How to unit test a call-back function? (C++ Boost Unit test) -


i want unit test client/server function. client calls server, server calls callback function. like:

void callback() {     boost_success(); // test successful if called }  boost_auto_test_case( connectiontest_clientcallback ) {     callserver(); // server work , call callback()     sleep(20);     boost_fail("server hasn't called callback() within specified time limit."); }

but above won't work because callback() called during of tests. there better way this?

in callback function set variable:

void callback() {     callbackcalled = true; }

and test in test:

boost_auto_test_case( connectiontest_clientcallback ) {     callbackcalled = false;     callserver(); // server work , call callback()     sleep(20);     if (callbackcalled)         boost_success();     else         boost_fail("server hasn't called callback() within specified time limit."); }

edit: better solution suggested kizzx2:

boost_auto_test_case( connectiontest_clientcallback ) {     callbackcalled = false;     callserver(); // server work , call callback()     sleep(20);     boost_check_message(callbackcalled, "server hasn't called callback() within specified time limit."); }

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