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Add mutation testing harness

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Port the scratch-copy mutation runner used by libakerror and libakstdlib, covering libakgl source files with sampling, thresholds, JUnit reports, and test timeouts. Add a CMake target and documentation, preserve the intentionally failing character test exclusion, and migrate the sprite test to the renderer backend so mutation baselines are green.

Co-authored-by: Codex (GPT-5) <noreply@openai.com>
This commit is contained in:
Andrew Kesterson
2026-07-29 18:42:09 -04:00
parent 3854b33750
commit dc1bd0a798
5 changed files with 509 additions and 6 deletions
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12
tests/sprite.c
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@@ -10,9 +10,9 @@
#include <akgl/heap.h>
#include <akgl/util.h>
#include <akgl/error.h>
#include <akgl/game.h>
#include <akgl/renderer.h>
SDL_Window *window;
SDL_Renderer *renderer;
akerr_ErrorContext *test_akgl_spritesheet_initialize(void)
{
@@ -37,7 +37,7 @@ akerr_ErrorContext *test_akgl_spritesheet_initialize(void)
"Loaded texture was not the correct size");
snprintf((char *)&tmpstr->data, AKGL_MAX_STRING_LENGTH, "%s%s", SDL_GetBasePath(), "assets/spritesheet.png");
image = IMG_LoadTexture(renderer, (char *)&tmpstr->data);
image = IMG_LoadTexture(renderer->sdl_renderer, (char *)&tmpstr->data);
FAIL_ZERO_BREAK(errctx, image, AKGL_ERR_SDL, "Failed to load comparison image");
CATCH(
@@ -138,7 +138,7 @@ akerr_ErrorContext *test_akgl_sprite_load_json(void)
// Is it using the right spritesheet?
snprintf((char *)&tmpstr->data, AKGL_MAX_STRING_LENGTH, "%s%s", SDL_GetBasePath(), "assets/spritesheet.png");
image = IMG_LoadTexture(renderer, (char *)&tmpstr->data);
image = IMG_LoadTexture(renderer->sdl_renderer, (char *)&tmpstr->data);
FAIL_ZERO_BREAK(errctx, image, AKGL_ERR_SDL, "Failed to load comparison image");
CATCH(
@@ -187,6 +187,7 @@ int main(void)
PREPARE_ERROR(errctx);
ATTEMPT {
renderer = &_akgl_renderer;
SDL_SetAppMetadata("SDL3-GameTest", "0.1", "net.aklabs.sdl3-gametest");
@@ -194,9 +195,10 @@ int main(void)
FAIL_BREAK(errctx, AKGL_ERR_SDL, "Couldn't initialize SDL: %s", SDL_GetError());
}
if (!SDL_CreateWindowAndRenderer("net/aklabs/libakgl/test_sprite", 640, 480, 0, &window, &renderer)) {
if (!SDL_CreateWindowAndRenderer("net/aklabs/libakgl/test_sprite", 640, 480, 0, &window, &renderer->sdl_renderer)) {
FAIL_BREAK(errctx, AKGL_ERR_SDL, "Couldn't create window/renderer: %s", SDL_GetError());
}
renderer->draw_texture = &akgl_render_2d_draw_texture;
CATCH(errctx, akgl_heap_init());
CATCH(errctx, akgl_registry_init_sprite());