public async Task Iterate()
{
var nrOfCalls = 0;
var iterate = AsyncTailFunc <int, int> .As(async (me, val) =>
{
await Task.Delay(1);
if (val < 42)
{
return(await me(val + 1));
}
else
{
return(val);
}
})
.InterceptWith(_ => nrOfCalls += 1)
.ToFunc();
var result = await iterate(1);
result.ShouldBe(42);
nrOfCalls.ShouldBe(42);
}
public async Task StackSizeIsConstant()
{
int?previousStackFrameCount = null;
await AsyncTailFunc <int, int> .As(async (me, val) =>
{
await Task.Delay(1);
var currentStackFrameCount = new StackTrace().FrameCount;
if (previousStackFrameCount.HasValue)
{
currentStackFrameCount.ShouldBeLessThanOrEqualTo(previousStackFrameCount.Value);
}
previousStackFrameCount = currentStackFrameCount;
if (val < 42)
{
return(await me(val + 1));
}
else
{
return(val);
}
}).Run(1);
}
