text: // Copyright 2008 the V8 project authors. All rights reserved.
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are
  // met:
  //
  //     * Redistributions of source code must retain the above copyright
  //       notice, this list of conditions and the following disclaimer.
  //     * Redistributions in binary form must reproduce the above
  //       copyright notice, this list of conditions and the following
  //       disclaimer in the documentation and/or other materials provided
  //       with the distribution.
  //     * Neither the name of Google Inc. nor the names of its
  //       contributors may be used to endorse or promote products derived
  //       from this software without specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  function MjsUnitAssertionError(message) {
    this.message = message;
    // This allows fetching the stack trace using TryCatch::StackTrace.
    this.stack = new Error("").stack;
  }
  
  /*
   * This file is included in all mini jsunit test cases.  The test
   * framework expects lines that signal failed tests to start with
   * the f-word and ignore all other lines.
   */
  
  
  MjsUnitAssertionError.prototype.toString = function () {
    return this.message;
  };
  
  
  // Expected and found values the same objects, or the same primitive
  // values.
  // For known primitive values, please use assertEquals.
  var assertSame;
  
  // Expected and found values are identical primitive values or functions
  // or similarly structured objects (checking internal properties
  // of, e.g., Number and Date objects, the elements of arrays
  // and the properties of non-Array objects).
  var assertEquals;
  
  
  // The difference between expected and found value is within certain tolerance.
  var assertEqualsDelta;
  
  // The found object is an Array with the same length and elements
  // as the expected object. The expected object doesn't need to be an Array,
  // as long as it's "array-ish".
  var assertArrayEquals;
  
  // The found object must have the same enumerable properties as the
  // expected object. The type of object isn't checked.
  var assertPropertiesEqual;
  
  // Assert that the string conversion of the found value is equal to
  // the expected string. Only kept for backwards compatability, please
  // check the real structure of the found value.
  var assertToStringEquals;
  
  // Checks that the found value is true. Use with boolean expressions
  // for tests that doesn't have their own assertXXX function.
  var assertTrue;
  
  // Checks that the found value is false.
  var assertFalse;
  
  // Checks that the found value is null. Kept for historical compatibility,
  // please just use assertEquals(null, expected).
  var assertNull;
  
  // Checks that the found value is *not* null.
  var assertNotNull;
  
  // Assert that the passed function or eval code throws an exception.
  // The optional second argument is an exception constructor that the
  // thrown exception is checked against with "instanceof".
  // The optional third argument is a message type string that is compared
  // to the type property on the thrown exception.
  var assertThrows;
  
  // Assert that the passed function or eval code does not throw an exception.
  var assertDoesNotThrow;
  
  // Asserts that the found value is an instance of the constructor passed
  // as the second argument.
  var assertInstanceof;
  
  // Assert that this code is never executed (i.e., always fails if executed).
  var assertUnreachable;
  
  // Assert that the function code is (not) optimized.  If "no sync" is passed
  // as second argument, we do not wait for the concurrent optimization thread to
  // finish when polling for optimization status.
  // Only works with --allow-natives-syntax.
  var assertOptimized;
  var assertUnoptimized;
  
  
  (function () {  // Scope for utility functions.
  
    function classOf(object) {
      // Argument must not be null or undefined.
      var string = Object.prototype.toString.call(object);
      // String has format [object <ClassName>].
      return string.substring(8, string.length - 1);
    }
  
  
    function PrettyPrint(value) {
      switch (typeof value) {
        case "string":
          return JSON.stringify(value);
        case "number":
          if (value === 0 && (1 / value) < 0) return "-0";
          // FALLTHROUGH.
        case "boolean":
        case "undefined":
        case "function":
          return String(value);
        case "object":
          if (value === null) return "null";
          var objectClass = classOf(value);
          switch (objectClass) {
          case "Number":
          case "String":
          case "Boolean":
          case "Date":
            return objectClass + "(" + PrettyPrint(value.valueOf()) + ")";
          case "RegExp":
            return value.toString();
          case "Array":
            return "[" + value.map(PrettyPrintArrayElement).join(",") + "]";
          case "Object":
            break;
          default:
            return objectClass + "()";
          }
          // [[Class]] is "Object".
          var name = value.constructor.name;
          if (name) return name + "()";
          return "Object()";
        default:
          return "-- unknown value --";
      }
    }
  
  
    function PrettyPrintArrayElement(value, index, array) {
      if (value === undefined && !(index in array)) return "";
      return PrettyPrint(value);
    }
  
  
    function fail(expectedText, found, name_opt) {
      var message = "Fail" + "ure";
      if (name_opt) {
        // Fix this when we ditch the old test runner.
        message += " (" + name_opt + ")";
      }
  
      message += ": expected <" + expectedText +
          "> found <" + PrettyPrint(found) + ">";
      throw new MjsUnitAssertionError(message);
    }
  
  
    function deepObjectEquals(a, b) {
      var aProps = Object.keys(a);
      aProps.sort();
      var bProps = Object.keys(b);
      bProps.sort();
      if (!deepEquals(aProps, bProps)) {
        return false;
      }
      for (var i = 0; i < aProps.length; i++) {
        if (!deepEquals(a[aProps[i]], b[aProps[i]])) {
          return false;
        }
      }
      return true;
    }
  
  
    function deepEquals(a, b) {
      if (a === b) {
        // Check for -0.
        if (a === 0) return (1 / a) === (1 / b);
        return true;
      }
      if (typeof a !== typeof b) return false;
      if (typeof a === "number") return isNaN(a) && isNaN(b);
      if (typeof a !== "object" && typeof a !== "function") return false;
      // Neither a nor b is primitive.
      var objectClass = classOf(a);
      if (objectClass !== classOf(b)) return false;
      if (objectClass === "RegExp") {
        // For RegExp, just compare pattern and flags using its toString.
        return (a.toString() === b.toString());
      }
      // Functions are only identical to themselves.
      if (objectClass === "Function") return false;
      if (objectClass === "Array") {
        var elementCount = 0;
        if (a.length !== b.length) {
          return false;
        }
        for (var i = 0; i < a.length; i++) {
          if (!deepEquals(a[i], b[i])) return false;
        }
        return true;
      }
      if (objectClass === "String" || objectClass === "Number" ||
        objectClass === "Boolean" || objectClass === "Date") {
        if (a.valueOf() !== b.valueOf()) return false;
      }
      return deepObjectEquals(a, b);
    }
  
    assertSame = function assertSame(expected, found, name_opt) {
      // TODO(mstarzinger): We should think about using Harmony's egal operator
      // or the function equivalent Object.is() here.
      if (found === expected) {
        if (expected !== 0 || (1 / expected) === (1 / found)) return;
      } else if ((expected !== expected) && (found !== found)) {
        return;
      }
      fail(PrettyPrint(expected), found, name_opt);
    };
  
  
    assertEquals = function assertEquals(expected, found, name_opt) {
      if (!deepEquals(found, expected)) {
        fail(PrettyPrint(expected), found, name_opt);
      }
    };
  
  
    assertEqualsDelta =
        function assertEqualsDelta(expected, found, delta, name_opt) {
      assertTrue(Math.abs(expected - found) <= delta, name_opt);
    };
  
  
    assertArrayEquals = function assertArrayEquals(expected, found, name_opt) {
      var start = "";
      if (name_opt) {
        start = name_opt + " - ";
      }
      assertEquals(expected.length, found.length, start + "array length");
      if (expected.length === found.length) {
        for (var i = 0; i < expected.length; ++i) {
          assertEquals(expected[i], found[i],
                       start + "array element at index " + i);
        }
      }
    };
  
  
    assertPropertiesEqual = function assertPropertiesEqual(expected, found,
                                                           name_opt) {
      // Check properties only.
      if (!deepObjectEquals(expected, found)) {
        fail(expected, found, name_opt);
      }
    };
  
  
    assertToStringEquals = function assertToStringEquals(expected, found,
                                                         name_opt) {
      if (expected !== String(found)) {
        fail(expected, found, name_opt);
      }
    };
  
  
    assertTrue = function assertTrue(value, name_opt) {
      assertEquals(true, value, name_opt);
    };
  
  
    assertFalse = function assertFalse(value, name_opt) {
      assertEquals(false, value, name_opt);
    };
  
  
    assertNull = function assertNull(value, name_opt) {
      if (value !== null) {
        fail("null", value, name_opt);
      }
    };
  
  
    assertNotNull = function assertNotNull(value, name_opt) {
      if (value === null) {
        fail("not null", value, name_opt);
      }
    };
  
  
    assertThrows = function assertThrows(code, type_opt, cause_opt) {
      var threwException = true;
      try {
        if (typeof code === 'function') {
          code();
        } else {
          eval(code);
        }
        threwException = false;
      } catch (e) {
        if (typeof type_opt === 'function') {
          assertInstanceof(e, type_opt);
        }
        if (arguments.length >= 3) {
          assertEquals(e.type, cause_opt);
        }
        // Success.
        return;
      }
      throw new MjsUnitAssertionError("Did not throw exception");
    };
  
  
    assertInstanceof = function assertInstanceof(obj, type) {
      if (!(obj instanceof type)) {
        var actualTypeName = null;
        var actualConstructor = Object.getPrototypeOf(obj).constructor;
        if (typeof actualConstructor === "function") {
          actualTypeName = actualConstructor.name || String(actualConstructor);
        }
        fail("Object <" + PrettyPrint(obj) + "> is not an instance of <" +
                 (type.name || type) + ">" +
                 (actualTypeName ? " but of < " + actualTypeName + ">" : ""));
      }
    };
  
  
     assertDoesNotThrow = function assertDoesNotThrow(code, name_opt) {
      try {
        if (typeof code === 'function') {
          code();
        } else {
          eval(code);
        }
      } catch (e) {
        fail("threw an exception: ", e.message || e, name_opt);
      }
    };
  
    assertUnreachable = function assertUnreachable(name_opt) {
      // Fix this when we ditch the old test runner.
      var message = "Fail" + "ure: unreachable";
      if (name_opt) {
        message += " - " + name_opt;
      }
      throw new MjsUnitAssertionError(message);
    };
  
    var OptimizationStatusImpl = undefined;
  
    var OptimizationStatus = function(fun, sync_opt) {
      if (OptimizationStatusImpl === undefined) {
        try {
          OptimizationStatusImpl = new Function(
              "fun", "sync", "return %GetOptimizationStatus(fun, sync);");
        } catch (e) {
          throw new Error("natives syntax not allowed");
        }
      }
      return OptimizationStatusImpl(fun, sync_opt);
    }
  
    assertUnoptimized = function assertUnoptimized(fun, sync_opt, name_opt) {
      if (sync_opt === undefined) sync_opt = "";
      assertTrue(OptimizationStatus(fun, sync_opt) !== 1, name_opt);
    }
  
    assertOptimized = function assertOptimized(fun, sync_opt, name_opt) {
      if (sync_opt === undefined) sync_opt = "";
      assertTrue(OptimizationStatus(fun, sync_opt) !== 2, name_opt);
    }
  
  })();
  