Allow extension extensions to be case-insensitive.

base/file_path_unittest.cc

 // Copyright (c) 2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/string_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
@@ skipping 616 matching lines @@
     { { FPL("/foo.bar/foo"),        FPL("baz") }, FPL("/foo.bar/foo.baz") },
     { { FPL("/foo.bar/..////"),     FPL("baz") }, FPL("") },
   };
   for (unsigned int i = 0; i < arraysize(cases); ++i) {
     FilePath path(cases[i].inputs[0]);
     FilePath replaced = path.ReplaceExtension(cases[i].inputs[1]);
     EXPECT_EQ(cases[i].expected, replaced.value()) << "i: " << i <<
         ", path: " << path.value() << ", replace: " << cases[i].inputs[1];
   }
 }
+
+TEST_F(FilePathTest, MatchesExtension) {
+  const struct BinaryBooleanTestData cases[] = {
+    { { FPL("foo"),           FPL("") },                    true},
+    { { FPL("foo"),           FPL(".") },                   false},
+    { { FPL("foo."),          FPL("") },                    false},
+    { { FPL("foo."),          FPL(".") },                   true},
+    { { FPL("foo.txt"),       FPL(".dll") },                false},
+    { { FPL("foo.txt"),       FPL(".txt") },                true},
+    { { FPL("foo.txt.dll"),   FPL(".txt") },                false},
+    { { FPL("foo.txt.dll"),   FPL(".dll") },                true},
+#if defined(FILE_PATH_USES_DRIVE_LETTERS)
+    { { FPL("c:/foo.txt.dll"), FPL(".txt") },               false},
+    { { FPL("c:/foo.txt"),    FPL(".txt") },                true},
+#endif  // FILE_PATH_USES_DRIVE_LETTERS
+#if defined(FILE_PATH_USES_WIN_SEPARATORS)
+    { { FPL("c:\\bar\\foo.txt.dll"), FPL(".txt") },         false},
+    { { FPL("c:\\bar\\foo.txt"), FPL(".txt") },             true},
+#endif  // FILE_PATH_USES_DRIVE_LETTERS
+    { { FPL("/bar/foo.txt.dll"), FPL(".txt") },             false},
+    { { FPL("/bar/foo.txt"),  FPL(".txt") },                true},
+  };
+
+  for (size_t i = 0; i < arraysize(cases); ++i) {
+    FilePath path(cases[i].inputs[0]);
+    FilePath::StringType ext(cases[i].inputs[1]);
+
+    EXPECT_EQ(cases[i].expected, path.MatchesExtension(ext)) <<
+        "i: " << i << ", path: " << path.value() << ", ext: " << ext;
+  }
+}