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Android CMD gtest

gtest单元测试so库

参考文档

log

log头文件

  • 加入头文件方法：#include <log/log.h>
  • TAG及ALOGV使用注意事项：system/core/include/log/log.h 
    /*
 * Normally we strip ALOGV (VERBOSE messages) from release builds.
 * You can modify this (for example with "#define LOG_NDEBUG 0"
 * at the top of your source file) to change that behavior.
 */
#ifndef LOG_NDEBUG
#ifdef NDEBUG
#define LOG_NDEBUG 1
#else
#define LOG_NDEBUG 0
#endif
#endif

/*
 * This is the local tag used for the following simplified
 * logging macros.  You can change this preprocessor definition
 * before using the other macros to change the tag.
 */
#ifndef LOG_TAG
#define LOG_TAG NULL
#endif
    • 在引用#include <log/log.h>之前，先定义宏LOG_TAG;
    • 想要看ALOGV输出信息，在文件头处，先定义宏#define LOG_NDEBUG 0;
  • 使用方法：https://android.googlesource.com/platform/system/core/+/4a6e5a3/liblog/README

ALOGD分析

通过system/core/include/log/log.h查看ALOGD宏处理流程

/*
 * ===========================================================================
 *
 * The stuff in the rest of this file should not be used directly.
 */

#define android_printLog(prio, tag, fmt...) \
    __android_log_print(prio, tag, fmt)

/*
 * Basic log message macro.
 *
 * Example:
 *  ALOG(LOG_WARN, NULL, "Failed with error %d", errno);
 *
 * The second argument may be NULL or "" to indicate the "global" tag.
 */
#ifndef ALOG
#define ALOG(priority, tag, ...) \
    LOG_PRI(ANDROID_##priority, tag, __VA_ARGS__)
#endif

/*
 * Log macro that allows you to specify a number for the priority.
 */
#ifndef LOG_PRI
#define LOG_PRI(priority, tag, ...) \
    android_printLog(priority, tag, __VA_ARGS__)
#endif

/*
 * Simplified macro to send a debug log message using the current LOG_TAG.
 */
#ifndef ALOGD
#define ALOGD(...) ((void)ALOG(LOG_DEBUG, LOG_TAG, __VA_ARGS__))
#endif

其中system/core/lude/android/log.h定义了ANDROID_LOG_DEBUG

/*
 * Android log priority values, in ascending priority order.
 */
typedef enum android_LogPriority {
    ANDROID_LOG_UNKNOWN = 0,
    ANDROID_LOG_DEFAULT,    /* only for SetMinPriority() */
    ANDROID_LOG_VERBOSE,
    ANDROID_LOG_DEBUG,
    ANDROID_LOG_INFO,
    ANDROID_LOG_WARN,
    ANDROID_LOG_ERROR,
    ANDROID_LOG_FATAL,
    ANDROID_LOG_SILENT,     /* only for SetMinPriority(); must be last */
} android_LogPriority;

gtest

source

https://github.com/ZengjfOS/RaspberryPi/tree/android_gtest

logcat

C:\Users\zengjianfeng\Desktop>adb logcat -s zengjf
--------- beginning of main
--------- beginning of system
12-31 20:36:06.661  8645  8645 D zengjf  : just check for run test
12-31 20:36:06.661  8645  8645 W zengjf  : just check for ALOGW

shell

root@zengjf:/ # zengjf_test
just check for run test
root@zengjf:/ # zengjf-unit-tests
Running main() from gtest_main.cc
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from zengjf_test
[ RUN      ] zengjf_test.test
just check for run test
[       OK ] zengjf_test.test (1 ms)
[----------] 1 test from zengjf_test (2 ms total)

[----------] Global test environment tear-down
[==========] 1 test from 1 test case ran. (2 ms total)
[  PASSED  ] 1 test.