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 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.Equal("TestString", passedArgumentToAction);
Assert.Equal("TestString", passedArgumentToFilter);
}
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.NotNull(publishAction);
filterDelegateReference.Target = null;
publishAction = eventSubscription.GetExecutionStrategy();
Assert.Null(publishAction);
}
public void GetPublishActionReturnsNullIfActionIsNullNonGeneric()
{
var actionDelegateReference = new MockDelegateReference((Action)delegate { });
var eventSubscription = new EventSubscription(actionDelegateReference);
var publishAction = eventSubscription.GetExecutionStrategy();
Assert.NotNull(publishAction);
actionDelegateReference.Target = null;
publishAction = eventSubscription.GetExecutionStrategy();
Assert.Null(publishAction);
}
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.NotNull(publishAction);
publishAction.Invoke(null);
Assert.Equal(2, executedDelegates.Count);
Assert.Equal("Filter", executedDelegates[0]);
Assert.Equal("Action", executedDelegates[1]);
}
