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| """ Test suite for the code in fixer_util """ | |
| # Testing imports | |
| from . import support | |
| # Local imports | |
| from lib2to3.pytree import Node, Leaf | |
| from lib2to3 import fixer_util | |
| from lib2to3.fixer_util import Attr, Name, Call, Comma | |
| from lib2to3.pgen2 import token | |
| def parse(code, strip_levels=0): | |
| # The topmost node is file_input, which we don't care about. | |
| # The next-topmost node is a *_stmt node, which we also don't care about | |
| tree = support.parse_string(code) | |
| for i in range(strip_levels): | |
| tree = tree.children[0] | |
| tree.parent = None | |
| return tree | |
| class MacroTestCase(support.TestCase): | |
| def assertStr(self, node, string): | |
| if isinstance(node, (tuple, list)): | |
| node = Node(fixer_util.syms.simple_stmt, node) | |
| self.assertEqual(str(node), string) | |
| class Test_is_tuple(support.TestCase): | |
| def is_tuple(self, string): | |
| return fixer_util.is_tuple(parse(string, strip_levels=2)) | |
| def test_valid(self): | |
| self.assertTrue(self.is_tuple("(a, b)")) | |
| self.assertTrue(self.is_tuple("(a, (b, c))")) | |
| self.assertTrue(self.is_tuple("((a, (b, c)),)")) | |
| self.assertTrue(self.is_tuple("(a,)")) | |
| self.assertTrue(self.is_tuple("()")) | |
| def test_invalid(self): | |
| self.assertFalse(self.is_tuple("(a)")) | |
| self.assertFalse(self.is_tuple("('foo') % (b, c)")) | |
| class Test_is_list(support.TestCase): | |
| def is_list(self, string): | |
| return fixer_util.is_list(parse(string, strip_levels=2)) | |
| def test_valid(self): | |
| self.assertTrue(self.is_list("[]")) | |
| self.assertTrue(self.is_list("[a]")) | |
| self.assertTrue(self.is_list("[a, b]")) | |
| self.assertTrue(self.is_list("[a, [b, c]]")) | |
| self.assertTrue(self.is_list("[[a, [b, c]],]")) | |
| def test_invalid(self): | |
| self.assertFalse(self.is_list("[]+[]")) | |
| class Test_Attr(MacroTestCase): | |
| def test(self): | |
| call = parse("foo()", strip_levels=2) | |
| self.assertStr(Attr(Name("a"), Name("b")), "a.b") | |
| self.assertStr(Attr(call, Name("b")), "foo().b") | |
| def test_returns(self): | |
| attr = Attr(Name("a"), Name("b")) | |
| self.assertEqual(type(attr), list) | |
| class Test_Name(MacroTestCase): | |
| def test(self): | |
| self.assertStr(Name("a"), "a") | |
| self.assertStr(Name("foo.foo().bar"), "foo.foo().bar") | |
| self.assertStr(Name("a", prefix="b"), "ba") | |
| class Test_Call(MacroTestCase): | |
| def _Call(self, name, args=None, prefix=None): | |
| """Help the next test""" | |
| children = [] | |
| if isinstance(args, list): | |
| for arg in args: | |
| children.append(arg) | |
| children.append(Comma()) | |
| children.pop() | |
| return Call(Name(name), children, prefix) | |
| def test(self): | |
| kids = [None, | |
| [Leaf(token.NUMBER, 1), Leaf(token.NUMBER, 2), | |
| Leaf(token.NUMBER, 3)], | |
| [Leaf(token.NUMBER, 1), Leaf(token.NUMBER, 3), | |
| Leaf(token.NUMBER, 2), Leaf(token.NUMBER, 4)], | |
| [Leaf(token.STRING, "b"), Leaf(token.STRING, "j", prefix=" ")] | |
| ] | |
| self.assertStr(self._Call("A"), "A()") | |
| self.assertStr(self._Call("b", kids[1]), "b(1,2,3)") | |
| self.assertStr(self._Call("a.b().c", kids[2]), "a.b().c(1,3,2,4)") | |
| self.assertStr(self._Call("d", kids[3], prefix=" "), " d(b, j)") | |
| class Test_does_tree_import(support.TestCase): | |
| def _find_bind_rec(self, name, node): | |
| # Search a tree for a binding -- used to find the starting | |
| # point for these tests. | |
| c = fixer_util.find_binding(name, node) | |
| if c: return c | |
| for child in node.children: | |
| c = self._find_bind_rec(name, child) | |
| if c: return c | |
| def does_tree_import(self, package, name, string): | |
| node = parse(string) | |
| # Find the binding of start -- that's what we'll go from | |
| node = self._find_bind_rec('start', node) | |
| return fixer_util.does_tree_import(package, name, node) | |
| def try_with(self, string): | |
| failing_tests = (("a", "a", "from a import b"), | |
| ("a.d", "a", "from a.d import b"), | |
| ("d.a", "a", "from d.a import b"), | |
| (None, "a", "import b"), | |
| (None, "a", "import b, c, d")) | |
| for package, name, import_ in failing_tests: | |
| n = self.does_tree_import(package, name, import_ + "\n" + string) | |
| self.assertFalse(n) | |
| n = self.does_tree_import(package, name, string + "\n" + import_) | |
| self.assertFalse(n) | |
| passing_tests = (("a", "a", "from a import a"), | |
| ("x", "a", "from x import a"), | |
| ("x", "a", "from x import b, c, a, d"), | |
| ("x.b", "a", "from x.b import a"), | |
| ("x.b", "a", "from x.b import b, c, a, d"), | |
| (None, "a", "import a"), | |
| (None, "a", "import b, c, a, d")) | |
| for package, name, import_ in passing_tests: | |
| n = self.does_tree_import(package, name, import_ + "\n" + string) | |
| self.assertTrue(n) | |
| n = self.does_tree_import(package, name, string + "\n" + import_) | |
| self.assertTrue(n) | |
| def test_in_function(self): | |
| self.try_with("def foo():\n\tbar.baz()\n\tstart=3") | |
| class Test_find_binding(support.TestCase): | |
| def find_binding(self, name, string, package=None): | |
| return fixer_util.find_binding(name, parse(string), package) | |
| def test_simple_assignment(self): | |
| self.assertTrue(self.find_binding("a", "a = b")) | |
| self.assertTrue(self.find_binding("a", "a = [b, c, d]")) | |
| self.assertTrue(self.find_binding("a", "a = foo()")) | |
| self.assertTrue(self.find_binding("a", "a = foo().foo.foo[6][foo]")) | |
| self.assertFalse(self.find_binding("a", "foo = a")) | |
| self.assertFalse(self.find_binding("a", "foo = (a, b, c)")) | |
| def test_tuple_assignment(self): | |
| self.assertTrue(self.find_binding("a", "(a,) = b")) | |
| self.assertTrue(self.find_binding("a", "(a, b, c) = [b, c, d]")) | |
| self.assertTrue(self.find_binding("a", "(c, (d, a), b) = foo()")) | |
| self.assertTrue(self.find_binding("a", "(a, b) = foo().foo[6][foo]")) | |
| self.assertFalse(self.find_binding("a", "(foo, b) = (b, a)")) | |
| self.assertFalse(self.find_binding("a", "(foo, (b, c)) = (a, b, c)")) | |
| def test_list_assignment(self): | |
| self.assertTrue(self.find_binding("a", "[a] = b")) | |
| self.assertTrue(self.find_binding("a", "[a, b, c] = [b, c, d]")) | |
| self.assertTrue(self.find_binding("a", "[c, [d, a], b] = foo()")) | |
| self.assertTrue(self.find_binding("a", "[a, b] = foo().foo[a][foo]")) | |
| self.assertFalse(self.find_binding("a", "[foo, b] = (b, a)")) | |
| self.assertFalse(self.find_binding("a", "[foo, [b, c]] = (a, b, c)")) | |
| def test_invalid_assignments(self): | |
| self.assertFalse(self.find_binding("a", "foo.a = 5")) | |
| self.assertFalse(self.find_binding("a", "foo[a] = 5")) | |
| self.assertFalse(self.find_binding("a", "foo(a) = 5")) | |
| self.assertFalse(self.find_binding("a", "foo(a, b) = 5")) | |
| def test_simple_import(self): | |
| self.assertTrue(self.find_binding("a", "import a")) | |
| self.assertTrue(self.find_binding("a", "import b, c, a, d")) | |
| self.assertFalse(self.find_binding("a", "import b")) | |
| self.assertFalse(self.find_binding("a", "import b, c, d")) | |
| def test_from_import(self): | |
| self.assertTrue(self.find_binding("a", "from x import a")) | |
| self.assertTrue(self.find_binding("a", "from a import a")) | |
| self.assertTrue(self.find_binding("a", "from x import b, c, a, d")) | |
| self.assertTrue(self.find_binding("a", "from x.b import a")) | |
| self.assertTrue(self.find_binding("a", "from x.b import b, c, a, d")) | |
| self.assertFalse(self.find_binding("a", "from a import b")) | |
| self.assertFalse(self.find_binding("a", "from a.d import b")) | |
| self.assertFalse(self.find_binding("a", "from d.a import b")) | |
| def test_import_as(self): | |
| self.assertTrue(self.find_binding("a", "import b as a")) | |
| self.assertTrue(self.find_binding("a", "import b as a, c, a as f, d")) | |
| self.assertFalse(self.find_binding("a", "import a as f")) | |
| self.assertFalse(self.find_binding("a", "import b, c as f, d as e")) | |
| def test_from_import_as(self): | |
| self.assertTrue(self.find_binding("a", "from x import b as a")) | |
| self.assertTrue(self.find_binding("a", "from x import g as a, d as b")) | |
| self.assertTrue(self.find_binding("a", "from x.b import t as a")) | |
| self.assertTrue(self.find_binding("a", "from x.b import g as a, d")) | |
| self.assertFalse(self.find_binding("a", "from a import b as t")) | |
| self.assertFalse(self.find_binding("a", "from a.d import b as t")) | |
| self.assertFalse(self.find_binding("a", "from d.a import b as t")) | |
| def test_simple_import_with_package(self): | |
| self.assertTrue(self.find_binding("b", "import b")) | |
| self.assertTrue(self.find_binding("b", "import b, c, d")) | |
| self.assertFalse(self.find_binding("b", "import b", "b")) | |
| self.assertFalse(self.find_binding("b", "import b, c, d", "c")) | |
| def test_from_import_with_package(self): | |
| self.assertTrue(self.find_binding("a", "from x import a", "x")) | |
| self.assertTrue(self.find_binding("a", "from a import a", "a")) | |
| self.assertTrue(self.find_binding("a", "from x import *", "x")) | |
| self.assertTrue(self.find_binding("a", "from x import b, c, a, d", "x")) | |
| self.assertTrue(self.find_binding("a", "from x.b import a", "x.b")) | |
| self.assertTrue(self.find_binding("a", "from x.b import *", "x.b")) | |
| self.assertTrue(self.find_binding("a", "from x.b import b, c, a, d", "x.b")) | |
| self.assertFalse(self.find_binding("a", "from a import b", "a")) | |
| self.assertFalse(self.find_binding("a", "from a.d import b", "a.d")) | |
| self.assertFalse(self.find_binding("a", "from d.a import b", "a.d")) | |
| self.assertFalse(self.find_binding("a", "from x.y import *", "a.b")) | |
| def test_import_as_with_package(self): | |
| self.assertFalse(self.find_binding("a", "import b.c as a", "b.c")) | |
| self.assertFalse(self.find_binding("a", "import a as f", "f")) | |
| self.assertFalse(self.find_binding("a", "import a as f", "a")) | |
| def test_from_import_as_with_package(self): | |
| # Because it would take a lot of special-case code in the fixers | |
| # to deal with from foo import bar as baz, we'll simply always | |
| # fail if there is an "from ... import ... as ..." | |
| self.assertFalse(self.find_binding("a", "from x import b as a", "x")) | |
| self.assertFalse(self.find_binding("a", "from x import g as a, d as b", "x")) | |
| self.assertFalse(self.find_binding("a", "from x.b import t as a", "x.b")) | |
| self.assertFalse(self.find_binding("a", "from x.b import g as a, d", "x.b")) | |
| self.assertFalse(self.find_binding("a", "from a import b as t", "a")) | |
| self.assertFalse(self.find_binding("a", "from a import b as t", "b")) | |
| self.assertFalse(self.find_binding("a", "from a import b as t", "t")) | |
| def test_function_def(self): | |
| self.assertTrue(self.find_binding("a", "def a(): pass")) | |
| self.assertTrue(self.find_binding("a", "def a(b, c, d): pass")) | |
| self.assertTrue(self.find_binding("a", "def a(): b = 7")) | |
| self.assertFalse(self.find_binding("a", "def d(b, (c, a), e): pass")) | |
| self.assertFalse(self.find_binding("a", "def d(a=7): pass")) | |
| self.assertFalse(self.find_binding("a", "def d(a): pass")) | |
| self.assertFalse(self.find_binding("a", "def d(): a = 7")) | |
| s = """ | |
| def d(): | |
| def a(): | |
| pass""" | |
| self.assertFalse(self.find_binding("a", s)) | |
| def test_class_def(self): | |
| self.assertTrue(self.find_binding("a", "class a: pass")) | |
| self.assertTrue(self.find_binding("a", "class a(): pass")) | |
| self.assertTrue(self.find_binding("a", "class a(b): pass")) | |
| self.assertTrue(self.find_binding("a", "class a(b, c=8): pass")) | |
| self.assertFalse(self.find_binding("a", "class d: pass")) | |
| self.assertFalse(self.find_binding("a", "class d(a): pass")) | |
| self.assertFalse(self.find_binding("a", "class d(b, a=7): pass")) | |
| self.assertFalse(self.find_binding("a", "class d(b, *a): pass")) | |
| self.assertFalse(self.find_binding("a", "class d(b, **a): pass")) | |
| self.assertFalse(self.find_binding("a", "class d: a = 7")) | |
| s = """ | |
| class d(): | |
| class a(): | |
| pass""" | |
| self.assertFalse(self.find_binding("a", s)) | |
| def test_for(self): | |
| self.assertTrue(self.find_binding("a", "for a in r: pass")) | |
| self.assertTrue(self.find_binding("a", "for a, b in r: pass")) | |
| self.assertTrue(self.find_binding("a", "for (a, b) in r: pass")) | |
| self.assertTrue(self.find_binding("a", "for c, (a,) in r: pass")) | |
| self.assertTrue(self.find_binding("a", "for c, (a, b) in r: pass")) | |
| self.assertTrue(self.find_binding("a", "for c in r: a = c")) | |
| self.assertFalse(self.find_binding("a", "for c in a: pass")) | |
| def test_for_nested(self): | |
| s = """ | |
| for b in r: | |
| for a in b: | |
| pass""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| for b in r: | |
| for a, c in b: | |
| pass""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| for b in r: | |
| for (a, c) in b: | |
| pass""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| for b in r: | |
| for (a,) in b: | |
| pass""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| for b in r: | |
| for c, (a, d) in b: | |
| pass""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| for b in r: | |
| for c in b: | |
| a = 7""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| for b in r: | |
| for c in b: | |
| d = a""" | |
| self.assertFalse(self.find_binding("a", s)) | |
| s = """ | |
| for b in r: | |
| for c in a: | |
| d = 7""" | |
| self.assertFalse(self.find_binding("a", s)) | |
| def test_if(self): | |
| self.assertTrue(self.find_binding("a", "if b in r: a = c")) | |
| self.assertFalse(self.find_binding("a", "if a in r: d = e")) | |
| def test_if_nested(self): | |
| s = """ | |
| if b in r: | |
| if c in d: | |
| a = c""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| if b in r: | |
| if c in d: | |
| c = a""" | |
| self.assertFalse(self.find_binding("a", s)) | |
| def test_while(self): | |
| self.assertTrue(self.find_binding("a", "while b in r: a = c")) | |
| self.assertFalse(self.find_binding("a", "while a in r: d = e")) | |
| def test_while_nested(self): | |
| s = """ | |
| while b in r: | |
| while c in d: | |
| a = c""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| while b in r: | |
| while c in d: | |
| c = a""" | |
| self.assertFalse(self.find_binding("a", s)) | |
| def test_try_except(self): | |
| s = """ | |
| try: | |
| a = 6 | |
| except: | |
| b = 8""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| try: | |
| b = 8 | |
| except: | |
| a = 6""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| try: | |
| b = 8 | |
| except KeyError: | |
| pass | |
| except: | |
| a = 6""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| try: | |
| b = 8 | |
| except: | |
| b = 6""" | |
| self.assertFalse(self.find_binding("a", s)) | |
| def test_try_except_nested(self): | |
| s = """ | |
| try: | |
| try: | |
| a = 6 | |
| except: | |
| pass | |
| except: | |
| b = 8""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| try: | |
| b = 8 | |
| except: | |
| try: | |
| a = 6 | |
| except: | |
| pass""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| try: | |
| b = 8 | |
| except: | |
| try: | |
| pass | |
| except: | |
| a = 6""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| try: | |
| try: | |
| b = 8 | |
| except KeyError: | |
| pass | |
| except: | |
| a = 6 | |
| except: | |
| pass""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| try: | |
| pass | |
| except: | |
| try: | |
| b = 8 | |
| except KeyError: | |
| pass | |
| except: | |
| a = 6""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| try: | |
| b = 8 | |
| except: | |
| b = 6""" | |
| self.assertFalse(self.find_binding("a", s)) | |
| s = """ | |
| try: | |
| try: | |
| b = 8 | |
| except: | |
| c = d | |
| except: | |
| try: | |
| b = 6 | |
| except: | |
| t = 8 | |
| except: | |
| o = y""" | |
| self.assertFalse(self.find_binding("a", s)) | |
| def test_try_except_finally(self): | |
| s = """ | |
| try: | |
| c = 6 | |
| except: | |
| b = 8 | |
| finally: | |
| a = 9""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| try: | |
| b = 8 | |
| finally: | |
| a = 6""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| try: | |
| b = 8 | |
| finally: | |
| b = 6""" | |
| self.assertFalse(self.find_binding("a", s)) | |
| s = """ | |
| try: | |
| b = 8 | |
| except: | |
| b = 9 | |
| finally: | |
| b = 6""" | |
| self.assertFalse(self.find_binding("a", s)) | |
| def test_try_except_finally_nested(self): | |
| s = """ | |
| try: | |
| c = 6 | |
| except: | |
| b = 8 | |
| finally: | |
| try: | |
| a = 9 | |
| except: | |
| b = 9 | |
| finally: | |
| c = 9""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| try: | |
| b = 8 | |
| finally: | |
| try: | |
| pass | |
| finally: | |
| a = 6""" | |
| self.assertTrue(self.find_binding("a", s)) | |
| s = """ | |
| try: | |
| b = 8 | |
| finally: | |
| try: | |
| b = 6 | |
| finally: | |
| b = 7""" | |
| self.assertFalse(self.find_binding("a", s)) | |
| class Test_touch_import(support.TestCase): | |
| def test_after_docstring(self): | |
| node = parse('"""foo"""\nbar()') | |
| fixer_util.touch_import(None, "foo", node) | |
| self.assertEqual(str(node), '"""foo"""\nimport foo\nbar()\n\n') | |
| def test_after_imports(self): | |
| node = parse('"""foo"""\nimport bar\nbar()') | |
| fixer_util.touch_import(None, "foo", node) | |
| self.assertEqual(str(node), '"""foo"""\nimport bar\nimport foo\nbar()\n\n') | |
| def test_beginning(self): | |
| node = parse('bar()') | |
| fixer_util.touch_import(None, "foo", node) | |
| self.assertEqual(str(node), 'import foo\nbar()\n\n') | |
| def test_from_import(self): | |
| node = parse('bar()') | |
| fixer_util.touch_import("html", "escape", node) | |
| self.assertEqual(str(node), 'from html import escape\nbar()\n\n') | |
| def test_name_import(self): | |
| node = parse('bar()') | |
| fixer_util.touch_import(None, "cgi", node) | |
| self.assertEqual(str(node), 'import cgi\nbar()\n\n') | |
| class Test_find_indentation(support.TestCase): | |
| def test_nothing(self): | |
| fi = fixer_util.find_indentation | |
| node = parse("node()") | |
| self.assertEqual(fi(node), "") | |
| node = parse("") | |
| self.assertEqual(fi(node), "") | |
| def test_simple(self): | |
| fi = fixer_util.find_indentation | |
| node = parse("def f():\n x()") | |
| self.assertEqual(fi(node), "") | |
| self.assertEqual(fi(node.children[0].children[4].children[2]), " ") | |
| node = parse("def f():\n x()\n y()") | |
| self.assertEqual(fi(node.children[0].children[4].children[4]), " ") | |