虽然不同程序的单元测试代码不尽相同，但测试代码的框架却非常相似，于是便出现了一些单元测试类库，CppUnit便是其中之一。-Although the unit test code in different programs vary, but the test code is very similar to the fr a mework, there will be some unit test library, CppUnit is one of them.