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-rw-r--r--src/tests/cache.c215
1 files changed, 215 insertions, 0 deletions
diff --git a/src/tests/cache.c b/src/tests/cache.c
new file mode 100644
index 0000000..667435d
--- /dev/null
+++ b/src/tests/cache.c
@@ -0,0 +1,215 @@
+#include "tests.h"
+
+#include <libplacebo/cache.h>
+
+// Returns "foo" for even keys, "bar" for odd
+static pl_cache_obj lookup_foobar(void *priv, uint64_t key)
+{
+ return (pl_cache_obj) {
+ .key = 0xFFFF, // test key sanity
+ .data = (key & 1) ? "bar" : "foo",
+ .size = 3,
+ };
+}
+
+static void update_count(void *priv, pl_cache_obj obj)
+{
+ int *count = priv;
+ *count += obj.size ? 1 : -1;
+}
+
+enum {
+ KEY1 = 0x9c65575f419288f5,
+ KEY2 = 0x92da969be9b88086,
+ KEY3 = 0x7fcb62540b00bc8b,
+ KEY4 = 0x46c60ec11af9dde3,
+ KEY5 = 0xcb6760b98ece2477,
+ KEY6 = 0xf37dc72b7f9e5c88,
+ KEY7 = 0x30c18c962d82e5f5,
+};
+
+int main()
+{
+ pl_log log = pl_test_logger();
+ pl_cache test = pl_cache_create(pl_cache_params(
+ .log = log,
+ .max_object_size = 16,
+ .max_total_size = 32,
+ ));
+
+ pl_cache_obj obj1 = { .key = KEY1, .data = "abc", .size = 3 };
+ pl_cache_obj obj2 = { .key = KEY2, .data = "de", .size = 2 };
+ pl_cache_obj obj3 = { .key = KEY3, .data = "xyzw", .size = 4 };
+
+ REQUIRE(pl_cache_try_set(test, &obj1));
+ REQUIRE(pl_cache_try_set(test, &obj2));
+ REQUIRE(pl_cache_try_set(test, &obj3));
+ REQUIRE_CMP(pl_cache_size(test), ==, 9, "zu");
+ REQUIRE_CMP(pl_cache_objects(test), ==, 3, "d");
+ REQUIRE(pl_cache_try_set(test, &obj2)); // delete KEY2
+ REQUIRE_CMP(pl_cache_size(test), ==, 7, "zu");
+ REQUIRE_CMP(pl_cache_objects(test), ==, 2, "d");
+
+ REQUIRE(pl_cache_get(test, &obj1));
+ REQUIRE(!pl_cache_get(test, &obj2));
+ REQUIRE(pl_cache_get(test, &obj3));
+ REQUIRE_CMP(pl_cache_size(test), ==, 0, "zu");
+ REQUIRE_CMP(pl_cache_objects(test), ==, 0, "d");
+ REQUIRE_MEMEQ(obj1.data, "abc", 3);
+ REQUIRE_MEMEQ(obj3.data, "xyzw", 4);
+
+ // Re-insert removed objects (in reversed order)
+ REQUIRE(pl_cache_try_set(test, &obj3));
+ REQUIRE(pl_cache_try_set(test, &obj1));
+ REQUIRE_CMP(pl_cache_size(test), ==, 7, "zu");
+ REQUIRE_CMP(pl_cache_objects(test), ==, 2, "d");
+
+ uint8_t ref[72];
+ memset(ref, 0xbe, sizeof(ref));
+ uint8_t *refp = ref;
+
+#define PAD_ALIGN(x) PL_ALIGN2(x, sizeof(uint32_t))
+#define W(type, ...) \
+ do { \
+ size_t sz = sizeof((type){__VA_ARGS__}); \
+ pl_assert(ref + sizeof(ref) - refp >= sz); \
+ memcpy(refp, &(type){__VA_ARGS__}, sz); \
+ refp += sz; \
+ size_t pad_sz = PAD_ALIGN(sz) - sz; \
+ pl_assert(ref + sizeof(ref) - refp >= pad_sz); \
+ memcpy(refp, &(char[PAD_ALIGN(1)]){0}, pad_sz); \
+ refp += pad_sz; \
+ } while (0)
+
+ W(char[], 'p', 'l', '_', 'c', 'a', 'c', 'h', 'e'); // cache magic
+ W(uint32_t, 1); // cache version
+ W(uint32_t, 2); // number of objects
+
+ // object 3
+ W(uint64_t, KEY3); // key
+ W(uint64_t, 4); // size
+#ifdef PL_HAVE_XXHASH
+ W(uint64_t, 0xd43612ef3fbee8be); // hash
+#else
+ W(uint64_t, 0xec18884e5e471117); // hash
+#endif
+ W(char[], 'x', 'y', 'z', 'w'); // data
+
+ // object 1
+ W(uint64_t, KEY1); // key
+ W(uint64_t, 3); // size
+#ifdef PL_HAVE_XXHASH
+ W(uint64_t, 0x78af5f94892f3950); // hash
+#else
+ W(uint64_t, 0x3a204d408a2e2d77); // hash
+#endif
+ W(char[], 'a', 'b', 'c'); // data
+
+#undef W
+#undef PAD_ALIGN
+
+ uint8_t data[100];
+ pl_static_assert(sizeof(data) >= sizeof(ref));
+ REQUIRE_CMP(pl_cache_save(test, data, sizeof(data)), ==, sizeof(ref), "zu");
+ REQUIRE_MEMEQ(data, ref, sizeof(ref));
+
+ pl_cache test2 = pl_cache_create(pl_cache_params( .log = log ));
+ REQUIRE_CMP(pl_cache_load(test2, data, sizeof(data)), ==, 2, "d");
+ REQUIRE_CMP(pl_cache_size(test2), ==, 7, "zu");
+ REQUIRE_CMP(pl_cache_save(test2, NULL, 0), ==, sizeof(ref), "zu");
+ REQUIRE_CMP(pl_cache_save(test2, data, sizeof(data)), ==, sizeof(ref), "zu");
+ REQUIRE_MEMEQ(data, ref, sizeof(ref));
+
+ // Test loading invalid data
+ REQUIRE_CMP(pl_cache_load(test2, ref, 0), <, 0, "d"); // empty file
+ REQUIRE_CMP(pl_cache_load(test2, ref, 5), <, 0, "d"); // truncated header
+ REQUIRE_CMP(pl_cache_load(test2, ref, 64), ==, 1, "d"); // truncated object data
+ data[sizeof(ref) - 2] = 'X'; // corrupt data
+ REQUIRE_CMP(pl_cache_load(test2, data, sizeof(ref)), ==, 1, "d"); // bad checksum
+ pl_cache_destroy(&test2);
+
+ // Inserting too large object should fail
+ uint8_t zero[32] = {0};
+ pl_cache_obj obj4 = { .key = KEY4, .data = zero, .size = 32 };
+ REQUIRE(!pl_cache_try_set(test, &obj4));
+ REQUIRE(!pl_cache_get(test, &obj4));
+ REQUIRE_CMP(pl_cache_size(test), ==, 7, "zu");
+ REQUIRE_CMP(pl_cache_objects(test), ==, 2, "d");
+
+ // Inserting 16-byte object should succeed, and not purge old entries
+ obj4 = (pl_cache_obj) { .key = KEY4, .data = zero, .size = 16 };
+ REQUIRE(pl_cache_try_set(test, &obj4));
+ REQUIRE_CMP(pl_cache_size(test), ==, 23, "zu");
+ REQUIRE_CMP(pl_cache_objects(test), ==, 3, "d");
+ REQUIRE(pl_cache_get(test, &obj1));
+ REQUIRE(pl_cache_get(test, &obj3));
+ REQUIRE(pl_cache_get(test, &obj4));
+ pl_cache_set(test, &obj1);
+ pl_cache_set(test, &obj3);
+ pl_cache_set(test, &obj4);
+ REQUIRE_CMP(pl_cache_size(test), ==, 23, "zu");
+ REQUIRE_CMP(pl_cache_objects(test), ==, 3, "d");
+
+ // Inserting another 10-byte object should purge entry KEY1
+ pl_cache_obj obj5 = { .key = KEY5, .data = zero, .size = 10 };
+ REQUIRE(pl_cache_try_set(test, &obj5));
+ REQUIRE_CMP(pl_cache_size(test), ==, 30, "zu");
+ REQUIRE_CMP(pl_cache_objects(test), ==, 3, "d");
+ REQUIRE(!pl_cache_get(test, &obj1));
+ REQUIRE(pl_cache_get(test, &obj3));
+ REQUIRE(pl_cache_get(test, &obj4));
+ REQUIRE(pl_cache_get(test, &obj5));
+ pl_cache_set(test, &obj3);
+ pl_cache_set(test, &obj4);
+ pl_cache_set(test, &obj5);
+ REQUIRE_CMP(pl_cache_size(test), ==, 30, "zu");
+ REQUIRE_CMP(pl_cache_objects(test), ==, 3, "d");
+
+ // Inserting final 6-byte object should purge entry KEY3
+ pl_cache_obj obj6 = { .key = KEY6, .data = zero, .size = 6 };
+ REQUIRE(pl_cache_try_set(test, &obj6));
+ REQUIRE_CMP(pl_cache_size(test), ==, 32, "zu");
+ REQUIRE_CMP(pl_cache_objects(test), ==, 3, "d");
+ REQUIRE(!pl_cache_get(test, &obj3));
+ REQUIRE(pl_cache_get(test, &obj4));
+ REQUIRE(pl_cache_get(test, &obj5));
+ REQUIRE(pl_cache_get(test, &obj6));
+ REQUIRE_CMP(pl_cache_size(test), ==, 0, "zu");
+ REQUIRE_CMP(pl_cache_objects(test), ==, 0, "d");
+ pl_cache_obj_free(&obj4);
+ pl_cache_obj_free(&obj5);
+ pl_cache_obj_free(&obj6);
+
+ // Test callback API
+ int num_objects = 0;
+ test2 = pl_cache_create(pl_cache_params(
+ .get = lookup_foobar,
+ .set = update_count,
+ .priv = &num_objects,
+ ));
+
+ REQUIRE(pl_cache_get(test2, &obj1));
+ REQUIRE_CMP(obj1.key, ==, KEY1, PRIu64);
+ REQUIRE_CMP(obj1.size, ==, 3, "zu");
+ REQUIRE_MEMEQ(obj1.data, "bar", 3);
+ REQUIRE(pl_cache_get(test2, &obj2));
+ REQUIRE_CMP(obj2.key, ==, KEY2, PRIu64);
+ REQUIRE_CMP(obj2.size, ==, 3, "zu");
+ REQUIRE_MEMEQ(obj2.data, "foo", 3);
+ REQUIRE_CMP(pl_cache_objects(test2), ==, 0, "d");
+ REQUIRE_CMP(num_objects, ==, 0, "d");
+ REQUIRE(pl_cache_try_set(test2, &obj1));
+ REQUIRE(pl_cache_try_set(test2, &obj2));
+ REQUIRE(pl_cache_try_set(test2, &(pl_cache_obj) { .key = KEY7, .data = "abcde", .size = 5 }));
+ REQUIRE_CMP(pl_cache_objects(test2), ==, 3, "d");
+ REQUIRE_CMP(num_objects, ==, 3, "d");
+ REQUIRE(pl_cache_try_set(test2, &obj1));
+ REQUIRE(pl_cache_try_set(test2, &obj2));
+ REQUIRE_CMP(pl_cache_objects(test2), ==, 1, "d");
+ REQUIRE_CMP(num_objects, ==, 1, "d");
+ pl_cache_destroy(&test2);
+
+ pl_cache_destroy(&test);
+ pl_log_destroy(&log);
+ return 0;
+}
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