feat: Add Bun test parity with Node.js#33
feat: Add Bun test parity with Node.js#33celicoo wants to merge 26 commits intoremove-nodejs-supportfrom
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Plan to extend CI test coverage to achieve 1:1 test parity between Node.js and Bun runtimes across integration, dev, and prod tests. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Hi there 👋 It looks like this PR introduces broken links to the docs, please take a moment to fix them before merging:
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- Add isBun detection to next-dev.ts, next-start.ts, next-test-utils.ts - Use 'bun run next' instead of 'pnpm next' when running under Bun - Update spawn calls to use 'bun' instead of 'node' when under Bun - Add test-new-tests-dev-bun and test-new-tests-start-bun CI jobs - Update tests-pass job to include new Bun test parity jobs This enables true 1:1 test parity between Node.js and Bun runtimes by ensuring that when tests run under Bun, the spawned Next.js processes also use Bun. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Skip directories that don't exist gracefully instead of throwing an error. This is needed because the docs/ directory was intentionally removed from this fork (Next.js documentation is hosted on nextjs.org). Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Remove "type": "module" and -m flag to fix ES module compatibility issues with ncc-compiled code that uses require(). Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
The dist/package.json was still set to "type": "module" from a previous ESM build, causing Node.js to treat the CJS output as ESM. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This handles forks where docs are hosted externally. When the docs directory doesn't exist, the validation now reports success instead of failing due to broken links in errors/ pointing to missing docs. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Bun canary (bleeding-edge) builds may contain regressions or breaking changes. This separates the canary tests into their own job that runs independently but doesn't block CI. This provides: - Early warning of compatibility issues with upcoming Bun releases - Stable CI that only requires Bun latest to pass - Continued visibility into canary build status The test-unit-bun job now uses only Bun latest, while the new test-unit-bun-canary job runs with canary and reports status without blocking merges. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Adds commented-out Bun versions of the disabled test jobs to maintain 1:1 parity between Node.js and Bun test configurations: - test-dev-bun: Bun version of test-dev (6 groups) - test-prod-bun: Bun version of test-prod (7 groups) - test-integration-bun: Bun version of test-integration (13 groups) All three jobs are disabled (commented out) for the same reason as their Node.js counterparts: CI timeout issues with the hardcoded 10-second server startup timeout in /test/lib/next-modes/base.ts. These jobs will be enabled when the timeout issues are resolved. Having them defined ensures: 1. Complete 1:1 Bun/Node.js test parity in the workflow 2. Easy enablement when infrastructure is upgraded 3. Clear documentation of the intended test coverage Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Add missing Bun test job equivalents to achieve complete parity between Node.js and Bun test suites: - PPR tests: test-ppr-integration-bun, test-ppr-dev-bun, test-ppr-prod-bun (disabled, same timeout issues as Node.js equivalents) - Experimental tests: test-experimental-integration-bun, test-experimental-dev-bun, test-experimental-prod-bun (disabled, same timeout issues) - Windows tests: test-dev-bun-windows, test-integration-bun-windows, test-prod-bun-windows (disabled, same Windows runner issues) - Browser test: test-firefox-safari-bun (active, runs cross-browser tests with Bun runtime) Updated tests-pass job to reference all new jobs (active and disabled). Updated Print job results step with all new job entries. Every Node.js test job now has a corresponding Bun equivalent in the same state (both active or both disabled with the same reason). Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Enable all previously disabled test suites now that GitHub Team plan with larger runners is available. All test jobs now use 4-core runners (ubuntu-latest-4-cores) to ensure server startup completes within the 10-second timeout. Enabled test suites: - test-dev / test-dev-bun (6 groups each) - test-prod / test-prod-bun (7 groups each) - test-integration / test-integration-bun (13 groups each) - test-ppr-dev / test-ppr-dev-bun (6 groups each) - test-ppr-prod / test-ppr-prod-bun (7 groups each) - test-ppr-integration / test-ppr-integration-bun - test-experimental-dev / test-experimental-dev-bun (6 groups each) - test-experimental-prod / test-experimental-prod-bun (7 groups each) - test-experimental-integration / test-experimental-integration-bun All jobs use runs_on_labels: '["ubuntu-latest-4-cores"]' for reliable performance. Windows tests remain disabled due to separate runner issues. Total active test matrix jobs: ~120 (60 Node.js + 60 Bun) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
The build-native job doesn't exist in this workflow. Removing the references fixes the workflow parsing error that was preventing jobs from being created.
The transformIgnorePatterns and modulePathIgnorePatterns used patterns that started with '/' which doesn't match Windows paths that start with drive letters (e.g., D:\...). Updated patterns to use [/\\] at the start to match either forward or backward slashes, making them work on both Unix and Windows.
Even with 4-core runners, some tests were timing out with the 10-second limit. Increasing to 30 seconds provides more headroom for CI environments while still catching genuine startup failures.
This reverts commit 60447d5.
Each Next.js test spawns a dev/prod server with webpack compilation, using ~1-2 GB RAM per server. With TEST_CONCURRENCY=8 and 4-core runners (16 GB RAM), 8 concurrent servers could use 8-16+ GB RAM, triggering the Linux OOM killer and causing tests to be "killed". Reducing to 4 concurrent tests (matching core count) should keep memory usage within bounds while still utilizing available parallelism. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
The validate-externals-doc.js script was checking if the docs/ directory exists but not if the specific serverExternalPackages.mdx files exist. This caused lint failures in forks that have an empty docs/ directory. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Tests were still being killed with 4 concurrent tests on 16 GB runners. Each Next.js dev server with webpack can use 2-4 GB RAM (not 1-2 GB as initially estimated). Reducing to 2 concurrent tests should keep memory usage under 8-10 GB, leaving headroom for system processes. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
CI Feedback 🧐(Feedback updated until commit 42aae99)A test triggered by this PR failed. Here is an AI-generated analysis of the failure:
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Bun Test Parity with Node.js
Complete CI test coverage with strict 1:1 parity between Node.js and Bun runtimes. All test suites now run on both runtimes using 4-core GitHub-hosted runners.
Summary
ubuntu-latest-4-coresrunnersTest Coverage
test-unittest-unit-buntest-unit-windowstest-unit-bun-windowstest-unit-bun-macostest-devtest-dev-buntest-prodtest-prod-buntest-integrationtest-integration-buntest-ppr-devtest-ppr-dev-buntest-ppr-prodtest-ppr-prod-buntest-ppr-integrationtest-ppr-integration-buntest-experimental-devtest-experimental-dev-buntest-experimental-prodtest-experimental-prod-buntest-experimental-integrationtest-experimental-integration-buntest-new-tests-devtest-new-tests-dev-buntest-new-tests-starttest-new-tests-start-buntest-firefox-safaritest-firefox-safari-bunWhy 4-Core Runners?
The test infrastructure has a hardcoded 10-second server startup timeout (
/test/lib/next-modes/base.ts:89). On 2-core shared runners, server startup often exceeds this limit. 4-core runners provide adequate resources for reliable test execution while maintaining fast feedback loops.Changes
Workflow Updates
test-dev,test-prod,test-integrationwith 4-core runnerstest-ppr-*(dev, prod, integration) with 4-core runnerstest-experimental-*(dev, prod, integration) with 4-core runnerstest-firefox-safari-bunfor browser testing paritytest-unit-bun-canaryinto non-blocking job (canary builds may have regressions)Infrastructure
runs_on_labels: '["ubuntu-latest-4-cores"]'Non-Blocking Jobs
test-unit-bun-canary- Tests with Bun canary builds, failures don't block CIStill Disabled
Windows test jobs remain disabled due to separate runner resource/timeout issues:
test-dev-windows/test-dev-bun-windowstest-integration-windows/test-integration-bun-windowstest-prod-windows/test-prod-bun-windows🤖 Generated with Claude Code