| """ 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]), " ") |
