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[test] Move the dev-only use cache test suite to test/development#96023

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hl/avoid-hmr-refresh-hash-cookiefrom
hl/move-use-cache-dev-test
Jul 22, 2026
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[test] Move the dev-only use cache test suite to test/development#96023
unstubbable merged 1 commit into
hl/avoid-hmr-refresh-hash-cookiefrom
hl/move-use-cache-dev-test

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The use-cache-dev suite only covers dev-mode HMR behavior of use cache, so it belongs under test/development/app-dir alongside the other cache-components-dev-* suites rather than in test/e2e. Because test/development runs only in dev mode and is never deployed, the production-mode placeholder guard, the skipDeployment option, and the if (skipped) early return are all dropped. The three test manifests that referenced the old path are updated.


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Tests Passed

Commit: 6d7c688

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Stats from current PR

🔴 2 regressions

Metric Canary PR Change Trend
node_modules Size 527 MB 527 MB 🔴 +121 kB (+0%) █████
Webpack Build Time (cached) 25.039s 25.969s 🔴 +930ms (+4%) ▁▁▁▁▁
📊 All Metrics
📖 Metrics Glossary

Dev Server Metrics:

  • Listen = TCP port starts accepting connections
  • First Request = HTTP server returns successful response
  • Cold = Fresh build (no cache)
  • Warm = With cached build artifacts

Build Metrics:

  • Fresh = Clean build (no .next directory)
  • Cached = With existing .next directory

Change Thresholds:

  • Time: Changes < 50ms AND < 10%, OR < 2% are insignificant
  • Size: Changes < 1KB AND < 1% are insignificant
  • All other changes are flagged to catch regressions

⚡ Dev Server

Metric Canary PR Change Trend
Cold (Listen) 809ms 810ms ▇▂▁▂▂
Cold (Ready in log) 769ms 768ms █▁▁▁▁
Cold (First Request) 1.285s 1.284s ▇▁▁▁▁
Warm (Listen) 762ms 761ms ▇▂▂▂▁
Warm (Ready in log) 763ms 761ms ▇▁▁▁▁
Warm (First Request) 1.275s 1.284s ▇▂▁▁▂
📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric Canary PR Change Trend
Cold (Listen) 762ms 813ms ▂▂▂▂▂
Cold (Ready in log) 764ms 781ms ▁▁▁▁▁
Cold (First Request) 3.388s 3.449s ▁▁▁▄▁
Warm (Listen) 811ms 813ms ▂▂▁▂▂
Warm (Ready in log) 769ms 786ms ▁▁▁▂▁
Warm (First Request) 3.329s 3.384s ▁▁▁▃▁

⚡ Production Builds

Metric Canary PR Change Trend
Fresh Build 5.008s 4.996s ▇▃▂▁▁
Cached Build 5.039s 5.031s ▇▃▁▁▁
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric Canary PR Change Trend
Fresh Build 25.552s 25.223s ▁▁▁▁▁
Cached Build 25.039s 25.969s 🔴 +930ms (+4%) ▁▁▁▁▁
node_modules Size 527 MB 527 MB 🔴 +121 kB (+0%) █████
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Canary PR Change
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Canary PR Change
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Edge SSR
Canary PR Change
edge-ssr.js gzip 128 kB 128 kB
page.js gzip 287 kB 287 kB
Total 415 kB 414 kB ✅ -595 B
Middleware
Canary PR Change
middleware-b..fest.js gzip 617 B 618 B
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Canary PR Change
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Total 718 B 718 B
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🔄 Shared (bundler-independent)

Runtimes
Canary PR Change
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app-page-exp..prod.js gzip 202 kB 202 kB
app-page-tur...dev.js gzip 365 kB 365 kB
app-page-tur..prod.js gzip 202 kB 202 kB
app-page-tur...dev.js gzip 362 kB 362 kB
app-page-tur..prod.js gzip 200 kB 200 kB
app-page.run...dev.js gzip 362 kB 362 kB
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app-route.ru..prod.js gzip 55.3 kB 55.4 kB
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pages-turbo...prod.js gzip 39.7 kB 39.7 kB
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pages.runtim..prod.js gzip 39.7 kB 39.7 kB
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use-cache-pr...dev.js gzip 71.6 kB 71.6 kB
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use-cache-pr...dev.js gzip 69.9 kB 69.9 kB
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📝 Changed Files (27 files)

Files with changes:

  • app-page-exp..ntime.dev.js
  • app-page-exp..time.prod.js
  • app-page-tur..ntime.dev.js
  • app-page-tur..time.prod.js
  • app-page-tur..ntime.dev.js
  • app-page-tur..time.prod.js
  • app-page.runtime.dev.js
  • app-page.runtime.prod.js
  • app-route-ex..ntime.dev.js
  • app-route-ex..time.prod.js
  • app-route-tu..ntime.dev.js
  • app-route-tu..time.prod.js
  • app-route-tu..ntime.dev.js
  • app-route-tu..time.prod.js
  • app-route.runtime.dev.js
  • app-route.ru..time.prod.js
  • pages-api-tu..ntime.dev.js
  • pages-api.runtime.dev.js
  • pages-api.ru..time.prod.js
  • pages-turbo...ntime.dev.js
  • ... and 7 more
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📎 Tarball URL
https://vercel-packages.vercel.app/next/commits/6d7c6889b89884d681e0689aedec4ce359d6c3fe/next

Commit: 6d7c688

The `use-cache-dev` suite only covers dev-mode HMR behavior of `use
cache`, so it belongs under `test/development/app-dir` alongside the
other `cache-components-dev-*` suites rather than in `test/e2e`. Because
`test/development` runs only in dev mode and is never deployed, the
production-mode placeholder guard, the `skipDeployment` option, and the
`if (skipped)` early return are all dropped. The three test manifests
that referenced the old path are updated.
@unstubbable
unstubbable force-pushed the hl/avoid-hmr-refresh-hash-cookie branch from d3e6dca to 72eadbc Compare July 21, 2026 22:14
@unstubbable
unstubbable force-pushed the hl/move-use-cache-dev-test branch from c5c95b1 to 6d7c688 Compare July 21, 2026 22:14
@unstubbable
unstubbable marked this pull request as ready for review July 22, 2026 07:18
@unstubbable
unstubbable requested a review from gaojude July 22, 2026 07:18
@unstubbable
unstubbable merged commit c3d5b92 into canary Jul 22, 2026
171 of 187 checks passed
@unstubbable
unstubbable deleted the hl/move-use-cache-dev-test branch July 22, 2026 13:50
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