Function FL_TEST_FILE

tests/fl/channels/wave8_spi.cpp:24–365

#include "fl/stl/span.h"  // for span

FL_TEST_FILE(FL_FILEPATH) {

using namespace fl;

// ============================================================================
// Helper: Create ChipsetTiming for WS2812 (standard test case)
// ============================================================================
ChipsetTiming createWS2812ChipsetTiming() {
    ChipsetTiming timing;
    timing.T1 = 800;  // bit1 HIGH time: 800nsyhj
    timing.T2 = 400;  // bit1 LOW time: 400ns
    timing.T3 = 400;  // bit0 HIGH time: 400ns
    return timing;
}

// Note: convertSpiTimingToChipsetTiming() tests are skipped in stub platform tests
// because they require ESP32-specific headers. These will be tested in integration
// tests on real hardware.

// ============================================================================
// Test: Single-Lane Encoding (No Transposition)
// ============================================================================

FL_TEST_CASE("wave8EncodeSingleLane_basic") {
    // Create WS2812 timing and build LUT
    ChipsetTiming chipsetTiming = createWS2812ChipsetTiming();
    Wave8BitExpansionLut lut = buildWave8ExpansionLUT(chipsetTiming);

    // Input: Single byte (0xFF = all bits '1')
    uint8_t input[] = {0xFF};
    uint8_t output[8];  // 1 byte → 8 bytes (1 Wave8Byte)

    size_t written = wave8EncodeSingleLane(
        fl::span<const uint8_t>(input, 1),
        fl::span<uint8_t>(output, 8),
        lut);

    FL_REQUIRE(written == 8);

    // For 0xFF (all bits '1'), all Wave8Bit symbols should use bit1 waveform
    // WS2812 bit1: 2/3 HIGH, 1/3 LOW → wave8 with 8 pulses: ~5-6 HIGH pulses
    // Expected pattern: approximately 0b11111100 to 0b11111110 per Wave8Bit
    // (exact value depends on rounding in buildWave8ExpansionLUT)

    // Verify all 8 Wave8Bit symbols are non-zero (at least some HIGH pulses)
    for (int i = 0; i < 8; i++) {
        FL_REQUIRE(output[i] != 0x00);
    }
}

FL_TEST_CASE("wave8EncodeSingleLane_zero_byte") {
    // Create WS2812 timing and build LUT
    ChipsetTiming chipsetTiming = createWS2812ChipsetTiming();
    Wave8BitExpansionLut lut = buildWave8ExpansionLUT(chipsetTiming);

    // Input: Single byte (0x00 = all bits '0')
    uint8_t input[] = {0x00};
    uint8_t output[8];  // 1 byte → 8 bytes