Function captureBytes

tests/fl/chipsets/hd108.cpp:85–127

/// Returns an owned vector to avoid lifetime issues
template<int DATA_PIN, fl::u8 CLOCK_PIN, EOrder RGB_ORDER>
fl::vector<u8> captureBytes(const CRGB* leds, int num_leds, u8 brightness) {
    // CRITICAL: Ensure complete isolation between tests
    // Clear all previous strip data and reset tracking state
    ActiveStripData& stripData = ActiveStripData::Instance();
    stripData.onBeginFrame();  // Clears mStripMap
    ActiveStripTracker::resetForTesting();

    // Create ColorAdjustment with simplified setup
    // Since HD108Controller uses loadAndScaleRGB(), we just need to set up brightness
    ColorAdjustment adjustment;
    adjustment.premixed = CRGB(255, 255, 255);  // No color correction - use raw pixel values
    #if FASTLED_HD_COLOR_MIXING
    adjustment.color = CRGB(255, 255, 255);      // No color correction
    adjustment.brightness = brightness;           // Set brightness for HD108
    #endif

    // Create PixelController with the LED data
    PixelController<RGB_ORDER> pixels(leds, num_leds, adjustment, DISABLE_DITHER);

    // Create test controller and show pixels directly
    // Each unique DATA_PIN creates a distinct controller type for isolation
    HD108TestController<DATA_PIN, CLOCK_PIN, RGB_ORDER> controller;
    controller.init();
    controller.showPixels(pixels);

    // Trigger the driver event that pushes data to ActiveStripData
    fl::EngineEvents::onEndShowLeds();

    // Get the captured data - should be exactly one strip after onBeginFrame() + showPixels()
    const auto& dataMap = stripData.getData();

    // Ensure exactly one strip is present (test isolation check)
    FL_REQUIRE_MESSAGE(dataMap.size() == 1,
        "Expected exactly 1 strip after capture, got " << dataMap.size());

    // CRITICAL: Return a COPY of the data (owned vector) to avoid lifetime issues
    // The span in dataMap points to the controller's internal buffer (mBytes in StubSPIOutput)
    // which will be destroyed when the controller goes out of scope
    const auto& capturedSpan = dataMap.begin()->second;
    fl::vector<u8> result;
    result.assign(capturedSpan.begin(), capturedSpan.end());
    return result;
}

FL_TEST_CASE("HD108 - Protocol format verification") {
    // Test single LED with full protocol verification: