deleted any test article, and update first-article
file target to get_commit_file, add process about behavior when raised OSError, etc
Implement Update History
Implement Update History
Create PreCommitScriptTester and PostMergeScriptTester
re-initialize tester, and Append process about import hook script
Use assertEqual, and create rev-parse tester
Write document in class
Create _boolize method: Change bool string to bool variable
Add test_StagedFile
Add test_GitError
Add test_convert
Add test_DecideHtmlFname
Add test_IsUpgrade
Add test_Log, and Create assertPrintEqual method: get output value on stdout, and compare string.
rename tfp -> io
Add test_Warning, test_RowWarning
Delete article
Merge <unittest>:Complete write PreCommitScriptTester. Fixes #30