Merge ST, support utest and coverage by gtest.

2025-03-09 15:49:59 +00:00 · 2021-03-03 10:26:30 +08:00 · 2021-03-03 10:26:30 +08:00 · 7d12c3641a
commit 7d12c3641a
parent 3bb1b673c5
11 changed files with 444 additions and 3 deletions
--- a/trunk/3rdparty/st-srs/.circleci/config.yml
+++ b/trunk/3rdparty/st-srs/.circleci/config.yml
@ -0,0 +1,24 @@
+version: 2
+jobs:
+  build:
+    docker:
+      - image: ossrs/srs:dev
+    steps:
+      - checkout
+      - run: |
+          make linux-debug
+  test:
+    docker:
+      - image: ossrs/srs:dev
+    steps:
+      - checkout
+      - run: |
+          ln -sf /usr/local/gtest utest/gtest &&
+          make linux-debug-gcov &&
+          ./obj/st_utest && bash auto/codecov.sh
+workflows:
+  version: 2
+  build_and_test:
+    jobs:
+      - build
+      - test
--- a/trunk/3rdparty/st-srs/.gitignore
+++ b/trunk/3rdparty/st-srs/.gitignore
@ -2,3 +2,11 @@ DARWIN_*_DBG
 LINUX_*_DBG
 obj
 st.pc
+.idea
+
+gtest*
+googletest-*
+*.gcda
+*.gcno
+coverage
+codecov
--- a/trunk/3rdparty/st-srs/Makefile
+++ b/trunk/3rdparty/st-srs/Makefile
@ -98,6 +98,9 @@ TARGETS     = aix-debug aix-optimized               \
              solaris-debug solaris-optimized       \
              solaris-64-debug solaris-64-optimized

+UTEST_TARGETS = darwin-debug-utest linux-debug-utest \
+                darwin-debug-gcov linux-debug-gcov
+
 #
 # Platform specifics
 #
@ -282,12 +285,21 @@ endif
 #
 # make EXTRA_CFLAGS=-UMD_HAVE_EPOLL <target>
 #
+# or to enable sendmmsg(2) support:
+#
+# make EXTRA_CFLAGS="-DMD_HAVE_SENDMMSG -D_GNU_SOURCE"
+#
 # or to enable stats for ST:
 #
 # make EXTRA_CFLAGS=-DDEBUG_STATS
+#
+# or enable the coverage for utest:
+# make UTEST_FLAGS="-fprofile-arcs -ftest-coverage"
+#
 ##########################

 CFLAGS      += $(DEFINES) $(OTHER_FLAGS) $(EXTRA_CFLAGS)
+CFLAGS      += $(UTEST_FLAGS)

 OBJS        = $(TARGETDIR)/sched.o \
              $(TARGETDIR)/stk.o   \
@ -347,6 +359,8 @@ unknown:
 	@echo
 	@for target in $(TARGETS); do echo $$target; done
 	@echo
+	@for target in $(UTEST_TARGETS); do echo $$target; done
+	@echo

 st.pc:	st.pc.in
 	sed "s/@VERSION@/${VERSION}/g" < $< > $@
@ -479,5 +493,23 @@ solaris-64-debug:
 solaris-64-optimized:
 	$(MAKE) OS="SOLARIS_64" BUILD="OPT"

+darwin-debug-utest:
+	@echo "Build utest for state-threads"
+	$(MAKE) OS="DARWIN" BUILD="DBG"
+	cd utest && $(MAKE)
+linux-debug-utest:
+	@echo "Build utest for state-threads"
+	$(MAKE) OS="LINUX" BUILD="DBG"
+	cd utest && $(MAKE)
+
+darwin-debug-gcov:
+	@echo "Build utest with gcov for state-threads"
+	$(MAKE) OS="DARWIN" BUILD="DBG" UTEST_FLAGS="-fprofile-arcs -ftest-coverage" STATIC_ONLY=yes
+	cd utest && $(MAKE) UTEST_FLAGS="-fprofile-arcs -ftest-coverage"
+linux-debug-gcov:
+	@echo "Build utest with gcov for state-threads"
+	$(MAKE) OS="LINUX" BUILD="DBG" UTEST_FLAGS="-fprofile-arcs -ftest-coverage" STATIC_ONLY=yes
+	cd utest && $(MAKE) UTEST_FLAGS="-fprofile-arcs -ftest-coverage"
+
 ##########################

--- a/trunk/3rdparty/st-srs/README.md
+++ b/trunk/3rdparty/st-srs/README.md
@ -1,6 +1,8 @@
 # state-threads

 ![](http://ossrs.net:8000/gif/v1/sls.gif?site=github.com&path=/srs/srsst)
+[![](https://circleci.com/gh/ossrs/state-threads/tree/srs.svg?style=svg&circle-token=1ef1d5b5b0cde6c8c282ed856a18199f9e8f85a9)](https://circleci.com/gh/ossrs/state-threads/tree/srs)
+[![](https://codecov.io/gh/ossrs/state-threads/branch/srs/graph/badge.svg)](https://codecov.io/gh/ossrs/state-threads/branch/srs)
 [![](https://cloud.githubusercontent.com/assets/2777660/22814959/c51cbe72-ef92-11e6-81cc-32b657b285d5.png)](https://github.com/ossrs/srs/wiki/v1_CN_Contact#wechat)

 Fork from http://sourceforge.net/projects/state-threads, patched for [SRS](https://github.com/ossrs/srs/tree/2.0release).
@ -14,8 +16,8 @@ For original ST without any changes, checkout the [ST master branch](https://git
 Get code:

 ```
-git clone https://github.com/ossrs/state-threads.git st-1.9 &&
-git checkout -b srs origin/srs
+git clone https://github.com/ossrs/state-threads.git &&
+cd state-threads && git checkout srs
 ```

 For Linux:
@ -66,9 +68,10 @@ The branch [srs](https://github.com/ossrs/state-threads/tree/srs) will be patche
 - [x] Support macro `MD_ST_NO_ASM` to disable ASM, [#8](https://github.com/ossrs/state-threads/issues/8).
 - [x] Merge patch [srs#1282](https://github.com/ossrs/srs/issues/1282#issuecomment-445539513) to support aarch64, [#9](https://github.com/ossrs/state-threads/issues/9).
 - [x] Support OSX for Apple Darwin, macOS, [#11](https://github.com/ossrs/state-threads/issues/11).
- [ ] Support sendmmsg for UDP, [#12](https://github.com/ossrs/state-threads/issues/12).
+- [x] Support sendmmsg for UDP, [#12](https://github.com/ossrs/state-threads/issues/12).
 - [x] Refine performance for sleep or epoll_wait(0), [#17](https://github.com/ossrs/state-threads/issues/17).
 - [ ] Improve the performance of timer. [9fe8cfe5b](https://github.com/ossrs/state-threads/commit/9fe8cfe5b1c9741a2e671a46215184f267fba400), [7879c2b](https://github.com/ossrs/state-threads/commit/7879c2b), [387cddb](https://github.com/ossrs/state-threads/commit/387cddb)
+- [x] Support utest by gtest and coverage by gcov/gocvr.

 ## GDB Tools

@ -88,6 +91,49 @@ Important cli options:
 1. `--track-origins=<yes|no> [default: no]`, Controls whether Memcheck tracks the origin of uninitialised values. By default, it does not, which means that although it can tell you that an uninitialised value is being used in a dangerous way, it cannot tell you where the uninitialised value came from. This often makes it difficult to track down the root problem.
 1. `--show-reachable=<yes|no> , --show-possibly-lost=<yes|no>`, to show the using memory.

+## UTest and Coverage
+
+First of all, download [google test](https://github.com/google/googletest/releases/tag/release-1.6.0) to `utest/gtest`, check by:
+
+```bash
+ls -lh utest/gtest/include/gtest/gtest.h >/dev/null && echo yes
+```
+
+To make ST with utest and run it:
+
+```bash
+make linux-debug-gcov && ./obj/st_utest
+```
+
+> For macOS: `make darwin-debug-gcov && ./obj/st_utest`
+
+> Run utest without coverage: `make darwin-debug-utest && ./obj/st_utest`
+
+Then, install [gcovr](https://gcovr.com/en/stable/guide.html) for coverage:
+
+```bash
+yum install -y python2-pip &&
+pip install lxml && pip install gcovr
+```
+
+> For macOS: `pip3 install gcovr`
+
+Finally, run test and get the report
+
+```bash
+mkdir -p coverage &&
+gcovr -r . -e LINUX -e DARWIN -e examples --html --html-details -o coverage/st.html &&
+open coverage/st.html
+```
+
+> Note: We ignore `LINUX*` and `DARWIN*` which is `obj` actually.
+
+Or just run locally:
+
+```bash
+bash auto/coverage.sh
+```
+
 ## Docs & Analysis

 * Introduction: http://ossrs.github.io/state-threads/docs/st.html
--- a/trunk/3rdparty/st-srs/auto/codecov.sh
+++ b/trunk/3rdparty/st-srs/auto/codecov.sh
@ -0,0 +1,52 @@
+#!/bin/bash
+
+# In .circleci/config.yml, generate *.gcno with
+#       ./configure --gcov --without-research --without-librtmp && make
+# and generate *.gcda by
+#       ./objs/srs_utest
+
+# Workdir is objs/cover.
+workdir=`pwd`/codecov && rm -rf $workdir
+
+# Tool git is required to map the right path.
+git --version >/dev/null 2>&1
+ret=$?; if [[ $ret -ne 0 ]]; then echo "Tool git is required, ret=$ret"; exit $ret; fi
+
+# Create trunk under workdir.
+mkdir -p $workdir && cd $workdir
+ret=$?; if [[ $ret -ne 0 ]]; then echo "Enter workdir failed, ret=$ret"; exit $ret; fi
+
+# Collect all *.gcno and *.gcda to objs/cover.
+cd $workdir && for file in $(cd .. && ls *.c); do
+  cp ../$file $file && echo "Copy $file" &&
+  if [[ -f ../obj/${file%.*}.gcno ]]; then
+    cp ../obj/${file%.*}.* .
+  fi
+done
+ret=$?; if [[ $ret -ne 0 ]]; then echo "Collect *.gcno and *.gcda failed, ret=$ret"; exit $ret; fi
+
+# Generate *.gcov for coverage.
+cd $workdir &&
+for file in $(ls *.c); do
+    gcov $file -o `dirname $file`
+    ret=$?; if [[ $ret -ne 0 ]]; then echo "Collect $file failed, ret=$ret"; exit $ret; fi
+done
+
+# Filter the gcov files, remove utest or gtest.
+cd $workdir &&
+rm -f *gtest*.gcov *utest*.gcov
+ret=$?; if [[ $ret -ne 0 ]]; then echo "Cook gcov files failed, ret=$ret"; exit $ret; fi
+
+# Upload report with *.gcov
+# Remark: The file codecov.yml is not neccessary. It literally depends on git.
+# Note: The right path is like:
+#       https://codecov.io/gh/ossrs/srs/src/3.0release/trunk/src/protocol/srs_rtmp_stack.cpp
+#       https://codecov.io/gh/ossrs/srs/src/20fbb4466fdc8ba5d810b8570df6004063212838/trunk/src/protocol/srs_rtmp_stack.cpp
+# Remark: It takes a few minutes to sync with github, so it might not available when CircleCI is done.
+#       https://circleci.com/gh/ossrs/srs/tree/3.0release
+#
+# Note: Use '-X gcov' to avoid generate the gcov files again.
+cd $workdir &&
+export CODECOV_TOKEN="0d616496-f781-4e7c-b285-d1f70a1cdf24" &&
+bash <(curl -s https://codecov.io/bash) -X gcov &&
+echo "Done" && exit 0
--- a/trunk/3rdparty/st-srs/auto/coverage.sh
+++ b/trunk/3rdparty/st-srs/auto/coverage.sh
@ -0,0 +1,39 @@
+#!/bin/bash
+
+if [[ ! -f utest/gtest/include/gtest/gtest.h ]]; then
+  (
+    cd utest && rm -rf gtest &&
+    curl https://github.com/google/googletest/archive/release-1.6.0.tar.gz -L -o googletest-release-1.6.0.tar.gz &&
+    tar xf googletest-release-1.6.0.tar.gz &&
+    ln -sf googletest-release-1.6.0 gtest &&
+    echo "Setup gtest ok"
+  )
+fi
+if [[ ! -f utest/gtest/include/gtest/gtest.h ]]; then
+  echo "No utest/gtest, please download from https://github.com/google/googletest/releases/tag/release-1.6.0"
+  exit -1
+else
+  echo "Check utest/gtest ok"
+fi
+
+if [[ $(gcovr --version >/dev/null && echo yes) != yes ]]; then
+  echo "Please install gcovr: https://github.com/ossrs/state-threads/tree/srs#utest-and-coverage"
+  exit -1
+fi
+
+IS_LINUX=yes
+uname -s|grep Darwin >/dev/null && IS_DARWIN=yes && IS_LINUX=no
+echo "IS_LINUX: $IS_LINUX, IS_DARWIN: $IS_DARWIN"
+
+echo "Build and run utest"
+if [[ $IS_DARWIN == yes ]]; then
+  make clean && make darwin-debug-gcov && ./obj/st_utest
+else
+  make clean && make linux-debug-gcov && ./obj/st_utest
+fi
+
+echo "Generating coverage"
+mkdir -p coverage &&
+gcovr -r . -e LINUX -e DARWIN -e examples --html --html-details -o coverage/st.html &&
+echo "Coverage report at coverage/st.html" &&
+open coverage/st.html
--- a/trunk/3rdparty/st-srs/io.c
+++ b/trunk/3rdparty/st-srs/io.c
@ -68,6 +68,8 @@ unsigned long long _st_stat_recvmsg = 0;
 unsigned long long _st_stat_recvmsg_eagain = 0;
 unsigned long long _st_stat_sendmsg = 0;
 unsigned long long _st_stat_sendmsg_eagain = 0;
+unsigned long long _st_stat_sendmmsg = 0;
+unsigned long long _st_stat_sendmmsg_eagain = 0;
 #endif

 #if EAGAIN != EWOULDBLOCK
@ -831,6 +833,69 @@ int st_sendmsg(_st_netfd_t *fd, const struct msghdr *msg, int flags, st_utime_t
    return n;
 }

+int st_sendmmsg(st_netfd_t fd, struct st_mmsghdr *msgvec, unsigned int vlen, int flags, st_utime_t timeout)
+{
+#if defined(MD_HAVE_SENDMMSG) && defined(_GNU_SOURCE)
+    int n;
+    int left;
+    struct mmsghdr *p;
+
+    #if defined(DEBUG) && defined(DEBUG_STATS)
+    ++_st_stat_sendmmsg;
+    #endif
+
+    left = (int)vlen;
+    while (left > 0) {
+        p = (struct mmsghdr*)msgvec + (vlen - left);
+
+        if ((n = sendmmsg(fd->osfd, p, left, flags)) < 0) {
+            if (errno == EINTR)
+                continue;
+            if (!_IO_NOT_READY_ERROR)
+                break;
+
+            #if defined(DEBUG) && defined(DEBUG_STATS)
+            ++_st_stat_sendmmsg_eagain;
+            #endif
+
+            /* Wait until the socket becomes writable */
+            if (st_netfd_poll(fd, POLLOUT, timeout) < 0)
+                break;
+        }
+
+        left -= n;
+    }
+
+    // An error is returned only if no datagrams could be sent.
+    if (left == (int)vlen) {
+        return n;
+    }
+    return (int)vlen - left;
+#else
+    struct st_mmsghdr *p;
+    int i, n;
+
+    // @see http://man7.org/linux/man-pages/man2/sendmmsg.2.html
+    for (i = 0; i < (int)vlen; ++i) {
+        p = msgvec + i;
+        n = st_sendmsg(fd, &p->msg_hdr, flags, timeout);
+        if (n < 0) {
+            // An error is returned only if no datagrams could be sent.
+            if (i == 0) {
+                return n;
+            }
+            return i + 1;
+        }
+
+        p->msg_len = n;
+    }
+
+    // Returns the number of messages sent from msgvec; if this is less than vlen, the caller can retry with a
+    // further sendmmsg() call to send the remaining messages.
+    return vlen;
+#endif
+}
+

 /*
 * To open FIFOs or other special files.
--- a/trunk/3rdparty/st-srs/public.h
+++ b/trunk/3rdparty/st-srs/public.h
@ -153,6 +153,14 @@ extern int st_sendto(st_netfd_t fd, const void *msg, int len, const struct socka
 extern int st_recvmsg(st_netfd_t fd, struct msghdr *msg, int flags, st_utime_t timeout);
 extern int st_sendmsg(st_netfd_t fd, const struct msghdr *msg, int flags, st_utime_t timeout);

+// @see http://man7.org/linux/man-pages/man2/sendmmsg.2.html
+#include <sys/socket.h>
+struct st_mmsghdr {
+   struct msghdr msg_hdr;  /* Message header */
+   unsigned int  msg_len;  /* Number of bytes transmitted */
+};
+extern int st_sendmmsg(st_netfd_t fd, struct st_mmsghdr *msgvec, unsigned int vlen, int flags, st_utime_t timeout);
+
 extern st_netfd_t st_open(const char *path, int oflags, mode_t mode);

 #ifdef DEBUG
--- a/trunk/3rdparty/st-srs/utest/Makefile
+++ b/trunk/3rdparty/st-srs/utest/Makefile
@ -0,0 +1,82 @@
+# user must run make the objs/utest dir
+# at the same dir of Makefile.
+
+# A sample Makefile for building Google Test and using it in user
+# tests.  Please tweak it to suit your environment and project.  You
+# may want to move it to your project's root directory.
+#
+# SYNOPSIS:
+#
+#   make [all]  - makes everything.
+#   make TARGET - makes the given target.
+#   make clean  - removes all files generated by make.
+
+# Please tweak the following variable definitions as needed by your
+# project, except GTEST_HEADERS, which you can use in your own targets
+# but shouldn't modify.
+
+# Points to the root of Google Test, relative to where this file is.
+# Remember to tweak this if you move this file.
+GTEST_DIR = ./gtest
+
+# Flags passed to the preprocessor.
+CPPFLAGS += -I$(GTEST_DIR)/include
+
+# Flags passed to the C++ compiler.
+CXXFLAGS +=  -g -O0 -std=c++11
+CXXFLAGS += -Wall -Wno-deprecated-declarations -Wno-unused-private-field -Wno-unused-command-line-argument
+CXXFLAGS += -DGTEST_USE_OWN_TR1_TUPLE=1
+
+# All tests produced by this Makefile.  Remember to add new tests you
+# created to the list.
+TESTS = ../obj/st_utest
+
+# All Google Test headers.  Usually you shouldn't change this
+# definition.
+GTEST_HEADERS = $(GTEST_DIR)/include/gtest/*.h \
+                $(GTEST_DIR)/include/gtest/internal/*.h
+
+# House-keeping build targets.
+
+all : $(TESTS)
+
+clean :
+	rm -f $(TESTS) gtest.a gtest_main.a *.o *.gcno *.gcda
+
+# Usually you shouldn't tweak such internal variables, indicated by a
+# trailing _.
+GTEST_SRCS_ = $(GTEST_DIR)/src/*.cc $(GTEST_DIR)/src/*.h $(GTEST_HEADERS)
+
+# For simplicity and to avoid depending on Google Test's
+# implementation details, the dependencies specified below are
+# conservative and not optimized.  This is fine as Google Test
+# compiles fast and for ordinary users its source rarely changes.
+../obj/gtest-all.o : $(GTEST_SRCS_)
+	$(CXX) $(CPPFLAGS) -I$(GTEST_DIR) $(CXXFLAGS) -c \
+            $(GTEST_DIR)/src/gtest-all.cc -o $@
+
+../obj/gtest.a : ../obj/gtest-all.o
+	$(AR) $(ARFLAGS) $@ $^
+
+#####################################################################################
+#####################################################################################
+# ST(state-threads) utest section
+#####################################################################################
+#####################################################################################
+
+# Includes, the include dir.
+ST_UTEST_INC = -I../obj -I./
+
+# Depends, the depends objects
+ST_UTEST_DEPS = ../obj/libst.a
+
+# Depends, utest header files
+UTEST_DEPS =  st_utest.hpp
+
+# Objects, build each object of utest
+../obj/st_utest.o : st_utest.cpp $(ST_UTEST_DEPS) $(UTEST_DEPS)
+	$(CXX) $(CPPFLAGS) $(CXXFLAGS) $(UTEST_FLAGS) $(ST_UTEST_INC) -c st_utest.cpp -o $@
+
+# generate the utest binary
+../obj/st_utest : ../obj/st_utest.o ../obj/gtest.a $(ST_UTEST_DEPS)
+	$(CXX) -o $@ $(CPPFLAGS) $(CXXFLAGS) $(UTEST_FLAGS) $^ -lpthread -ldl
--- a/trunk/3rdparty/st-srs/utest/st_utest.cpp
+++ b/trunk/3rdparty/st-srs/utest/st_utest.cpp
@ -0,0 +1,49 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2021 Winlin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include <st_utest.hpp>
+
+#include <st.h>
+#include <assert.h>
+
+// We could do something in the main of utest.
+// Copy from gtest-1.6.0/src/gtest_main.cc
+GTEST_API_ int main(int argc, char **argv) {
+    // Select the best event system available on the OS. In Linux this is
+    // epoll(). On BSD it will be kqueue.
+    assert(st_set_eventsys(ST_EVENTSYS_ALT) != -1);
+    assert(st_init() == 0);
+
+    testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}
+
+// basic test and samples.
+VOID TEST(SampleTest, FastSampleInt64Test)
+{
+    EXPECT_EQ(1, (int)sizeof(int8_t));
+    EXPECT_EQ(2, (int)sizeof(int16_t));
+    EXPECT_EQ(4, (int)sizeof(int32_t));
+    EXPECT_EQ(8, (int)sizeof(int64_t));
+}
+
--- a/trunk/3rdparty/st-srs/utest/st_utest.hpp
+++ b/trunk/3rdparty/st-srs/utest/st_utest.hpp
@ -0,0 +1,36 @@
+/*
+The MIT License (MIT)
+
+Copyright (c) 2021 Winlin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef ST_UTEST_PUBLIC_HPP
+#define ST_UTEST_PUBLIC_HPP
+
+// Before define the private/protected, we must include some system header files.
+// Or it may fail with:
+//      redeclared with different access struct __xfer_bufptrs
+// @see https://stackoverflow.com/questions/47839718/sstream-redeclared-with-public-access-compiler-error
+#include <gtest/gtest.h>
+
+#define VOID
+
+#endif
+