Function FL_TEST_FILE

tests/fl/stl/not_null.cpp:202–394

#include "fl/stl/type_traits.h"

FL_TEST_FILE(FL_FILEPATH) {

FL_TEST_CASE("not_null - works with CRGB pointer") {
    fl::CRGB pixel(255, 128, 64);
    not_null<fl::CRGB*> ptr(&pixel);

    FL_CHECK(ptr->r == 255);
    FL_CHECK(ptr->g == 128);
    FL_CHECK(ptr->b == 64);
}

FL_TEST_CASE("not_null - array of CRGB pixels") {
    fl::CRGB pixels[3];
    pixels[0] = fl::CRGB(255, 0, 0);    // Red
    pixels[1] = fl::CRGB(0, 255, 0);    // Green
    pixels[2] = fl::CRGB(0, 0, 255);    // Blue

    not_null<fl::CRGB*> ptr(pixels);

    FL_CHECK(ptr[0].r == 255);
    FL_CHECK(ptr[1].g == 255);
    FL_CHECK(ptr[2].b == 255);
}

FL_TEST_CASE("not_null - modify CRGB through pointer") {
    fl::CRGB pixel(0, 0, 0);
    not_null<fl::CRGB*> ptr(&pixel);

    ptr->r = 255;
    ptr->g = 128;
    ptr->b = 64;

    FL_CHECK(pixel.r == 255);
    FL_CHECK(pixel.g == 128);
    FL_CHECK(pixel.b == 64);
}

FL_TEST_CASE("not_null - const CRGB pointer") {
    const fl::CRGB pixel(255, 128, 64);
    not_null<const fl::CRGB*> ptr(&pixel);

    FL_CHECK(ptr->r == 255);
    FL_CHECK(ptr->g == 128);
    FL_CHECK(ptr->b == 64);
}

// ============================================================================
// Edge Case Tests: Function-like usage patterns
// ============================================================================

// Helper function demonstrating typical FastLED usage pattern
static void setPixelsRed(not_null<fl::CRGB*> leds, int count) {
    // No need to check for null - guaranteed by type
    for (int i = 0; i < count; i++) {
        leds[i] = fl::CRGB(255, 0, 0);
    }
}