DroidDeck/tools/vr/tests/test_xr_tracking.cpp

#include "../src/xr_tracking_file.h"
#include <cassert>
#include <cstdio>

int main() {
    char filename[] = "/tmp/droiddeck-xr-test-XXXXXX";
    int descriptor = mkstemp(filename);
    assert(descriptor >= 0);
    assert(ftruncate(descriptor, sizeof(DroidDeckXrTracking)) == 0);
    auto *writer = static_cast<DroidDeckXrTracking *>(mmap(nullptr, sizeof(DroidDeckXrTracking),
        PROT_READ | PROT_WRITE, MAP_SHARED, descriptor, 0));
    assert(writer != MAP_FAILED);
    {
        XrTrackingFile reader(filename);
        DroidDeckXrTracking packet{};
        assert(!reader.Read(&packet));
        writer->magic = DROIDDECK_XR_MAGIC; writer->version = DROIDDECK_XR_VERSION;
        writer->active = 1; writer->sampled_ns = XrTrackingFile::Now(); writer->period_ns = 13888889;
        writer->eyes[0].width = 1680; writer->eyes[0].height = 1760;
        writer->head.orientation[3] = 1; writer->head.position[1] = 1.6f; writer->head.flags = 15;
        assert(reader.Read(&packet)); assert(XrTrackingFile::Fresh(packet));
        assert(packet.head.position[1] == 1.6f);
        __atomic_store_n(&writer->seq, 1u, __ATOMIC_RELEASE);
        assert(!reader.Read(&packet));
        __atomic_store_n(&writer->seq, 2u, __ATOMIC_RELEASE);
        writer->version++;
        assert(!reader.Read(&packet));
        writer->version = DROIDDECK_XR_VERSION;
        writer->sampled_ns = XrTrackingFile::Now() - 1000000000LL;
        assert(reader.Read(&packet)); assert(!XrTrackingFile::Fresh(packet));
        writer->sampled_ns = XrTrackingFile::Now() + 1000000000LL;
        assert(reader.Read(&packet)); assert(!XrTrackingFile::Fresh(packet));
        writer->sampled_ns = XrTrackingFile::Now(); writer->active = 0;
        assert(reader.Read(&packet)); assert(!XrTrackingFile::Fresh(packet));
        writer->active = 1; writer->eyes[0].width = 9000;
        assert(reader.Read(&packet)); assert(!XrTrackingFile::Fresh(packet));
    }
    munmap(writer, sizeof(DroidDeckXrTracking));
    assert(ftruncate(descriptor, 16) == 0);
    {
        XrTrackingFile reader(filename);
        DroidDeckXrTracking packet{};
        assert(!reader.Read(&packet));
    }
    close(descriptor); unlink(filename);
    std::puts("XR IPC validation passed: valid, seqlock, version, stale, future, inactive, dimensions, truncated");
}