chrome/browser/user_style_sheet_watcher_unittest.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/user_style_sheet_watcher.h"
   6
   7 #include "base/base64.h"
   8 #include "base/basictypes.h"
   9 #include "base/file_util.h"
  10 #include "base/files/scoped_temp_dir.h"
  11 #include "base/message_loop/message_loop.h"
  12 #include "base/strings/string_util.h"
  13 #include "base/threading/thread.h"
  14 #include "chrome/test/base/testing_browser_process.h"
  15 #include "content/public/test/test_browser_thread.h"
  16 #include "testing/gtest/include/gtest/gtest.h"
  17
  18 using content::BrowserThread;
  19
  20 TEST(UserStyleSheetWatcherTest, StyleLoad) {
  21   base::ScopedTempDir dir;
  22   ASSERT_TRUE(dir.CreateUniqueTempDir());
  23
  24   std::string css_file_contents = "a { color: green; }";
  25   base::FilePath style_sheet_file = dir.path().AppendASCII("User StyleSheets")
  26                               .AppendASCII("Custom.css");
  27   file_util::CreateDirectory(style_sheet_file.DirName());
  28   ASSERT_TRUE(file_util::WriteFile(style_sheet_file,
  29               css_file_contents.data(), css_file_contents.length()));
  30
  31   base::MessageLoop loop(base::MessageLoop::TYPE_UI);
  32   base::Thread io_thread("UserStyleSheetWatcherTestIOThread");
  33   base::Thread::Options options(base::MessageLoop::TYPE_IO, 0);
  34   ASSERT_TRUE(io_thread.StartWithOptions(options));
  35   content::TestBrowserThread browser_ui_thread(BrowserThread::UI, &loop);
  36   content::TestBrowserThread browser_file_thread(BrowserThread::FILE,
  37                                                  io_thread.message_loop());
  38
  39   // It is important that the creation of |style_sheet_watcher| occur after the
  40   // creation of |browser_ui_thread| because UserStyleSheetWatchers are
  41   // restricted to being deleted only on UI browser threads.
  42   scoped_refptr<UserStyleSheetWatcher> style_sheet_watcher(
  43       new UserStyleSheetWatcher(NULL, dir.path()));
  44   style_sheet_watcher->Init();
  45
  46   io_thread.Stop();
  47   loop.RunUntilIdle();
  48
  49   GURL result_url = style_sheet_watcher->user_style_sheet();
  50   std::string result = result_url.spec();
  51   std::string prefix = "data:text/css;charset=utf-8;base64,";
  52   ASSERT_TRUE(StartsWithASCII(result, prefix, true));
  53   result = result.substr(prefix.length());
  54   std::string decoded;
  55   ASSERT_TRUE(base::Base64Decode(result, &decoded));
  56   ASSERT_EQ(css_file_contents, decoded);
  57 }