public void GetExtenderProviders_InvokeWithoutParent_ReturnsEmpty()
{
var provider = new SubTypeDescriptionProvider();
Assert.Empty(provider.GetExtenderProviders(new object()));
// Call again.
Assert.Empty(provider.GetExtenderProviders(new object()));
}
public void GetExtenderProviders_InvokeWithParent_ReturnsExpected(object instance, IExtenderProvider[] result)
{
var mockParentProvider = new Mock <TypeDescriptionProvider>(MockBehavior.Strict);
mockParentProvider
.Protected()
.Setup <IExtenderProvider[]>("GetExtenderProviders", instance ?? ItExpr.IsNull <object>())
.Returns(result)
.Verifiable();
var provider = new SubTypeDescriptionProvider(mockParentProvider.Object);
Assert.Same(result, provider.GetExtenderProviders(instance));
mockParentProvider.Protected().Verify("GetExtenderProviders", Times.Once(), instance ?? ItExpr.IsNull <object>());
// Call again.
Assert.Same(result, provider.GetExtenderProviders(instance));
mockParentProvider.Protected().Verify("GetExtenderProviders", Times.Exactly(2), instance ?? ItExpr.IsNull <object>());
}
public void GetExtenderProviders_NullInstance_ThrowsArgumentNullException()
{
var provider = new SubTypeDescriptionProvider();
AssertExtensions.Throws <ArgumentNullException>("instance", () => provider.GetExtenderProviders(null));
}
