Doc: will_return() pushes to a queue, not a stack
The description of will_return()
says: "The will_return()
macro pushes a value onto a stack of mock values."
But it pushes a value to a queue. This example is FIFO: https://git.cryptomilk.org/projects/cmocka.git/tree/example/mock/chef_wrap/waiter_test_wrap.c