rerun/rerun_cpp/tests/color.cpp at main · TechfaneTechnologies/rerun · GitHub

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#include <catch2/catch_test_macros.hpp>

#include <rerun/components/color.hpp>
#include <rerun/datatypes/rgba32.hpp>

#define TEST_TAG "[color][archetypes]"

template <typename Color>
void test() {
    SECTION("Default constructor") {
        Color c;

        // Not initialized! Access is undefined behavior.
        // Suppress unused warning.
        (void)(c);
    }

    SECTION("Passing RGBA to constructor") {
        Color c(1, 2, 3, 4);
        CHECK(c.r() == 1);
        CHECK(c.g() == 2);
        CHECK(c.b() == 3);
        CHECK(c.a() == 4);
    }

    SECTION("Passing RGB to constructor") {
        Color c(1, 2, 3);
        CHECK(c.r() == 1);
        CHECK(c.g() == 2);
        CHECK(c.b() == 3);
        CHECK(c.a() == 255);
    }

    // Ambiguous overload.
    // SECTION("Passing RGBA to constructor via initializer list") {
    //    Color c({1, 2, 3, 4});
    //    CHECK(c.r() == 1);
    //    CHECK(c.g() == 2);
    //    CHECK(c.b() == 3);
    //    CHECK(c.a() == 4);
    // }

    // This builds on Clang but is an ambiguous overload on GCC.
    // SECTION("Passing RGB to constructor via initializer list") {
    //     Color c({1, 2, 3});
    //     CHECK(c.r() == 1);
    //     CHECK(c.g() == 2);
    //     CHECK(c.b() == 3);
    //     CHECK(c.a() == 255);
    // }

    SECTION("Passing RGBA to constructor via c array") {
        uint8_t rgba[4] = {1, 2, 3, 4};
        Color c(rgba);
        CHECK(c.r() == 1);
        CHECK(c.g() == 2);
        CHECK(c.b() == 3);
        CHECK(c.a() == 4);
    }

    SECTION("Passing RGB to constructor via c array") {
        uint8_t rgb[3] = {1, 2, 3};
        Color c(rgb);
        CHECK(c.r() == 1);
        CHECK(c.g() == 2);
        CHECK(c.b() == 3);
        CHECK(c.a() == 255);
    }
}

TEST_CASE("Construct Color in different ways", TEST_TAG) {
    SECTION("datatypes::Rgba32") {
        test<rerun::datatypes::Rgba32>();
    }
    SECTION("components::Color") {
        test<rerun::components::Color>();
    }
}