Method test_string_for_assign

util/generic/string_ut.h:171–173

        DECLARE_AND_RETURN_BUFFER("one two three one two three");
    }
    const CharT* test_string_for_assign() {
        DECLARE_AND_RETURN_BUFFER("test string for assign");
    }
    const CharT* other_test_string() {
        DECLARE_AND_RETURN_BUFFER("other test string");
    }