public void MainViewModel_AddLanguageHelpPageCommand_LanguageHelpActive()
{
CreateFullExportsAndVm();
//------------Execute Test---------------------------
MainViewModel.AddLanguageHelpPageCommand.Execute(null);
// Assert LanguageHelp is active
var languageHelpUri = FileHelper.GetFullPath(StringResources.Uri_Studio_Language_Reference_Document);
var langHelpCtx = MainViewModel.ActiveItem.WorkSurfaceViewModel as HelpViewModel;
Assert.IsNotNull(langHelpCtx);
// ReSharper disable PossibleNullReferenceException
Assert.IsTrue(langHelpCtx.Uri == languageHelpUri);
// ReSharper restore PossibleNullReferenceException
}