Returns true if the control is visible on the current page. There's no way to distinguish between a repeater that is "visible" but has zero items and a repeater that is not visible, so if the repeater has zero items, this method will return false. Similarly, if the repeater doesn't contain any server controls (controls with "runat='server'"), it will also appear to be invisible.
RepeaterTester Class | NUnit.Extensions.Asp.AspTester Namespace