答：白盒测试和黑盒测试是根据对软件代码的可见性，采用的测试方法；凡是针对代码本身的测试，都可以看做是白盒测试，凡是不考虑代码如何实现，只对代码能实现的功能进行的测试都可以看作黑盒测试。
black box testing focus on functional requirements,attempts to find following errors:
1.incorrect or missing functions;
2.interfaces errors;
3.errors in data structu
...black box testing focus on functional requirements,attempts to find following errors:
1.incorrect or missing functions;
2.interfaces errors;
3.errors in data structu