public void SafeContinueWith_DefaultExceptionHandlerSet_HandlesException()
{
SpecificException specificException = new SpecificException();
Action <Exception> defaultExceptionHandler = new Mock <Action <Exception> >().Object;
SafeExecutionHelpers.Initialize();
var mockHelpers = new Mock <ISafeExecutionHelpers>();
//Crux - DefaultHandler returns non-null delegate
mockHelpers.SetupGet(h => h.DefaultExceptionHandler).Returns(defaultExceptionHandler);
SafeExecutionHelpers.SetImplementation(mockHelpers.Object);
var dts = new DeterministicTaskScheduler(shouldThrowExceptions: false);
var sut = new SafeTask();
sut.SafeContinueWith <Exception>(
Task.Factory.StartNew(
() => throw specificException,
CancellationToken.None,
TaskCreationOptions.None,
dts),
null,
dts);
dts.RunTasksUntilIdle();
Assert.Contains(specificException, dts.Exceptions);
mockHelpers.Verify(h => h.HandleException <Exception>(specificException, null));
SafeExecutionHelpers.RevertToDefaultImplementation();
}
public void SafeContinueWith_OnExceptionExceptionSet_HandlesException()
{
SpecificException specificException = new SpecificException();
Action <Exception> onException = new Mock <Action <Exception> >().Object;
SafeExecutionHelpers.Initialize();
var mockHelpers = new Mock <ISafeExecutionHelpers>();
SafeExecutionHelpers.SetImplementation(mockHelpers.Object);
var dts = new DeterministicTaskScheduler(shouldThrowExceptions: false);
var sut = new SafeTask();
sut.SafeContinueWith <Exception>(
Task.Factory.StartNew(
() => throw specificException,
CancellationToken.None,
TaskCreationOptions.None,
dts),
onException, //The crux
dts);
dts.RunTasksUntilIdle();
Assert.Contains(specificException, dts.Exceptions);
mockHelpers.Verify(h => h.HandleException(specificException, onException));
SafeExecutionHelpers.RevertToDefaultImplementation();
}
public void SafeContinueWith_NothingSet_HandleExceptionRuns()
{
SpecificException specificException = new SpecificException();
SafeExecutionHelpers.RevertToDefaultImplementation();
var mockHelpers = new Mock <ISafeExecutionHelpers>();
SafeExecutionHelpers.Implementation = mockHelpers.Object;
var dts = new DeterministicTaskScheduler(shouldThrowExceptions: false);
var sut = new SafeTask();
sut.SafeContinueWith <Exception>(
Task.Factory.StartNew(
() => throw specificException,
CancellationToken.None,
TaskCreationOptions.None,
dts),
null,
dts);
dts.RunTasksUntilIdle();
Assert.Contains(specificException, dts.Exceptions);
mockHelpers.Verify(h => h.HandleException <Exception>(specificException, null));
SafeExecutionHelpers.RevertToDefaultImplementation();
}
public void HandleException_SpecificException_SpecificExceptionOnException_Handled()
{
SafeExecutionHelpers.Initialize();
SafeExecutionHelpers.RemoveDefaultExceptionHandler();
var exception = new SpecificException();
var handler = new Mock <Action <SpecificException> >();
SafeExecutionHelpers.HandleException(exception, handler.Object);
handler.Verify(h => h.Invoke(exception));
}
public void HandleException_DefaultHandlerSet_SpecificException_ExceptionOnException__DefaultNotInvoked()
{
SafeExecutionHelpers.Initialize();
SafeExecutionHelpers.RemoveDefaultExceptionHandler();
var defaultHandler = new Mock <Action <Exception> >();
SafeExecutionHelpers.SetDefaultExceptionHandler(defaultHandler.Object);
var exception = new SpecificException();
var handler = new Mock <Action <Exception> >();
SafeExecutionHelpers.HandleException(exception, handler.Object);
Assert.Empty(defaultHandler.Invocations);
}
