ASP.NET MVC单元测试Controller时添加上下文的方式

最新推荐文章于 2021-05-17 17:10:22 发布

转载最新推荐文章于 2021-05-17 17:10:22 发布 · 107 阅读

文章标签：

#测试 #c#

本文介绍了如何在ASP.NET MVC中模拟HTTP上下文以测试Controller的行为。通过使用MoQ框架，文章详细展示了如何设置模拟请求及验证控制器是否正确处理了查询字符串和表单数据。

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在ASP.NET MVC中测试Controller时，常常需要在Controller中访问上下文，比方说查询字符串或者form中的内容，而我们测试的时候一般不是在web运行环境下的，所以我们需要做些工作去模拟上下文。

Controller中代码如下

public ActionResult Index()
{
ViewData[ " Message " ] = Request.QueryString[ " lfm " ];

return View();
}

测试写法如下：

代码

[TestMethod]
public void Index()
{
HomeController controller = new HomeController();

var httpContext = new Mock < HttpContextBase > ();
var request = new Mock < HttpRequestBase > ();
NameValueCollection queryString = new NameValueCollection();
queryString.Add( " lfm " , " lfm " );
request.Setup(r => r.QueryString).Returns(queryString);
httpContext.Setup(ht => ht.Request).Returns(request.Object);

ControllerContext controllerContext = new ControllerContext();
controllerContext.HttpContext = httpContext.Object;
controller.ControllerContext = controllerContext;

ViewResult result = controller.Index() as ViewResult;

ViewDataDictionary viewData = result.ViewData;
Assert.AreEqual( " lfm " , viewData[ " Message " ]);
}

这里用到了Mock可以参考：

MoQ(基于.net3.5,c#3.0的mock框架)简单介绍

如果是form稍作修改即可：

public ActionResult About()
{
ViewData[ " Message " ] = Request.Form[ " lfm " ];
return View();
}

测试代码：

代码

[TestMethod]
public void About()
{
// Arrange
HomeController controller = new HomeController();
var httpContext = new Mock < HttpContextBase > ();
var request = new Mock < HttpRequestBase > ();
NameValueCollection queryString = new NameValueCollection();
queryString.Add( " lfm " , " lfm " );
request.Setup(r => r.Form).Returns(queryString);
httpContext.Setup(ht => ht.Request).Returns(request.Object);

ControllerContext controllerContext = new ControllerContext();
controllerContext.HttpContext = httpContext.Object;
controller.ControllerContext = controllerContext;
// Act
ViewResult result = controller.About() as ViewResult;

// Assert
ViewDataDictionary viewData = result.ViewData;
Assert.AreEqual( " lfm " , viewData[ " Message " ]);
}