public void HelpTest() { TestPage testPage = new TestPage(); TestIPropertyPageSite testSite = new TestIPropertyPageSite(); TestHelp testHelp = new TestHelp(); testSite.ServiceObjects.Add(typeof(Microsoft.VisualStudio.VSHelp.Help), testHelp); testPage.SetPageSite(testSite); testPage.Help(""); Assert.AreEqual("TestPageHelp", testHelp.KeywordsDisplayed[0]); }