我见过测试覆盖率达95%的代码库每周都会发布严重bug。也见过覆盖率仅40%的代码库却极少出问题。
问题不在于数字本身，而在于对数字的执念。
覆盖率陷阱
下面这个测试能提高覆盖率，但抓不住任何问题：
Reader route
article -> proof -> offer
cluster
Testing & QA
intent
Testing
route
next step
What to do with this
Turn the note into a build path.
If this topic maps to a real business problem, keep reading the cluster, study the academy path, or route the work into a scoped engagement.
