Mercurial > hg > ucx / file diff

--- a/tests/test_hash_map.c	Fri Aug 15 17:46:47 2025 +0200
+++ b/tests/test_hash_map.c	Sun Aug 17 23:05:16 2025 +0200
@@ -79,6 +79,70 @@
     cx_testing_allocator_destroy(&talloc);
 }
 
+CX_TEST(test_hash_map_emplace) {
+    CxTestingAllocator talloc;
+    cx_testing_allocator_init(&talloc);
+    CxAllocator *allocator = &talloc.base;
+    CX_TEST_DO {
+        CxMap *map = cxHashMapCreate(allocator, 20, 4);
+
+        char *v = cxMapEmplace(map, "key 1");
+        CX_TEST_ASSERT(v != NULL);
+        strcpy(v, "val 1");
+
+        char *tv = cxMapGet(map, "key 1");
+        CX_TEST_ASSERT(tv != NULL);
+        CX_TEST_ASSERT(0 == strcmp(tv, "val 1"));
+
+        v = cxMapEmplace(map, "key 1");
+        CX_TEST_ASSERT(v != NULL);
+        CX_TEST_ASSERT(0 != strcmp(v, "val 1"));
+
+        tv = cxMapGet(map, "key 1");
+        CX_TEST_ASSERT(tv != NULL);
+        CX_TEST_ASSERT(0 != strcmp(tv, "val 1"));
+
+        cxMapFree(map);
+        CX_TEST_ASSERT(cx_testing_allocator_verify(&talloc));
+    }
+    cx_testing_allocator_destroy(&talloc);
+}
+
+CX_TEST(test_hash_map_emplace_pointers) {
+    CxTestingAllocator talloc;
+    cx_testing_allocator_init(&talloc);
+    CxAllocator *allocator = &talloc.base;
+    CX_TEST_DO {
+        CxMap *map = cxHashMapCreate(allocator, CX_STORE_POINTERS, 4);
+        cxDefineAdvancedDestructor(map, cxFree, allocator);
+
+        char *val1 = cxMalloc(allocator, 8);
+        strcpy(val1, "val 1");
+        char *val2 = cxMalloc(allocator, 8);
+        strcpy(val2, "val 2");
+
+        char **v1 = cxMapEmplace(map, "key 1");
+        CX_TEST_ASSERT(v1 != NULL);
+        *v1 = val1;
+
+        char *tv = cxMapGet(map, "key 1");
+        CX_TEST_ASSERT(tv != NULL);
+        CX_TEST_ASSERT(0 == strcmp(tv, "val 1"));
+
+        // this will call the destructor of former v1
+        char **v2 = cxMapEmplace(map, "key 1");
+        CX_TEST_ASSERT(v2 != NULL);
+        *v2 = val2;
+        tv = cxMapGet(map, "key 1");
+        CX_TEST_ASSERT(tv != NULL);
+        CX_TEST_ASSERT(0 == strcmp(tv, "val 2"));
+
+        cxMapFree(map);
+        CX_TEST_ASSERT(cx_testing_allocator_verify(&talloc));
+    }
+    cx_testing_allocator_destroy(&talloc);
+}
+
 CX_TEST(test_hash_map_rehash) {
     CxTestingAllocator talloc;
     cx_testing_allocator_init(&talloc);
@@ -731,6 +795,8 @@
     cx_test_register(suite, test_hash_map_create);
     cx_test_register(suite, test_hash_map_create_store_pointers);
     cx_test_register(suite, test_hash_map_basic_operations);
+    cx_test_register(suite, test_hash_map_emplace);
+    cx_test_register(suite, test_hash_map_emplace_pointers);
     cx_test_register(suite, test_hash_map_rehash);
     cx_test_register(suite, test_hash_map_rehash_not_required);
     cx_test_register(suite, test_hash_map_clear);