chrome/browser/guest_view/guest_view_manager_unittest.cc

// Copyright 2014 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/guest_view/guest_view_manager.h"

#include "chrome/test/base/testing_profile.h"
#include "content/public/test/test_browser_thread_bundle.h"
#include "content/public/test/web_contents_tester.h"
#include "testing/gtest/include/gtest/gtest.h"

using content::WebContents;
using content::WebContentsTester;

namespace guestview {

// This class allows us to access some private variables in
// GuestViewManager.
class TestGuestViewManager : public GuestViewManager {
 public:
  explicit TestGuestViewManager(content::BrowserContext* context)
      : GuestViewManager(context) {}

  int last_instance_id_removed_for_testing() {
    return last_instance_id_removed_;
  }

  size_t GetRemovedInstanceIdSize() { return removed_instance_ids_.size(); }

 private:
  using GuestViewManager::last_instance_id_removed_;
  using GuestViewManager::removed_instance_ids_;

  DISALLOW_COPY_AND_ASSIGN(TestGuestViewManager);
};

} // namespace guestview

namespace {

class GuestViewManagerTest : public testing::Test {
 public:
  GuestViewManagerTest() {}
  virtual ~GuestViewManagerTest() {}

  scoped_ptr<WebContents> CreateWebContents() {
    return scoped_ptr<WebContents>(
        WebContentsTester::CreateTestWebContents(&profile_, NULL));
  }

 private:
  content::TestBrowserThreadBundle thread_bundle_;
  TestingProfile profile_;

  DISALLOW_COPY_AND_ASSIGN(GuestViewManagerTest);
};

}  // namespace

TEST_F(GuestViewManagerTest, AddRemove) {
  TestingProfile profile;
  scoped_ptr<guestview::TestGuestViewManager> manager(
      new guestview::TestGuestViewManager(&profile));

  scoped_ptr<WebContents> web_contents1(CreateWebContents());
  scoped_ptr<WebContents> web_contents2(CreateWebContents());
  scoped_ptr<WebContents> web_contents3(CreateWebContents());

  EXPECT_EQ(0, manager->last_instance_id_removed_for_testing());

  EXPECT_TRUE(manager->CanUseGuestInstanceID(1));
  EXPECT_TRUE(manager->CanUseGuestInstanceID(2));
  EXPECT_TRUE(manager->CanUseGuestInstanceID(3));

  manager->AddGuest(1, web_contents1.get());
  manager->AddGuest(2, web_contents2.get());
  manager->RemoveGuest(2);

  // Since we removed 2, it would be an invalid ID.
  EXPECT_TRUE(manager->CanUseGuestInstanceID(1));
  EXPECT_FALSE(manager->CanUseGuestInstanceID(2));
  EXPECT_TRUE(manager->CanUseGuestInstanceID(3));

  EXPECT_EQ(0, manager->last_instance_id_removed_for_testing());

  EXPECT_TRUE(manager->CanUseGuestInstanceID(3));

  manager->AddGuest(3, web_contents3.get());
  manager->RemoveGuest(1);
  EXPECT_FALSE(manager->CanUseGuestInstanceID(1));
  EXPECT_FALSE(manager->CanUseGuestInstanceID(2));

  EXPECT_EQ(2, manager->last_instance_id_removed_for_testing());
  manager->RemoveGuest(3);
  EXPECT_EQ(3, manager->last_instance_id_removed_for_testing());

  EXPECT_FALSE(manager->CanUseGuestInstanceID(1));
  EXPECT_FALSE(manager->CanUseGuestInstanceID(2));
  EXPECT_FALSE(manager->CanUseGuestInstanceID(3));

  EXPECT_EQ(0u, manager->GetRemovedInstanceIdSize());
}