// Copyright (c) 2011 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 "chrome/browser/dom_ui/dom_ui_browsertest.h"

#include "base/path_service.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/url_constants.h"
#include "chrome/test/ui_test_utils.h"
#include "ui/base/resource/resource_bundle.h"

static const FilePath::CharType* kDOMUILibraryJS =
    FILE_PATH_LITERAL("test_api.js");
static const FilePath::CharType* kDOMUITestFolder =
    FILE_PATH_LITERAL("dom_ui");

bool DOMUITest::RunDOMUITest(const FilePath::CharType* src_path) {
  std::string content;
  BuildJavaScriptTest(FilePath(src_path), &content);
  SetupHandlers();
  return test_handler_->Execute(content);
}

DOMUITest::DOMUITest() : test_handler_(new DOMUITestHandler()) {}

void DOMUITest::SetUpInProcessBrowserTestFixture() {
  ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &test_data_directory_));
  test_data_directory_ = test_data_directory_.Append(kDOMUITestFolder);

  // TODO(dtseng): should this be part of every BrowserTest or just DOMUI test.
  FilePath resources_pack_path;
  PathService::Get(chrome::FILE_RESOURCES_PACK, &resources_pack_path);
  ResourceBundle::AddDataPackToSharedInstance(resources_pack_path);
}

void DOMUITest::BuildJavaScriptTest(const FilePath& src_path,
                                    std::string* content) {
  ASSERT_TRUE(content != NULL);
  std::string library_content, src_content;
  ASSERT_TRUE(file_util::ReadFileToString(
      test_data_directory_.Append(FilePath(kDOMUILibraryJS)),
          &library_content));
  ASSERT_TRUE(file_util::ReadFileToString(
      test_data_directory_.Append(src_path), &src_content));

  content->append(library_content);
  content->append(";\n");
  content->append(src_content);
}

void DOMUITest::SetupHandlers() {
  DOMUI* dom_ui_instance =
      browser()->GetSelectedTabContents()->dom_ui();
  ASSERT_TRUE(dom_ui_instance != NULL);
  dom_ui_instance->register_callback_overwrites(true);
  test_handler_->Attach(dom_ui_instance);

  if (GetMockMessageHandler())
    GetMockMessageHandler()->Attach(dom_ui_instance);
}

IN_PROC_BROWSER_TEST_F(DOMUITest, TestSamplePass) {
  // Navigate to UI.
  // TODO(dtseng): make accessor for subclasses to return?
  ui_test_utils::NavigateToURL(browser(), GURL(chrome::kChromeUIDownloadsURL));

  ASSERT_TRUE(RunDOMUITest(FILE_PATH_LITERAL("sample_downloads.js")));
}