c# - How to pass a Dependency from a Test Project to a Concrete Implementation in DryIoc -


i'm sorry don't have code share because i'm not sure how work.

i have test project called api.tests , i'm writing tests newscontroller within api project. i'm not sure how pass dependency tests api since it's one-way reference.

newscontroller

    private igetnews _getnews;     private iaddnews _addnews;     private iloggingservice _log;      public newscontroller()     {         _getnews = registerdependencies.container.resolve<igetnews>();         _addnews = registerdependencies.container.resolve<iaddnews>();         _log = registerdependencies.container.resolve<iloggingservice>();     }

your current code using service locator anti-pattern. makes controller tightly coupled dependencies , difficult test in isolation. need invert dependencies. (ie: dependency inversion)

refactor controller use explicit dependencies via constructor injection.

public class newscontroller {     private readonly igetnews getnews;     private readonly iaddnews addnews;     private readonly iloggingservice log;      public newscontroller(igetnews getnews, iaddnews addnews, iloggingservice log) {         this.getnews = getnews;         this.addnews = addnews;         this.log = log;     }      //...other code }

for unit testing can mock , inject dependencies subject under test. following example uses mocking framework (moq) mock dependencies , inject them subject under test

public void examplenewscontrollertest() {     //arrange     var getnews = mock.of<igetnews>();     var addnews = mock.of<iaddnews>();     var log = mock.of<iloggingservice>();      var subject = new newscontroller(getnews, addnews, log);      //act     //...exercise method under test     subject.someaction();      //assert     //...assert subject behaves expected.  }

you configure dependencies suit test case/scenario.


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