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