modify the cat test
Merge branch 'biz' of code.dianpingoa.com:arch/cat into biz
Merge branch 'biz' of ssh://code.dianpingoa.com/arch/cat into biz
modify the test case exception
fix metric analyzer test error
Merge branch 'biz' of code.dianpingoa.com:arch/cat into biz
cover more code lines in DependencyAnalyzer
refine unit tests
fix potential concurrency bug for LocalMessageBucket
remove unneccessary local variables
remove unnecessary null check