tests: add new test to check in_cpu plugin

Signed-off-by: Takahiro YAMASHITA <nokute78@gmail.com>

Author: nokute78

tests/CMakeLists.txt

@@ -10,6 +10,7 @@ list(APPEND check_PROGRAMS
   flb_test_stdout.cpp
   flb_test_fluentd.cpp
   flb_test_elasticsearch.cpp
+  flb_test_in_cpu.cpp
   )
 
 foreach(source_file ${check_PROGRAMS})

tests/flb_test_in_cpu.cpp

@@ -0,0 +1,85 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+/*  Fluent Bit
+ *  ==========
+ *  Copyright (C) 2015-2016 Treasure Data Inc.
+ *
+ *  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 <gtest/gtest.h>
+#include <fluent-bit.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+pthread_mutex_t result_mutex;
+int result;
+
+int callback_test(void* data, size_t size)
+{
+    if (size > 0) {
+        free(data);
+        pthread_mutex_lock(&result_mutex);
+        result = 1;/* success */
+        pthread_mutex_unlock(&result_mutex);
+    }
+    return 0;
+}
+
+TEST(Inputs, flush_5s) 
+{
+    int           ret    = 0;
+    flb_ctx_t    *ctx    = NULL;
+    flb_input_t  *input  = NULL;
+    flb_output_t *output = NULL;
+
+    /* initialize */
+    ret = pthread_mutex_init(&result_mutex, NULL);
+    result = 0;
+    EXPECT_EQ(ret, 0);
+
+    ctx = flb_create();
+
+    input = flb_input(ctx, (char *) "cpu", NULL);
+    EXPECT_TRUE(input != NULL);
+    flb_input_set(input, "tag", "test", NULL);
+
+    output = flb_output(ctx, (char *) "lib", (void*)callback_test);
+    EXPECT_TRUE(output != NULL);
+    flb_output_set(output, "match", "test", NULL);
+
+    ret = flb_start(ctx);
+    EXPECT_EQ(ret, 0);
+
+    /* start test */
+    sleep(2);
+    pthread_mutex_lock(&result_mutex);
+    ret = result; /* 2sec passed, no data should be flushed */
+    pthread_mutex_unlock(&result_mutex);
+    EXPECT_EQ(ret, 0);
+
+    sleep(3);
+    pthread_mutex_lock(&result_mutex);
+    ret = result; /* 5sec passed, data should be flushed */
+    pthread_mutex_unlock(&result_mutex);
+    EXPECT_EQ(ret, 1);
+
+
+    /* finalize */
+    flb_stop(ctx);
+    flb_destroy(ctx);
+
+    ret = pthread_mutex_destroy(&result_mutex);
+    EXPECT_EQ(ret, 0);
+}