#include "screencast/utils/clock.h"

#include <cassert>
#include <cstdint>

int main() {
    assert(sc::rtp_timestamp_from_ns(0) == 0u);
    assert(sc::rtp_timestamp_from_ns(1'000'000'000ULL) == 90'000u);
    assert(sc::rtp_timestamp_from_ns(500'000'000ULL) == 45'000u);
    assert(sc::rtp_timestamp_from_ns(16'666'667ULL) == 1'500u);

    // A multiple of the wrap period should wrap back to zero.
    // Period in ns = ceil(2^32 * 100_000 / 9) because the helper uses
    // integer floor division (ns * 9 / 100_000).
    constexpr uint64_t period_ns = ((1ULL << 32) * 100'000ULL + 9ULL - 1ULL) / 9ULL;
    static_assert(sc::rtp_timestamp_from_ns(period_ns) == 0u);
    static_assert(sc::rtp_timestamp_from_ns(period_ns + 1'000'000'000ULL) == 90'000u);

    return 0;
}