public void GetPublishActionReturnsDelegateThatExecutesTheFilterAndThenTheAction() { var executedDelegates = new List <string>(); var actionDelegateReference = new MockDelegateReference((Action <object>) delegate { executedDelegates.Add("Action"); }); var filterDelegateReference = new MockDelegateReference((Predicate <object>) delegate { executedDelegates.Add( "Filter"); return(true); }); var eventSubscription = new EventSubscription <object>( actionDelegateReference, filterDelegateReference); var publishAction = eventSubscription.GetExecutionStrategy(); Assert.IsNotNull(publishAction); publishAction.Invoke(null); Assert.AreEqual(2, executedDelegates.Count); Assert.AreEqual("Filter", executedDelegates[0]); Assert.AreEqual("Action", executedDelegates[1]); }
public void ShouldPassParametersCorrectly() { IDelegateReference actionDelegateReference = new MockDelegateReference { Target = (Action <object>)(arg1 => { return; }) }; IDelegateReference filterDelegateReference = new MockDelegateReference { Target = (Predicate <object>)(arg => true) }; var mockSyncContext = new MockSynchronizationContext(); DispatcherEventSubscription <object> eventSubscription = new DispatcherEventSubscription <object>(actionDelegateReference, filterDelegateReference, mockSyncContext); var executionStrategy = eventSubscription.GetExecutionStrategy(); Assert.IsNotNull(executionStrategy); object argument1 = new object(); executionStrategy.Invoke(new[] { argument1 }); Assert.AreSame(argument1, mockSyncContext.InvokeArg); }
public void NullActionThrows() { var filterDelegateReference = new MockDelegateReference { Target = (Predicate <object>)(arg => true) }; var eventSubscription = new EventSubscription <object>( null, filterDelegateReference); }
public void NullFilterThrows() { var actionDelegateReference = new MockDelegateReference { Target = (Action <object>) delegate { } }; var eventSubscription = new EventSubscription <object>( actionDelegateReference, null); }
public void DifferentTargetTypeInActionThrows() { var actionDelegateReference = new MockDelegateReference { Target = (Action <int>) delegate { } }; var filterDelegateReference = new MockDelegateReference { Target = (Predicate <string>)(arg => true) }; var eventSubscription = new EventSubscription <string>( actionDelegateReference, filterDelegateReference); }
public void CanInitEventSubscription() { var actionDelegateReference = new MockDelegateReference( (Action <object>) delegate { }); var filterDelegateReference = new MockDelegateReference( (Predicate <object>) delegate { return(true); }); var eventSubscription = new EventSubscription <object>( actionDelegateReference, filterDelegateReference); var subscriptionToken = new SubscriptionToken(t => { }); eventSubscription.SubscriptionToken = subscriptionToken; Assert.AreSame(actionDelegateReference.Target, eventSubscription.Action); Assert.AreSame(filterDelegateReference.Target, eventSubscription.Filter); Assert.AreSame(subscriptionToken, eventSubscription.SubscriptionToken); }
public void GetPublishActionReturnsNullIfFilterIsNull() { var actionDelegateReference = new MockDelegateReference( (Action <object>) delegate { }); var filterDelegateReference = new MockDelegateReference( (Predicate <object>) delegate { return(true); }); var eventSubscription = new EventSubscription <object>( actionDelegateReference, filterDelegateReference); var publishAction = eventSubscription.GetExecutionStrategy(); Assert.IsNotNull(publishAction); filterDelegateReference.Target = null; publishAction = eventSubscription.GetExecutionStrategy(); Assert.IsNull(publishAction); }
public void GetPublishActionDoesNotExecuteActionIfFilterReturnsFalse() { bool actionExecuted = false; var actionDelegateReference = new MockDelegateReference { Target = (Action <int>) delegate { actionExecuted = true; } }; var filterDelegateReference = new MockDelegateReference( (Predicate <int>) delegate { return(false); }); var eventSubscription = new EventSubscription <int>( actionDelegateReference, filterDelegateReference); var publishAction = eventSubscription.GetExecutionStrategy(); publishAction.Invoke(new object[] { null }); Assert.IsFalse(actionExecuted); }
public void ShouldCallInvokeOnDispatcher() { IDelegateReference actionDelegateReference = new MockDelegateReference { Target = (Action <object>)(arg => { return; }) }; IDelegateReference filterDelegateReference = new MockDelegateReference { Target = (Predicate <object>)(arg => true) }; var mockSyncContext = new MockSynchronizationContext(); var eventSubscription = new DispatcherEventSubscription <object>( actionDelegateReference, filterDelegateReference, mockSyncContext); eventSubscription.GetExecutionStrategy().Invoke(new object[0]); Assert.IsTrue(mockSyncContext.InvokeCalled); }
public void StrategyPassesArgumentToDelegates() { string passedArgumentToAction = null; string passedArgumentToFilter = null; var actionDelegateReference = new MockDelegateReference( (Action <string>)(obj => passedArgumentToAction = obj)); var filterDelegateReference = new MockDelegateReference( (Predicate <string>)(obj => { passedArgumentToFilter = obj; return(true); })); var eventSubscription = new EventSubscription <string>( actionDelegateReference, filterDelegateReference); var publishAction = eventSubscription.GetExecutionStrategy(); publishAction.Invoke(new[] { "TestString" }); Assert.AreEqual("TestString", passedArgumentToAction); Assert.AreEqual("TestString", passedArgumentToFilter); }
public void ShouldReceiveDelegateOnDifferentThread() { var completeEvent = new ManualResetEvent(false); SynchronizationContext.SetSynchronizationContext( new SynchronizationContext()); SynchronizationContext calledSyncContext = null; Action <object> action = delegate { calledSyncContext = SynchronizationContext.Current; completeEvent.Set(); }; IDelegateReference actionDelegateReference = new MockDelegateReference { Target = action }; IDelegateReference filterDelegateReference = new MockDelegateReference { Target = (Predicate <object>) delegate { return(true); } }; var eventSubscription = new BackgroundEventSubscription <object>( actionDelegateReference, filterDelegateReference); var publishAction = eventSubscription.GetExecutionStrategy(); Assert.IsNotNull(publishAction); publishAction.Invoke(null); completeEvent.WaitOne(5000); Assert.AreNotEqual(SynchronizationContext.Current, calledSyncContext); }