public async Task When_task_completes_on_UI_thread_slow_async_it_should_fail()
{
// Arrange
var timer = new FakeClock();
var taskFactory = new TaskCompletionSource <bool>();
// Act
Func <Task> action = () => taskFactory.Awaiting(t => (Task)t.Task).Should(timer).CompleteWithinAsync(100.Milliseconds());
timer.Complete();
// Assert
await action.Should().ThrowAsync <XunitException>();
}
public async Task When_TCS_did_not_complete_in_time_and_it_is_not_expected_it_should_succeed()
{
// Arrange
var subject = new TaskCompletionSource <bool>();
var timer = new FakeClock();
// Act
Func <Task> action = () => subject.Should(timer).NotCompleteWithinAsync(1.Seconds());
timer.Complete();
// Assert
await action.Should().NotThrowAsync();
}
public async Task When_TCS_did_not_complete_in_time_it_should_fail()
{
// Arrange
var subject = new TaskCompletionSource <bool>();
var timer = new FakeClock();
// Act
Func <Task> action = () => subject.Should(timer).CompleteWithinAsync(1.Seconds(), "test {0}", "testArg");
timer.Complete();
// Assert
await action.Should().ThrowAsync <XunitException>()
.WithMessage("Expected subject to complete within 1s because test testArg.");
}
public async Task When_TCS_completes_in_time_and_async_result_is_expected_it_should_succeed()
{
// Arrange
var subject = new TaskCompletionSource <int>();
var timer = new FakeClock();
// Act
Func <Task> action = () => subject.Should(timer).CompleteWithinAsync(1.Seconds()).WithResult(42);
subject.SetResult(42);
timer.Complete();
// Assert
await action.Should().NotThrowAsync();
}
public async Task When_TCS_completes_in_time_and_it_is_not_expected_it_should_fail()
{
// Arrange
var subject = new TaskCompletionSource <bool>();
var timer = new FakeClock();
// Act
Func <Task> action = () => subject.Should(timer).NotCompleteWithinAsync(1.Seconds(), "test {0}", "testArg");
subject.SetResult(true);
timer.Complete();
// Assert
await action.Should().ThrowAsync <XunitException>().WithMessage("*to not complete within*because test testArg*");
}
public async Task When_task_completes_fast_async_it_should_succeed()
{
// Arrange
var timer = new FakeClock();
var taskFactory = new TaskCompletionSource <bool>();
// Act
Func <Task> action = () => taskFactory.Awaiting(t => (Task)t.Task).Should(timer).CompleteWithinAsync(100.Milliseconds());
taskFactory.SetResult(true);
timer.Complete();
// Assert
await action.Should().NotThrowAsync();
}
public async Task When_TCS_completes_in_time_and_async_result_is_not_expected_it_should_fail()
{
// Arrange
var testSubject = new TaskCompletionSource <int>();
var timer = new FakeClock();
// Act
Func <Task> action = () => testSubject.Should(timer).CompleteWithinAsync(1.Seconds()).WithResult(42);
testSubject.SetResult(99);
timer.Complete();
// Assert
await action.Should().ThrowAsync <XunitException>()
.WithMessage("Expected testSubject to be 42, but found 99.");
}
public async Task When_should_is_passed_argument_context_should_still_be_found()
{
// Arrange
var bob = new TaskCompletionSource <bool>();
var timer = new FakeClock();
// Act
Func <Task> action = () => bob.Should(timer).NotCompleteWithinAsync(1.Seconds(), "test {0}", "testArg");
bob.SetResult(true);
timer.Complete();
// Assert
await action.Should().ThrowAsync <XunitException>()
.WithMessage("Expected bob to not complete within 1s because test testArg.");
}
public async Task When_task_completes_slow_async_it_should_fail()
{
// Arrange
var timer = new FakeClock();
var taskFactory = new TaskCompletionSource <int>();
// Act
Func <Task> action = () =>
{
Func <Task <int> > func = () => taskFactory.Task;
return(func.Should(timer).CompleteWithinAsync(100.Milliseconds()));
};
timer.Complete();
// Assert
await action.Should().ThrowAsync <XunitException>();
}
public async Task When_task_completes_async_and_async_result_is_not_expected_it_should_throw()
{
// Arrange
var timer = new FakeClock();
var taskFactory = new TaskCompletionSource <int>();
// Act
Func <Task> action = async() =>
{
Func <Task <int> > funcSubject = () => taskFactory.Task;
await funcSubject.Should(timer).CompleteWithinAsync(100.Milliseconds()).WithResult(42);
};
taskFactory.SetResult(99);
timer.Complete();
// Assert
await action.Should().ThrowAsync <XunitException>().WithMessage("Expected funcSubject to be 42, but found 99.");
}
public async Task When_task_completes_fast_async_it_should_succeed()
{
// Arrange
var timer = new FakeClock();
var taskFactory = new TaskCompletionSource <int>();
// Act
Func <Task> action = async() =>
{
Func <Task <int> > func = () => taskFactory.Task;
(await func.Should(timer).CompleteWithinAsync(100.Milliseconds()))
.Which.Should().Be(42);
};
taskFactory.SetResult(42);
timer.Complete();
// Assert
await action.Should().NotThrowAsync();
}
public async Task When_task_does_not_throw_async_on_UI_thread_it_should_succeed()
{
// Arrange
var timer = new FakeClock();
var taskFactory = new TaskCompletionSource <int>();
// Act
Func <Task> action = async() =>
{
Func <Task <int> > func = () => taskFactory.Task;
(await func.Should(timer).NotThrowAsync())
.Which.Should().Be(42);
};
taskFactory.SetResult(42);
timer.Complete();
// Assert
await action.Should().NotThrowAsync();
}
public async Task Sync_work_in_async_method_is_taken_into_account()
{
// Arrange
var timer = new FakeClock();
var taskFactory = new TaskCompletionSource <bool>();
// Act
Func <Task> action = () => taskFactory
.Awaiting(t =>
{
timer.Delay(101.Milliseconds());
return((Task)t.Task);
})
.Should(timer)
.CompleteWithinAsync(100.Milliseconds());
taskFactory.SetResult(true);
timer.Complete();
// Assert
await action.Should().ThrowAsync <XunitException>();
}
public async Task When_task_completes_async_and_result_is_not_expected_it_should_throw()
{
// Arrange
var timer = new FakeClock();
var taskFactory = new TaskCompletionSource <int>();
// Act
Func <Task> action = async() =>
{
Func <Task <int> > funcSubject = () => taskFactory.Task;
(await funcSubject.Should(timer).CompleteWithinAsync(100.Milliseconds()))
.Which.Should().Be(42);
};
taskFactory.SetResult(99);
timer.Complete();
// Assert
// TODO message currently shows "Expected (await funcSubject to be...", but should be "Expected funcSubject to be...",
// maybe with or without await.
await action.Should().ThrowAsync <XunitException>().WithMessage("*to be 42, but found 99.");
}