TestNG + JMockit - @dataProvider parameters + local @mocked abstract classes / interfaces

DatabaseTest.java

/**
 * see Boeffi's tutorial: http://boeffi.net/tutorials/local-mock-variables-ein-dritter-weg-in-jmockit/
 * 
 * useful for abstract classes / interfaces (shorter than implementing all methods for a "dummy" instance which is dynamically partially mocked afterwards; cleaner than static partial mocking)
 * take a look at dynamic partial mocking for mocking concrete classes: 
 * http ://jmockit.googlecode.com/svn/trunk/www/tutorial/BehaviorBasedTesting.html#dynamicPartial
 */
public final class DatabaseTest {
    public interface IUser {}
    public interface IPassword {}
    public interface IDatabase {
        public boolean login(IUser user, IPassword pwd);
    }

    @DataProvider(name = "loginTestData")
    public Object[][] loginTestData() {
        return new Object[][] {{ 
            new IUser(){}, new IPassword(){} 
        },{ 
            new IUser(){}, new IPassword(){} 
        }};
    }

    private IDatabase createDatabaseMock() {
        return new NonStrictExpectations() {
            @Injectable IDatabase mockedDatabase;
        }.mockedDatabase;
    }

    @Test(dataProvider = "loginTestData")
    public void testLogin(IUser user, IPassword password) {
        final IDatabase mockedDatabase = createDatabaseMock();
        new NonStrictExpectations() {{
            mockedDatabase.login((IUser) any, (IPassword) any);  result = true;
        }}; 

        assert mockedDatabase.login(user, password) : "Login failed!";
    }
}