liblog/tests/log_id_test.cpp

/*
 * Copyright (C) 2013-2017 The Android Open Source Project
 *
 * 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 <inttypes.h>
#include <pthread.h>
#include <stdio.h>
#include <unistd.h>

#include <gtest/gtest.h>
// Test the APIs in this standalone include file
#include <log/log_id.h>

// We do not want to include <android/log.h> to acquire ANDROID_LOG_INFO for
// include file API purity.  We do however want to allow the _option_ that
// log/log_id.h could include this file, or related content, in the future.
#ifndef __android_LogPriority_defined
#define ANDROID_LOG_INFO 4
#endif

TEST(liblog, log_id) {
  int count = 0;

  for (int i = LOG_ID_MIN; i < LOG_ID_MAX; ++i) {
    log_id_t id = static_cast<log_id_t>(i);
    const char* name = android_log_id_to_name(id);
    if (id != android_name_to_log_id(name)) {
      continue;
    }
    ++count;
    fprintf(stderr, "log buffer %s\r", name);
  }
  ASSERT_EQ(LOG_ID_MAX, count);
}

TEST(liblog, __android_log_buf_print) {
  EXPECT_LT(0, __android_log_buf_print(LOG_ID_RADIO, ANDROID_LOG_INFO,
                                       "TEST__android_log_buf_print", "radio"));
  usleep(1000);
  EXPECT_LT(0,
            __android_log_buf_print(LOG_ID_SYSTEM, ANDROID_LOG_INFO,
                                    "TEST__android_log_buf_print", "system"));
  usleep(1000);
  EXPECT_LT(0, __android_log_buf_print(LOG_ID_MAIN, ANDROID_LOG_INFO,
                                       "TEST__android_log_buf_print", "main"));
  usleep(1000);
}

TEST(liblog, __android_log_buf_write) {
  EXPECT_LT(0, __android_log_buf_write(LOG_ID_RADIO, ANDROID_LOG_INFO,
                                       "TEST__android_log_buf_write", "radio"));
  usleep(1000);
  EXPECT_LT(0,
            __android_log_buf_write(LOG_ID_SYSTEM, ANDROID_LOG_INFO,
                                    "TEST__android_log_buf_write", "system"));
  usleep(1000);
  EXPECT_LT(0, __android_log_buf_write(LOG_ID_MAIN, ANDROID_LOG_INFO,
                                       "TEST__android_log_buf_write", "main"));
  usleep(1000);
}

static void* ConcurrentPrintFn(void* arg) {
  int ret = __android_log_buf_print(
      LOG_ID_MAIN, ANDROID_LOG_INFO, "TEST__android_log_print",
      "Concurrent %" PRIuPTR, reinterpret_cast<uintptr_t>(arg));
  return reinterpret_cast<void*>(ret);
}

#define NUM_CONCURRENT 64
#define _concurrent_name(a, n) a##__concurrent##n
#define concurrent_name(a, n) _concurrent_name(a, n)

TEST(liblog, concurrent_name(__android_log_buf_print, NUM_CONCURRENT)) {
  pthread_t t[NUM_CONCURRENT];
  int i;
  for (i = 0; i < NUM_CONCURRENT; i++) {
    ASSERT_EQ(0, pthread_create(&t[i], NULL, ConcurrentPrintFn,
                                reinterpret_cast<void*>(i)));
  }
  int ret = 1;
  for (i = 0; i < NUM_CONCURRENT; i++) {
    void* result;
    ASSERT_EQ(0, pthread_join(t[i], &result));
    int this_result = reinterpret_cast<uintptr_t>(result);
    if ((0 < ret) && (ret != this_result)) {
      ret = this_result;
    }
  }
  ASSERT_LT(0, ret);
}