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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/views/repeat_controller.h"
#include "base/functional/bind.h"
#include "base/test/task_environment.h"
#include "base/time/time.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace views {
namespace {
class RepeatControllerTest : public testing::Test {
public:
RepeatControllerTest() = default;
~RepeatControllerTest() override = default;
void SetUp() override {
// Ensures that the callback hasn't fired at initialization.
ASSERT_EQ(0, times_called_);
}
protected:
// Short wait that must be below both
// RepeatController::GetInitialWaitForTesting() and
// RepeatController::GetRepeatingWaitForTesting().
static constexpr base::TimeDelta kShortWait = base::Milliseconds(10);
static_assert(
kShortWait < RepeatController::GetInitialWaitForTesting(),
"kShortWait must be shorter than the RepeatController initial wait.");
static_assert(
kShortWait < RepeatController::GetRepeatingWaitForTesting(),
"kShortWait must be shorter than the RepeatController repeating wait.");
int times_called() const { return times_called_; }
RepeatController& repeat_controller() { return repeat_controller_; }
void AdvanceTime(base::TimeDelta time_delta) {
task_environment_.FastForwardBy(time_delta);
}
private:
void IncrementTimesCalled() { ++times_called_; }
int times_called_ = 0;
base::test::TaskEnvironment task_environment_{
base::test::TaskEnvironment::TimeSource::MOCK_TIME};
RepeatController repeat_controller_{
base::BindRepeating(&RepeatControllerTest::IncrementTimesCalled,
base::Unretained(this)),
task_environment_.GetMockTickClock()};
};
// static
constexpr base::TimeDelta RepeatControllerTest::kShortWait;
} // namespace
TEST_F(RepeatControllerTest, StartStop) {
repeat_controller().Start();
repeat_controller().Stop();
EXPECT_EQ(0, times_called());
}
TEST_F(RepeatControllerTest, StartShortWait) {
repeat_controller().Start();
AdvanceTime(RepeatController::GetInitialWaitForTesting() - kShortWait);
EXPECT_EQ(0, times_called());
repeat_controller().Stop();
}
TEST_F(RepeatControllerTest, StartInitialWait) {
repeat_controller().Start();
AdvanceTime(RepeatController::GetInitialWaitForTesting() +
RepeatController::GetRepeatingWaitForTesting() - kShortWait);
EXPECT_EQ(1, times_called());
repeat_controller().Stop();
}
TEST_F(RepeatControllerTest, StartLongerWait) {
constexpr int kExpectedCallbacks = 34;
repeat_controller().Start();
AdvanceTime(RepeatController::GetInitialWaitForTesting() +
(RepeatController::GetRepeatingWaitForTesting() *
(kExpectedCallbacks - 1)) +
kShortWait);
EXPECT_EQ(kExpectedCallbacks, times_called());
repeat_controller().Stop();
}
TEST_F(RepeatControllerTest, NoCallbacksAfterStop) {
constexpr int kExpectedCallbacks = 34;
repeat_controller().Start();
AdvanceTime(RepeatController::GetInitialWaitForTesting() +
(RepeatController::GetRepeatingWaitForTesting() *
(kExpectedCallbacks - 1)) +
kShortWait);
repeat_controller().Stop();
AdvanceTime(RepeatController::GetInitialWaitForTesting() +
RepeatController::GetRepeatingWaitForTesting());
EXPECT_EQ(kExpectedCallbacks, times_called());
}
} // namespace views
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