Merged revisions 80934 via svnmerge from

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

................
  r80934 | benjamin.peterson | 2010-05-07 13:58:23 -0500 (Fri, 07 May 2010) | 69 lines

  Merged revisions 79911,79916-79917,80018,80418,80572-80573,80635-80639,80668,80922 via svnmerge from
  svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

  ........
    r79911 | benjamin.peterson | 2010-04-09 15:38:53 -0500 (Fri, 09 Apr 2010) | 1 line

    use absolute import
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    r79916 | benjamin.peterson | 2010-04-09 16:05:21 -0500 (Fri, 09 Apr 2010) | 1 line

    generalize detection of __future__ imports and attach them to the tree
  ........
    r79917 | benjamin.peterson | 2010-04-09 16:11:44 -0500 (Fri, 09 Apr 2010) | 1 line

    don't try to 'fix' relative imports when absolute_import is enabled #8858
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    r80018 | benjamin.peterson | 2010-04-12 16:12:12 -0500 (Mon, 12 Apr 2010) | 4 lines

    prevent diffs from being mangled is multiprocess mode #6409

    Patch by George Boutsioukis.
  ........
    r80418 | benjamin.peterson | 2010-04-23 16:00:03 -0500 (Fri, 23 Apr 2010) | 1 line

    remove unhelpful description
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    r80572 | benjamin.peterson | 2010-04-27 20:33:54 -0500 (Tue, 27 Apr 2010) | 1 line

    use unicode literals
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    r80573 | jeffrey.yasskin | 2010-04-27 23:08:27 -0500 (Tue, 27 Apr 2010) | 6 lines

    Don't transform imports that are already relative.  2to3 turned
      from . import refactor
    into
      from .. import refactor
    which broke the transformation of 2to3 itself.
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    r80635 | benjamin.peterson | 2010-04-29 16:02:23 -0500 (Thu, 29 Apr 2010) | 1 line

    remove imports
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    r80636 | benjamin.peterson | 2010-04-29 16:02:41 -0500 (Thu, 29 Apr 2010) | 1 line

    unicode literal
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    r80637 | benjamin.peterson | 2010-04-29 16:03:42 -0500 (Thu, 29 Apr 2010) | 1 line

    must pass a string to Number
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    r80638 | benjamin.peterson | 2010-04-29 16:05:34 -0500 (Thu, 29 Apr 2010) | 1 line

    unicode literals
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    r80639 | benjamin.peterson | 2010-04-29 16:06:09 -0500 (Thu, 29 Apr 2010) | 1 line

    pass string to Number
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    r80668 | jeffrey.yasskin | 2010-04-30 18:02:47 -0500 (Fri, 30 Apr 2010) | 4 lines

    Make 2to3 run under Python 2.5 so that the benchmark suite at
    http://hg.python.org/benchmarks/ can use it and still run on implementations
    that haven't gotten to 2.6 yet.  Fixes issue 8566.
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    r80922 | benjamin.peterson | 2010-05-07 11:06:25 -0500 (Fri, 07 May 2010) | 1 line

    prevent xrange transformation from wrapping range calls it produces in list
  ........
................

1 files changed, 45 insertions, 35 deletions

diff --git a/Lib/lib2to3/tests/test_refactor.py b/Lib/lib2to3/tests/test_refactor.py
index 49fb0c0..35efe25 100644
--- a/Lib/lib2to3/tests/test_refactor.py
+++ b/Lib/lib2to3/tests/test_refactor.py
@@ -2,6 +2,8 @@
 Unit tests for refactor.py.
 """
 
+from __future__ import with_statement
+
 import sys
 import os
 import codecs
@@ -61,42 +63,50 @@ class TestRefactoringTool(unittest.TestCase):
         self.assertEqual(full_names,
                          ["myfixes.fix_" + name for name in contents])
 
-    def test_detect_future_print(self):
-        run = refactor._detect_future_print
-        self.assertFalse(run(""))
-        self.assertTrue(run("from __future__ import print_function"))
-        self.assertFalse(run("from __future__ import generators"))
-        self.assertFalse(run("from __future__ import generators, feature"))
-        input = "from __future__ import generators, print_function"
-        self.assertTrue(run(input))
-        input ="from __future__ import print_function, generators"
-        self.assertTrue(run(input))
-        input = "from __future__ import (print_function,)"
-        self.assertTrue(run(input))
-        input = "from __future__ import (generators, print_function)"
-        self.assertTrue(run(input))
-        input = "from __future__ import (generators, nested_scopes)"
-        self.assertFalse(run(input))
-        input = """from __future__ import generators
+    def test_detect_future_features(self):
+        run = refactor._detect_future_features
+        fs = frozenset
+        empty = fs()
+        self.assertEqual(run(""), empty)
+        self.assertEqual(run("from __future__ import print_function"),
+                         fs(("print_function",)))
+        self.assertEqual(run("from __future__ import generators"),
+                         fs(("generators",)))
+        self.assertEqual(run("from __future__ import generators, feature"),
+                         fs(("generators", "feature")))
+        inp = "from __future__ import generators, print_function"
+        self.assertEqual(run(inp), fs(("generators", "print_function")))
+        inp ="from __future__ import print_function, generators"
+        self.assertEqual(run(inp), fs(("print_function", "generators")))
+        inp = "from __future__ import (print_function,)"
+        self.assertEqual(run(inp), fs(("print_function",)))
+        inp = "from __future__ import (generators, print_function)"
+        self.assertEqual(run(inp), fs(("generators", "print_function")))
+        inp = "from __future__ import (generators, nested_scopes)"
+        self.assertEqual(run(inp), fs(("generators", "nested_scopes")))
+        inp = """from __future__ import generators
 from __future__ import print_function"""
-        self.assertTrue(run(input))
-        self.assertFalse(run("from"))
-        self.assertFalse(run("from 4"))
-        self.assertFalse(run("from x"))
-        self.assertFalse(run("from x 5"))
-        self.assertFalse(run("from x im"))
-        self.assertFalse(run("from x import"))
-        self.assertFalse(run("from x import 4"))
-        input = "'docstring'\nfrom __future__ import print_function"
-        self.assertTrue(run(input))
-        input = "'docstring'\n'somng'\nfrom __future__ import print_function"
-        self.assertFalse(run(input))
-        input = "# comment\nfrom __future__ import print_function"
-        self.assertTrue(run(input))
-        input = "# comment\n'doc'\nfrom __future__ import print_function"
-        self.assertTrue(run(input))
-        input = "class x: pass\nfrom __future__ import print_function"
-        self.assertFalse(run(input))
+        self.assertEqual(run(inp), fs(("generators", "print_function")))
+        invalid = ("from",
+                   "from 4",
+                   "from x",
+                   "from x 5",
+                   "from x im",
+                   "from x import",
+                   "from x import 4",
+                   )
+        for inp in invalid:
+            self.assertEqual(run(inp), empty)
+        inp = "'docstring'\nfrom __future__ import print_function"
+        self.assertEqual(run(inp), fs(("print_function",)))
+        inp = "'docstring'\n'somng'\nfrom __future__ import print_function"
+        self.assertEqual(run(inp), empty)
+        inp = "# comment\nfrom __future__ import print_function"
+        self.assertEqual(run(inp), fs(("print_function",)))
+        inp = "# comment\n'doc'\nfrom __future__ import print_function"
+        self.assertEqual(run(inp), fs(("print_function",)))
+        inp = "class x: pass\nfrom __future__ import print_function"
+        self.assertEqual(run(inp), empty)
 
     def test_get_headnode_dict(self):
         class NoneFix(fixer_base.BaseFix):