标签：style blog http color io 使用 ar for 文件
本文将介绍如何使用gtest进行单元测试.
gtest是google单元测试框架.使用非常方便.
首先,下载gtest (有些google项目包含gtest,如 protobuf),复制目录即可使用.
http://code.google.com/p/googletest/
如果被墙,就百度搜下,很多.
解压 gtest.zip, 得到gtest.1.x.x目录.
export GTEST_HOME=该目录
编译:
cd $GTEST_HOME/make
make
运行示例程序, 熟悉 gtest风格
./sample1_unittes
编译后还会得到一个 gtest_main.a 的静态库.
ln -s gtest_main.a libgtest.a
软链接以便符合 gcc 库引用规范.
按 sample1_unittes.cc 写好自己的测试代码(test.cpp)后,就可以开始编译
g++ -I$GTEST_HOME/include -L$GTEST_HOME/make -lgtest test.cpp -o test.exe
生成测试程序 test.exe
组合数计算代码 combination.cpp:
#include <stdio.h> #include <stdlib.h> #include <string.h> #include "combination.h" long combination(long base,long select) { long res=0; if(base<select || base <= 0) return 0; if(base==select) return 1; if(select >= base - select) { res=arrangement(select+1,base) / arrangement (1,base - select); } else { res=arrangement(base-select+1,base) / arrangement (1,select); } return res; } long arrangement(long start,long end) { if( start <= 0 || start > end) { return 1; } long res=start; for(long i=start+1;i<=end;i++) { res*=i; } return res; }
头文件combination.h:
long combination(long base,long select); long arrangement(long start,long end);
测试代码 gtest_combination.cpp
#include <limits.h> #include "combination.h" #include <gtest/gtest.h> TEST(arrangement, all) { EXPECT_EQ(1, arrangement(0,1)); EXPECT_EQ(1, arrangement(1,1)); EXPECT_EQ(1, arrangement(1,0)); EXPECT_EQ(1, arrangement(5,0)); EXPECT_EQ(2, arrangement(2,2)); EXPECT_EQ(24, arrangement(2,4)); EXPECT_EQ(120, arrangement(1,5)); EXPECT_EQ(7*8*9, arrangement(7,9)); } TEST(combination, all) { EXPECT_EQ(0, combination(0,1)); EXPECT_EQ(0, combination(0,0)); EXPECT_EQ(0, combination(-1,1)); EXPECT_EQ(0, combination(1,2)); EXPECT_EQ(1, combination(1,1)); EXPECT_EQ(2, combination(2,1)); EXPECT_EQ(3, combination(3,1)); EXPECT_EQ(1, combination(2,2)); EXPECT_EQ(3, combination(3,2)); EXPECT_EQ(1, combination(3,3)); EXPECT_EQ(1, combination(4,0)); EXPECT_EQ(4, combination(4,1)); EXPECT_EQ(6, combination(4,2)); EXPECT_EQ(4, combination(4,3)); EXPECT_EQ(1, combination(4,4)); EXPECT_EQ(0, combination(4,5)); EXPECT_EQ(84, combination(9,3)); }
Makefile:
TEST=gtest_combination
TESTOBJ=$(TEST).o
TAROBJ=combination.o
all: $(TEST)
$(TEST): $(TESTOBJ) $(TAROBJ)
g++ -I$(GTEST_HOME)/include -L$(GTEST_HOME)/make -lgtest $^ -o $@
%.o: %.cpp
g++ -c -I$(GTEST_HOME)/include -g -o $@ $<
编译及测试:
$make
$gtest_combination
输出结果:
Running main() from gtest_main.cc
[==========] Running 2 tests from 2 test cases.
[----------] Global test environment set-up.
[----------] 1 test from arrangement
[ RUN ] arrangement.all
[ OK ] arrangement.all (0 ms)
[----------] 1 test from arrangement (0 ms total)
[----------] 1 test from combination
[ RUN ] combination.all
[ OK ] combination.all (0 ms)
[----------] 1 test from combination (0 ms total)
[----------] Global test environment tear-down
[==========] 2 tests from 2 test cases ran. (6 ms total)
[ PASSED ] 2 tests.
标签：style blog http color io 使用 ar for 文件
原文地址：http://www.cnblogs.com/aauutthh/p/3949246.html
