mirror of
https://github.com/LowganDev/PlayfinPS4.git
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60 lines
1.8 KiB
C++
60 lines
1.8 KiB
C++
#include <doctest/doctest.h>
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#include <cstdlib>
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#include <filesystem>
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#include <string>
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#include "testing/image.hpp"
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using playfin::testing::Image;
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namespace {
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Image solid(int w, int h, std::uint8_t value) {
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Image image;
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image.width = w;
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image.height = h;
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image.rgba.assign(static_cast<std::size_t>(w * h * 4), value);
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return image;
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}
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} // namespace
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TEST_CASE("identical and slightly different images match") {
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const Image a = solid(10, 10, 100);
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Image b = solid(10, 10, 100);
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b.rgba[0] = 106; // within the tolerance of 8
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const auto diff = playfin::testing::diffImages(a, b);
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CHECK(diff.sameSize);
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CHECK(diff.differing == 0);
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CHECK(playfin::testing::imagesMatch(diff));
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}
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TEST_CASE("a changed area or a different size fails") {
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const Image a = solid(100, 100, 0);
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Image b = solid(100, 100, 0);
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for (int i = 0; i < 20; ++i) {
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b.rgba[static_cast<std::size_t>(i * 4)] = 255;
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}
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const auto diff = playfin::testing::diffImages(a, b);
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CHECK(diff.differing == 20);
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CHECK_FALSE(playfin::testing::imagesMatch(diff));
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CHECK_FALSE(playfin::testing::imagesMatch(playfin::testing::diffImages(a, solid(100, 99, 0))));
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}
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TEST_CASE("PNG round trip and missing files") {
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char tmpl[] = "/tmp/playfin-img-XXXXXX";
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REQUIRE(mkdtemp(tmpl) != nullptr);
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const std::string path = std::string(tmpl) + "/a.png";
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Image a = solid(4, 3, 50);
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a.rgba[5] = 200;
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REQUIRE(playfin::testing::writePng(path, a));
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const auto loaded = playfin::testing::loadPng(path);
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REQUIRE(loaded.has_value());
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CHECK(loaded->width == 4);
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CHECK(loaded->height == 3);
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CHECK(loaded->rgba == a.rgba);
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CHECK_FALSE(playfin::testing::loadPng(std::string(tmpl) + "/missing.png").has_value());
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std::filesystem::remove_all(tmpl);
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}
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