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Fix a false negative for Performance/RegexpMatch #61

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@koic koic commented Jun 6, 2019

Follow up rubocop/rubocop#7081.

This PR fixes a false negartive for Performance/RegexpMatch when using RuboCop 0.71 or higher.

This causes CI to fail.
https://circleci.com/gh/rubocop-hq/rubocop-performance/588

This is a regression similar to #47. This PR tries to fix it using a node pattern that has been used for a long time.


Before submitting the PR make sure the following are checked:

  • 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.
  • Added an entry to the Changelog if the new code introduces user-observable changes. See changelog entry format.
  • The PR relates to only one subject with a clear title
    and description in grammatically correct, complete sentences.
  • Run bundle exec rake default. It executes all tests and RuboCop for itself, and generates the documentation.

Follow up rubocop/rubocop#7081.

This PR fixes a false negartive for `Performance/RegexpMatch` when using
RuboCop 0.71 or higher.

This causes CI to fail.
https://circleci.com/gh/rubocop-hq/rubocop-performance/588

This is a regression similar to rubocop#47. This PR tries to fix it using
a node pattern that has been used for a long time.
@koic koic merged commit 85be960 into rubocop:master Jun 8, 2019
@koic koic deleted the fix_a_false_negative_for_performance_regexp_match branch June 8, 2019 00:55
yahonda added a commit to yahonda/oracle-enhanced that referenced this pull request Sep 9, 2019
* Use RuboCop Performance 1.4.1
* Refer rubocop/rubocop-performance#61 and/or rubocop/rubocop-performance#73

```ruby
$ bundle exec rubocop -a
Inspecting 66 files
..........C..C..C......C.................C........................

Offenses:

lib/active_record/connection_adapters/oracle_enhanced/database_statements.rb:68:21: C: [Corrected] Performance/RegexpMatch: Use match? instead of =~ when MatchData is not used.
          return if sql =~ /FROM all_/
                    ^^^^^^^^^^^^^^^^^^
lib/active_record/connection_adapters/oracle_enhanced/jdbc_connection.rb:241:26: C: [Corrected] Performance/RegexpMatch: Use match? instead of =~ when MatchData is not used.
            raise unless e.message =~ /^(Closed Connection|Io exception:|No more data to read from socket|IO Error:)/
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
lib/active_record/connection_adapters/oracle_enhanced/oci_connection.rb:321:35: C: [Corrected] Performance/RegexpMatch: Use match? instead of =~ when MatchData is not used.
            host = "[#{host}]" if host =~ /^[^\[].*:/  # IPv6
                                  ^^^^^^^^^^^^^^^^^^^
lib/active_record/connection_adapters/oracle_enhanced/oci_connection.rb:323:46: C: [Corrected] Performance/RegexpMatch: Use match? instead of match when MatchData is not used.
            database = "/#{database}" unless database.match(/^\//)
                                             ^^^^^^^^^^^^^^^^^^^^^
lib/active_record/connection_adapters/oracle_enhanced/schema_statements.rb:650:46: C: [Corrected] Performance/RegexpMatch: Use match? instead of =~ when MatchData is not used.
              field["data_default"] = nil if field["data_default"] =~ /^(null|empty_[bc]lob\(\))$/i
                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
spec/active_record/connection_adapters/oracle_enhanced/connection_spec.rb:183:58: C: [Corrected] Performance/RegexpMatch: Use match? instead of match when MatchData is not used.
      params[:database] = "/#{params[:database]}" unless params[:database].match(/^\//)
                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

66 files inspected, 6 offenses detected, 6 offenses corrected
$
```
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