slab metrics unit test: test_metrics_prepend_basic

test/storage/slab_pmem/check_slab_pmem.c

@@ -737,6 +737,43 @@ START_TEST(test_expire_truncated)
 }
 END_TEST
 
+START_TEST(test_freeq)
+{
+#define KEY "key"
+#define VAL "val"
+    struct bstring key, val;
+    item_rstatus_e status;
+    struct item *it;
+
+    test_reset(1);
+
+    key = str2bstr(KEY);
+    val = str2bstr(VAL);
+
+    time_update();
+
+    status = item_reserve(&it, &key, &val, val.len, 0, INT32_MAX);
+    uint8_t id = slab_id(item_ntotal(key.len, val.len, 0));
+    ck_assert_msg(status == ITEM_OK, "item_reserve not OK - return status %d", status);
+    item_insert(it, &key);
+
+    it = item_get(&key);
+    ck_assert_msg(it != NULL, "item_get could not find key %.*s", key.len, key.data);
+
+    ck_assert_msg(item_delete(&key), "item_delete for key %.*s not successful", key.len, key.data);
+
+    test_reset(0);
+
+    struct slabclass *p = &slabclass[id];
+    ck_assert_msg(p->nfree_itemq == 1, "Slabclass %u has %u item(s) in freeq", id, p->nfree_itemq);
+    it = SLIST_FIRST(&p->free_itemq);
+    ck_assert_msg(it->in_freeq == 1, "Item not flagged as in freeq");
+
+#undef KEY
+#undef VAL
+}
+END_TEST
+
 /**
  * Tests check lruq state after restart
  */
@@ -1136,6 +1173,7 @@ START_TEST(test_metrics_append_basic)
 #define KEY "key"
 #define VAL "val"
 #define APPEND "append"
+
     struct bstring key, val, append;
     item_rstatus_e status;
     struct item *it;
@@ -1178,6 +1216,54 @@ START_TEST(test_metrics_append_basic)
 }
 END_TEST
 
+START_TEST(test_metrics_prepend_basic)
+{
+#define KEY "key"
+#define VAL "val"
+#define PREPEND "prepend"
+
+    struct bstring key, val, prepend;
+    item_rstatus_e status;
+    struct item *it;
+
+    test_reset(1);
+
+    key = str2bstr(KEY);
+    val = str2bstr(VAL);
+    prepend = str2bstr(PREPEND);
+
+    time_update();
+    status = item_reserve(&it, &key, &val, val.len, 0, INT32_MAX);
+    ck_assert_msg(status == ITEM_OK, "item_reserve not OK - return status %d", status);
+    item_insert(it, &key);
+
+    it = item_get(&key);
+    ck_assert_msg(it != NULL, "item_get could not find key %.*s", key.len, key.data);
+
+    status = item_annex(it, &key, &prepend, false);
+    ck_assert_msg(status == ITEM_OK, "item_prepend not OK - return status %d", status);
+
+    slab_metrics_st copy = metrics;
+
+    metric_reset((struct metric *)&metrics, METRIC_CARDINALITY(metrics));
+    test_reset(0);
+
+    test_assert_metrics((struct metric *)&copy, (struct metric *)&metrics, METRIC_CARDINALITY(metrics));
+
+    it = item_get(&key);
+    ck_assert_msg(it != NULL, "item_get could not find key %.*s", key.len, key.data);
+    ck_assert_msg(it->is_linked, "item with key %.*s not linked", key.len, key.data);
+    ck_assert_msg(!it->in_freeq, "linked item with key %.*s in freeq", key.len, key.data);
+    ck_assert_msg(it->is_raligned, "item with key %.*s is not raligned", key.len, key.data);
+    ck_assert_int_eq(it->vlen, val.len + prepend.len);
+    ck_assert_int_eq(it->klen, sizeof(KEY) - 1);
+    ck_assert_int_eq(cc_memcmp(item_data(it), PREPEND VAL, val.len + prepend.len), 0);
+#undef KEY
+#undef VAL
+#undef PREPEND
+}
+END_TEST
+
 START_TEST(test_metrics_lruq_rebuild)
 {
 #define NUM_ITEMS 3
@@ -1260,43 +1346,6 @@ START_TEST(test_metrics_lruq_rebuild)
 }
 END_TEST
 
-START_TEST(test_freeq)
-{
-#define KEY "key"
-#define VAL "val"
-    struct bstring key, val;
-    item_rstatus_e status;
-    struct item *it;
-
-    test_reset(1);
-
-    key = str2bstr(KEY);
-    val = str2bstr(VAL);
-
-    time_update();
-
-    status = item_reserve(&it, &key, &val, val.len, 0, INT32_MAX);
-    uint8_t id = slab_id(item_ntotal(key.len, val.len, 0));
-    ck_assert_msg(status == ITEM_OK, "item_reserve not OK - return status %d", status);
-    item_insert(it, &key);
-
-    it = item_get(&key);
-    ck_assert_msg(it != NULL, "item_get could not find key %.*s", key.len, key.data);
-
-    ck_assert_msg(item_delete(&key), "item_delete for key %.*s not successful", key.len, key.data);
-
-    test_reset(0);
-
-    struct slabclass *p = &slabclass[id];
-    ck_assert_msg(p->nfree_itemq == 1, "Slabclass %u has %u item(s) in freeq", id, p->nfree_itemq);
-    it = SLIST_FIRST(&p->free_itemq);
-    ck_assert_msg(it->in_freeq == 1, "Item not flagged as in freeq");
-
-#undef KEY
-#undef VAL
-}
-END_TEST
-
 /*
  * test suite
  */
@@ -1338,6 +1387,7 @@ slab_suite(void)
     tcase_add_test(tc_smetrics, test_metrics_insert_large);
     tcase_add_test(tc_smetrics, test_metrics_reserve_backfill_link);
     tcase_add_test(tc_smetrics, test_metrics_append_basic);
+    tcase_add_test(tc_smetrics, test_metrics_prepend_basic);
     tcase_add_test(tc_smetrics, test_metrics_lruq_rebuild);
 
     return s;