Implement file_util::CountFilesCreatedAfter() for posix environments....

base/file_util_unittest.cc

 // Copyright (c) 2006-2008 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 "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shellapi.h>
 #include <shlobj.h>
@@ skipping 295 matching lines @@
 
 TEST_F(FileUtilTest, GetDirectoryFromPath) {
   for (unsigned int i = 0; i < arraysize(dir_cases); ++i) {
     const dir_case& dir = dir_cases[i];
     const std::wstring parent =
         file_util::GetDirectoryFromPath(dir.full_path);
     EXPECT_EQ(dir.directory, parent);
   }
 }
 
-// TODO(erikkay): implement
-#if defined OS_WIN
 TEST_F(FileUtilTest, CountFilesCreatedAfter) {
   // Create old file (that we don't want to count)
   FilePath old_file_name = test_dir_.Append(FILE_PATH_LITERAL("Old File.txt"));
   CreateTextFile(old_file_name, L"Just call me Mr. Creakybits");
 
   // Age to perfection
+#if defined(OS_WIN)
   Sleep(100);
+#elif defined(OS_POSIX)
+  // We need to wait at least one second here because the precision of
+  // file creation time is one second.
+  sleep(1);

[Erik does not do reviews, 2009/04/21 16:10:21]

nit: for new code, it's probably better to use PlatformThread::Sleep, even
though this is POSIX specific.

+#endif
 
   // Establish our cutoff time
   base::Time now(base::Time::NowFromSystemTime());
   EXPECT_EQ(0, file_util::CountFilesCreatedAfter(test_dir_, now));
 
   // Create a new file (that we do want to count)
   FilePath new_file_name = test_dir_.Append(FILE_PATH_LITERAL("New File.txt"));
   CreateTextFile(new_file_name, L"Waaaaaaaaaaaaaah.");
 
   // We should see only the new file.
   EXPECT_EQ(1, file_util::CountFilesCreatedAfter(test_dir_, now));
 
   // Delete new file, we should see no files after cutoff now
   EXPECT_TRUE(file_util::Delete(new_file_name, false));
   EXPECT_EQ(0, file_util::CountFilesCreatedAfter(test_dir_, now));
 }
-#endif
 
 // Tests that the Delete function works as expected, especially
 // the recursion flag.  Also coincidentally tests PathExists.
 TEST_F(FileUtilTest, Delete) {
   // Create a file
   FilePath file_name = test_dir_.Append(FILE_PATH_LITERAL("Test File.txt"));
   CreateTextFile(file_name, L"I'm cannon fodder.");
 
   ASSERT_TRUE(file_util::PathExists(file_name));
 
@@ skipping 731 matching lines @@
 #elif defined(OS_LINUX)
   EXPECT_FALSE(file_util::ContainsPath(foo,
       foo_caps.Append(FILE_PATH_LITERAL("bar.txt"))));
 #else
   // We can't really do this test on osx since the case-sensitivity of the
   // filesystem is configurable.
 #endif
 }
 
 }  // namespace