Connect BackgroundFetch to the OfflineItemCollection

chrome/browser/background_fetch/background_fetch_client_impl_unittest.cc

+// Copyright 2017 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/background_fetch/background_fetch_client_impl.h"
+
+#include "base/macros.h"
+#include "base/threading/thread_task_runner_handle.h"
+#include "chrome/browser/background_fetch/background_fetch_client_factory.h"
+#include "chrome/test/base/testing_profile.h"
+#include "components/offline_items_collection/core/offline_item.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+const char kRegistrationId[] = "1234:www.example.com:game_data";
+const char kNamespace[] = "BackgroundFetchNamespace";
+
+class FakeBackgroundFetchDelegate
+    : public content::BackgroundFetchClient::Delegate {
+ public:
+  explicit FakeBackgroundFetchDelegate(const std::string& id)
+      : expected_id_(id) {}
+
+  void CancelDownload(const std::string& registration_id) override {
+    ASSERT_EQ(registration_id, expected_id_);
+  }
+
+  void PauseDownload(const std::string& registration_id) override {
+    ASSERT_EQ(registration_id, expected_id_);
+  }
+
+  void ResumeDownload(const std::string& registration_id) override {
+    ASSERT_EQ(registration_id, expected_id_);
+  }
+
+ private:
+  std::string expected_id_;
+};
+
+class BackgroundFetchTestingProfile : public TestingProfile {
+ public:
+  BackgroundFetchTestingProfile() {}
+  ~BackgroundFetchTestingProfile() override {}
+
+  BackgroundFetchClientImpl* GetBackgroundFetchClient() override {
+    return BackgroundFetchClientFactory::GetForProfile(this);

[Peter Beverloo, 2017/03/31 11:54:06]

What do you think about just calling the factory in
TestingProfile::GetBackgroundFetchClient? It's a one-liner, calling it doesn't
cause significant work (and is only done when necessary anyway) and it allows
you to remove this derived class.

[harkness, 2017/04/03 12:47:22]

Done.

+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(BackgroundFetchTestingProfile);
+};
+
+}  // namespace
+
+class BackgroundFetchClientTest : public ::testing::Test {
+ public:
+  BackgroundFetchClientTest() {}
+  ~BackgroundFetchClientTest() override {}
+
+ private:
+  content::TestBrowserThreadBundle thread_bundle_;
+
+ protected:
+  BackgroundFetchTestingProfile profile_;

[Peter Beverloo, 2017/03/31 11:54:06]

style: Protected before private. Just make both protected.

[harkness, 2017/04/03 12:47:22]

Done.

+};
+
+TEST_F(BackgroundFetchClientTest, CancelDownloadTest) {
+  BackgroundFetchClientImpl* client = profile_.GetBackgroundFetchClient();
+  FakeBackgroundFetchDelegate delegate(kRegistrationId);
+  client->SetDelegate(&delegate);
+
+  offline_items_collection::ContentId id(kNamespace, kRegistrationId);
+  ASSERT_NO_FATAL_FAILURE(client->CancelDownload(id));
+
+  client->SetDelegate(nullptr);
+  ASSERT_NO_FATAL_FAILURE(client->CancelDownload(id));
+}
+
+TEST_F(BackgroundFetchClientTest, PauseDownloadTest) {
+  BackgroundFetchClientImpl* client = profile_.GetBackgroundFetchClient();
+  FakeBackgroundFetchDelegate delegate(kRegistrationId);
+  client->SetDelegate(&delegate);
+
+  offline_items_collection::ContentId id(kNamespace, kRegistrationId);
+  ASSERT_NO_FATAL_FAILURE(client->PauseDownload(id));
+
+  client->SetDelegate(nullptr);
+  ASSERT_NO_FATAL_FAILURE(client->PauseDownload(id));
+}
+
+TEST_F(BackgroundFetchClientTest, ResumeDownloadTest) {
+  BackgroundFetchClientImpl* client = profile_.GetBackgroundFetchClient();
+  FakeBackgroundFetchDelegate delegate(kRegistrationId);
+  client->SetDelegate(&delegate);
+
+  offline_items_collection::ContentId id(kNamespace, kRegistrationId);
+  ASSERT_NO_FATAL_FAILURE(client->ResumeDownload(id));
+
+  client->SetDelegate(nullptr);
+  ASSERT_NO_FATAL_FAILURE(client->ResumeDownload(id));
+}