add:添加测试

[TomYule]

add:添加测试:ImagesTest,NutRunner,NutValidate

[codecov-io]

Codecov Report

Merging #1538 into master will increase coverage by 1.37%.
The diff coverage is 0%.

@@            Coverage Diff            @@
##           master   #1538      +/-   ##
=========================================
+ Coverage   47.62%     49%   +1.37%     
=========================================
  Files         868     868              
  Lines       36383   36402      +19     
  Branches     7869    7873       +4     
=========================================
+ Hits        17329   17837     +508     
+ Misses      16741   16187     -554     
- Partials     2313    2378      +65

Impacted Files	Coverage Δ
src/org/nutz/runner/NutRunner.java	59.42% <0%> (+59.42%)	⬆️
src/org/nutz/dao/pager/Pager.java	43.13% <0%> (ø)	⬆️
src/org/nutz/lang/socket/Sockets.java	63.8% <0%> (-2.86%)	⬇️
src/org/nutz/lang/Files.java	21.28% <0%> (+0.22%)	⬆️
src/org/nutz/lang/util/NutMap.java	19.67% <0%> (+0.23%)	⬆️
src/org/nutz/lang/Streams.java	51.03% <0%> (+1.03%)	⬆️
src/org/nutz/dao/impl/FileSqlManager.java	69.62% <0%> (+1.52%)	⬆️
src/org/nutz/log/impl/AbstractLog.java	40% <0%> (+2.22%)	⬆️
src/org/nutz/mvc/view/HttpEnhanceResponse.java	26.72% <0%> (+2.58%)	⬆️
src/org/nutz/filepool/NutFilePool.java	56.73% <0%> (+6.73%)	⬆️
... and 24 more

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