[cros mp] Load profiles from /home/chronos/u-[$hash], add GetUserIdHashFromProfile()

chrome/browser/chromeos/profiles/profile_helper_browsertest.cc

+// Copyright (c) 2013 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 <string>
+
+#include "base/files/file_path.h"
+#include "chrome/browser/chromeos/profiles/profile_helper.h"
+#include "chrome/test/base/in_process_browser_test.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace chromeos {
+
+namespace {
+static const char kActiveUserHash[] = "01234567890";
+} // namespace
+
+class ProfileHelperTest : public InProcessBrowserTest {
+ public:
+  ProfileHelperTest() {
+  }
+
+ protected:
+  void ActiveUserChanged(ProfileHelper* profile_helper,
+                         const std::string& hash) {
+    profile_helper->ActiveUserHashChanged(hash);
+  }
+};
+
+IN_PROC_BROWSER_TEST_F(ProfileHelperTest, ActiveUserProfileDir) {
+  ProfileHelper profile_helper;
+  ActiveUserChanged(&profile_helper, kActiveUserHash);
+  base::FilePath profile_dir = profile_helper.GetActiveUserProfileDir();
+  std::string expected_dir;
+  expected_dir.append(ProfileHelper::kProfileDirPrefix);
+  expected_dir.append(kActiveUserHash);
+  EXPECT_EQ(expected_dir, profile_dir.BaseName().value());
+}
+
+}  // namespace chromeos