C++单元测试之四--利用cppunit运行测试用例

cppunit是一个很好的针对于C++/C的单元测试框架，它源自于junit。利用cppunit我们可以很好的管理运行测试用例。
cppunit是开源的，遵循LGPLv2许可证。
你可以从下载到最新版本。
下载解压后依次运行：
./configure
./make
./make install
cppunit就会被自动部署到你的机器上，其中头文件位于/usr/include/cppunit目录下，库文件位于/usr/local/lib中。你也可以直接把附件中编译好的cppunit解压拷贝到对应目录下。

设置好cppunit环境后，下面就开始修改代码。
首先修改Main.cpp如下：

 #include <stdio.h>

#include <stdlib.h>
#include <cppunit/extensions/TestFactoryRegistry.h>
#include <cppunit/ui/text/TestRunner.h>

int main(int argc, char *argv[])
{
        CppUnit::TextUi::TestRunner runner;
        CppUnit::TestFactoryRegistry &registry = CppUnit::TestFactoryRegistry::getRegistry();
        runner.addTest(registry.makeTest());

        runner.run();


    return 0;
}

其次添加TestA.cpp/.h来测试A.cpp:

//TestA.h
#include <cppunit/extensions/HelperMacros.h>

class TestA: public CppUnit::TestFixture{
        CPPUNIT_TEST_SUITE(TestA);
        CPPUNIT_TEST(testSum);
        CPPUNIT_TEST(testMultiply);
        CPPUNIT_TEST_SUITE_END();
public:
        void testSum();
        void testMultiply();
};

//TestA.cpp
#include "A.h"
#include "TestA.h"
CPPUNIT_TEST_SUITE_REGISTRATION(TestA);
void TestA::testSum()
{
        A a;
        CPPUNIT_ASSERT(11 == a.Sum(5,6));

}

void TestA::testMultiply()
{
        A a;
        CPPUNIT_ASSERT(30 == a.Multiply(5,6));
}

cppunit使用断言(ASSERT)来判断测试结果是否正确。
最后修改Makefile:

OBJS= Main.o A.o TestA.o

UTest.out: $(OBJS)
        g++ -o UTest.out $(OBJS)  -ldl -lgcov -lcppunit


CURDIR=$(shell pwd)

$(OBJS): %.o: %.cpp
        g++  -I$(CURDIR) -c -g -fprofile-arcs -ftest-coverage $< -o $@

#unit test and code coverage check
UT:UTest.out
        valgrind --tool=memcheck --leak-check=full ./UTest.out
        ./gcov_checker 90 --objects $(OBJS)
#gcov -o A.o A.cpp

.PHONY: clean
clean:
        rm -f *.o *.gcno *.gcda *.gcov UTest.out

编译运行的结果是：

[root@tivu25 utcov_cppunit]# make clean;make UT
rm -f *.o *.gcno *.gcda *.gcov UTest.outg++  -I/home/haoqf/src/UTest/utcov_cppunit -c -g -fprofile-arcs -ftest-coverage Main.cpp -o Main.o g++  -I/home/haoqf/src/UTest/utcov_cppunit -c -g -fprofile-arcs -ftest-coverage A.cpp -o A.o g++  -I/home/haoqf/src/UTest/utcov_cppunit -c -g -fprofile-arcs -ftest-coverage TestA.cpp -o TestA.o g++ -o UTest.out Main.o A.o TestA.o  -ldl -lgcov -lcppunit valgrind --tool=memcheck --leak-check=full ./UTest.out==31409== Memcheck, a memory error detector.==31409== Copyright (C) 2002-2006, and GNU GPL'd, by Julian Seward et al.==31409== Using LibVEX rev 1658, a library for dynamic binary translation.==31409== Copyright (C) 2004-2006, and GNU GPL'd, by OpenWorks LLP.==31409== Using valgrind-3.2.1, a dynamic binary instrumentation framework.==31409== Copyright (C) 2000-2006, and GNU GPL'd, by Julian Seward et al.==31409== For more details, rerun with: -v==31409== ..OK (2 tests)==31409== ==31409== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 19 from 1)==31409== malloc/free: in use at exit: 0 bytes in 0 blocks.==31409== malloc/free: 82 allocs, 82 frees, 9,807 bytes allocated.==31409== For counts of detected errors, rerun with: -v==31409== All heap blocks were freed -- no leaks are possible../gcov_checker 90 --objects Main.o A.o TestA.oCode coverage:Main.cpp:100.0%A.cpp:100.0%TestA.cpp:100.0%See *.gcov files for details.

 cppunit_compiled.zip  
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