public void Delayer_DelayAsyncWithNullTestKitBase_ThrowsArgumentNullException()
{
//arrange
Delayer sut = CreateDelayer();
//act
Func <Task> act = () => sut.DelayAsync(null, TimeSpan.Zero);
//assert
act.Should().Throw <ArgumentNullException>();
}
public async Task Delayer_DelayAsyncWithNegativeDuration_DoesNotDelayAsync()
{
//arrange
TimeSpan duration = TimeSpan.FromSeconds(TestHelper.GenerateNumberBetween(-1000, -1));
Delayer sut = CreateDelayer();
//act
Func <Task> act = () => sut.DelayAsync(TestKit, duration);
//assert
TimeSpan expected = TimeSpan.Zero;
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
await act().ConfigureAwait(false);
stopwatch.Stop();
stopwatch.Elapsed.Should().BeCloseTo(expected, 250);
}
public async Task Delayer_DelayAsyncWithZeroDuration_DoesNotDelayAsync()
{
//arrange
TimeSpan duration = TimeSpan.Zero;
Delayer sut = CreateDelayer();
//act
Func <Task> act = () => sut.DelayAsync(TestKit, duration);
//assert
TimeSpan expected = TimeSpan.Zero;
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
await act().ConfigureAwait(false);
stopwatch.Stop();
stopwatch.Elapsed.Should().BeCloseTo(expected, 250);
}
public async Task Delayer_DelayAsyncWithPositiveDuration_DelaysForDilatedDurationAsync()
{
//arrange
TimeSpan duration = TimeSpan.FromSeconds(1);
Delayer sut = CreateDelayer();
//act
Func <Task> act = () => sut.DelayAsync(TestKit, duration);
//assert
TimeSpan expected = TimeSpan.FromSeconds(duration.TotalSeconds * TimeFactor);
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
await act().ConfigureAwait(false);
stopwatch.Stop();
stopwatch.Elapsed.Should().BeCloseTo(expected, 250);
}
