public async Task OpenAsync_InnerCompleted_SutIsOpen()
{
var innerHandlerMock = Substitute.For<IDelegatingHandler>();
innerHandlerMock.OpenAsync(true).Returns(t => TaskConstants.Completed);
var sut = new GateKeeperDelegatingHandler(innerHandlerMock);
await sut.OpenAsync();
}
public async Task OpenAsync_TwoCallers_OnlyOneOpenCalled()
{
var tcs = new TaskCompletionSource();
var innerHandlerMock = Substitute.For<IDelegatingHandler>();
int callCounter = 0;
innerHandlerMock.OpenAsync(true).Returns(t =>
{
callCounter++;
return tcs.Task;
});
var sut = new GateKeeperDelegatingHandler(innerHandlerMock);
Task firstOpen = sut.OpenAsync();
Task secondOpen = sut.OpenAsync();
tcs.Complete();
await Task.WhenAll(firstOpen, secondOpen);
Assert.AreEqual(1, callCounter);
}
public async Task OpenAsync_InnerCancelled_SutIsOpenAndCanBeReopen()
{
var tcs = new TaskCompletionSource();
tcs.SetCanceled();
var innerHandlerMock = Substitute.For<IDelegatingHandler>();
innerHandlerMock.OpenAsync(true).Returns(tcs.Task);
var sut = new GateKeeperDelegatingHandler(innerHandlerMock);
await sut.OpenAsync().ExpectedAsync<TaskCanceledException>();
innerHandlerMock.OpenAsync(true).Returns(t => TaskConstants.Completed);
await sut.OpenAsync();
}
public async Task OpenAsync_InnerFailed_SutIsOpenAndCanBeReopen()
{
var innerHandlerMock = Substitute.For<IDelegatingHandler>();
innerHandlerMock.OpenAsync(Arg.Is(true)).Returns(ci =>
{
throw new IOException();
});
var sut = new GateKeeperDelegatingHandler(innerHandlerMock);
await ((Func<Task>)sut.OpenAsync).ExpectedAsync<IOException>();
innerHandlerMock.OpenAsync(Arg.Is(true)).Returns(t => TaskConstants.Completed);
await sut.OpenAsync();
}
