public async Task StartAsync_ProperlyCanceled()
{
MockRunner runnerMock = new MockRunner(t => Task.Delay(int.MaxValue, t));
MockLifetime lifetimeMock = new MockLifetime();
ILogger <OmexHostedService> loggerMock = new NullLogger <OmexHostedService>();
OmexHostedService hostedService = new OmexHostedService(runnerMock, lifetimeMock, loggerMock);
Assert.IsFalse(runnerMock.IsStarted, "RunServiceAsync should not be called after constructor");
await hostedService.StartAsync(CancellationToken.None);
Assert.IsFalse(runnerMock.IsStarted, "RunServiceAsync should not be called after StartAsync");
lifetimeMock.ApplicationStartedSource.Cancel();
Assert.IsTrue(runnerMock.IsStarted, "RunServiceAsync should not be called after StartAsync");
Task task = runnerMock.Task !;
Assert.IsFalse(task.IsCanceled, "Task should not be canceled");
Assert.IsFalse(runnerMock.Token.IsCancellationRequested, "CancelationToken should not be canceled");
lifetimeMock.ApplicationStoppingSource.Cancel();
Assert.IsTrue(runnerMock.Token.IsCancellationRequested, "Task should be canceled");
Assert.IsTrue(task.IsCanceled, "CancelationToken should be canceled");
}
public async Task StartAsync_HandlesExceptions()
{
MockRunner runnerMock = new MockRunner(t => Task.Run(async() =>
{
await Task.Delay(5).ConfigureAwait(false);
throw new ArithmeticException("Totaly valid exeption");
}));
ILogger <OmexHostedService> loggerMock = new NullLogger <OmexHostedService>();
OmexHostedService hostedService = new OmexHostedService(runnerMock, loggerMock);
Assert.IsFalse(runnerMock.IsStarted, "RunServiceAsync should not be called after constructor");
await hostedService.StartAsync(CancellationToken.None).ConfigureAwait(false);
Assert.IsTrue(runnerMock.IsStarted, "RunServiceAsync should be called after StartAsync");
Assert.IsFalse(runnerMock.Token.IsCancellationRequested, "CancelationToken should not be canceled");
await hostedService.StopAsync(CancellationToken.None).ConfigureAwait(false);
Assert.IsTrue(runnerMock.Task !.IsFaulted, "Task should be faulted");
Assert.IsTrue(runnerMock.Token.IsCancellationRequested, "Task should be canceled");
}