Migrate page_load_metrics out of components.

components/page_load_metrics/renderer/page_timing_metrics_sender_unittest.cc

-// Copyright 2015 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/page_load_metrics/renderer/page_timing_metrics_sender.h"
-
-#include "base/time/time.h"
-#include "base/timer/mock_timer.h"
-#include "components/page_load_metrics/common/page_load_timing.h"
-#include "components/page_load_metrics/renderer/fake_page_timing_metrics_ipc_sender.h"
-#include "ipc/ipc_message.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace page_load_metrics {
-
-// Thin wrapper around PageTimingMetricsSender that provides access to the
-// MockTimer instance.
-class TestPageTimingMetricsSender : public PageTimingMetricsSender {
- public:
-  explicit TestPageTimingMetricsSender(IPC::Sender* ipc_sender,
-                                       const PageLoadTiming& initial_timing)
-      : PageTimingMetricsSender(
-            ipc_sender,
-            MSG_ROUTING_NONE,
-            std::unique_ptr<base::Timer>(new base::MockTimer(false, false)),
-            initial_timing) {}
-
-  base::MockTimer* mock_timer() const {
-    return reinterpret_cast<base::MockTimer*>(timer());
-  }
-};
-
-class PageTimingMetricsSenderTest : public testing::Test {
- public:
-  PageTimingMetricsSenderTest()
-      : metrics_sender_(new TestPageTimingMetricsSender(&fake_ipc_sender_,
-                                                        PageLoadTiming())) {}
-
- protected:
-  FakePageTimingMetricsIPCSender fake_ipc_sender_;
-  std::unique_ptr<TestPageTimingMetricsSender> metrics_sender_;
-};
-
-TEST_F(PageTimingMetricsSenderTest, Basic) {
-  base::Time nav_start = base::Time::FromDoubleT(10);
-  base::TimeDelta first_layout = base::TimeDelta::FromMillisecondsD(2);
-
-  PageLoadTiming timing;
-  timing.navigation_start = nav_start;
-  timing.first_layout = first_layout;
-
-  metrics_sender_->Send(timing);
-
-  // Firing the timer should trigger sending of an OnTimingUpdated IPC.
-  fake_ipc_sender_.ExpectPageLoadTiming(timing);
-  ASSERT_TRUE(metrics_sender_->mock_timer()->IsRunning());
-  metrics_sender_->mock_timer()->Fire();
-  EXPECT_FALSE(metrics_sender_->mock_timer()->IsRunning());
-
-  // At this point, we should have triggered the send of the PageLoadTiming IPC.
-  fake_ipc_sender_.VerifyExpectedTimings();
-
-  // Attempt to send the same timing instance again. The send should be
-  // suppressed, since the timing instance hasn't changed since the last send.
-  metrics_sender_->Send(timing);
-  EXPECT_FALSE(metrics_sender_->mock_timer()->IsRunning());
-}
-
-TEST_F(PageTimingMetricsSenderTest, CoalesceMultipleIPCs) {
-  base::Time nav_start = base::Time::FromDoubleT(10);
-  base::TimeDelta first_layout = base::TimeDelta::FromMillisecondsD(2);
-  base::TimeDelta load_event = base::TimeDelta::FromMillisecondsD(4);
-
-  PageLoadTiming timing;
-  timing.navigation_start = nav_start;
-  timing.first_layout = first_layout;
-
-  metrics_sender_->Send(timing);
-  ASSERT_TRUE(metrics_sender_->mock_timer()->IsRunning());
-
-  // Send an updated PageLoadTiming before the timer has fired. When the timer
-  // fires, the updated PageLoadTiming should be sent.
-  timing.load_event_start = load_event;
-  metrics_sender_->Send(timing);
-
-  // Firing the timer should trigger sending of the OnTimingUpdated IPC with
-  // the most recently provided PageLoadTiming instance.
-  fake_ipc_sender_.ExpectPageLoadTiming(timing);
-  metrics_sender_->mock_timer()->Fire();
-  EXPECT_FALSE(metrics_sender_->mock_timer()->IsRunning());
-}
-
-TEST_F(PageTimingMetricsSenderTest, MultipleIPCs) {
-  base::Time nav_start = base::Time::FromDoubleT(10);
-  base::TimeDelta first_layout = base::TimeDelta::FromMillisecondsD(2);
-  base::TimeDelta load_event = base::TimeDelta::FromMillisecondsD(4);
-
-  PageLoadTiming timing;
-  timing.navigation_start = nav_start;
-  timing.first_layout = first_layout;
-
-  metrics_sender_->Send(timing);
-  ASSERT_TRUE(metrics_sender_->mock_timer()->IsRunning());
-  fake_ipc_sender_.ExpectPageLoadTiming(timing);
-  metrics_sender_->mock_timer()->Fire();
-  EXPECT_FALSE(metrics_sender_->mock_timer()->IsRunning());
-  fake_ipc_sender_.VerifyExpectedTimings();
-
-  // Send an updated PageLoadTiming after the timer for the first send request
-  // has fired, and verify that a second IPC is sent.
-  timing.load_event_start = load_event;
-  metrics_sender_->Send(timing);
-  ASSERT_TRUE(metrics_sender_->mock_timer()->IsRunning());
-  fake_ipc_sender_.ExpectPageLoadTiming(timing);
-  metrics_sender_->mock_timer()->Fire();
-  EXPECT_FALSE(metrics_sender_->mock_timer()->IsRunning());
-}
-
-TEST_F(PageTimingMetricsSenderTest, SendIPCOnDestructor) {
-  PageLoadTiming timing;
-  timing.navigation_start = base::Time::FromDoubleT(10);
-  timing.first_layout = base::TimeDelta::FromMilliseconds(10);
-
-  // This test wants to verify behavior in the PageTimingMetricsSender
-  // destructor. The EXPECT_CALL will be satisfied when the |metrics_sender_|
-  // is destroyed below.
-  metrics_sender_->Send(timing);
-  fake_ipc_sender_.ExpectPageLoadTiming(timing);
-  ASSERT_TRUE(metrics_sender_->mock_timer()->IsRunning());
-
-  // Destroy |metrics_sender_|, in order to force its destructor to run.
-  metrics_sender_.reset();
-}
-
-}  // namespace page_load_metrics