What are mocks

Defining the Mocks

• Mocks are used to replace an interface

Scenario of use

• Suppose we are using a retrofit service to call a web server. What we do is we call an abstract method of an interface and that calls a real server.
• Now using mocks -> we mock a retrofit client -> then we call mock of retrofit to return the result of the mock

What mocks are not used for

• Mocks are not used for checking the function behaviour and return values of the function.

What mocks are used for

• Mocks are used to check if a function is called or not
• Mocks are used to check how many times a function is called
• Check if the right parameters are passed or not

Summarizing

Mocks are used to check the right function is called with correct parameters and executed an exact number of times