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f37eb3a184
svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3 ........ r83852 | benjamin.peterson | 2010-08-08 15:45:44 -0500 (Sun, 08 Aug 2010) | 1 line wrap with parens ........ r83853 | benjamin.peterson | 2010-08-08 15:46:31 -0500 (Sun, 08 Aug 2010) | 1 line use parens ........ r83857 | benjamin.peterson | 2010-08-08 15:59:49 -0500 (Sun, 08 Aug 2010) | 1 line things which use touch_import should be pre order ........ r84042 | george.boutsioukis | 2010-08-14 16:10:19 -0500 (Sat, 14 Aug 2010) | 2 lines This revision incorporates into the 2to3 tool the new, faster, tree matching algorithm developed during a GSOC project. The algorithm resides in the two added modules, btm_matcher and btm_utils. New code has been added to drive the new matching process in refactor.py and a few minor changes were made in other modules. A BM_compatible flag(False by default) has been added in fixer_base and it is set to True in most of the current fixers. ........ r84216 | benjamin.peterson | 2010-08-19 16:44:05 -0500 (Thu, 19 Aug 2010) | 1 line allow star_expr in testlist_gexp ........ r84274 | benjamin.peterson | 2010-08-22 18:40:46 -0500 (Sun, 22 Aug 2010) | 1 line wrap long line ........ r84275 | benjamin.peterson | 2010-08-22 18:42:22 -0500 (Sun, 22 Aug 2010) | 1 line cleanup ........ r84276 | benjamin.peterson | 2010-08-22 18:51:01 -0500 (Sun, 22 Aug 2010) | 1 line when there's a None value and a traceback, don't call type with it #9661 ........ r84375 | george.boutsioukis | 2010-08-31 08:38:53 -0500 (Tue, 31 Aug 2010) | 3 lines Idiomatic code changes & stylistic issues fixed in the BottomMatcher module. Thanks to Benjamin Peterson for taking the time to review the code. ........ r85388 | benjamin.peterson | 2010-10-12 17:27:44 -0500 (Tue, 12 Oct 2010) | 1 line fix urllib fixer with multiple as imports on a line #10069 ........ r85478 | benjamin.peterson | 2010-10-14 08:09:56 -0500 (Thu, 14 Oct 2010) | 1 line stop abusing docstrings ........ r85506 | benjamin.peterson | 2010-10-14 17:45:19 -0500 (Thu, 14 Oct 2010) | 1 line kill sibling import ........ r85507 | benjamin.peterson | 2010-10-14 17:54:15 -0500 (Thu, 14 Oct 2010) | 1 line remove trailing whitespace ........ r85508 | benjamin.peterson | 2010-10-14 17:55:28 -0500 (Thu, 14 Oct 2010) | 1 line typo ........
494 lines
17 KiB
Python
494 lines
17 KiB
Python
# Copyright 2006 Google, Inc. All Rights Reserved.
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# Licensed to PSF under a Contributor Agreement.
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"""Unit tests for pytree.py.
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NOTE: Please *don't* add doc strings to individual test methods!
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In verbose mode, printing of the module, class and method name is much
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more helpful than printing of (the first line of) the docstring,
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especially when debugging a test.
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"""
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from __future__ import with_statement
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import sys
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import warnings
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# Testing imports
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from . import support
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from lib2to3 import pytree
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try:
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sorted
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except NameError:
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def sorted(lst):
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l = list(lst)
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l.sort()
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return l
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class TestNodes(support.TestCase):
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"""Unit tests for nodes (Base, Leaf, Node)."""
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if sys.version_info >= (2,6):
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# warnings.catch_warnings is new in 2.6.
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def test_deprecated_prefix_methods(self):
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l = pytree.Leaf(100, "foo")
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with warnings.catch_warnings(record=True) as w:
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warnings.simplefilter("always", DeprecationWarning)
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self.assertEqual(l.get_prefix(), "")
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l.set_prefix("hi")
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self.assertEqual(l.prefix, "hi")
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self.assertEqual(len(w), 2)
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for warning in w:
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self.assertTrue(warning.category is DeprecationWarning)
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self.assertEqual(str(w[0].message), "get_prefix() is deprecated; " \
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"use the prefix property")
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self.assertEqual(str(w[1].message), "set_prefix() is deprecated; " \
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"use the prefix property")
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def test_instantiate_base(self):
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if __debug__:
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# Test that instantiating Base() raises an AssertionError
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self.assertRaises(AssertionError, pytree.Base)
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def test_leaf(self):
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l1 = pytree.Leaf(100, "foo")
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self.assertEqual(l1.type, 100)
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self.assertEqual(l1.value, "foo")
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def test_leaf_repr(self):
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l1 = pytree.Leaf(100, "foo")
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self.assertEqual(repr(l1), "Leaf(100, 'foo')")
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def test_leaf_str(self):
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l1 = pytree.Leaf(100, "foo")
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self.assertEqual(str(l1), "foo")
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l2 = pytree.Leaf(100, "foo", context=(" ", (10, 1)))
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self.assertEqual(str(l2), " foo")
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def test_leaf_str_numeric_value(self):
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# Make sure that the Leaf's value is stringified. Failing to
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# do this can cause a TypeError in certain situations.
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l1 = pytree.Leaf(2, 5)
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l1.prefix = "foo_"
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self.assertEqual(str(l1), "foo_5")
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def test_leaf_equality(self):
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l1 = pytree.Leaf(100, "foo")
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l2 = pytree.Leaf(100, "foo", context=(" ", (1, 0)))
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self.assertEqual(l1, l2)
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l3 = pytree.Leaf(101, "foo")
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l4 = pytree.Leaf(100, "bar")
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self.assertNotEqual(l1, l3)
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self.assertNotEqual(l1, l4)
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def test_leaf_prefix(self):
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l1 = pytree.Leaf(100, "foo")
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self.assertEqual(l1.prefix, "")
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self.assertFalse(l1.was_changed)
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l1.prefix = " ##\n\n"
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self.assertEqual(l1.prefix, " ##\n\n")
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self.assertTrue(l1.was_changed)
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def test_node(self):
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l1 = pytree.Leaf(100, "foo")
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l2 = pytree.Leaf(200, "bar")
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n1 = pytree.Node(1000, [l1, l2])
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self.assertEqual(n1.type, 1000)
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self.assertEqual(n1.children, [l1, l2])
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def test_node_repr(self):
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l1 = pytree.Leaf(100, "foo")
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l2 = pytree.Leaf(100, "bar", context=(" ", (1, 0)))
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n1 = pytree.Node(1000, [l1, l2])
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self.assertEqual(repr(n1),
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"Node(1000, [%s, %s])" % (repr(l1), repr(l2)))
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def test_node_str(self):
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l1 = pytree.Leaf(100, "foo")
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l2 = pytree.Leaf(100, "bar", context=(" ", (1, 0)))
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n1 = pytree.Node(1000, [l1, l2])
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self.assertEqual(str(n1), "foo bar")
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def test_node_prefix(self):
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l1 = pytree.Leaf(100, "foo")
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self.assertEqual(l1.prefix, "")
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n1 = pytree.Node(1000, [l1])
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self.assertEqual(n1.prefix, "")
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n1.prefix = " "
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self.assertEqual(n1.prefix, " ")
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self.assertEqual(l1.prefix, " ")
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def test_get_suffix(self):
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l1 = pytree.Leaf(100, "foo", prefix="a")
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l2 = pytree.Leaf(100, "bar", prefix="b")
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n1 = pytree.Node(1000, [l1, l2])
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self.assertEqual(l1.get_suffix(), l2.prefix)
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self.assertEqual(l2.get_suffix(), "")
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self.assertEqual(n1.get_suffix(), "")
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l3 = pytree.Leaf(100, "bar", prefix="c")
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n2 = pytree.Node(1000, [n1, l3])
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self.assertEqual(n1.get_suffix(), l3.prefix)
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self.assertEqual(l3.get_suffix(), "")
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self.assertEqual(n2.get_suffix(), "")
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def test_node_equality(self):
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n1 = pytree.Node(1000, ())
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n2 = pytree.Node(1000, [], context=(" ", (1, 0)))
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self.assertEqual(n1, n2)
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n3 = pytree.Node(1001, ())
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self.assertNotEqual(n1, n3)
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def test_node_recursive_equality(self):
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l1 = pytree.Leaf(100, "foo")
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l2 = pytree.Leaf(100, "foo")
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n1 = pytree.Node(1000, [l1])
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n2 = pytree.Node(1000, [l2])
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self.assertEqual(n1, n2)
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l3 = pytree.Leaf(100, "bar")
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n3 = pytree.Node(1000, [l3])
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self.assertNotEqual(n1, n3)
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def test_replace(self):
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l1 = pytree.Leaf(100, "foo")
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l2 = pytree.Leaf(100, "+")
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l3 = pytree.Leaf(100, "bar")
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n1 = pytree.Node(1000, [l1, l2, l3])
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self.assertEqual(n1.children, [l1, l2, l3])
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self.assertTrue(isinstance(n1.children, list))
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self.assertFalse(n1.was_changed)
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l2new = pytree.Leaf(100, "-")
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l2.replace(l2new)
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self.assertEqual(n1.children, [l1, l2new, l3])
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self.assertTrue(isinstance(n1.children, list))
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self.assertTrue(n1.was_changed)
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def test_replace_with_list(self):
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l1 = pytree.Leaf(100, "foo")
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l2 = pytree.Leaf(100, "+")
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l3 = pytree.Leaf(100, "bar")
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n1 = pytree.Node(1000, [l1, l2, l3])
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l2.replace([pytree.Leaf(100, "*"), pytree.Leaf(100, "*")])
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self.assertEqual(str(n1), "foo**bar")
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self.assertTrue(isinstance(n1.children, list))
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def test_leaves(self):
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l1 = pytree.Leaf(100, "foo")
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l2 = pytree.Leaf(100, "bar")
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l3 = pytree.Leaf(100, "fooey")
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n2 = pytree.Node(1000, [l1, l2])
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n3 = pytree.Node(1000, [l3])
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n1 = pytree.Node(1000, [n2, n3])
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self.assertEqual(list(n1.leaves()), [l1, l2, l3])
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def test_depth(self):
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l1 = pytree.Leaf(100, "foo")
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l2 = pytree.Leaf(100, "bar")
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n2 = pytree.Node(1000, [l1, l2])
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n3 = pytree.Node(1000, [])
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n1 = pytree.Node(1000, [n2, n3])
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self.assertEqual(l1.depth(), 2)
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self.assertEqual(n3.depth(), 1)
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self.assertEqual(n1.depth(), 0)
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def test_post_order(self):
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l1 = pytree.Leaf(100, "foo")
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l2 = pytree.Leaf(100, "bar")
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l3 = pytree.Leaf(100, "fooey")
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c1 = pytree.Node(1000, [l1, l2])
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n1 = pytree.Node(1000, [c1, l3])
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self.assertEqual(list(n1.post_order()), [l1, l2, c1, l3, n1])
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def test_pre_order(self):
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l1 = pytree.Leaf(100, "foo")
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l2 = pytree.Leaf(100, "bar")
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l3 = pytree.Leaf(100, "fooey")
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c1 = pytree.Node(1000, [l1, l2])
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n1 = pytree.Node(1000, [c1, l3])
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self.assertEqual(list(n1.pre_order()), [n1, c1, l1, l2, l3])
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def test_changed(self):
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l1 = pytree.Leaf(100, "f")
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self.assertFalse(l1.was_changed)
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l1.changed()
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self.assertTrue(l1.was_changed)
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l1 = pytree.Leaf(100, "f")
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n1 = pytree.Node(1000, [l1])
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self.assertFalse(n1.was_changed)
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n1.changed()
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self.assertTrue(n1.was_changed)
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l1 = pytree.Leaf(100, "foo")
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l2 = pytree.Leaf(100, "+")
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l3 = pytree.Leaf(100, "bar")
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n1 = pytree.Node(1000, [l1, l2, l3])
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n2 = pytree.Node(1000, [n1])
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self.assertFalse(l1.was_changed)
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self.assertFalse(n1.was_changed)
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self.assertFalse(n2.was_changed)
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n1.changed()
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self.assertTrue(n1.was_changed)
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self.assertTrue(n2.was_changed)
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self.assertFalse(l1.was_changed)
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def test_leaf_constructor_prefix(self):
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for prefix in ("xyz_", ""):
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l1 = pytree.Leaf(100, "self", prefix=prefix)
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self.assertTrue(str(l1), prefix + "self")
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self.assertEqual(l1.prefix, prefix)
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def test_node_constructor_prefix(self):
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for prefix in ("xyz_", ""):
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l1 = pytree.Leaf(100, "self")
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l2 = pytree.Leaf(100, "foo", prefix="_")
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n1 = pytree.Node(1000, [l1, l2], prefix=prefix)
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self.assertTrue(str(n1), prefix + "self_foo")
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self.assertEqual(n1.prefix, prefix)
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self.assertEqual(l1.prefix, prefix)
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self.assertEqual(l2.prefix, "_")
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def test_remove(self):
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l1 = pytree.Leaf(100, "foo")
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l2 = pytree.Leaf(100, "foo")
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n1 = pytree.Node(1000, [l1, l2])
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n2 = pytree.Node(1000, [n1])
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self.assertEqual(n1.remove(), 0)
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self.assertEqual(n2.children, [])
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self.assertEqual(l1.parent, n1)
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self.assertEqual(n1.parent, None)
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self.assertEqual(n2.parent, None)
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self.assertFalse(n1.was_changed)
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self.assertTrue(n2.was_changed)
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self.assertEqual(l2.remove(), 1)
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self.assertEqual(l1.remove(), 0)
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self.assertEqual(n1.children, [])
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self.assertEqual(l1.parent, None)
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self.assertEqual(n1.parent, None)
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self.assertEqual(n2.parent, None)
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self.assertTrue(n1.was_changed)
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self.assertTrue(n2.was_changed)
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def test_remove_parentless(self):
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n1 = pytree.Node(1000, [])
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n1.remove()
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self.assertEqual(n1.parent, None)
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l1 = pytree.Leaf(100, "foo")
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l1.remove()
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self.assertEqual(l1.parent, None)
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def test_node_set_child(self):
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l1 = pytree.Leaf(100, "foo")
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n1 = pytree.Node(1000, [l1])
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l2 = pytree.Leaf(100, "bar")
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n1.set_child(0, l2)
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self.assertEqual(l1.parent, None)
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self.assertEqual(l2.parent, n1)
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self.assertEqual(n1.children, [l2])
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n2 = pytree.Node(1000, [l1])
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n2.set_child(0, n1)
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self.assertEqual(l1.parent, None)
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self.assertEqual(n1.parent, n2)
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self.assertEqual(n2.parent, None)
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self.assertEqual(n2.children, [n1])
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self.assertRaises(IndexError, n1.set_child, 4, l2)
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# I don't care what it raises, so long as it's an exception
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self.assertRaises(Exception, n1.set_child, 0, list)
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def test_node_insert_child(self):
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l1 = pytree.Leaf(100, "foo")
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n1 = pytree.Node(1000, [l1])
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l2 = pytree.Leaf(100, "bar")
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n1.insert_child(0, l2)
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self.assertEqual(l2.parent, n1)
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self.assertEqual(n1.children, [l2, l1])
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l3 = pytree.Leaf(100, "abc")
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n1.insert_child(2, l3)
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self.assertEqual(n1.children, [l2, l1, l3])
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# I don't care what it raises, so long as it's an exception
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self.assertRaises(Exception, n1.insert_child, 0, list)
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def test_node_append_child(self):
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n1 = pytree.Node(1000, [])
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l1 = pytree.Leaf(100, "foo")
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n1.append_child(l1)
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self.assertEqual(l1.parent, n1)
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self.assertEqual(n1.children, [l1])
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l2 = pytree.Leaf(100, "bar")
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n1.append_child(l2)
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self.assertEqual(l2.parent, n1)
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self.assertEqual(n1.children, [l1, l2])
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# I don't care what it raises, so long as it's an exception
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self.assertRaises(Exception, n1.append_child, list)
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def test_node_next_sibling(self):
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n1 = pytree.Node(1000, [])
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n2 = pytree.Node(1000, [])
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p1 = pytree.Node(1000, [n1, n2])
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self.assertTrue(n1.next_sibling is n2)
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self.assertEqual(n2.next_sibling, None)
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self.assertEqual(p1.next_sibling, None)
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def test_leaf_next_sibling(self):
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l1 = pytree.Leaf(100, "a")
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l2 = pytree.Leaf(100, "b")
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p1 = pytree.Node(1000, [l1, l2])
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self.assertTrue(l1.next_sibling is l2)
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self.assertEqual(l2.next_sibling, None)
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self.assertEqual(p1.next_sibling, None)
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def test_node_prev_sibling(self):
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n1 = pytree.Node(1000, [])
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n2 = pytree.Node(1000, [])
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p1 = pytree.Node(1000, [n1, n2])
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self.assertTrue(n2.prev_sibling is n1)
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self.assertEqual(n1.prev_sibling, None)
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self.assertEqual(p1.prev_sibling, None)
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def test_leaf_prev_sibling(self):
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l1 = pytree.Leaf(100, "a")
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l2 = pytree.Leaf(100, "b")
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p1 = pytree.Node(1000, [l1, l2])
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self.assertTrue(l2.prev_sibling is l1)
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self.assertEqual(l1.prev_sibling, None)
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self.assertEqual(p1.prev_sibling, None)
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class TestPatterns(support.TestCase):
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"""Unit tests for tree matching patterns."""
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def test_basic_patterns(self):
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# Build a tree
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l1 = pytree.Leaf(100, "foo")
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l2 = pytree.Leaf(100, "bar")
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l3 = pytree.Leaf(100, "foo")
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n1 = pytree.Node(1000, [l1, l2])
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n2 = pytree.Node(1000, [l3])
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root = pytree.Node(1000, [n1, n2])
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# Build a pattern matching a leaf
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pl = pytree.LeafPattern(100, "foo", name="pl")
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r = {}
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self.assertFalse(pl.match(root, results=r))
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self.assertEqual(r, {})
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self.assertFalse(pl.match(n1, results=r))
|
|
self.assertEqual(r, {})
|
|
self.assertFalse(pl.match(n2, results=r))
|
|
self.assertEqual(r, {})
|
|
self.assertTrue(pl.match(l1, results=r))
|
|
self.assertEqual(r, {"pl": l1})
|
|
r = {}
|
|
self.assertFalse(pl.match(l2, results=r))
|
|
self.assertEqual(r, {})
|
|
# Build a pattern matching a node
|
|
pn = pytree.NodePattern(1000, [pl], name="pn")
|
|
self.assertFalse(pn.match(root, results=r))
|
|
self.assertEqual(r, {})
|
|
self.assertFalse(pn.match(n1, results=r))
|
|
self.assertEqual(r, {})
|
|
self.assertTrue(pn.match(n2, results=r))
|
|
self.assertEqual(r, {"pn": n2, "pl": l3})
|
|
r = {}
|
|
self.assertFalse(pn.match(l1, results=r))
|
|
self.assertEqual(r, {})
|
|
self.assertFalse(pn.match(l2, results=r))
|
|
self.assertEqual(r, {})
|
|
|
|
def test_wildcard(self):
|
|
# Build a tree for testing
|
|
l1 = pytree.Leaf(100, "foo")
|
|
l2 = pytree.Leaf(100, "bar")
|
|
l3 = pytree.Leaf(100, "foo")
|
|
n1 = pytree.Node(1000, [l1, l2])
|
|
n2 = pytree.Node(1000, [l3])
|
|
root = pytree.Node(1000, [n1, n2])
|
|
# Build a pattern
|
|
pl = pytree.LeafPattern(100, "foo", name="pl")
|
|
pn = pytree.NodePattern(1000, [pl], name="pn")
|
|
pw = pytree.WildcardPattern([[pn], [pl, pl]], name="pw")
|
|
r = {}
|
|
self.assertFalse(pw.match_seq([root], r))
|
|
self.assertEqual(r, {})
|
|
self.assertFalse(pw.match_seq([n1], r))
|
|
self.assertEqual(r, {})
|
|
self.assertTrue(pw.match_seq([n2], r))
|
|
# These are easier to debug
|
|
self.assertEqual(sorted(r.keys()), ["pl", "pn", "pw"])
|
|
self.assertEqual(r["pl"], l1)
|
|
self.assertEqual(r["pn"], n2)
|
|
self.assertEqual(r["pw"], [n2])
|
|
# But this is equivalent
|
|
self.assertEqual(r, {"pl": l1, "pn": n2, "pw": [n2]})
|
|
r = {}
|
|
self.assertTrue(pw.match_seq([l1, l3], r))
|
|
self.assertEqual(r, {"pl": l3, "pw": [l1, l3]})
|
|
self.assertTrue(r["pl"] is l3)
|
|
r = {}
|
|
|
|
def test_generate_matches(self):
|
|
la = pytree.Leaf(1, "a")
|
|
lb = pytree.Leaf(1, "b")
|
|
lc = pytree.Leaf(1, "c")
|
|
ld = pytree.Leaf(1, "d")
|
|
le = pytree.Leaf(1, "e")
|
|
lf = pytree.Leaf(1, "f")
|
|
leaves = [la, lb, lc, ld, le, lf]
|
|
root = pytree.Node(1000, leaves)
|
|
pa = pytree.LeafPattern(1, "a", "pa")
|
|
pb = pytree.LeafPattern(1, "b", "pb")
|
|
pc = pytree.LeafPattern(1, "c", "pc")
|
|
pd = pytree.LeafPattern(1, "d", "pd")
|
|
pe = pytree.LeafPattern(1, "e", "pe")
|
|
pf = pytree.LeafPattern(1, "f", "pf")
|
|
pw = pytree.WildcardPattern([[pa, pb, pc], [pd, pe],
|
|
[pa, pb], [pc, pd], [pe, pf]],
|
|
min=1, max=4, name="pw")
|
|
self.assertEqual([x[0] for x in pw.generate_matches(leaves)],
|
|
[3, 5, 2, 4, 6])
|
|
pr = pytree.NodePattern(type=1000, content=[pw], name="pr")
|
|
matches = list(pytree.generate_matches([pr], [root]))
|
|
self.assertEqual(len(matches), 1)
|
|
c, r = matches[0]
|
|
self.assertEqual(c, 1)
|
|
self.assertEqual(str(r["pr"]), "abcdef")
|
|
self.assertEqual(r["pw"], [la, lb, lc, ld, le, lf])
|
|
for c in "abcdef":
|
|
self.assertEqual(r["p" + c], pytree.Leaf(1, c))
|
|
|
|
def test_has_key_example(self):
|
|
pattern = pytree.NodePattern(331,
|
|
(pytree.LeafPattern(7),
|
|
pytree.WildcardPattern(name="args"),
|
|
pytree.LeafPattern(8)))
|
|
l1 = pytree.Leaf(7, "(")
|
|
l2 = pytree.Leaf(3, "x")
|
|
l3 = pytree.Leaf(8, ")")
|
|
node = pytree.Node(331, [l1, l2, l3])
|
|
r = {}
|
|
self.assertTrue(pattern.match(node, r))
|
|
self.assertEqual(r["args"], [l2])
|