Googletest Mocking (gMock) Framework

Overview

Google's framework for writing and using C++ mock classes. It can help you derive better designs of your system and write better tests.

It is inspired by:

• jMock
• EasyMock
• Hamcrest

It is designed with C++'s specifics in mind.

gMock:

• Provides a declarative syntax for defining mocks.
• Can define partial (hybrid) mocks, which are a cross of real and mock

objects.

• Handles functions of arbitrary types and overloaded functions.
• Comes with a rich set of matchers for validating function arguments.
• Uses an intuitive syntax for controlling the behavior of a mock.
• Does automatic verification of expectations (no record-and-replay needed).
• Allows arbitrary (partial) ordering constraints on function calls to be

expressed.

• Lets a user extend it by defining new matchers and actions.
• Does not use exceptions.
• Is easy to learn and use.

Details and examples can be found here:

• gMock for Dummies
• Legacy gMock FAQ
• gMock Cookbook
• gMock Cheat Sheet

GoogleMock is a part of GoogleTest C++ testing framework and a subject to the same requirements.