public void ExecutionContextScopeDispose_WithWhenScopeEndsRegistration_CallsTheRegisteredAction()
{
// Arrange
int actionCallCount = 0;
var container = new Container();
var lifestyle = new ExecutionContextScopeLifestyle();
container.Register <DisposableCommand, DisposableCommand>(lifestyle);
container.RegisterInitializer <DisposableCommand>(command =>
{
lifestyle.WhenScopeEnds(container, () => { actionCallCount++; });
});
var scope = container.BeginExecutionContextScope();
try
{
container.GetInstance <DisposableCommand>();
}
finally
{
// Act
scope.Dispose();
}
// Assert
Assert.AreEqual(1, actionCallCount, "Delegate is expected to be called exactly once.");
}
public void WhenScopeEnds_NullActionArgument_ThrowsException()
{
// Arrange
Action invalidArgument = null;
var lifestyle = new ExecutionContextScopeLifestyle();
// Act
Action action = () => lifestyle.WhenScopeEnds(new Container(), invalidArgument);
// Assert
AssertThat.Throws <ArgumentNullException>(action);
}
public void ContainerVerify_WithWhenScopeEndsRegistration_Succeeds()
{
// Arrange
var container = new Container();
var lifestyle = new ExecutionContextScopeLifestyle();
container.Register <ICommand, DisposableCommand>(lifestyle);
container.RegisterInitializer <DisposableCommand>(command =>
{
lifestyle.WhenScopeEnds(container, () => { });
});
// Act
container.Verify();
}
public void ExecutionContextScopeDispose_WithWhenScopeEndsRegistration_CallsTheRegisteredActionBeforeCallingDispose()
{
// Arrange
bool delegateHasBeenCalled = false;
DisposableCommand instanceToDispose = null;
var container = new Container();
var lifestyle = new ExecutionContextScopeLifestyle();
container.Register <DisposableCommand, DisposableCommand>(lifestyle);
container.RegisterInitializer <DisposableCommand>(command =>
{
lifestyle.WhenScopeEnds(container, () =>
{
Assert.IsFalse(command.HasBeenDisposed,
"The action should be called before disposing the instance, because users are " +
"to use those instances.");
delegateHasBeenCalled = true;
});
});
var scope = container.BeginExecutionContextScope();
try
{
instanceToDispose = container.GetInstance <DisposableCommand>();
}
finally
{
// Act
scope.Dispose();
}
// Assert
Assert.IsTrue(delegateHasBeenCalled, "Delegate is expected to be called.");
}
public void WhenScopeEnds_CalledOutOfTheContextOfAExecutionContextScope_ThrowsException()
{
// Arrange
var lifestyle = new ExecutionContextScopeLifestyle();
var container = new Container();
container.Register <ConcreteCommand>(new ExecutionContextScopeLifestyle());
try
{
// Act
lifestyle.WhenScopeEnds(container, () => { });
// Assert
Assert.Fail("Exception expected.");
}
catch (InvalidOperationException ex)
{
Assert.IsTrue(ex.Message.Contains(
"This method can only be called within the context of an active Execution Context Scope."),
"Actual: " + ex.Message);
}
}