public void DirectoryController_GetAllFilesTest_ExistPath_ReturnedCorrectView() { mockFileService.Setup(a => a.GetAllFiles(It.IsAny <string>())).Returns(new List <FileSystemInfo>()); mockFileService.Setup(a => a.IsExistPath(It.IsAny <string>())).Returns(true); var result = controller.GetAllFiles("D\\New") as PartialViewResult; Assert.IsNotNull(result); Assert.AreEqual("GetAllFiles", result.ViewName); }