Merged revisions 61596-61597 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

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  r61596 | martin.v.loewis | 2008-03-18 23:43:46 -0500 (Di, 18 Mär 2008) | 2 lines

  Import lib2to3.
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  r61597 | martin.v.loewis | 2008-03-18 23:58:04 -0500 (Di, 18 Mär 2008) | 3 lines

  Initialized merge tracking via "svnmerge" with revisions "1-61595" from
  svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3
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1 files changed, 536 insertions, 0 deletions

diff --git a/Lib/lib2to3/tests/test_util.py b/Lib/lib2to3/tests/test_util.py
new file mode 100644
index 0000000..2c22378
--- /dev/null
+++ b/Lib/lib2to3/tests/test_util.py
@@ -0,0 +1,536 @@
+#!/usr/bin/env python2.5
+""" Test suite for the code in fixes.util """
+# Author: Collin Winter
+
+# Testing imports
+from . import support
+
+# Python imports
+import os.path
+
+# Local imports
+from .. import pytree
+from ..fixes import util
+
+
+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 = pytree.Node(util.syms.simple_stmt, node)
+        self.assertEqual(str(node), string)
+
+
+class Test_is_tuple(support.TestCase):
+    def is_tuple(self, string):
+        return util.is_tuple(parse(string, strip_levels=2))
+
+    def test_valid(self):
+        self.failUnless(self.is_tuple("(a, b)"))
+        self.failUnless(self.is_tuple("(a, (b, c))"))
+        self.failUnless(self.is_tuple("((a, (b, c)),)"))
+        self.failUnless(self.is_tuple("(a,)"))
+        self.failUnless(self.is_tuple("()"))
+
+    def test_invalid(self):
+        self.failIf(self.is_tuple("(a)"))
+        self.failIf(self.is_tuple("('foo') % (b, c)"))
+
+
+class Test_is_list(support.TestCase):
+    def is_list(self, string):
+        return util.is_list(parse(string, strip_levels=2))
+
+    def test_valid(self):
+        self.failUnless(self.is_list("[]"))
+        self.failUnless(self.is_list("[a]"))
+        self.failUnless(self.is_list("[a, b]"))
+        self.failUnless(self.is_list("[a, [b, c]]"))
+        self.failUnless(self.is_list("[[a, [b, c]],]"))
+
+    def test_invalid(self):
+        self.failIf(self.is_list("[]+[]"))
+
+
+class Test_Attr(MacroTestCase):
+    def test(self):
+        from ..fixes.util import Attr, Name
+        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):
+        from ..fixes.util import Attr, Name
+
+        attr = Attr(Name("a"), Name("b"))
+        self.assertEqual(type(attr), list)
+
+
+class Test_Name(MacroTestCase):
+    def test(self):
+        from ..fixes.util import Name
+
+        self.assertStr(Name("a"), "a")
+        self.assertStr(Name("foo.foo().bar"), "foo.foo().bar")
+        self.assertStr(Name("a", prefix="b"), "ba")
+
+
+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 = 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 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.failIf(n)
+            n = self.does_tree_import(package, name, string + "\n" + import_)
+            self.failIf(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.failUnless(n)
+            n = self.does_tree_import(package, name, string + "\n" + import_)
+            self.failUnless(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 util.find_binding(name, parse(string), package)
+
+    def test_simple_assignment(self):
+        self.failUnless(self.find_binding("a", "a = b"))
+        self.failUnless(self.find_binding("a", "a = [b, c, d]"))
+        self.failUnless(self.find_binding("a", "a = foo()"))
+        self.failUnless(self.find_binding("a", "a = foo().foo.foo[6][foo]"))
+        self.failIf(self.find_binding("a", "foo = a"))
+        self.failIf(self.find_binding("a", "foo = (a, b, c)"))
+
+    def test_tuple_assignment(self):
+        self.failUnless(self.find_binding("a", "(a,) = b"))
+        self.failUnless(self.find_binding("a", "(a, b, c) = [b, c, d]"))
+        self.failUnless(self.find_binding("a", "(c, (d, a), b) = foo()"))
+        self.failUnless(self.find_binding("a", "(a, b) = foo().foo[6][foo]"))
+        self.failIf(self.find_binding("a", "(foo, b) = (b, a)"))
+        self.failIf(self.find_binding("a", "(foo, (b, c)) = (a, b, c)"))
+
+    def test_list_assignment(self):
+        self.failUnless(self.find_binding("a", "[a] = b"))
+        self.failUnless(self.find_binding("a", "[a, b, c] = [b, c, d]"))
+        self.failUnless(self.find_binding("a", "[c, [d, a], b] = foo()"))
+        self.failUnless(self.find_binding("a", "[a, b] = foo().foo[a][foo]"))
+        self.failIf(self.find_binding("a", "[foo, b] = (b, a)"))
+        self.failIf(self.find_binding("a", "[foo, [b, c]] = (a, b, c)"))
+
+    def test_invalid_assignments(self):
+        self.failIf(self.find_binding("a", "foo.a = 5"))
+        self.failIf(self.find_binding("a", "foo[a] = 5"))
+        self.failIf(self.find_binding("a", "foo(a) = 5"))
+        self.failIf(self.find_binding("a", "foo(a, b) = 5"))
+
+    def test_simple_import(self):
+        self.failUnless(self.find_binding("a", "import a"))
+        self.failUnless(self.find_binding("a", "import b, c, a, d"))
+        self.failIf(self.find_binding("a", "import b"))
+        self.failIf(self.find_binding("a", "import b, c, d"))
+
+    def test_from_import(self):
+        self.failUnless(self.find_binding("a", "from x import a"))
+        self.failUnless(self.find_binding("a", "from a import a"))
+        self.failUnless(self.find_binding("a", "from x import b, c, a, d"))
+        self.failUnless(self.find_binding("a", "from x.b import a"))
+        self.failUnless(self.find_binding("a", "from x.b import b, c, a, d"))
+        self.failIf(self.find_binding("a", "from a import b"))
+        self.failIf(self.find_binding("a", "from a.d import b"))
+        self.failIf(self.find_binding("a", "from d.a import b"))
+
+    def test_import_as(self):
+        self.failUnless(self.find_binding("a", "import b as a"))
+        self.failUnless(self.find_binding("a", "import b as a, c, a as f, d"))
+        self.failIf(self.find_binding("a", "import a as f"))
+        self.failIf(self.find_binding("a", "import b, c as f, d as e"))
+
+    def test_from_import_as(self):
+        self.failUnless(self.find_binding("a", "from x import b as a"))
+        self.failUnless(self.find_binding("a", "from x import g as a, d as b"))
+        self.failUnless(self.find_binding("a", "from x.b import t as a"))
+        self.failUnless(self.find_binding("a", "from x.b import g as a, d"))
+        self.failIf(self.find_binding("a", "from a import b as t"))
+        self.failIf(self.find_binding("a", "from a.d import b as t"))
+        self.failIf(self.find_binding("a", "from d.a import b as t"))
+
+    def test_simple_import_with_package(self):
+        self.failUnless(self.find_binding("b", "import b"))
+        self.failUnless(self.find_binding("b", "import b, c, d"))
+        self.failIf(self.find_binding("b", "import b", "b"))
+        self.failIf(self.find_binding("b", "import b, c, d", "c"))
+
+    def test_from_import_with_package(self):
+        self.failUnless(self.find_binding("a", "from x import a", "x"))
+        self.failUnless(self.find_binding("a", "from a import a", "a"))
+        self.failUnless(self.find_binding("a", "from x import *", "x"))
+        self.failUnless(self.find_binding("a", "from x import b, c, a, d", "x"))
+        self.failUnless(self.find_binding("a", "from x.b import a", "x.b"))
+        self.failUnless(self.find_binding("a", "from x.b import *", "x.b"))
+        self.failUnless(self.find_binding("a", "from x.b import b, c, a, d", "x.b"))
+        self.failIf(self.find_binding("a", "from a import b", "a"))
+        self.failIf(self.find_binding("a", "from a.d import b", "a.d"))
+        self.failIf(self.find_binding("a", "from d.a import b", "a.d"))
+        self.failIf(self.find_binding("a", "from x.y import *", "a.b"))
+
+    def test_import_as_with_package(self):
+        self.failIf(self.find_binding("a", "import b.c as a", "b.c"))
+        self.failIf(self.find_binding("a", "import a as f", "f"))
+        self.failIf(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.failIf(self.find_binding("a", "from x import b as a", "x"))
+        self.failIf(self.find_binding("a", "from x import g as a, d as b", "x"))
+        self.failIf(self.find_binding("a", "from x.b import t as a", "x.b"))
+        self.failIf(self.find_binding("a", "from x.b import g as a, d", "x.b"))
+        self.failIf(self.find_binding("a", "from a import b as t", "a"))
+        self.failIf(self.find_binding("a", "from a import b as t", "b"))
+        self.failIf(self.find_binding("a", "from a import b as t", "t"))
+
+    def test_function_def(self):
+        self.failUnless(self.find_binding("a", "def a(): pass"))
+        self.failUnless(self.find_binding("a", "def a(b, c, d): pass"))
+        self.failUnless(self.find_binding("a", "def a(): b = 7"))
+        self.failIf(self.find_binding("a", "def d(b, (c, a), e): pass"))
+        self.failIf(self.find_binding("a", "def d(a=7): pass"))
+        self.failIf(self.find_binding("a", "def d(a): pass"))
+        self.failIf(self.find_binding("a", "def d(): a = 7"))
+
+        s = """
+            def d():
+                def a():
+                    pass"""
+        self.failIf(self.find_binding("a", s))
+
+    def test_class_def(self):
+        self.failUnless(self.find_binding("a", "class a: pass"))
+        self.failUnless(self.find_binding("a", "class a(): pass"))
+        self.failUnless(self.find_binding("a", "class a(b): pass"))
+        self.failUnless(self.find_binding("a", "class a(b, c=8): pass"))
+        self.failIf(self.find_binding("a", "class d: pass"))
+        self.failIf(self.find_binding("a", "class d(a): pass"))
+        self.failIf(self.find_binding("a", "class d(b, a=7): pass"))
+        self.failIf(self.find_binding("a", "class d(b, *a): pass"))
+        self.failIf(self.find_binding("a", "class d(b, **a): pass"))
+        self.failIf(self.find_binding("a", "class d: a = 7"))
+
+        s = """
+            class d():
+                class a():
+                    pass"""
+        self.failIf(self.find_binding("a", s))
+
+    def test_for(self):
+        self.failUnless(self.find_binding("a", "for a in r: pass"))
+        self.failUnless(self.find_binding("a", "for a, b in r: pass"))
+        self.failUnless(self.find_binding("a", "for (a, b) in r: pass"))
+        self.failUnless(self.find_binding("a", "for c, (a,) in r: pass"))
+        self.failUnless(self.find_binding("a", "for c, (a, b) in r: pass"))
+        self.failUnless(self.find_binding("a", "for c in r: a = c"))
+        self.failIf(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.failUnless(self.find_binding("a", s))
+
+        s = """
+            for b in r:
+                for a, c in b:
+                    pass"""
+        self.failUnless(self.find_binding("a", s))
+
+        s = """
+            for b in r:
+                for (a, c) in b:
+                    pass"""
+        self.failUnless(self.find_binding("a", s))
+
+        s = """
+            for b in r:
+                for (a,) in b:
+                    pass"""
+        self.failUnless(self.find_binding("a", s))
+
+        s = """
+            for b in r:
+                for c, (a, d) in b:
+                    pass"""
+        self.failUnless(self.find_binding("a", s))
+
+        s = """
+            for b in r:
+                for c in b:
+                    a = 7"""
+        self.failUnless(self.find_binding("a", s))
+
+        s = """
+            for b in r:
+                for c in b:
+                    d = a"""
+        self.failIf(self.find_binding("a", s))
+
+        s = """
+            for b in r:
+                for c in a:
+                    d = 7"""
+        self.failIf(self.find_binding("a", s))
+
+    def test_if(self):
+        self.failUnless(self.find_binding("a", "if b in r: a = c"))
+        self.failIf(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.failUnless(self.find_binding("a", s))
+
+        s = """
+            if b in r:
+                if c in d:
+                    c = a"""
+        self.failIf(self.find_binding("a", s))
+
+    def test_while(self):
+        self.failUnless(self.find_binding("a", "while b in r: a = c"))
+        self.failIf(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.failUnless(self.find_binding("a", s))
+
+        s = """
+            while b in r:
+                while c in d:
+                    c = a"""
+        self.failIf(self.find_binding("a", s))
+
+    def test_try_except(self):
+        s = """
+            try:
+                a = 6
+            except:
+                b = 8"""
+        self.failUnless(self.find_binding("a", s))
+
+        s = """
+            try:
+                b = 8
+            except:
+                a = 6"""
+        self.failUnless(self.find_binding("a", s))
+
+        s = """
+            try:
+                b = 8
+            except KeyError:
+                pass
+            except:
+                a = 6"""
+        self.failUnless(self.find_binding("a", s))
+
+        s = """
+            try:
+                b = 8
+            except:
+                b = 6"""
+        self.failIf(self.find_binding("a", s))
+
+    def test_try_except_nested(self):
+        s = """
+            try:
+                try:
+                    a = 6
+                except:
+                    pass
+            except:
+                b = 8"""
+        self.failUnless(self.find_binding("a", s))
+
+        s = """
+            try:
+                b = 8
+            except:
+                try:
+                    a = 6
+                except:
+                    pass"""
+        self.failUnless(self.find_binding("a", s))
+
+        s = """
+            try:
+                b = 8
+            except:
+                try:
+                    pass
+                except:
+                    a = 6"""
+        self.failUnless(self.find_binding("a", s))
+
+        s = """
+            try:
+                try:
+                    b = 8
+                except KeyError:
+                    pass
+                except:
+                    a = 6
+            except:
+                pass"""
+        self.failUnless(self.find_binding("a", s))
+
+        s = """
+            try:
+                pass
+            except:
+                try:
+                    b = 8
+                except KeyError:
+                    pass
+                except:
+                    a = 6"""
+        self.failUnless(self.find_binding("a", s))
+
+        s = """
+            try:
+                b = 8
+            except:
+                b = 6"""
+        self.failIf(self.find_binding("a", s))
+
+        s = """
+            try:
+                try:
+                    b = 8
+                except:
+                    c = d
+            except:
+                try:
+                    b = 6
+                except:
+                    t = 8
+                except:
+                    o = y"""
+        self.failIf(self.find_binding("a", s))
+
+    def test_try_except_finally(self):
+        s = """
+            try:
+                c = 6
+            except:
+                b = 8
+            finally:
+                a = 9"""
+        self.failUnless(self.find_binding("a", s))
+
+        s = """
+            try:
+                b = 8
+            finally:
+                a = 6"""
+        self.failUnless(self.find_binding("a", s))
+
+        s = """
+            try:
+                b = 8
+            finally:
+                b = 6"""
+        self.failIf(self.find_binding("a", s))
+
+        s = """
+            try:
+                b = 8
+            except:
+                b = 9
+            finally:
+                b = 6"""
+        self.failIf(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.failUnless(self.find_binding("a", s))
+
+        s = """
+            try:
+                b = 8
+            finally:
+                try:
+                    pass
+                finally:
+                    a = 6"""
+        self.failUnless(self.find_binding("a", s))
+
+        s = """
+            try:
+                b = 8
+            finally:
+                try:
+                    b = 6
+                finally:
+                    b = 7"""
+        self.failIf(self.find_binding("a", s))
+
+
+if __name__ == "__main__":
+    import __main__
+    support.run_all_tests(__main__)