嘲弄一个NHibernate的ISession带起订量 [英] Mocking an NHibernate ISession with Moq
问题描述
我开始与NHibernate,ASP.NET MVC 2.0和StructureMap一个新的项目,并使用NUnit和起订量进行检测。对于我的每个控制器我有一个单一的公共构造成一个ISession被注入。该应用程序本身工作得很好,但在单元测试方面,我基本上都嘲笑一个ISession为了测试控制器。
当我试图嘲弄的ISession与MOQ我收到以下错误消息:
只有属性访问支持 中间调用
看来,我的问题是希望从框架的createQuery方法的用户列表中,但使用Google发出后,我现在更清楚。
我有两个问题:
1),这是错误的方式来嘲笑依赖注入一个ISession的
2)有没有办法来修改code,以便它可以成功返回我的列表
[测试]
公共无效DummyTest()
{
VAR模拟=新的模拟< ISession的>();
VAR LOC =新的模拟<使用者>();
loc.SetupGet(X => x.ID).Returns(2);
loc.SetupGet(X => x.FirstName).Returns(约翰);
loc.SetupGet(X => x.LastName).Returns(彼得森);
VAR LST =新的List<使用者> {loc.Object};
mock.Setup(框架=> framework.CreateQuery(从用户)名单,其中;。使用者>())返回(LST)。
无功控制=新UsersController中(mock.Object);
VAR的结果= controller.Index()作为的ViewResult;
Assert.IsNotNull(result.ViewData);
}
请注意,我是pretty的肯定,我可以只创建用户的硬codeD列表(而不是嘲讽单个用户并将其添加到列表中),但想我会离开的code,因为我有现在。
此外,这个特殊的控制器的索引动作基本上执行的createQuery调用模仿上面返回所有数据库中的用户。这是一个人为的例子 - 不读任何东西到细节
在此先感谢您的帮助
编辑:在回答下面的评论,我加入的堆栈跟踪的错误。此外,在用户类的所有属性都是虚拟的。
测试用例 Beta.Tests.Unit.Controllers.UserControllerTest.Details_InValidIndex_ReturnsNotFoundView 失败:System.NotSupportedException: 只有属性访问支持 在一个中间调用 建立。不支持的EX pression framework.CreateQuery(从用户)。 在 Moq.Mock.AutoMockPropertiesVisitor.VisitMethodCall(MethodCallEx pression 垫 Moq.Ex pressionVisitor.Visit(出pression EXP)在 Moq.Mock.AutoMockPropertiesVisitor.VisitMethodCall(MethodCallEx pression 垫 Moq.Ex pressionVisitor.Visit(出pression EXP)在 Moq.Mock.AutoMockPropertiesVisitor.SetupMocks(前pression EX pression)在 Moq.Mock.GetInterceptor(LambdaEx pression 拉姆达,模拟模拟)在 Moq.Mock<> c__DisplayClass12
2<设置> b__11() 在Moq.PexProtector.Invoke [T](Func键
1 功能)在 Moq.Mock.Setup1 EX pression)在 Moq.Mock1.Setup%5BTResult%5D%28Ex pression`1 EX pression> T1,TResult 控制器\ UserControllerTest.cs(29,0): 在 Beta.Tests.Unit.Controllers.UserControllerTest.Details_InValidIndex_ReturnsNotFoundView()
下面是解决方案,我想出了这似乎很好地工作。同样,我不测试NHibernate和我没有测试数据库 - 我只是想测试依赖于NHibernate的控制器。与最初的解决方案,这个问题似乎是事实,我是调用一个方法,以及在读的起订量建立呼叫会话的列表成员。我分手了这些呼叫通过打破解成QueryMock和会话模拟(创建查询返回IQUERY对象)。事务模拟也是必要的,因为它是一个依赖(在我的情况)的会议......
[测试]
公共无效DummyTest()
{
VAR用户列表=新的List<使用者>(){新用户(){n = 2,名字=约翰,名字=彼得森}};
VAR sessionMock =新的模拟< ISession的>();
VAR queryMock =新的模拟< IQUERY>();
VAR transactionMock =新的模拟< ITransaction>();
sessionMock.SetupGet(X => x.Transaction).Returns(transactionMock.Object);
sessionMock.Setup(会话=> session.CreateQuery(从用户))将返回(queryMock.Object)。
queryMock.Setup(X => x.List<使用者>())返回(用户列表)。
无功控制=新UsersController中(sessionMock.Object);
VAR的结果= controller.Index()作为的ViewResult;
Assert.IsNotNull(result.ViewData);
}
I am starting a new project with NHibernate, ASP.NET MVC 2.0 and StructureMap and using NUnit and Moq for testing. For each of my controllers I have a single public constructor into which an ISession is being injected. The application itself works just fine, but in terms of unit testing I essentially have to mock an ISession in order to test the controllers.
When I attempt to Mock the ISession with MOQ i get the following error message:
Only property accesses are supported in intermediate invocations
It appears that my problem is expecting List of users from the framework CreateQuery method but after googling the issue I am now clearer.
I have two questions:
1) Is this the WRONG way to mock dependency injection of an ISession
2) Is there a way to modify the code so that it can successfully return my list
[Test]
public void DummyTest()
{
var mock = new Mock<ISession>();
var loc = new Mock<User>();
loc.SetupGet(x => x.ID).Returns(2);
loc.SetupGet(x => x.FirstName).Returns("John");
loc.SetupGet(x => x.LastName).Returns("Peterson");
var lst = new List<User> {loc.Object};
mock.Setup(framework => framework.CreateQuery("from User").List<User>()).Returns(lst);
var controller = new UsersController(mock.Object);
var result = controller.Index() as ViewResult;
Assert.IsNotNull(result.ViewData);
}
Please note, I am pretty sure I could just create a hard-coded list of users (rather than mocking an individual User and adding it to a list) but figured I'd leave the code as I have it right now.
Also, the Index action of this particular controller essentially executes the CreateQuery call mimicked above to return all users in the database. This is a contrived example - don't read anything into the details.
Thanks in advance for your help
Edit: In reply to the below comment, I am adding the stacktrace for the error. Also, all properties on the User class are virtual.
TestCase 'Beta.Tests.Unit.Controllers.UserControllerTest.Details_InValidIndex_ReturnsNotFoundView' failed: System.NotSupportedException : Only property accesses are supported in intermediate invocations on a setup. Unsupported expression framework.CreateQuery("from User"). at Moq.Mock.AutoMockPropertiesVisitor.VisitMethodCall(MethodCallExpression m) at Moq.ExpressionVisitor.Visit(Expression exp) at Moq.Mock.AutoMockPropertiesVisitor.VisitMethodCall(MethodCallExpression m) at Moq.ExpressionVisitor.Visit(Expression exp) at Moq.Mock.AutoMockPropertiesVisitor.SetupMocks(Expression expression) at Moq.Mock.GetInterceptor(LambdaExpression lambda, Mock mock) at Moq.Mock.<>c__DisplayClass12
2.<Setup>b__11() at Moq.PexProtector.Invoke[T](Func
1 function) at Moq.Mock.Setup1 expression) at Moq.Mock1.Setup%5BTResult%5D%28Expression`1 expression">T1,TResult Controllers\UserControllerTest.cs(29,0): at Beta.Tests.Unit.Controllers.UserControllerTest.Details_InValidIndex_ReturnsNotFoundView()
Below is the solution I came up with which seems to work perfectly. Again, I am not testing NHibernate and I am not testing the database - I simply want to test the controllers which depend on NHibernate. The issue with the initial solution appears to be the fact that I was calling a Method as well as reading the List member of the session in the MOQ setup call. I broke up these calls by breaking the solution into a QueryMock and a Session Mock (create query returns an IQuery object). A transaction mock was also necessary as it is a dependency (in my case) of the session...
[Test]
public void DummyTest()
{
var userList = new List<User>() { new User() { ID = 2, FirstName = "John", LastName = "Peterson" } };
var sessionMock = new Mock<ISession>();
var queryMock = new Mock<IQuery>();
var transactionMock = new Mock<ITransaction>();
sessionMock.SetupGet(x => x.Transaction).Returns(transactionMock.Object);
sessionMock.Setup(session => session.CreateQuery("from User")).Returns(queryMock.Object);
queryMock.Setup(x => x.List<User>()).Returns(userList);
var controller = new UsersController(sessionMock.Object);
var result = controller.Index() as ViewResult;
Assert.IsNotNull(result.ViewData);
}
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