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Rubocop: handle empty 'files' array in output 

The handler previously assumed there would be at least one entry in the
'files' array in the output JSON. It looks like this in the normal case:

  "files":[{"path":"app/models/image.rb","offenses":[]}]

But if RuboCop's config excludes the specified input files, causing no
files to be linted, the output is emptier:

  "files":[]

This change causes the handler to treat that case correctly, and also
exit early if the reported offense_count is zero.
This commit is contained in:
Eddie Lebow 2017-07-12 19:42:54 -04:00
parent 5885954197
commit dcbb0ffee5
2 changed files with 18 additions and 0 deletions
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4
ale_linters/ruby/rubocop.vim
View File

@ -28,6 +28,10 @@ function! ale_linters#ruby#rubocop#Handle(buffer, lines) abort
\}]
endtry
if l:errors['summary']['offense_count'] == 0 || empty(l:errors['files'])
return []
endif
let l:output = []
for l:error in l:errors['files'][0]['offenses']

14
test/handler/test_rubocop_handler.vader
View File

@ -41,6 +41,20 @@ Execute(The rubocop handler should parse lines correctly):
\ '{"metadata":{"rubocop_version":"0.47.1","ruby_engine":"ruby","ruby_version":"2.1.5","ruby_patchlevel":"273","ruby_platform":"x86_64-linux-gnu"},"files":[{"path":"my_great_file.rb","offenses":[{"severity":"convention","message":"Prefer single-quoted strings...","cop_name":"Style/SomeCop","corrected":false,"location":{"line":83,"column":29,"length":7}},{"severity":"fatal","message":"Some error","cop_name":"Style/SomeOtherCop","corrected":false,"location":{"line":12,"column":2,"length":1}},{"severity":"warning","message":"Regular warning","cop_name":"Style/WarningCop","corrected":false,"location":{"line":10,"column":5,"length":8}},{"severity":"error","message":"Another error","cop_name":"Style/SpaceBeforeBlockBraces","corrected":false,"location":{"line":11,"column":1,"length":1}}]}],"summary":{"offense_count":4,"target_file_count":1,"inspected_file_count":1}}'
\ ])
Execute(The rubocop handler should handle when files are checked and no offenses are found):
AssertEqual
\ [],
\ ale_linters#ruby#rubocop#Handle(347, [
\ '{"metadata":{"rubocop_version":"0.47.1","ruby_engine":"ruby","ruby_version":"2.1.5","ruby_patchlevel":"273","ruby_platform":"x86_64-linux-gnu"},"files":[{"path":"my_great_file.rb","offenses":[]}],"summary":{"offense_count":0,"target_file_count":1,"inspected_file_count":1}}'
\ ])
Execute(The rubocop handler should handle when no files are checked):
AssertEqual
\ [],
\ ale_linters#ruby#rubocop#Handle(347, [
\ '{"metadata":{"rubocop_version":"0.47.1","ruby_engine":"ruby","ruby_version":"2.1.5","ruby_patchlevel":"273","ruby_platform":"x86_64-linux-gnu"},"files":[],"summary":{"offense_count":0,"target_file_count":0,"inspected_file_count":0}}'
\ ])
Execute(Parse errors should be handled for rubocop):
let g:lines = [
\ '/my/project/.rubocop.yml: Layout/MultilineOperationIndentation has the wrong namespace - should be Style',