How to mock/Ignore datacontext object without constructor.

[Kishore]

I have to implement a unit test method that needs to mock datacontextcontainer. Below is the code i have to mock

using (var dcc = new DataEntities.DataContextContainer())            

{

}

How can i mock DataEntities.DataContextContainer(). When ever i use to call this statement i m getting new instance. Can some please help me on this.

[Kamen Ivanov]

Hello Kishore,

Thank you for your interest in JustMock.
Mocking a constructor should be done the same way as any other member or method of a class.

Here is example code where we create one instance and then mock the constructor to always return that value:

var instanceToBeReturned = new DataEntities.DataContextContainer();
Console.WriteLine(instanceToBeReturned.GetHashCode());

Mock.Arrange(() => new DataEntities.DataContextContainer()).Returns(instanceToBeReturned);

var newInstanceThatIsMocked = new DataEntities.DataContextContainer();
Console.WriteLine(newInstanceThatIsMocked.GetHashCode());

If you execute the code you will see that the hash code of both instances is the same.

You might also want to take a look at these examples too:
http://www.telerik.com/blogs/mocking-constructors-with-justmock
and 
http://www.telerik.com/forums/mocking-constructor

Let us know if that helps you in for your scenario.

Regards,
Kamen Ivanov
Telerik by Progress