public void GetExtendedTypeDescriptor_InvokeWithParent_ReturnsExpected(object instance, ICustomTypeDescriptor result)
{
var mockParentProvider = new Mock <TypeDescriptionProvider>(MockBehavior.Strict);
mockParentProvider
.Setup(p => p.GetExtendedTypeDescriptor(instance))
.Returns(result)
.Verifiable();
var provider = new SubTypeDescriptionProvider(mockParentProvider.Object);
Assert.Same(result, provider.GetExtendedTypeDescriptor(instance));
mockParentProvider.Verify(p => p.GetExtendedTypeDescriptor(instance), Times.Once());
// Call again.
Assert.Same(result, provider.GetExtendedTypeDescriptor(instance));
mockParentProvider.Verify(p => p.GetExtendedTypeDescriptor(instance), Times.Exactly(2));
}
public void GetExtendedTypeDescriptor_InvokeWithoutParent_ReturnsExpected(object instance)
{
var provider = new SubTypeDescriptionProvider();
CustomTypeDescriptor result1 = Assert.IsAssignableFrom <CustomTypeDescriptor>(provider.GetExtendedTypeDescriptor(instance));
Assert.Empty(result1.GetProperties());
// Call again.
CustomTypeDescriptor result2 = Assert.IsAssignableFrom <CustomTypeDescriptor>(provider.GetExtendedTypeDescriptor(instance));
Assert.Same(result1, result2);
}