// Copyright 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 "chrome/browser/extensions/browsertest_util.h"

#include "chrome/browser/extensions/extension_host.h"
#include "chrome/browser/extensions/extension_process_manager.h"
#include "chrome/browser/extensions/extension_system.h"
#include "content/public/test/browser_test_utils.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace extensions {
namespace browsertest_util {

std::string ExecuteScriptInBackgroundPage(Profile* profile,
                                          const std::string& extension_id,
                                          const std::string& script) {
  ExtensionProcessManager* manager =
      extensions::ExtensionSystem::Get(profile)->process_manager();
  extensions::ExtensionHost* host =
      manager->GetBackgroundHostForExtension(extension_id);
  if (host == NULL) {
    ADD_FAILURE() << "Extension " << extension_id << " has no background page.";
    return "";
  }
  std::string result;
  if (!content::ExecuteScriptAndExtractString(
           host->host_contents(), script, &result)) {
    ADD_FAILURE() << "Executing script failed: " << script;
    result.clear();
  }
  return result;
}

}  // namespace browsertest_util
}  // namespace extensions