How do mocking frameworks work

So if you see:. So you need a stand-in. You can make a fake class just for the test, but that's sort of heavy. Mock frameworks are a shortcut. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. How do mock frameworks work? Ask Question. Asked 11 years, 9 months ago. Active 11 years, 9 months ago.

Viewed 7k times. If I was to write a mocking library, how would this work in other words, how do "they work? MethodReturnInt 3, " abc".

MethodReturnInt 3, "xyz". WillReturn 50 ; Assert. AreEqual 10, fake. MethodReturnInt 3, "abc" ; Assert. AreEqual 50, fake. GurdeepS GurdeepS Add a comment. Active Oldest Votes. MethodReturnInt 3, "abc". AreEqual 10, testClass. Even when you feel good that the code is interacting with external program or different system components, the tests can cannot be counted on. With mock, they interact with the code as interfaces, meaning that you must write a fully-interface compliant test.

When this is done properly, the code will not be able to tell the difference between the mock and the actual object. So, should you start mocking frameworks for testing? The answer to that is totally up to you.

It matters what you are testing and how in depth of an interaction you are looking to get. Mindfire Technology loves looking at different ways to make writing and testing code more efficiently.

Ask us what cool new tech we are working on, and we will answer! Ever feel that everyone around you is just that much smarter? Feel nervous at work? Who knew that me writing about impostor syndrome would be my first ever blog post? No need to refactor code under test to use a wrapper, DI, etc; simply mock whatever you need to be mocked.

How do Java mocking frameworks work? Asked 2 Months ago Answers: 5 Viewed 9 times. This is NOT a question about which is the best framework, etc. I will speak of the framework that I use jmock , but others do something very similar. Is it done in runtime or generates a file? Mock objects are pretty dumb. You specify the behavior that you expect of them. Usually the pattern is: Acquire mock factory called Mockery in jmock out of thin air with specific no-args constructor. Create required mock objects.

Setup expectation on mock objects Call the method you are testing, passing mocks instead of real objects If your method returns some values, check expected value with regular assertXXX methods.

If the node is not set to be cached at all, the cacheHint is irrelevant. Should calling setCache actually improve performance i. Francesco Baruchelli. Only authorized users can answer the question. Please sign in first, or register a free account.