Method OverrideTest

tests/test_virtual_functions.cpp:359–359

        std::string v;
        A a;
        explicit OverrideTest(const std::string &v) : v{v} {}
        OverrideTest() = default;
        OverrideTest(const OverrideTest &) = delete;
        virtual std::string str_value() { return v; }