Function make_data

tests/SelfTest/UsageTests/Generators.tests.cpp:229–231

    size_t call_count = 0;
    size_t test_count = 0;
    std::vector<int> make_data() {
        return { 1, 3, 5, 7, 9, 11 };
    }
    std::vector<int> make_data_counted() {
        ++call_count;
        return make_data();