public void ItReturnsTheEntityForTheGivenId()
{
int entityId = 1;
GameDefinition expectedGameDefinition = new GameDefinition() { Id = entityId };
gameDefinitionDbSetMock.Expect(mock => mock.Find(entityId))
.Return(expectedGameDefinition);
GameDefinition actualGameDefinition = dataContext.FindById<GameDefinition>(entityId);
Assert.AreSame(expectedGameDefinition, actualGameDefinition);
}