Rhino Mocks約束和字典參數

Question

如何檢查接受字典的函數的參數？

IDictionary<string, string> someDictionary = new Dictionary<string, string> { 
    {"Key1", "Value1"}, 
    {"Key2", "Value2"} 
}; 

Expect.Call(delegate {someService.GetCodes(someDictionary);}).Constraints(...); 

基本上，我想驗證GetCodes的參數與變量「someDictionary」具有相同的值。

我忘了提及正在測試的方法構建字典並將其傳遞給someService.GetCodes（）方法。

public void SomeOtherMethod() { 
    IDictionary<string, string> dict = new Dictionary<string, string> { 
    {"Key 1", "Value 1"}, 
    {"Key 2", "Value 2"} 
    }; 

    someService.GetCodes(dict); // This would pass! 

    IDictionary<string, string> dict2 = new Dictionary<string, string> { 
    {"Key 1", "Value 1a"}, 
    {"Key 2a", "Value 2"} 
    }; 

    someService.GetCodes(dict2); // This would fail! 

} 

所以，我要確保傳遞給GetCodes方法字典包含相同的那些人在Expect.Call specifed ...方法。

另一個用例可能是我可能只是想看看字典的鍵是否包含「鍵1」和「鍵2」，但不關心值......或者其他地方。

Answer 1

// arrange 
IDictionary<string, string> someDictionary = new Dictionary<string, string> { 
    { "Key1", "Value1" }, 
    { "Key2", "Value2" } 
}; 
ISomeService someService = MockRepository.GenerateStub<ISomeService>(); 

// act: someService needs to be the mocked object 
// so invoke the desired method somehow 
// this is usually done through the real subject under test 
someService.GetCodes(someDictionary); 

// assert 
someService.AssertWasCalled(
    x => x.GetCodes(someDictionary) 
); 

---

UPDATE：

這裏是你如何可以斷言的參數值：

someService.AssertWasCalled(
    x => x.GetCodes(
     Arg<IDictionary<string, string>>.Matches(
      dictionary => 
       dictionary["Key1"] == "Value1" && 
       dictionary["Key2"] == "Value2" 
     ) 
    )  
); 

---

UPDATE2：

正如意見建議的@mquander中，以前的斷言可以縮短使用LINQ：

someService.AssertWasCalled(
    x => x.GetCodes(
     Arg<IDictionary<string, string>>.Matches(
      dictionary => 
       dictionary.All(pair => someDictionary[pair.Key] == pair.Value) 
     ) 
    ) 
);