public void Shift_on_wrap_around()
{
var events = Substitute.For <IEventAggregator>();
AudioShiftedEvent shifted = null;
events.When(x => x.PublishOnCurrentThread(Arg.Any <AudioShiftedEvent>()))
.Do(x => shifted = x.Arg <AudioShiftedEvent>());
using (
var sut = new BufferedStreamingChannel(events, new Uri("channel://1/"), new WaveFormat(8000, 8, 1),
TimeSpan.FromSeconds(2))
{
PreserveAfterWrapAround = TimeSpan.FromSeconds(1)
})
{
sut.Stream.CurrentTime = sut.PreserveAfterWrapAround;
var startTime = sut.StartTime;
sut.BufferedStream.OnWrappedAround();
sut.Stream.CurrentTime.Should().Be(TimeSpan.Zero);
sut.StartTime.Should().Be(startTime + sut.PreserveAfterWrapAround);
shifted.Shift.Should().Be(sut.PreserveAfterWrapAround);
}
}
public void Handle_shift_events()
{
var ctx = new ContextFor <WaveformDisplayViewModel>();
var sut = ctx.BuildSut();
sut.Should().BeAssignableTo <IHandle <AudioShiftedEvent> >();
var source = new Uri("http://some/audio/");
var shift = TimeSpan.FromSeconds(3);
var newStartTime = DateTimeOffset.Now;
var e = new AudioShiftedEvent(source, shift, newStartTime);
sut.Source.Should().BeNull("skip shift if not same source");
sut.Handle(e);
sut.Source = source;
sut.WaveformImage = BitmapFactory.New(20, 20);
sut.Duration.Should().Be(0, "skip shifts if duration 0");
sut.Handle(e);
sut.Duration = shift.TotalSeconds * 2;
sut.HandleShift(e.Shift.TotalSeconds);
}
public void Support_start_time_with_shifts()
{
var uri = new Uri("http://some/uri/audio.wav");
var ctx = new ContextFor <WaveformPlayerViewModel>();
var d = DateTimeOffset.UtcNow;
var sut = ctx.BuildSut();
sut.Should().BeAssignableTo <IHandle <AudioShiftedEvent> >();
ctx.For <IEventAggregator>().Received().Subscribe(sut);
var getTime = ctx.For <IGetTimeStamp>();
getTime.For(uri).Returns(d);
sut.Source = uri;
sut.HasCurrentTime.Should().BeTrue();
sut.StartTime.Should().Be(d);
var shiftedEvent = new AudioShiftedEvent(uri, TimeSpan.FromSeconds(3), sut.StartTime);
sut.Handle(shiftedEvent);
sut.StartTime.Should().Be(d + shiftedEvent.Shift);
}
