The Full Form of MOCK is Multiple option checking.

Multiple choice (MC), objective response, or MCQ (for Multiple Choice Question) is a form of an objective assessment in which respondents are asked to select only correct answers from the choices offered as a list. The multiple choice format is most frequently used in educational testing, in market research, and in elections, when a person chooses between multiple candidates, parties, or policies.

The Full Form of MOCK is Google C++ Mocking Framework

When you write a prototype or test, often it’s not feasible or wise to rely on real objects entirely. A mock object implements the same interface as a real object (so it can be used as one), but lets you specify at run time how it will be used and what it should do (which methods will be called? in which order? how many times? with what arguments? what will they return? etc).

Note: It is easy to confuse the term fake objects with mock objects. Fakes and mocks actually mean very different things in the Test-Driven Development (TDD) community:

• Fake objects have working implementations, but usually take some shortcut (perhaps to make the operations less expensive), which makes them not suitable for production. An in-memory file system would be an example of a fake.
• Mocks are objects pre-programmed with expectations, which form a specification of the calls they are expected to receive.

If all this seems too abstract for you, don’t worry – the most important thing to remember is that a mock allows you to check the interaction between itself and code that uses it. The difference between fakes and mocks will become much clearer once you start to use mocks.

Google C++ Mocking Framework (or Google Mock for short) is a library (sometimes we also call it a “framework” to make it sound cool) for creating mock classes and using them. It does to C++ what jMock and EasyMock do to Java.

Using Google Mock involves three basic steps:

1. Use some simple macros to describe the interface you want to mock, and they will expand to the implementation of your mock class;
2. Create some mock objects and specify its expectations and behavior using an intuitive syntax;
3. Exercise code that uses the mock objects. Google Mock will catch any violation of the expectations as soon as it arises.