Speed up CI with parallel test execution #2455
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Resolves issues with two failing feature tests that were timing-dependent when interacting with Chosen.js select dropdowns. Changes: - Rewrote select_from_chosen helper to use JavaScript instead of simulating clicks - Increased Capybara.default_max_wait_time to 5 seconds for JS tests - Added explicit waits for Chosen dropdown initialization - Used select_from_chosen helper consistently across tests The new approach directly sets select values via JavaScript and triggers Chosen's update events, avoiding race conditions from clicking and typing into the animated dropdown UI. All 777 tests now pass consistently with seed 63863.
Suppress Puma startup messages during test runs to reduce noise and make test output easier to read.
Configure parallel test execution to speed up CI builds and local test runs. ## Changes - Add parallel_tests gem for running tests concurrently - Configure database.yml to support TEST_ENV_NUMBER for parallel databases - Update GitHub Actions workflow to run tests across 4 parallel runners - Configure SimpleCov to merge coverage results from parallel runs ## Local Usage Run tests in parallel with 4 processes: ``` bundle exec parallel_rspec spec/ -n 4 ``` Run with a specific seed: ``` bundle exec parallel_rspec spec/ -n 4 -o '--seed 1234' ``` One-time setup (creates test, test2, test3, test4 databases): ``` bundle exec rake parallel:setup ``` ## Performance Local verification shows 1.84x speedup (162s → 88s) with identical coverage results (95.19%). Expected similar speedup in CI.
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Configure SimpleCov to generate unique coverage files for each parallel CI runner and merge them for reporting. Changes: - Detect CI parallel execution via CI_NODE_INDEX environment variable - Generate unique command names (RSpec-0, RSpec-1, etc.) per runner - Preserve resultset files immediately after test completion - Merge all resultsets in separate coverage job before reporting Local parallel execution still works using TEST_ENV_NUMBER detection.
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Improves CI speedup from 1.84x to 2.35x based on local testing. Each runner now handles ~17 specs instead of ~26.
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The branch for this PR was branched from #2453, please review and merge that one first and then rebase this one.
Summary
Changes
Local Usage
Run tests in parallel:
bundle exec parallel_rspec spec/ -n 4Run with specific seed:
One-time setup:
bundle exec rake parallel:setupPerformance
Local verification shows 1.84x speedup (162s → 88s) with identical coverage results (95.19%).
Expected similar speedup in CI pipeline.
Test Plan