bpo-30415: Add new tests for the fnmatch module. (#1684)

Lib/test/test_fnmatch.py

 """Test cases for the fnmatch module."""
 
 import unittest
+import os
 
 from fnmatch import fnmatch, fnmatchcase, translate, filter
 
 class FnmatchTestCase(unittest.TestCase):
 
-    def check_match(self, filename, pattern, should_match=1, fn=fnmatch):
+    def check_match(self, filename, pattern, should_match=True, fn=fnmatch):
         if should_match:
             self.assertTrue(fn(filename, pattern),
                          "expected %r to match pattern %r"
                          % (filename, pattern))
         else:
-            self.assertTrue(not fn(filename, pattern),
+            self.assertFalse(fn(filename, pattern),
                          "expected %r not to match pattern %r"
                          % (filename, pattern))
 
@@ -26,15 +27,15 @@ class FnmatchTestCase(unittest.TestCase):
         check('abc', '*')
         check('abc', 'ab[cd]')
         check('abc', 'ab[!de]')
-        check('abc', 'ab[de]', 0)
-        check('a', '??', 0)
-        check('a', 'b', 0)
+        check('abc', 'ab[de]', False)
+        check('a', '??', False)
+        check('a', 'b', False)
 
         # these test that '\' is handled correctly in character sets;
         # see SF bug #409651
         check('\\', r'[\]')
         check('a', r'[!\]')
-        check('\\', r'[!\]', 0)
+        check('\\', r'[!\]', False)
 
         # test that filenames with newlines in them are handled correctly.
         # http://bugs.python.org/issue6665
@@ -51,14 +52,38 @@ class FnmatchTestCase(unittest.TestCase):
 
     def test_fnmatchcase(self):
         check = self.check_match
-        check('AbC', 'abc', 0, fnmatchcase)
-        check('abc', 'AbC', 0, fnmatchcase)
+        check('abc', 'abc', True, fnmatchcase)
+        check('AbC', 'abc', False, fnmatchcase)
+        check('abc', 'AbC', False, fnmatchcase)
+        check('AbC', 'AbC', True, fnmatchcase)
+
+        check('usr/bin', 'usr/bin', True, fnmatchcase)
+        check('usr\\bin', 'usr/bin', False, fnmatchcase)
+        check('usr/bin', 'usr\\bin', False, fnmatchcase)
+        check('usr\\bin', 'usr\\bin', True, fnmatchcase)
 
     def test_bytes(self):
         self.check_match(b'test', b'te*')
         self.check_match(b'test\xff', b'te*\xff')
         self.check_match(b'foo\nbar', b'foo*')
 
+    def test_case(self):
+        ignorecase = os.path.normcase('ABC') == os.path.normcase('abc')
+        check = self.check_match
+        check('abc', 'abc')
+        check('AbC', 'abc', ignorecase)
+        check('abc', 'AbC', ignorecase)
+        check('AbC', 'AbC')
+
+    def test_sep(self):
+        normsep = os.path.normcase('\\') == os.path.normcase('/')
+        check = self.check_match
+        check('usr/bin', 'usr/bin')
+        check('usr\\bin', 'usr/bin', normsep)
+        check('usr/bin', 'usr\\bin', normsep)
+        check('usr\\bin', 'usr\\bin')
+
+
 class TranslateTestCase(unittest.TestCase):
 
     def test_translate(self):
@@ -75,7 +100,28 @@ class TranslateTestCase(unittest.TestCase):
 class FilterTestCase(unittest.TestCase):
 
     def test_filter(self):
-        self.assertEqual(filter(['a', 'b'], 'a'), ['a'])
+        self.assertEqual(filter(['Python', 'Ruby', 'Perl', 'Tcl'], 'P*'),
+                         ['Python', 'Perl'])
+        self.assertEqual(filter([b'Python', b'Ruby', b'Perl', b'Tcl'], b'P*'),
+                         [b'Python', b'Perl'])
+
+    def test_mix_bytes_str(self):
+        self.assertRaises(TypeError, filter, ['test'], b'*')
+        self.assertRaises(TypeError, filter, [b'test'], '*')
+
+    def test_case(self):
+        ignorecase = os.path.normcase('P') == os.path.normcase('p')
+        self.assertEqual(filter(['Test.py', 'Test.rb', 'Test.PL'], '*.p*'),
+                         ['Test.py', 'Test.PL'] if ignorecase else ['Test.py'])
+        self.assertEqual(filter(['Test.py', 'Test.rb', 'Test.PL'], '*.P*'),
+                         ['Test.py', 'Test.PL'] if ignorecase else ['Test.PL'])
+
+    def test_sep(self):
+        normsep = os.path.normcase('\\') == os.path.normcase('/')
+        self.assertEqual(filter(['usr/bin', 'usr', 'usr\\lib'], 'usr/*'),
+                         ['usr/bin', 'usr\\lib'] if normsep else ['usr/bin'])
+        self.assertEqual(filter(['usr/bin', 'usr', 'usr\\lib'], 'usr\\*'),
+                         ['usr/bin', 'usr\\lib'] if normsep else ['usr\\lib'])
 
 
 if __name__ == "__main__":