public async Task PeriodicTask_ShouldEndApplication_IfFailureModeIsSetToCrash()
{
// Arrange
var applicationEnder = new ApplicationEnderMock();
var factory = this._factory.WithWebHostBuilder(builder =>
{
builder.ConfigureTestServices(services =>
{
services.AddTransient <IApplicationEnder>(s => applicationEnder);
services.AddPeriodicTask <CrashingPeriodicTask>(PeriodicTaskFailureMode.CrashApplication, TimeSpan.FromSeconds(1));
});
});
var client = factory.CreateClient();
// Act & assert - we should crash here at some point
// Task is hella flaky because it depends on the internals of the IHostedService - try yielding a bunch of times
// to hope that it's done requesting application shutdown at this point
for (int i = 0; i < 10; i++)
{
await Task.Delay(50);
await Task.Yield();
}
// due to https://github.com/dotnet/aspnetcore/issues/25857 we can't test if the process is closed directly
applicationEnder.ShutDownRequested.Should().BeTrue();
}
public async Task PeriodicTask_ShouldContinueRunningTasks_IfFailureModeIsSetToRetry()
{
// Arrange
var applicationEnder = new ApplicationEnderMock();
var stateHolder = new SingletonStateHolder();
var factory = this._factory.WithWebHostBuilder(builder =>
{
builder.ConfigureTestServices(services =>
{
services.AddTransient <IApplicationEnder>(s => applicationEnder);
services.AddPeriodicTask <IncrementingThenCrashingPeriodicTask>(PeriodicTaskFailureMode.RetryLater, TimeSpan.FromMilliseconds(50));
services.AddSingleton <SingletonStateHolder>(s => stateHolder);
});
});
var client = factory.CreateClient();
// Act & assert - we crash here after each invocation, but we truck on. The stateHolder should keep being incremented
// Task is hella flaky because it depends on the internals of the IHostedService - try yielding a bunch of times
// to hope that it's done requesting application shutdown at this point
for (int i = 0; i < 10; i++)
{
await Task.Delay(100); // 1s ms all in all
await Task.Yield();
}
stateHolder.Count.Should().BeGreaterThan(5);
// due to https://github.com/dotnet/aspnetcore/issues/25857 we can't test if the process is closed directly
applicationEnder.ShutDownRequested.Should().BeFalse();
}
public async Task WhenCriticalBackgroundService_YieldsBeforeThrowingError_ApplicationShouldCrash()
{
var applicationEnder = new ApplicationEnderMock();
var factory = this._factory.WithWebHostBuilder(builder =>
{
builder.ConfigureTestServices(services =>
{
services.AddTransient <IApplicationEnder>(s => applicationEnder);
services.AddHostedService <YieldingAndThenCrashingCriticalBackgroundService>();
});
});
var client = factory.CreateClient();
var res = await client.GetAsync("/");
// Task is hella flaky because it depends on the internals of the IHostedService - try yielding a bunch of times
// to hope that it's done requesting application shutdown at this point
for (int i = 0; i < 10; i++)
{
await Task.Delay(50);
await Task.Yield();
}
// due to https://github.com/dotnet/aspnetcore/issues/25857 we can't test if the process is closed directly
applicationEnder.ShutDownRequested.Should().BeTrue();
}
