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Unit testing an MVC action method with a Cache dependency?


Unit testing an MVC action method with a Cache dependency?

By : user3854223
Date : October 28 2020, 08:00 PM
I hope this helps . The recommended approach is to stub HttpContextBase. Its documentation states
code :


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calling an Asp.net MVC 3 action method that updates a database in a unit testing method

calling an Asp.net MVC 3 action method that updates a database in a unit testing method


By : user2987844
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , I would look into how your db context is getting instantiated. In many cases, it is not desirable for unit tests to cause database round-trips, so people use strategies like mocking to prevent it. It might be something as simple as using a different connection string when you are running a unit test versus running it as an asp.net application.
Unit testing where a dependency has a static configuration method C#

Unit testing where a dependency has a static configuration method C#


By : tirath
Date : March 29 2020, 07:55 AM
I wish this helpful for you You could use a C# "Static Constructor" to achieve your objective.
code :
//This is static as I only ever want one instance
private static log4net.ILog _logger;

static Log4NetLogger() {
    //This is needed to initialise the Log4Net logger
    log4net.Config.XmlConfigurator.Configure();
    _logger = log4net.LogManager.GetLogger(_defaultLogger);
}
ASP.NET MVC - unit testing creation of action method URL's in a business assembly

ASP.NET MVC - unit testing creation of action method URL's in a business assembly


By : Darsh
Date : March 29 2020, 07:55 AM
help you fix your problem Create an abstraction to represent the desired functionality.
For example
code :
public interface IUrlHelper {
    string Action(string actionName, string controllerName);
    //TODO: create other desired members to be exposed
}
public static class UrlHelperFactory {

    public static Func<IUrlHelper> Create = () => {
        throw new NotImplementedException();
    };

}
[TestClass]
public class UrlHelperFactory_Should {

    public class MyTestEntity {
        public string NavigateUrl {
            get {
                var urlHelper = UrlHelperFactory.Create();
                string url = urlHelper.Action("SomeAction", "MyController");
                return url;
            }
        }
    }

    [TestMethod]
    public void Generate_NavigationUrl() {
        //Arrange
        var mockHelper = Mock.Of<IUrlHelper>();
        UrlHelperFactory.Create = () => {
            return mockHelper;
        };
        var expected = "http://my_fake_url";
        Mock.Get(mockHelper)
            .Setup(_ => _.Action(It.IsAny<string>(), It.IsAny<string>()))
            .Returns(expected);

        var sut = new MyTestEntity();

        //Act
        var actual = sut.NavigateUrl;

        //Assert
        actual.Should().NotBeNullOrWhiteSpace()
            .And.Be(expected);
    }
}
UrlHelperFactory.Create = () => {
    var httpContextWrapper = new HttpContextWrapper(HttpContext.Current);
    var urlHelper = new UrlHelper(new RequestContext(httpContextWrapper, RouteTable.Routes.GetRouteData(httpContextWrapper)));
    return new DefaultUrlHelperWrapper(urlHelper);
};
internal class DefaultUrlHelperWrapper : IUrlHelper {
    private UrlHelper urlHelper;

    public DefaultUrlHelperWrapper(UrlHelper urlHelper) {
        this.urlHelper = urlHelper;
    }

    public string Action(string actionName, string controllerName) {
        return urlHelper.Action(actionName, controllerName);
    }

    //TODO: Implement other members
}
Unit testing method which only calls a single dependency method - c#/xUnit/Moq

Unit testing method which only calls a single dependency method - c#/xUnit/Moq


By : coolpat
Date : March 29 2020, 07:55 AM
will help you Ashamed to admit it, but unit testing is still new to me. I have a pretty firm grasp on how to handle things properly. But a situation I find hard to understand the point of is when writing a unit test for a method that simply returns the result of a dependency method invocation. , This is meant to answer your comment
code :
repo
    .Setup(r => r.GetByBar(1))
    .Returns(expectedFoo)
    .Verifiable();
//...code removed for brevity

//act
var result = service.GetByBar(1);

//assert
repo.Verify(); //Verifies that all verifiable expectations have been met.
//...code removed for brevity

//act
var result = service.GetByBar(1);

//assert
Assert.Same(result, expectedFoo);
repo.Verify(r => r.GetByBar(1));
Unit testing a method in which I am doing a dependency injection

Unit testing a method in which I am doing a dependency injection


By : Ashish vani
Date : March 29 2020, 07:55 AM
I wish this helpful for you I have a terminal app with two classes: Todo and TodoApp. The method below lives in TodoApp, I would like to unit test this method and keep it isolated in my test. Since I am doing a dependency injection within the method, how could I mock that? (@todos is an empty array in TodoApp initialize) , I imagine your code looks like this.
code :
class TodoApp
  def initialize 
    @todos = []
  end

  def add(task, day, todo = Todo)
    @todos.push(todo.new(task, day))
    return "#{task} was added to your todos"
  end
end
class TodoApp
  def initialize(todos = [])
    @todos = todos
  end

  def add(task, day, todo = Todo)
    @todos.push(todo.new(task, day))
    return "#{task} was added to your todos"
  end
end
describe TodoApp do
  subject(:app) { described_class.new(todos) }

  let(:todos) { [] }

  describe '#add' do
    subject(:add) { app.add(task, day) }

    let(:task) { 'task' }
    let(:day) { 'day' }

    it 'pushes the item on the list of todos' do
      expect { add }.to change { todos.length }.by(1)
    end
  end
end
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