public void RenderLoop_Render_Runs_Off_Dispatcher()
{
var dispatcher = new Mock <IDispatcher>();
bool inDispatcher = false;
dispatcher.Setup(
d => d.Post(It.IsAny <Action>(), DispatcherPriority.Render))
.Callback((Action a, DispatcherPriority _) =>
{
inDispatcher = true;
a();
inDispatcher = false;
});
var timer = new Mock <IRenderTimer>();
var loop = new RenderLoop(timer.Object, dispatcher.Object);
var renderTask = new Mock <IRenderLoopTask>();
renderTask.Setup(t => t.NeedsUpdate).Returns(true);
renderTask.Setup(t => t.Render())
.Callback(() => Assert.False(inDispatcher));
loop.Add(renderTask.Object);
timer.Raise(t => t.Tick += null, TimeSpan.Zero);
renderTask.Verify(t => t.Update(It.IsAny <TimeSpan>()), Times.Once());
}
public void RenderLoop_Does_Not_Update_When_No_Tasks_Need_Update()
{
var dispatcher = new Mock <IDispatcher>();
dispatcher.Setup(
d => d.InvokeAsync(It.IsAny <Action>(), DispatcherPriority.Render))
.Callback((Action a, DispatcherPriority _) => a())
.Returns(Task.CompletedTask);
var timer = new Mock <IRenderTimer>();
var loop = new RenderLoop(timer.Object, dispatcher.Object);
var renderTask = new Mock <IRenderLoopTask>();
renderTask.Setup(t => t.NeedsUpdate).Returns(false);
loop.Add(renderTask.Object);
timer.Raise(t => t.Tick += null, TimeSpan.Zero);
renderTask.Verify(t => t.Update(It.IsAny <TimeSpan>()), Times.Never());
}
public void RenderLoop_Passes_Tick_Count_To_Update()
{
var dispatcher = new Mock <IDispatcher>();
dispatcher.Setup(
d => d.Post(It.IsAny <Action>(), DispatcherPriority.Render))
.Callback((Action a, DispatcherPriority _) => a());
var timer = new Mock <IRenderTimer>();
var loop = new RenderLoop(timer.Object, dispatcher.Object);
var renderTask = new Mock <IRenderLoopTask>();
renderTask.Setup(t => t.NeedsUpdate).Returns(true);
loop.Add(renderTask.Object);
var time = new TimeSpan(123456789L);
timer.Raise(t => t.Tick += null, time);
renderTask.Verify(t => t.Update(time), Times.Once());
}