public void GetTypeDescriptor_NullInstanceWithParent_ThrowsArgumentNullException()
{
var mockParentProvider = new Mock <TypeDescriptionProvider>(MockBehavior.Strict);
var provider = new SubTypeDescriptionProvider(mockParentProvider.Object);
AssertExtensions.Throws <ArgumentNullException>("instance", () => provider.GetTypeDescriptor((object)null));
}
public void GetTypeDescriptor_InvokeTypeObjectWithParent_ReturnsExpected(Type objectType, object instance, ICustomTypeDescriptor result)
{
var mockParentProvider = new Mock <TypeDescriptionProvider>(MockBehavior.Strict);
mockParentProvider
.Setup(p => p.GetTypeDescriptor(objectType, instance))
.Returns(result)
.Verifiable();
var provider = new SubTypeDescriptionProvider(mockParentProvider.Object);
Assert.Same(result, provider.GetTypeDescriptor(objectType, instance));
mockParentProvider.Verify(p => p.GetTypeDescriptor(objectType, instance), Times.Once());
// Call again.
Assert.Same(result, provider.GetTypeDescriptor(objectType, instance));
mockParentProvider.Verify(p => p.GetTypeDescriptor(objectType, instance), Times.Exactly(2));
}
public void GetTypeDescriptor_NullInstance_ThrowsArgumentNullException()
{
var provider = new SubTypeDescriptionProvider();
AssertExtensions.Throws <ArgumentNullException>("instance", () => provider.GetTypeDescriptor((object)null));
}
public void GetTypeDescriptor_InvokeTypeObjectWithoutParent_ReturnsExpected(Type objectType, object instance)
{
var provider = new SubTypeDescriptionProvider();
CustomTypeDescriptor result1 = Assert.IsAssignableFrom <CustomTypeDescriptor>(provider.GetTypeDescriptor(objectType, instance));
Assert.Empty(result1.GetProperties());
// Call again.
CustomTypeDescriptor result2 = Assert.IsAssignableFrom <CustomTypeDescriptor>(provider.GetTypeDescriptor(objectType, instance));
Assert.Same(result1, result2);
}
