刚开始使用Rhino Mocks并且我有一个非常简单的问题,如何使用设置属性的void来模拟一个类?
class SomeClass : ISomeClass
{
private bool _someArg;
public bool SomeProp { get; set; }
public SomeClass(bool someArg)
{
_someArg = someArg;
}
public void SomeMethod()
{
//do some file,wcf, db operation here with _someArg
SomeProp = true/false;
}
}
显然,这是一个非常人为的例子,谢谢。
答案 0 :(得分:6)
在您的示例中,您不需要RhinoMocks,因为您显然正在测试被测试类的功能。简单的单元测试将改为:
[Test]
public void SomeTest()
{
var sc = new SomeClass();
// Instantiate SomeClass as sc object
sc.SomeMethod();
// Call SomeMethod in the sc object.
Assert.That(sc.SomeProp, Is.True );
// Assert that the property is true...
// or change to Is.False if that's what you're after...
}
当你有一个依赖于其他类的类时,测试mocks会更有趣。在你的例子中,你提到:
//使用_someArg
执行一些文件,wcf,db操作
即。你希望其他一些类设置SomeClass
的属性,这对mocktest更有意义。例如:
public class MyClass {
ISomeClass _sc;
public MyClass(ISomeClass sc) {
_sc = sc;
}
public MyMethod() {
sc.SomeProp = true;
}
}
所需的测试将是这样的:
[Test]
public void MyMethod_ShouldSetSomeClassPropToTrue()
{
MockRepository mocks = new MockRepository();
ISomeClass someClass = mocks.StrictMock<ISomeClass>();
MyClass classUnderTest = new MyClass(someClass);
someClass.SomeProp = true;
LastCall.IgnoreArguments();
// Expect the property be set with true.
mocks.ReplayAll();
classUndertest.MyMethod();
// Run the method under test.
mocks.VerifyAll();
}
答案 1 :(得分:3)
取决于您在模拟对象中保持多少保真度。做到这一点的简单方法是不要担心它,并写出一些愚蠢的期望陈述。
[Test]
public void SomeTest()
{
MockRepository mocks = new MockRepository();
ISomeClass mockSomeClass = mocks.StrictMock<ISomeClass>();
using(mocks.Record())
{
using(mocks.Ordered())
{
Expect.Call(MockSomeClass.SomeProp).Return(false);
Expect.Call(delegate{MockSomeClass.SomeMethod();});
Expect.Call(MockSomeClass.SomeProp).Return(true);
}
}
}
如果你想要的东西更像真实物体而没有一组有序的反应,你必须在期望中使用do方法设置委托。
delegate bool propDelegate();
delegate void methodDelegate();
private bool m_MockPropValue = false;
[Test]
public void SomeTest()
{
MockRepository mocks = new MockRepository();
ISomeClass mockSomeClass = mocks.StrictMock<ISomeClass>();
using(mocks.Record())
{
SetupResult.For(MockSomeClass.SomeProp).Do(new propDelegate(delegate
{
return this.m_MockPropValue;
}));
Expect.Call(delegate{MockSomeClass.SomeMethod();}).Do(new methodDelegate(delegate
{
this.m_MockPropValue = true;
}));
}
}
答案 2 :(得分:0)
当您使用SetupResult.For
或Expect.Call
准备某些内容时,您需要确保它们虚拟,否则RhinoMocks将无法自行实施。
否则,只需设置结果并按照 Scott Pedersen 显示
进行预期调用答案 3 :(得分:0)
从问题中你要测试的对象是什么并不完全清楚 - 如果你只想检查SomeClass.SomeMethod()设置一个属性然后你不需要模拟,因为你可以做一个简单的基于状态的测试:
[TestMethod]
public void SomeMethodTest()
{
SomeClass s = new SomeClass();
s.SomeMethod();
Assert.AreEqual(expectedValue, s.SomeProp);
}
或者,如果SomeClass是某个其他类的依赖项,并且您想测试该类与SomeClass之间的交互,那么您在使用RhinoMock的测试的“Record”部分期间设置方法调用的期望,像这样:
[TestMethod]
public void CheckInteractionWithSomeClass()
{
MockRepository mocks = new MockRepository();
ISomeClass someClass = mocks.StrictMock<ISomeClass>();
using (mocks.Record())
{
//record expection that someClass.SomeMethod will be called...
someClass.SomeMethod();
}
using (mocks.Playback())
{
//setup class under test - ISomeClass is injected through the constructor here...
ClassUnderTest o = new ClassUnderTest(someClass);
o.MethodOnClassUnderTestThatShouldCallSomeClass.SomeMethod();
//any other assertions...
}
}