public void Contravariance_ShouldReturnIEnumerableOfAllCompatibleActions()
{
// Arrange
var targets = CreateTargetContainer();
targets.RegisterObject(new Action <BaseClass, List <string> >(HandleBase));
targets.RegisterObject(new Action <BaseClassChild, List <string> >(HandleChild));
targets.RegisterObject(new Action <BaseClassGrandchild, List <string> >(HandleGrandchild));
var output1 = new List <string>();
var output2 = new List <string>();
var input1 = new BaseClassChild();
var input2 = new BaseClassGrandchild();
var container = CreateContainer(targets);
// Act
// run this two times - one for child (2 results) and grandchild (3 results)
var result1 = container.Resolve <IEnumerable <Action <BaseClassChild, List <string> > > >();
var result2 = container.Resolve <IEnumerable <Action <BaseClassGrandchild, List <string> > > >();
foreach (var action in result1)
{
action(input1, output1);
}
foreach (var action in result2)
{
action(input2, output2);
}
// Assert
// CHANGE FOR #59: Ordering is now strictly registration order.
Assert.Equal(new[] { nameof(HandleBase), nameof(HandleChild) }, output1);
Assert.Equal(new[] { nameof(HandleBase), nameof(HandleChild), nameof(HandleGrandchild) }, output2);
}
void HandleGrandchild(BaseClassGrandchild baseClassGrandchild, List <string> output)
{
if (baseClassGrandchild != null)
{
output.Add(nameof(HandleGrandchild));
}
}
