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[Fix #1078] Fix false negative for Rails/LexicallyScopedActionFilter #1100

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vlad-pisanov
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Resolves #1078

This PR fixes the edge case where the class/module body does not define any methods at all.


Before submitting the PR make sure the following are checked:

  • The PR relates to only one subject with a clear title and description in grammatically correct, complete sentences.
  • Wrote good commit messages.
  • Commit message starts with [Fix #issue-number] (if the related issue exists).
  • Feature branch is up-to-date with master (if not - rebase it).
  • Squashed related commits together.
  • Added tests.
  • Ran bundle exec rake default. It executes all tests and runs RuboCop on its own code.
  • Added an entry (file) to the changelog folder named {change_type}_{change_description}.md if the new code introduces user-observable changes. See changelog entry format for details.
  • If this is a new cop, consider making a corresponding update to the Rails Style Guide.

Comment on lines +129 to +133
unmatched_methods = array_values(methods_node) - defined_action_methods
return if unmatched_methods.empty?

message = message(methods, parent)
add_offense(node, message: message) unless methods.empty?
message = message(unmatched_methods, parent)
add_offense(node, message: message)
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minor readability/performance improvement

@koic koic merged commit 9d1a400 into rubocop:master Aug 31, 2023
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koic commented Aug 31, 2023

Thanks!

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Cop idea: Lexically Scoped Action Filter cop
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