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Patch #44116 » 0001-Enable-parallel-tests-only-in-test-workflow.patch

Katsuya HIDAKA, 2026-06-02 09:13

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.github/workflows/tests.yml
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          db-type: ${{ matrix.db }}
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          ruby-version: ${{ matrix.ruby }}
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      - name: Enable parallel tests

  		




  
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        run: echo "PARALLEL_WORKERS=$(nproc)" >> $GITHUB_ENV

  		




  
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      - name: Run tests

  		




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        run: |

  		




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          bin/rails test

  		












  

    
      doc/RUNNING_TESTS
    
  





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You can run `ruby test/unit/issue_test.rb` for running a single test case and

  		




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`ruby test/unit/issue_test.rb -n test_create` for running a single test.

  		




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Tests run in parallel by default, using the number of processors as the worker

  		




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count. You can change the worker count by setting the PARALLEL_WORKERS

  		




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environment variable:

  		




  
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You can run tests in parallel by setting the PARALLEL_WORKERS environment

  		




  
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variable:

  		




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`PARALLEL_WORKERS=8 bin/rails test`

  		




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Before running tests, you need to configure both development

  		












  

    
      test/application_system_test_case.rb
    
  





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require_relative 'test_helper'

  		




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class ApplicationSystemTestCase < ActionDispatch::SystemTestCase

  		




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  parallelize(workers: 1)

  		




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  DOWNLOADS_PATH = File.expand_path(File.join(Rails.root, 'tmp', 'downloads'))

  		




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  # Allow running Capybara default server on custom IP address and/or port

  		












  

    
      test/test_helper.rb
    
  





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end

  		




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class ActiveSupport::TestCase

  		




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  parallelize(workers: :number_of_processors)

  		




  
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  parallelize(workers: 1)

  		




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  include ActionDispatch::TestProcess

  		




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