fix test

[helloyou2012]

fix #27

[mention-bot]

@helloyou2012, thanks for your PR! By analyzing the history of the files in this pull request, we identified @fengmk2 to be a potential reviewer.

[helloyou2012]

appveyor 的 CI 请求超时了 😓

[codecov-io]

Current coverage is 89.34% (diff: 100%)

Merging #115 into master will decrease coverage by 0.62%

@@             master       #115   diff @@
==========================================
  Files             8          8          
  Lines           349        338    -11   
  Methods          43         43          
  Messages          0          0          
  Branches        100         88    -12   
==========================================
- Hits            314        302    -12   
- Misses           35         36     +1   
  Partials          0          0          

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[fengmk2]

@helloyou2012 很棒！ci 过了就合并。

[fengmk2]

我看只是2个 task 并行冲突的问题，没问题了，我合并一下。

[fengmk2]

+1