Reflect enum type

[bbbgan]

No description provided.

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.58% 🎉

Comparison is base (b262d32) 42.94% compared to head (46a80ec) 43.52%.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #204      +/-   ##
==========================================
+ Coverage   42.94%   43.52%   +0.58%     
==========================================
  Files          44       45       +1     
  Lines        5305     5333      +28     
==========================================
+ Hits         2278     2321      +43     
+ Misses       3027     3012      -15     

Files Changed	Coverage Δ
iguana/json_util.hpp	20.00% <ø> (ø)
test/test_util.cpp	100.00% <ø> (ø)
iguana/enum_reflection.hpp	100.00% <100.00%> (ø)
iguana/json_reader.hpp	87.96% <100.00%> (+12.53%)	⬆️
iguana/json_writer.hpp	100.00% <100.00%> (ø)
test/test.cpp	100.00% <100.00%> (ø)
test/unit_test.cpp	99.65% <100.00%> (+<0.01%)	⬆️

... and 2 files with indirect coverage changes

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[qicosmos]

你是假定enum 值是连续的吗？enum 的值不一定是连续的，可能是200, 400, 500, 甚至更大，还有可能是负数。

[qicosmos]

这个分支覆盖到了吗，确保每个分支都覆盖到。