Only if the methods in the concrete class are declared virtual. The two kinds of things that can be mocked with RhinoMocks are:
1) interfaces 2) virtual methods in unsealed classes Steve Bohlen [email protected] http://blog.unhandled-exceptions.com http://twitter.com/sbohlen On Thu, Nov 10, 2011 at 6:10 PM, Laksh <[email protected]> wrote: > correct..but not all the classes in .Net or my custom classes are > sealed. You are saying if the class is not sealed, i can mock it > without having the interface? > > On Nov 10, 3:27 pm, Patrick Steele <[email protected]> wrote: > > Mocking an interface is easier. You can mock the virtual members of a > > non-sealed class. If a class is sealed or the members you want to > > mock are not virtual, you'll have to create a wrapper (possibly in the > > form of an interface) in order to do your mocking. > > > > --- > > Patrick Steelehttp://weblogs.asp.net/psteele > > > > > > > > > > > > > > > > On Thu, Nov 10, 2011 at 3:07 PM, Laksh <[email protected]> wrote: > > > Thanks. > > > I'm new rhino mocks and never used it before..so the questions. > > > One last question. Is it necessary to derive all the classes from some > > > kind of interface? How do we mock .Net classes? > > > for example > > > MockRepository mocks = new MockRepository(); > > > var myClass = mocks.Stub<MyClass>(); > > > var list = mocks.DynamicMock<Array>(); > > > > > On Nov 10, 11:51 am, Patrick Steele <[email protected]> wrote: > > >> Correct. Mocking only works if you control creation of the object. > > > > >> --- > > >> Patrick Steelehttp://weblogs.asp.net/psteele > > > > >> On Thu, Nov 10, 2011 at 12:41 PM, Gavin van der Merwe > > > > >> <[email protected]> wrote: > > >> > I think Patrick is saying that mocking MyClass this way is not > possible. > > >> > You need to structure your class in a de-coupled way ... > > >> > public class ClassThatDoesWork > > >> > { > > >> > private MyClass instance; > > >> > public ClassThatDoesWork(MyClass instance) > > >> > { > > >> > this.instance = instance; > > >> > } > > >> > public void DoWork(someInputParameters) > > >> > { > > >> > // do stuff with mocked instance > > >> > } > > >> > } > > > > >> > On 10 November 2011 17:31, Laksh <[email protected]> wrote: > > > > >> >> Thanks, i'll would do that, and we are using Repository pattern, so > > >> >> its easy change. > > > > >> >> i have a question though. In my scenario the method returns the > > >> >> Package class so the caller of this method knows Package class.so > i'm > > >> >> able to Assert the values. > > >> >> If i have a method which internally creates instance of class, > would > > >> >> it be possible to mock that class. see the example below > > > > >> >> public void DoWork(someInputParameters) > > >> >> { > > >> >> MyClass instance = new MyClass() > > >> >> // do some logic here. > > >> >> // I may use some .Net classes also to perform the logic > > >> >> } > > > > >> >> is it possible to mock MyClass & .Net classes here ? > > > > >> >> On Nov 10, 10:18 am, Patrick Steele <[email protected]> > wrote: > > >> >> > You want to make sure you have a loosely coupled architecture so > you > > >> >> > can do your unit tests in isolation. > > > > >> >> > The Manifest class you originally showed looks like it needs to > get > > >> >> > data from a database (The GetData method). That dependency on a > > >> >> > database should be in a different component. One idea is to > create a > > >> >> > repository interface for accessing the data: > > > > >> >> > interface IDataObjectRepository > > >> >> > { > > >> >> > DataObject GetData(IContext); > > > > >> >> > } > > > > >> >> > Your Manifest class now has a dependency on the > IDataObjectRepository > > >> >> > which can be mocked at test time using Rhino.Mocks. This way you > > >> >> > don't have to have an actual database up and running to execute > your > > >> >> > unit test for BuildManifest(). You don't have to worry about > proper > > >> >> > table structures and things like that. > > > > >> >> > So iyour Manifest class now takes in the repository: > > > > >> >> > public class Manifest : IManifest<Package> > > >> >> > { > > >> >> > private IContext _context = null; > > >> >> > private IDataObjectReposutory _repository = null; > > > > >> >> > public Manifest(IContext context, IDataObjectReposutory > > >> >> > repository) > > >> >> > { > > >> >> > _context = context; > > >> >> > _repository = repository; > > >> >> > } > > > > >> >> > public Package BuildManifest() > > >> >> > { > > >> >> > ... > > >> >> > DataObject data = _repository.GetData(_context); > > >> >> > ... > > >> >> > } > > > > >> >> > } > > > > >> >> > Now you can mock your context and repository and test to make > sure > > >> >> > that your Package gets built properly based on the data returned > by > > >> >> > IDataObjectRepository.GetData(): > > > > >> >> > // arrange > > >> >> > var context = MockRepository.GenerateStub<IContext>(); > > >> >> > var repository = > MockRepository.GenerateStub<IDataObjectRespository>(); > > >> >> > var do = new new DataObject { BatchID = "100", Title="Test" }; > > >> >> > repository.Stub(r => r.GetData(context)).Returns(do); > > > > >> >> > // act > > >> >> > var manifest = new Manifest(context, repository); > > >> >> > var pacakgeManifest = manifest.BuildManifest(); > > > > >> >> > // assert > > >> >> > Assert.AreEqual(do.BatchID, packageManifest.BatchID); > > >> >> > Assert.AreEqual(do.Title, packageManifest.Title); > > >> >> > etc... > > > > >> >> > --- > > >> >> > Patrick Steelehttp://weblogs.asp.net/psteele > > > > >> >> > On Thu, Nov 10, 2011 at 10:39 AM, Laksh <[email protected]> > wrote: > > >> >> > > GetData method gets the data from the database and then I > assign the > > >> >> > > data to Package class hierarchy. > > >> >> > > I'm creating the instance of Package inside the method. So how > Rhino > > >> >> > > will test such things. My question was not only for this > method. In > > >> >> > > general it is very common we create instances of custom > classes, .Net > > >> >> > > classes inside the method. (Basically local variables). In > such case > > >> >> > > how do test the method using Rhino? > > > > >> >> > > On Nov 9, 10:33 am, Patrick Steele <[email protected]> > wrote: > > >> >> > >> What does GetData do? You probably need to stub that out, but > > >> >> > >> without > > >> >> > >> knowing what it does, I can't say for sure. > > > > >> >> > >> --- > > >> >> > >> Patrick Steelehttp://weblogs.asp.net/psteele > > > > >> >> > >> On Wed, Nov 9, 2011 at 11:20 AM, Laksh <[email protected]> > wrote: > > >> >> > >> > I have the following method. I'm creating a instance of > Package > > >> >> > >> > class > > >> >> > >> > inside the method, setting some of its proeprties and then > > >> >> > >> > returning > > >> >> > >> > it. How do i unit test this method using Rhino? > > > > >> >> > >> > public class Manifest : IManifest<Package> > > >> >> > >> > { > > >> >> > >> > private IContext _context = null; > > > > >> >> > >> > publicManifest(IContext context) > > >> >> > >> > { > > > > >> >> > >> > _context = context; > > >> >> > >> > } > > > > >> >> > >> > public Package BuildManifest() > > >> >> > >> > { > > >> >> > >> > // Data object is class which holds the data from > > >> >> > >> > datasource. > > >> >> > >> > DataObject data = GetData(_context); > > > > >> >> > >> > Package package = new Package(); > > >> >> > >> > package.BatchID = data.BatchId; > > >> >> > >> > package.Title = data.Title; > > >> >> > >> > package.Name = data.Name; > > >> >> > >> > package.City = data.City; > > > > >> >> > >> > IList<PackageDocument> documents = new > > >> >> > >> > List<PackageDocument>(); > > >> >> > >> > foreach (Document document in > data.ConvertedDocuments) > > >> >> > >> > { > > >> >> > >> > PackageDocument packageDocument = new > > >> >> > >> > PackageDocument(); > > >> >> > >> > packageDocument.FileName = > document.DocumentName; > > >> >> > >> > packageDocument.PrintOrder = > > >> >> > >> > document.SequenceNumber.Value; > > >> >> > >> > packageDocument.PaperType = > > >> >> > >> > PackageDocumentPaperType.White; > > >> >> > >> > documents.Add(packageDocument); > > >> >> > >> > } > > >> >> > >> > package.Documents = documents.ToArray(); > > >> >> > >> > return package; > > >> >> > >> > } > > >> >> > >> > } > > > > >> >> > >> > -- > > >> >> > >> > You received this message because you are subscribed to the > Google > > >> >> > >> > Groups "Rhino.Mocks" group. > > >> >> > >> > To post to this group, send email to > [email protected]. > > >> >> > >> > To unsubscribe from this group, send email to > > >> >> > >> > [email protected]. > > >> >> > >> > For more options, visit this group > > >> >> > >> > athttp://groups.google.com/group/rhinomocks?hl=en. > > > > >> >> > > -- > > >> >> > > You received this message because you are subscribed to the > Google > > >> >> > > Groups "Rhino.Mocks" group. > > >> >> > > To post to this group, send email to > [email protected]. > > >> >> > > To unsubscribe from this group, send email to > > >> >> > > [email protected]. > > >> >> > > For more options, visit this group > > >> >> > > athttp://groups.google.com/group/rhinomocks?hl=en. > > > > >> >> -- > > >> >> You received this message because you are subscribed to the Google > Groups > > >> >> "Rhino.Mocks" group. > > >> >> To post to this group, send email to [email protected]. > > >> >> To unsubscribe from this group, send email to > > >> >> [email protected]. > > >> >> For more options, visit this group at > > >> >>http://groups.google.com/group/rhinomocks?hl=en. > > > > >> > -- > > >> > You received this message because you are subscribed to the Google > Groups > > >> > "Rhino.Mocks" group. > > >> > To post to this group, send email to [email protected]. > > >> > To unsubscribe from this group, send email to > > >> > [email protected]. > > >> > For more options, visit this group at > > >> >http://groups.google.com/group/rhinomocks?hl=en. > > > > > -- > > > You received this message because you are subscribed to the Google > Groups "Rhino.Mocks" group. > > > To post to this group, send email to [email protected]. > > > To unsubscribe from this group, send email to > [email protected]. > > > For more options, visit this group athttp:// > groups.google.com/group/rhinomocks?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "Rhino.Mocks" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/rhinomocks?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Rhino.Mocks" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rhinomocks?hl=en.
