feat(test runner): server side mocking

[Skn0tt]

Implements #30766.

Adds an HTTP proxy that application servers can route their network traffic through to make it subject to Playwright routes.

[github-actions]

Test results for "tests 1"

1 failed
❌ [webkit-library] › tests/library/video.spec.ts:441:5 › screencast › should work for popups @webkit-ubuntu-22.04-node18

23 flaky

⚠️ [firefox-page] › tests/page/page-evaluate.spec.ts:403:3 › should throw for too deep reference chain @firefox-ubuntu-22.04-node18
⚠️ [playwright-test] › tests/ui-mode-test-watch.spec.ts:145:5 › should watch all @macos-latest-node18-1
⚠️ [playwright-test] › tests/ui-mode-test-watch.spec.ts:145:5 › should watch all @ubuntu-latest-node20-1
⚠️ [webkit-library] › tests/library/browsercontext-viewport-mobile.spec.ts:65:5 › mobile viewport › should detect touch when applying viewport with touches @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/browsercontext-viewport-mobile.spec.ts:87:5 › mobile viewport › should support window.orientation emulation @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/browsercontext-viewport-mobile.spec.ts:97:5 › mobile viewport › should fire orientationchange event @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/browsercontext-viewport-mobile.spec.ts:124:5 › mobile viewport › respect meta viewport tag @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/browsercontext-viewport-mobile.spec.ts:157:5 › mobile viewport › mouse should work with mobile viewports and cross process navigations @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/browsertype-connect.spec.ts:188:5 › launchServer › should be able to visit ipv6 through localhost @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/defaultbrowsercontext-2.spec.ts:28:3 › should work in persistent context @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/popup.spec.ts💯3 › should inherit touch support from browser context @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/popup.spec.ts:115:3 › should inherit viewport size from browser context @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/popup.spec.ts:129:3 › should use viewport size from window features @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/proxy.spec.ts:178:3 › should exclude patterns @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/screenshot.spec.ts:44:14 › page screenshot › should work with a mobile viewport @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/screenshot.spec.ts:291:14 › element screenshot › should restore viewport after page screenshot and timeout @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/trace-viewer.spec.ts:149:1 › should open simple trace viewer @webkit-ubuntu-22.04-node18
⚠️ [webkit-library] › tests/library/video.spec.ts:411:5 › screencast › should capture css transformation @webkit-ubuntu-22.04-node18
⚠️ [webkit-page] › tests/page/page-leaks.spec.ts:82:5 › click should not leak @webkit-ubuntu-22.04-node18
⚠️ [webkit-page] › tests/page/page-leaks.spec.ts:107:5 › fill should not leak @webkit-ubuntu-22.04-node18
⚠️ [webkit-page] › tests/page/page-leaks.spec.ts:161:5 › waitFor should not leak @webkit-ubuntu-22.04-node18
⚠️ [webkit-page] › tests/page/page-screenshot.spec.ts:868:5 › page screenshot animations › should wait for fonts to load @webkit-ubuntu-22.04-node18
⚠️ [playwright-test] › tests/ui-mode-test-watch.spec.ts:145:5 › should watch all @windows-latest-node18-1

37763 passed, 661 skipped
✔️✔️✔️

Merge workflow run.