This macro will add a function to the list of functions, for to which calls are allowed and always considered valid.

ALLOW(function [, retval])
A function used by the unit. The function can have any prototype.
An optional value that will be returned to the unit. Default is 0.

All function calls to function are considered valid for the duration of the test. If function are not present in unit the default mock will be called. The default mock will return the optional parameter retval. If this parameter is not given, the default mock will return 0.

ALLOW can be used together with the EXPECT macros. If these are used with same function in the same test (or in a test executed from the test), the validation of function calls setup with EXPECT will take precedence until all of the expected function calls has been validated. The macro is valid for the duration of the test. If the test calls other tests, the macro will remain in scope also for these tests. ALLOW on function will override any earlier allow macros on that function.



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