqCursorPos(pos, cm.doc.getCursor());
    }, {value: str, lineWrapping: true})
  };
  
  var bidiTests = [];
  
  // We don't correctly implement L1 UBA
  // See https://bugzilla.mozilla.org/show_bug.cgi?id=1331501
  // and https://bugs.chromium.org/p/chromium/issues/detail?id=673405
  /*
  bidiTests.push("Say ا ب جabj\nS");
  bidiTests.push("Sayyy ا ا ب ج");
  */
  
  bidiTests.push("Όȝǝڪȉۥ״ۺ׆ɀҩۏ\nҳ");
  if (!window.automatedTests) bidiTests.push("ŌӰтقȤ؁ƥ؅٣ĎȺ١\nϚ");
  bidiTests.push("ٻоҤѕѽΩ־؉ïίքǳ\nٵ");
  bidiTests.push("؅؁ĆՕƿɁǞϮؠȩóć\nď");
  bidiTests.push("RŨďңŪzϢŎƏԖڇڦ\nӈ");
  bidiTests.push("ό׊۷٢ԜһОצЉيčǟ\nѩ");
  bidiTests.push("ۑÚҳҕڬġڹհяųKV\nr");
  bidiTests.push("źڻғúہ4ם1Ƞc1a\nԁ");
  bidiTests.push("ҒȨҟփƞ٦ԓȦڰғâƥ\nڤ");
  bidiTests.push("ϖسՉȏŧΔԛǆĎӟیڡ\nέ");
  bidiTests.push("۹ؼL۵ĺȧКԙػא7״\nم");
  bidiTests.push("ن (ي)\u2009أقواس"); // thin space to throw off Firefox 51's broken white-space compressing behavior
  
  bidiTests.push("քմѧǮßپüŢҍҞўڳ\nӧ");
  
  //bidiTests.push("Count ١ ٢ ٣ ٤");
  //bidiTests.push("ӣאƦϰ؊ȓېÛوը٬ز\nϪ");
  //bidiTests.push("ҾճٳџIՖӻ٥׭֐؜ڏ\nێ");
  //bidiTests.push("ҬÓФ؜ڂį٦Ͽɓڐͳٵ\nՈ");
  //bidiTests.push("aѴNĳȻهˇ҃ڱӧǻֵ\na");
  //bidiTests.push(" a٧ا٢ ب جa\nS");
  
  for (var i = 0; i < bidiTests.length; ++i) {
    testMoveBidi(bidiTests[i]);
    testMoveEndBidi(bidiTests[i]);
  }
  
  /*
  for (var i = 0; i < 5; ++i) {
    testMoveBidi(getString(12) + "\n" + getString(1));
  }
  */
  
  function testCoordsWrappedBidi(str) {
    testCM("coords_wrapped_bidi_" + str, function(cm) {
      cm.getScrollerElement().style.fontFamily = "monospace";
      makeItWrapAfter(cm, Pos(0, 5));
  
      // Make sure we are at the visual beginning of the first line
      var pos = Pos(0, 0), lastPos;
      cm.doc.setCursor(pos);
      do {
        lastPos = pos;
        cm.execCommand("goCharLeft");
        pos = cm.doc.getCursor();
      } while (pos != lastPos)
  
      var top = cm.charCoords(Pos(0, 0)).top, lastTop;
      for (var i = 1; i < str.length; ++i) {
        lastTop = top;
        top = cm.charCoords(Pos(0, i)).top;
        is(top >= lastTop);
      }
    }, {value: str, lineWrapping: true})
  };
  
  testCoordsWrappedBidi("Count ١ ٢ ٣ ٤");
  /*
  for (var i = 0; i < 5; ++i) {
    testCoordsWrappedBidi(getString(50));
  }
  */
  
  testCM("rtl_wrapped_selection", function(cm) {
    cm.setSelection(Pos(0, 10), Pos(0, 190))
    is(byClassName(cm.getWrapperElement(), "CodeMirror-selected").length >= 3)
  }, {value: new Array(10).join(" فتي تم تضمينها فتي تم"), lineWrapping: true})
  
  testCM("bidi_wrapped_selection", function(cm) {
    cm.setSize(cm.charCoords(Pos(0, 10), "editor").left)
    cm.setSelection(Pos(0, 37), Pos(0, 80))
    var blocks = byClassName(cm.getWrapperElement(), "CodeMirror-selected")
    is(blocks.length >= 2)
    is(blocks.length <= 3)
    var boxTop = blocks[0].getBoundingClientRect(), boxBot = blocks[blocks.length - 1].getBoundingClientRect()
    is(boxTop.left > cm.charCoords(Pos(0, 1)).right)
    is(boxBot.right < cm.charCoords(Pos(0, cm.getLine(0).length - 2)).left)
  }, {value: "<p>مفتي11 تم تضمينهفتي تم تضمينها فتي تفتي تم تضمينها فتي تفتي تم تضمينها فتي تفتي تم تضمينها فتي تا فت10ي ت</p>", lineWrapping: true})
  
  testCM("delete_wrapped", function(cm) {
    makeItWrapAfter(cm, Pos(0, 2));
    cm.doc.setCursor(Pos(0, 3, "after"));
    cm.deleteH(-1, "char");
    eq(cm.getLine(0), "1245");
  }, {value: "12345", lineWrapping: true})
  
  testCM("issue_4878", function(cm) {
    if (window.automatedTests) return
    cm.setCursor(Pos(1, 12, "after"));
    cm.moveH(-1, "char");
    eqCursorPos(cm.getCursor(), Pos(0, 113, "before"));
  }, {value: "  في تطبيق السمات مرة واحدة https://github.com/codemirror/CodeMirror/issues/4878#issuecomment-330550964على سبيل المثال <code>\"foo bar\"</code>\n" +
  "  سيتم تعيين", direction: "rtl", lineWrapping: true});
  
  CodeMirror.defineMode("lookahead_mode", function() {
    // Colors text as atom if the line two lines down has an x in it
    return {
      token: function(stream) {
        stream.skipToEnd()
        return /x/.test(stream.lookAhead(2)) ? "atom" : null
      }
    }
  })
  
  testCM("mode_lookahead", function(cm) {
    eq(cm.getTokenAt(Pos(0, 1)).type, "atom")
    eq(cm.getTokenAt(Pos(1, 1)).type, "atom")
    eq(cm.getTokenAt(Pos(2, 1)).type, null)
    cm.replaceRange("\n", Pos(2, 0))
    eq(cm.getTokenAt(Pos(0, 1)).type, null)
    eq(cm.getTokenAt(Pos(1, 1)).type, "atom")
  }, {value: "foo\na\nx\nx\n", mode: "lookahead_mode"})
  