public void CallSchedulerFactoryOnCreation()
{
var schedulerFactoryCalls = 0;
var schedulerFactory = new Func <IScheduler>(() => { schedulerFactoryCalls++; return(null); });
var sut = new WaitForDispatcherScheduler(schedulerFactory);
Assert.Equal(1, schedulerFactoryCalls);
}
public void SuccessfulFactory_UsesCachedScheduler()
{
var schedulerFactoryCalls = 0;
var schedulerFactory = new Func <IScheduler>(() => {
schedulerFactoryCalls++;
return(CurrentThreadScheduler.Instance);
});
var sut = new WaitForDispatcherScheduler(schedulerFactory);
sut.Schedule(() => { });
Assert.Equal(1, schedulerFactoryCalls);
}
public void FactoryThrowsException_ReCallsOnSchedule()
{
var schedulerFactoryCalls = 0;
var schedulerFactory = new Func <IScheduler>(() => {
schedulerFactoryCalls++;
throw new InvalidOperationException();
});
var sut = new WaitForDispatcherScheduler(schedulerFactory);
sut.Schedule(() => { });
Assert.Equal(2, schedulerFactoryCalls);
}
public void FactoryThrowsArgumentNullException_FallsBackToCurrentThread()
{
IScheduler?schedulerExecutedOn = null;
var schedulerFactory = new Func <IScheduler>(() => throw new ArgumentNullException());
var sut = new WaitForDispatcherScheduler(schedulerFactory);
sut.Schedule <object>(
null !,
(scheduler, state) =>
{
schedulerExecutedOn = scheduler;
return(Disposable.Empty);
});
Assert.Equal(CurrentThreadScheduler.Instance, schedulerExecutedOn);
}
public void FactoryThrowsArgumentNullException_FallsBackToCurrentThread()
{
IScheduler schedulerExecutedOn = null;
#pragma warning disable CA2208 // Instantiate argument exceptions correctly
var schedulerFactory = new Func <IScheduler>(() => throw new ArgumentNullException());
#pragma warning restore CA2208 // Instantiate argument exceptions correctly
var sut = new WaitForDispatcherScheduler(schedulerFactory);
sut.Schedule <object>(
null,
(scheduler, state) =>
{
schedulerExecutedOn = scheduler;
return(Disposable.Empty);
});
Assert.Equal(CurrentThreadScheduler.Instance, schedulerExecutedOn);
}
