1 files changed, 83 insertions, 0 deletions
diff --git a/fluent-bit/tests/internal/metrics.c b/fluent-bit/tests/internal/metrics.c
new file mode 100644
index 00000000..08f8bc70
--- /dev/null
+++ b/fluent-bit/tests/internal/metrics.c
@@ -0,0 +1,83 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+#include <fluent-bit/flb_info.h>
+#include <fluent-bit/flb_mem.h>
+#include <fluent-bit/flb_error.h>
+#include <fluent-bit/flb_metrics.h>
+
+#include "flb_tests_internal.h"
+
+static void test_create_usage()
+{
+    int ret;
+    int id_1;
+    int id_2;
+    int id_3;
+    struct flb_metric *m;
+    struct flb_metrics *ctx;
+
+    /* Create and destroy */
+    ctx = flb_metrics_create("metrics");
+    TEST_CHECK(ctx != NULL);
+    ret = flb_metrics_destroy(ctx);
+    TEST_CHECK(ret == 0);
+
+    /* Register one metric */
+    ctx = flb_metrics_create("metrics");
+    id_1 = flb_metrics_add(-1, "sample", ctx);
+    TEST_CHECK(id_1 == 0);
+    ret = flb_metrics_destroy(ctx);
+    TEST_CHECK(ret == 1);
+
+    /* Duplicate metric ID, it should fail */
+    ctx = flb_metrics_create("metrics");
+    id_1 = flb_metrics_add(-1, "sample 1", ctx);
+    id_2 = flb_metrics_add(0, "sample 2", ctx);
+    TEST_CHECK(id_2 == -1);
+    ret = flb_metrics_destroy(ctx);
+    TEST_CHECK(ret == 1);
+
+    /* Auto ID  */
+    ctx = flb_metrics_create("ctx");
+    id_1 = flb_metrics_add(-1, "sample 1", ctx);
+    id_2 = flb_metrics_add(-1, "sample 2", ctx);
+    id_3 = flb_metrics_add(-1, "sample 3", ctx);
+    TEST_CHECK(id_1 == 0);
+    TEST_CHECK(id_2 == 1);
+    TEST_CHECK(id_3 == 2);
+    ret = flb_metrics_destroy(ctx);
+    TEST_CHECK(ret == 3);
+
+    /* Update values */
+    ctx = flb_metrics_create("ctx");
+    id_1 = flb_metrics_add(-1, "sample 1", ctx);
+    id_2 = flb_metrics_add(-1, "sample 2", ctx);
+    id_3 = flb_metrics_add(5, "sample 3", ctx);
+    TEST_CHECK(id_1 == 0);
+    TEST_CHECK(id_2 == 1);
+    TEST_CHECK(id_3 == 5);
+
+    ret = flb_metrics_sum(id_1, 2001, ctx);
+    TEST_CHECK(ret == 0);
+
+    ret = flb_metrics_sum(id_2, 2017, ctx);
+    TEST_CHECK(ret == 0);
+
+    ret = flb_metrics_sum(1234, 0, ctx);
+    TEST_CHECK(ret == -1);
+
+    ret = flb_metrics_sum(id_3, 1, ctx);
+    TEST_CHECK(ret == 0);
+
+    m = flb_metrics_get_id(id_3, ctx);
+    TEST_CHECK(m != NULL);
+    TEST_CHECK(m->val == 1);
+
+    ret = flb_metrics_destroy(ctx);
+    TEST_CHECK(ret == 3);
+}
+
+TEST_LIST = {
+    { "create_usage", test_create_usage},
+    { 0 }
+};