Benoit/experimental vite test runner

[BenoitZugmeyer]

Patou test runner

Motivation

Features

• communication channel between the CLI and browser execution
• command line arguments:--watch, --spec, --seed, --stop-on-failure
• exit (with exit code) when the test suite finishes
• display execution status in CLI output
• capture console logs and uncaught errors and stuff and print them in the CLI output (with sourcemap support)
• junit reporter to upload to datadog
• istanbul test coverage
• find a good name
• run tests on browser stack
• make it a library
• user agent parser to display the browser name/version

Changes

Test instructions

Checklist

• Tested locally
• Tested on staging
• Added unit tests for this change.
• Added e2e/integration tests for this change.
• Updated documentation and/or relevant AGENTS.md file

[datadog-official]

✅ Tests

🎉 All green!

❄️ No new flaky tests detected
🧪 All tests passed

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 67c3ceb | Docs | Datadog PR Page | Was this helpful? Give us feedback!}

[cit-pr-commenter-54b7da]

Bundles Sizes Evolution

📦 Bundle Name	Base Size	Local Size	𝚫	𝚫%	Status
Rum	168.98 KiB	168.97 KiB	-3 B	-0.00%	✅
Rum Profiler	4.31 KiB	4.31 KiB	0 B	0.00%	✅
Rum Recorder	24.54 KiB	24.54 KiB	0 B	0.00%	✅
Logs	56.27 KiB	56.27 KiB	-3 B	-0.01%	✅
Flagging	944 B	944 B	0 B	0.00%	✅
Rum Slim	125.82 KiB	125.82 KiB	-3 B	-0.00%	✅
Worker	23.63 KiB	23.63 KiB	0 B	0.00%	✅

🚀 CPU Performance

Action Name	Base CPU Time (ms)	Local CPU Time (ms)	𝚫%
RUM - add global context	0.0051	0.0053	+3.92%
RUM - add action	0.0186	0.0155	-16.67%
RUM - add error	0.016	0.0198	+23.75%
RUM - add timing	0.0033	0.0033	0.00%
RUM - start view	0.0169	0.0162	-4.14%
RUM - start/stop session replay recording	0.0009	0.0009	0.00%
Logs - log message	0.0205	0.0175	-14.63%

🧠 Memory Performance

Action Name	Base Memory Consumption	Local Memory Consumption	𝚫
RUM - add global context	27.78 KiB	26.95 KiB	-844 B
RUM - add action	52.25 KiB	51.32 KiB	-948 B
RUM - add timing	26.63 KiB	27.45 KiB	+833 B
RUM - add error	56.50 KiB	55.87 KiB	-645 B
RUM - start/stop session replay recording	25.49 KiB	26.48 KiB	+1006 B
RUM - start view	452.97 KiB	458.29 KiB	+5.33 KiB
Logs - log message	46.33 KiB	45.14 KiB	-1.19 KiB

🔗 RealWorld