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/*:*
* ggaze — texture cache unit test
*
* Exercises the bounded LRU: capacity cap + eviction, MRU ordering on get,
* replace, and miss. Uses 1x1 GdkMemoryTextures (no display needed).
*
* Copyright (c) 2026 ggaze contributors
* SPDX-License-Identifier: GPL-3.0-or-later
*:*/
#include "texturecache.h"
#include <gdk/gdk.h>
#include <gio/gio.h>
#include <glib.h>
static GdkTexture *
mk_tex(void) {
static const guint8 u_px[4] = {0, 0, 0, 255};
GBytes *p_b = g_bytes_new_static(u_px, 4);
GdkTexture *p_t = gdk_memory_texture_new(1, 1, GDK_MEMORY_R8G8B8A8, p_b, 4);
g_bytes_unref(p_b);
return (p_t);
}
static void
test_cap_and_evict(void) {
TextureCache *p_c = texturecache_new(4);
const char *names[5] = {"a.jpg", "b.jpg", "c.jpg", "d.jpg", "e.jpg"};
GFile *f[5];
GdkTexture *t[5];
for (gint i = 0; i < 5; i++) {
f[i] = g_file_new_for_path(names[i]);
t[i] = mk_tex();
texturecache_put(p_c, f[i], t[i]);
}
g_assert_cmpint(texturecache_get_size(p_c), ==, 4); /* cap 4, 5 put */
g_assert_null(texturecache_get(p_c, f[0])); /* LRU evicted */
g_assert_nonnull(texturecache_get(p_c, f[4])); /* newest kept */
for (gint i = 0; i < 5; i++) {
g_object_unref(f[i]);
g_object_unref(t[i]);
}
texturecache_delete(p_c);
}
static void
test_lru_order(void) {
TextureCache *p_c = texturecache_new(2);
GFile *f1 = g_file_new_for_path("1.jpg");
GFile *f2 = g_file_new_for_path("2.jpg");
GFile *f3 = g_file_new_for_path("3.jpg");
GdkTexture *t1 = mk_tex(), *t2 = mk_tex(), *t3 = mk_tex();
texturecache_put(p_c, f1, t1);
texturecache_put(p_c, f2, t2);
/* Touch f1 -> f2 becomes LRU. */
g_assert_nonnull(texturecache_get(p_c, f1));
texturecache_put(p_c, f3, t3); /* evicts LRU = f2 */
g_assert_null(texturecache_get(p_c, f2));
g_assert_nonnull(texturecache_get(p_c, f1));
g_assert_nonnull(texturecache_get(p_c, f3));
g_object_unref(f1);
g_object_unref(f2);
g_object_unref(f3);
g_object_unref(t1);
g_object_unref(t2);
g_object_unref(t3);
texturecache_delete(p_c);
}
static void
test_replace_and_miss(void) {
TextureCache *p_c = texturecache_new(4);
GFile *f = g_file_new_for_path("x.jpg");
GdkTexture *t1 = mk_tex(), *t2 = mk_tex();
texturecache_put(p_c, f, t1);
g_assert_cmpint(texturecache_get_size(p_c), ==, 1);
texturecache_put(p_c, f, t2); /* replace, no size growth */
g_assert_cmpint(texturecache_get_size(p_c), ==, 1);
g_assert_true(texturecache_get(p_c, f) == t2);
GFile *f_other = g_file_new_for_path("other.jpg");
g_assert_null(texturecache_get(p_c, f_other)); /* miss */
g_object_unref(f);
g_object_unref(f_other);
g_object_unref(t1);
g_object_unref(t2);
texturecache_delete(p_c);
}
int
main(int i_argc, char **c_argv) {
g_test_init(&i_argc, &c_argv, NULL);
g_test_add_func("/texturecache/cap_and_evict", test_cap_and_evict);
g_test_add_func("/texturecache/lru_order", test_lru_order);
g_test_add_func("/texturecache/replace_and_miss", test_replace_and_miss);
return (g_test_run());
}
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