foo.h

#pragma once
#include "doctest/doctest.h"
#include <type_traits>
 
DOCTEST_CLANG_SUPPRESS_WARNING("-Wmissing-prototypes")
DOCTEST_GCC_SUPPRESS_WARNING("-Wmissing-declarations")
 
#ifdef RETURN_42
#define TEST_LABEL "[return42] "
#else
#define TEST_LABEL "[default] "
#endif
 
inline int bar() {
#ifdef RETURN_42
    return 42;
#else
    return 11;
#endif
}
 
#ifdef DOCTEST_LIBRARY_INCLUDED
 
#ifdef RETURN_42
TEST_CASE(TEST_LABEL "bartest"){
    INFO("Running " TEST_LABEL "bartest"); MESSAGE("");
    CHECK_EQ(42, bar());
}
#endif
 
#ifndef RETURN_42
TEST_CASE(TEST_LABEL "bartest"){
    INFO("Running " TEST_LABEL "bartest"); MESSAGE("");
    CHECK_EQ(11, bar());
}
#endif
 
TEST_CASE(TEST_LABEL "commontest"){
    INFO("Running " TEST_LABEL "commontest"); MESSAGE("");
}
#endif // DOCTEST_LIBRARY_INCLUDED