追加多个测试用例，确保上传部分的质量

[bachue]

[codecov[bot]]

Codecov Report

Merging #410 (40aa930) into master (c160e08) will increase coverage by 0.89%. The diff coverage is 90.51%.

@@            Coverage Diff             @@
##           master     #410      +/-   ##
==========================================
+ Coverage   68.58%   69.48%   +0.89%     
==========================================
  Files          20       20              
  Lines        1891     1976      +85     
==========================================
+ Hits         1297     1373      +76     
- Misses        594      603       +9     

Impacted Files	Coverage Δ
test_qiniu.py	93.32% <90.51%> (-0.76%)	:arrow_down:

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