Function require_throws

tests/unittests/test_audio_chunking.cpp:74–82

}

void require_throws(const std::function<void()> & fn, const std::string & label) {
    bool threw = false;
    try {
        fn();
    } catch (const std::runtime_error &) {
        threw = true;
    }
    engine::test::require(threw, label + " did not throw");
}

void require_chunk_invariants(
    const std::vector<engine::runtime::TimeSpan> & chunks,