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// 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 "cc/scheduler/vsync_time_source.h"
#include "cc/test/scheduler_test_common.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace cc {
namespace {
class FakeVSyncProvider : public VSyncProvider {
public:
FakeVSyncProvider() : client_(NULL) {}
// VSyncProvider implementation.
virtual void RequestVSyncNotification(VSyncClient* client) OVERRIDE {
client_ = client;
}
bool IsVSyncNotificationEnabled() const { return client_ != NULL; }
void Trigger(base::TimeTicks frame_time) {
if (client_)
client_->DidVSync(frame_time);
}
private:
VSyncClient* client_;
};
class VSyncTimeSourceTest : public testing::Test {
public:
VSyncTimeSourceTest() : timer_(VSyncTimeSource::Create(&provider_)) {
timer_->SetClient(&client_);
}
protected:
FakeTimeSourceClient client_;
FakeVSyncProvider provider_;
scoped_refptr<VSyncTimeSource> timer_;
};
TEST_F(VSyncTimeSourceTest, TaskPostedAndTickCalled) {
EXPECT_FALSE(provider_.IsVSyncNotificationEnabled());
timer_->SetActive(true);
EXPECT_TRUE(provider_.IsVSyncNotificationEnabled());
base::TimeTicks frame_time = base::TimeTicks::Now();
provider_.Trigger(frame_time);
EXPECT_TRUE(client_.TickCalled());
EXPECT_EQ(timer_->LastTickTime(), frame_time);
}
TEST_F(VSyncTimeSourceTest, NotificationDisabledLazily) {
base::TimeTicks frame_time = base::TimeTicks::Now();
// Enable timer and trigger sync once.
timer_->SetActive(true);
EXPECT_TRUE(provider_.IsVSyncNotificationEnabled());
provider_.Trigger(frame_time);
EXPECT_TRUE(client_.TickCalled());
// Disabling the timer should not disable vsync notification immediately.
client_.Reset();
timer_->SetActive(false);
EXPECT_TRUE(provider_.IsVSyncNotificationEnabled());
// At the next vsync the notification is disabled, but the timer isn't ticked.
provider_.Trigger(frame_time);
EXPECT_FALSE(provider_.IsVSyncNotificationEnabled());
EXPECT_FALSE(client_.TickCalled());
// The notification should not be disabled multiple times.
provider_.RequestVSyncNotification(timer_.get());
provider_.Trigger(frame_time);
EXPECT_TRUE(provider_.IsVSyncNotificationEnabled());
EXPECT_FALSE(client_.TickCalled());
}
TEST_F(VSyncTimeSourceTest, ValidNextTickTime) {
base::TimeTicks frame_time = base::TimeTicks::Now();
base::TimeDelta interval = base::TimeDelta::FromSeconds(1);
ASSERT_EQ(timer_->NextTickTime(), base::TimeTicks());
timer_->SetActive(true);
provider_.Trigger(frame_time);
ASSERT_EQ(timer_->NextTickTime(), frame_time);
timer_->SetTimebaseAndInterval(frame_time, interval);
ASSERT_EQ(timer_->NextTickTime(), frame_time + interval);
}
} // namespace
} // namespace cc
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