[Offline pages] Updating RequestQueue::RemoveRequests to use a TaskQueue

components/offline_pages/background/remove_requests_task_unittest.cc

+// Copyright 2016 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 "components/offline_pages/background/remove_requests_task.h"
+
+#include <memory>
+
+#include "base/bind.h"
+#include "base/test/test_simple_task_runner.h"
+#include "base/threading/thread_task_runner_handle.h"
+#include "components/offline_pages/background/request_queue_in_memory_store.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace offline_pages {
+namespace {
+const int64_t kRequestId1 = 42;
+const int64_t kRequestId2 = 43;
+const GURL kUrl1("http://example.com");
+const ClientId kClientId1("bookmark", "1234");
+}  // namespace
+
+class RemoveRequestsTaskTest : public testing::Test {
+ public:
+  RemoveRequestsTaskTest();
+  ~RemoveRequestsTaskTest() override;
+
+  void PumpLoop();
+
+  void SetUpStore(RequestQueueStore* store);
+
+  void AddRequestDone(ItemActionStatus status);
+
+  void RemoveRequestsCallback(std::unique_ptr<UpdateRequestsResult> result);
+
+  UpdateRequestsResult* last_result() const { return result_.get(); }
+
+ private:
+  std::unique_ptr<UpdateRequestsResult> result_;
+  scoped_refptr<base::TestSimpleTaskRunner> task_runner_;
+  base::ThreadTaskRunnerHandle task_runner_handle_;
+};
+
+RemoveRequestsTaskTest::RemoveRequestsTaskTest()
+    : task_runner_(new base::TestSimpleTaskRunner),
+      task_runner_handle_(task_runner_) {}
+
+RemoveRequestsTaskTest::~RemoveRequestsTaskTest() {}
+
+void RemoveRequestsTaskTest::PumpLoop() {
+  task_runner_->RunUntilIdle();
+}
+
+void RemoveRequestsTaskTest::SetUpStore(RequestQueueStore* store) {

[Pete Williamson, 2016/09/30 18:03:53]

A better name might be "AddARequestToStore".  This method doesn't really set up
the store, the constructor did that.  This just fills the store with the first
request.

[fgorski, 2016/10/04 17:18:23]

Done.

+  base::Time creation_time = base::Time::Now();
+  SavePageRequest original_request(kRequestId1, kUrl1, kClientId1,
+                                   creation_time, true);
+  store->AddRequest(original_request,
+                    base::Bind(&RemoveRequestsTaskTest::AddRequestDone,
+                               base::Unretained(this)));
+  PumpLoop();
+}
+
+void RemoveRequestsTaskTest::AddRequestDone(ItemActionStatus status) {
+  ASSERT_EQ(ItemActionStatus::SUCCESS, status);
+}
+
+void RemoveRequestsTaskTest::RemoveRequestsCallback(
+    std::unique_ptr<UpdateRequestsResult> result) {
+  result_ = std::move(result);
+}
+
+TEST_F(RemoveRequestsTaskTest, RemoveWhenStoreEmpty) {
+  RequestQueueInMemoryStore store;
+  std::vector<int64_t> request_ids{kRequestId1};
+  RemoveRequestsTask task(
+      &store, request_ids,
+      base::Bind(&RemoveRequestsTaskTest::RemoveRequestsCallback,
+                 base::Unretained(this)));
+  task.Run();
+  PumpLoop();
+  ASSERT_TRUE(last_result());
+  EXPECT_EQ(1UL, last_result()->item_statuses.size());
+  EXPECT_EQ(kRequestId1, last_result()->item_statuses.at(0).first);
+  EXPECT_EQ(ItemActionStatus::NOT_FOUND,
+            last_result()->item_statuses.at(0).second);
+  EXPECT_EQ(0UL, last_result()->updated_items.size());
+}
+
+TEST_F(RemoveRequestsTaskTest, RemoveSingleItem) {

[Pete Williamson, 2016/09/30 18:03:53]

Maybe add a test for removing multiple items.

[fgorski, 2016/10/04 17:18:23]

Done.

+  RequestQueueInMemoryStore store;
+  SetUpStore(&store);
+  std::vector<int64_t> request_ids{kRequestId1};
+  RemoveRequestsTask task(
+      &store, request_ids,
+      base::Bind(&RemoveRequestsTaskTest::RemoveRequestsCallback,
+                 base::Unretained(this)));
+  task.Run();
+  PumpLoop();
+  ASSERT_TRUE(last_result());
+  EXPECT_EQ(1UL, last_result()->item_statuses.size());
+  EXPECT_EQ(kRequestId1, last_result()->item_statuses.at(0).first);
+  EXPECT_EQ(ItemActionStatus::SUCCESS,
+            last_result()->item_statuses.at(0).second);
+  EXPECT_EQ(1UL, last_result()->updated_items.size());
+  EXPECT_EQ(kRequestId1, last_result()->updated_items.at(0).request_id());
+}
+
+TEST_F(RemoveRequestsTaskTest, DeleteWithEmptyIdList) {
+  RequestQueueInMemoryStore store;
+  std::vector<int64_t> request_ids;
+  RemoveRequestsTask task(
+      &store, request_ids,
+      base::Bind(&RemoveRequestsTaskTest::RemoveRequestsCallback,
+                 base::Unretained(this)));
+  task.Run();
+  PumpLoop();
+  ASSERT_TRUE(last_result());
+  EXPECT_EQ(0UL, last_result()->item_statuses.size());
+  EXPECT_EQ(0UL, last_result()->updated_items.size());
+}
+
+TEST_F(RemoveRequestsTaskTest, RemoveMissingItem) {
+  RequestQueueInMemoryStore store;
+  SetUpStore(&store);
+  std::vector<int64_t> request_ids{kRequestId1, kRequestId2};
+  RemoveRequestsTask task(
+      &store, request_ids,
+      base::Bind(&RemoveRequestsTaskTest::RemoveRequestsCallback,
+                 base::Unretained(this)));
+  task.Run();
+  PumpLoop();
+  ASSERT_TRUE(last_result());
+  EXPECT_EQ(2UL, last_result()->item_statuses.size());
+  EXPECT_EQ(kRequestId1, last_result()->item_statuses.at(0).first);
+  EXPECT_EQ(ItemActionStatus::SUCCESS,
+            last_result()->item_statuses.at(0).second);
+  EXPECT_EQ(kRequestId2, last_result()->item_statuses.at(1).first);
+  EXPECT_EQ(ItemActionStatus::NOT_FOUND,
+            last_result()->item_statuses.at(1).second);
+  EXPECT_EQ(1UL, last_result()->updated_items.size());
+  EXPECT_EQ(kRequestId1, last_result()->updated_items.at(0).request_id());
+}
+
+}  // namespace offline_pages