From b570622ad9aaaaca548bbc37c8bc95d55db8e2a8 Mon Sep 17 00:00:00 2001
From: Hiroshi Hatake <hiroshi@chronosphere.io>
Date: Thu, 10 Oct 2024 19:50:43 +0900
Subject: [PATCH] in_systemd: test: Add a format test case for duplicated keys

Signed-off-by: Hiroshi Hatake <hiroshi@chronosphere.io>
---
 tests/runtime/CMakeLists.txt |   3 +
 tests/runtime/in_systemd.c   | 114 +++++++++++++++++++++++++++++++++++
 2 files changed, 117 insertions(+)
 create mode 100644 tests/runtime/in_systemd.c

diff --git a/tests/runtime/CMakeLists.txt b/tests/runtime/CMakeLists.txt
index f355294ed9f..13acd35b728 100644
--- a/tests/runtime/CMakeLists.txt
+++ b/tests/runtime/CMakeLists.txt
@@ -58,6 +58,9 @@ if(FLB_OUT_LIB)
   FLB_RT_TEST(FLB_IN_FORWARD       "in_forward.c")
   FLB_RT_TEST(FLB_IN_FLUENTBIT_METRICS "in_fluentbit_metrics.c")
   FLB_RT_TEST(FLB_IN_KUBERNETES_EVENTS "in_kubernetes_events.c")
+  if (FLB_IN_SYSTEMD)
+    FLB_RT_TEST(FLB_IN_SYSTEMD        "in_systemd.c")
+  endif ()
 endif()
 
 if (FLB_CUSTOM_CALYPTIA)
diff --git a/tests/runtime/in_systemd.c b/tests/runtime/in_systemd.c
new file mode 100644
index 00000000000..098d5ceb0c4
--- /dev/null
+++ b/tests/runtime/in_systemd.c
@@ -0,0 +1,114 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+/*  Fluent Bit
+ *  ==========
+ *  Copyright (C) 2015-2022 The Fluent Bit Authors
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#include <fluent-bit.h>
+#include <fluent-bit/flb_pack.h>
+#include <fluent-bit/flb_record_accessor.h>
+#include <fluent-bit/flb_ra_key.h>
+
+#include "flb_tests_runtime.h"
+
+static void cb_check_cfl_variant_properties(void *ctx, int ffd,
+                                            int res_ret, void *res_data, size_t res_size,
+                                            void *data)
+{
+    flb_sds_t output;
+    char *result = NULL;
+
+    /* Convert from msgpack to JSON */
+    output = flb_msgpack_raw_to_json_sds(res_data, res_size);
+    TEST_CHECK(output != NULL);
+
+    result = strstr(output, "\"MESSAGE\":\"test native message with multiple values\"");
+    if (TEST_CHECK(result != NULL)) {
+        TEST_MSG("output:%s\n", output);
+    }
+
+    result = strstr(output, "\"KEY\":[\"value1\",\"value4\",\"another\"]");
+    if (TEST_CHECK(result != NULL)) {
+        TEST_MSG("output:%s\n", output);
+    }
+
+    result = strstr(output, "\"KEY2\":[\"value2\",\"value3\",\"value5\",\"value10\",\"final_field\"]");
+    if (TEST_CHECK(result != NULL)) {
+        TEST_MSG("output:%s\n", output);
+    }
+
+    result = strstr(output, "\"KEY3\":[\"howdy\",\"prettygood\",\"wow\"]");
+    if (TEST_CHECK(result != NULL)) {
+        TEST_MSG("output:%s\n", output);
+    }
+
+    flb_sds_destroy(output);
+}
+
+void flb_test_duplicated_keys()
+{
+    int ret;
+    int in_ffd;
+    int out_ffd;
+    flb_ctx_t *ctx;
+    char *message = "MESSAGE=test native message with multiple values\nKEY=value1\nKEY=value4\n"
+        "KEY2=value2\nKEY=another\nKEY2=value3\nKEY2=value5\nKEY3=howdy\nKEY3=prettygood\nKEY2=value10\n"
+        "KEY3=wow\nKEY2=final_field\n";
+
+    /* Create context, flush every second (some checks omitted here) */
+    ctx = flb_create();
+    flb_service_set(ctx,
+                    "flush", "2",
+                    "grace", "1",
+                    "Log_Level", "error",
+                    NULL);
+
+    /* Systemd */
+    in_ffd = flb_input(ctx, (char *) "systemd", NULL);
+    flb_input_set(ctx, in_ffd,
+                  "tag", "test",
+                  "Read_From_Tail", "On",
+                  NULL);
+
+
+    out_ffd = flb_output(ctx, (char *) "null", NULL);
+    flb_output_set(ctx, out_ffd,
+                   "match", "test",
+                   NULL);
+
+    /* Enable test mode */
+    ret = flb_input_set_test(ctx, in_ffd, "formatter",
+                             cb_check_cfl_variant_properties,
+                             NULL);
+
+    /* Start */
+    ret = flb_start(ctx);
+    TEST_CHECK(ret == 0);
+
+    /* Ingest data sample to run test formatter */
+    ret = flb_lib_push(ctx, in_ffd, message, strlen(message));
+    TEST_CHECK(ret == 0);
+
+    sleep(2);
+    flb_stop(ctx);
+    flb_destroy(ctx);
+}
+
+/* Test list */
+TEST_LIST = {
+    { "duplicated_keys", flb_test_duplicated_keys },
+    { NULL, NULL}
+};