public void SyncWithActionCapturesException()
{
// Arrange
InvalidOperationException exception = new InvalidOperationException("Some exception text.");
Mock <SynchronizationContext> mockSyncContext = new Mock <SynchronizationContext>();
mockSyncContext
.Setup(sc => sc.Send(It.IsAny <SendOrPostCallback>(), null))
.Callback(
delegate(SendOrPostCallback d, object state)
{
try
{
d(state);
}
catch
{
// swallow exceptions, just like AspNetSynchronizationContext
}
});
// Act & assert
SynchronousOperationException thrownException = Assert.Throws <SynchronousOperationException>(
delegate { SynchronizationContextUtil.Sync(mockSyncContext.Object, () => { throw exception; }); },
@"An operation that crossed a synchronization context failed. See the inner exception for more information.");
Assert.Equal(exception, thrownException.InnerException);
}
public void SyncWithAction()
{
// Arrange
bool actionWasCalled = false;
bool sendWasCalled = false;
Mock <SynchronizationContext> mockSyncContext = new Mock <SynchronizationContext>();
mockSyncContext
.Setup(sc => sc.Send(It.IsAny <SendOrPostCallback>(), null))
.Callback(
delegate(SendOrPostCallback d, object state)
{
sendWasCalled = true;
d(state);
}
);
// Act
SynchronizationContextUtil.Sync(
mockSyncContext.Object,
() =>
{
actionWasCalled = true;
}
);
// Assert
Assert.True(actionWasCalled);
Assert.True(sendWasCalled);
}
public void SyncWithFunc()
{
// Arrange
bool sendWasCalled = false;
Mock <SynchronizationContext> mockSyncContext = new Mock <SynchronizationContext>();
mockSyncContext
.Expect(sc => sc.Send(It.IsAny <SendOrPostCallback>(), null))
.Callback(
delegate(SendOrPostCallback d, object state) {
sendWasCalled = true;
d(state);
});
// Act
int retVal = SynchronizationContextUtil.Sync(mockSyncContext.Object, () => 42);
// Assert
Assert.AreEqual(42, retVal);
Assert.IsTrue(sendWasCalled);
}
