This macro will add a function to the list of expected function calls. If the function is called at the expected time, the provided mock function will be called instead.

EXPECT_MOCK(function, mock [, parameter])
The function that should be called
The mock that will validate parameters and determine return value
An optional value that can be retieved in the mock. Default is 0.

The EXPECT_MOCK macro is used to instruct the framework that a function call to function is expected during the test. If the unit calls function at the right time, the framework will replace the function call with a function call to the mock function.

parameter is an optional parameter for the mock function. If not given, the default value is zero. The parameter can be read in the mock.

The mock will typical implement validation of the parameters, but it can also execute tests.

In order for the mock to validate the parameters, it is important that the mock has the same function prototype as the function it replaces. The return value of mock is passed back to the unit as the return value of function. The unit is unaware, that it is actually calling a mock function.



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