软件测试

testing overview

standard define
a process of analyzing a software item to detect the differences between existing and required conditions( that is defect /errors/bugs...) and to evaluate the features of the software item.

deffrence between software item and software
动态执行《==》静态分析
item将狭义的 动态执行代码，扩展到 软件开发的任何产品

what is defect

defect~=bug

• fault故障: occurs in the process of writing a program.
• error错误: is the manifestation of one or more faults (internal state )
  如果程序未执行，就是fault，如果被执行到了就是error
• failure失效/
• incident事故

software defect definition

• all kind of software problems
• exist in code, data and documents
• out of accord with user expection

who does testing ?

• software tester
• software developer:unit testing
• project lead/manager
• end user

crowdsourcing testing （众包测试） 《-》外包,类似

特点：

• 成本小，多样性，
• 测试方案多种多样

when to start testing

the earlier ,the better

when to end testing

testing is a never ending process (在软件生命周期内)

some aspects

• testing deadlines
• management decision

结束测试原因的分类：

• completion of test case execution
• completion of functional and code coverage to certain point
• bug rate falls velow a certion level and no high priority bugs are identified

PDCA:
P
D
C
A