Moving away from shell api to support long path names on windows for filesystem.

base/file_path_unittest.cc

 // Copyright (c) 2010 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/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
@@ skipping 1069 matching lines @@
     { FPL("/\\foo\\/bar"), FPL("\\\\foo\\\\bar") },
   };
   for (size_t i = 0; i < arraysize(cases); ++i) {
     FilePath input(cases[i].input);
     FilePath observed = input.NormalizeWindowsPathSeparators();
     EXPECT_EQ(FilePath::StringType(cases[i].expected), observed.value()) <<
               "i: " << i << ", input: " << input.value();
   }
 }
 #endif
+
+#if defined(OS_WIN)
+TEST_F(FilePathTest, TestStartsWithExtendedPathPrefix) {
+  FilePath::StringType prefix_str(FilePath::kExtendedPathPrefix);
+  FilePath with_extended_path_prefix(prefix_str);
+  EXPECT_TRUE(with_extended_path_prefix.StartsWithExtendedPathPrefix());
+  FilePath longer_with_extended_path_prefix(
+      prefix_str.append(FPL("/\\foo\\/bar")));
+  EXPECT_TRUE(longer_with_extended_path_prefix.StartsWithExtendedPathPrefix());
+  FilePath without_extended_path_prefix(FPL("/\\foo\\/bar"));
+  EXPECT_FALSE(without_extended_path_prefix.StartsWithExtendedPathPrefix());
+}
+#endif