feat(recherche): mise en place A/B Testing sur les labels pour les contributions.

[m-maillot]

closes #7214

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	@​socialgouv/​matomo-next@​1.11.0 ⏵ 1.13.1				-4

View full report

[revu-bot]

PR Summary: A/B Testing for Contribution Labels in Search

This PR migrates A/B testing from a custom hand-rolled implementation (initABTesting.ts, useABTestVariant.ts) to the built-in A/B testing support in @socialgouv/matomo-next@1.13.1. The overall direction is positive — removing ~170 lines of custom code in favor of a library-maintained solution.

Key Changes

• Upgrades @socialgouv/matomo-next from ^1.11.0 to ^1.13.1
• Removes custom initABTesting.ts and useABTestVariant.ts
• Passes abTests: AB_TESTS directly to trackAppRouter()
• Defines a LabelCardSearch A/B test with 5 variations for contribution labels
• Applies the variant in SearchCard and SearchResultCard

Issues Found

File	Lines	Severity	Issue
abTests.ts	18–37	IMPORTANT	percentage: 100 means all visitors are enrolled — no control group
utils.ts	39–54	IMPORTANT	ORIGINAL variant falls through to default label — silent mismatch
SearchPageClient.test.tsx	32–34	IMPORTANT	Mock returns wrong shape for useABTestVariant
abTests.ts	18	MINOR	Test name "LabelCardSearch" is a magic string duplicated across files
MatomoAnalytics.tsx	32	MINOR	SITE_URL import removed but was previously used — verify no regression

[maxgfr]

Trop bien 🤩🤩🤩🤩🤩🤩

T'en penses quoi de l'approche ? 👀

[m-maillot]

Trop bien 🤩🤩🤩🤩🤩🤩

T'en penses quoi de l'approche ? 👀

Super simple et efficace, le top 👍 Ca a été un jeu d'enfant à mettre en place.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[tokenbureau]

🎉 Deployment for commit dd6ee08 :

Ingresses

• 🚀 https://code-du-travail-numerique-feat-ab-testing-label-3oe65apk.ovh.fabrique.social.gouv.fr/

Docker images

• 📦 docker pull harbor.fabrique.social.gouv.fr/cdtn/code-du-travail-numerique/app:sha-dd6ee08ad42fa14c67da74210ecefd2c3e5e92a5

Debug

• 📕 Loki logs for namespace code-du-travail-numerique-feat-ab-testing-label-3oe65apk
• 📈 Pods monitoring for namespace code-du-travail-numerique-feat-ab-testing-label-3oe65apk
• 📈 Workloads monitoring for namespace code-du-travail-numerique-feat-ab-testing-label-3oe65apk