Replace collections on europe front if participating in the Europe beta test

[cemms1]

What is the value of this and can you measure success?

Setting up phase 2 of the Europe beta experiment test plan to show the containers on the Europe beta front instead of those on the Europe front for users participating in the test:

• If a user requests the europe front

  • and is participating in the test, the europe front is returned with the collections swapped out for the ones on the hidden europe-beta front
  • and is not participating in the test, the europe collections are returned as usual.

• If a user requests any other front and is either participating or not participating in the Europe beta test, the collections configured for that front are unchanged.

Table to demonstrate the above logic:

front requested	in test	not in test
europe	europe front with europe-beta collections	europe front with europe collections
europe-beta	404 not found	404 not found
uk	uk front with uk collections	uk front with uk collections

Trello ticket link

What does this change?

Adjusts the logic in renderFrontPressResult for fetching the futureFaciaPage to swap the collections returned in the response if a user is participating in the Europe beta test and they are requesting the Europe front.

All other fields remain the same apart from collections which returns those on the hidden europe-beta front instead of the usual collections returned from the europe front.

Screenshots

Checklist

• Tested locally, and on CODE if necessary
• Will not break dotcom-rendering
• Will not break our database – if updating CAPI, updated and committed the database files

How to test

• Deploy to the CODE environment
• Head to the /europe page
  • Take note of the containers on the page
• Opt in to the Europe beta experiment (https://code.dev-theguardian.com/opt/in/europe-beta-front)
• Reload the page
  • This should have different containers configured to appear on the page
• Opt out of the Europe beta experiment (https://code.dev-theguardian.com/opt/out/europe-beta-front)
• Reload the page
  • You should see the original containers configured for the Europe front

[github-actions]

Deploy build 3387 of dotcom:frontend-all to CODE

All deployment options

• Deploy build 3387 of dotcom:frontend-all to CODE
• Deploy parts of build 3387 to CODE by previewing it first
• What's on CODE right now?

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From guardian/actions-riff-raff.

[Georges-GNM]

Tested it when the branch was up on code earlier this week - looks good to me.

[prout-bot]

Seen on FRONTS-PROD, ADMIN-PROD (merged by @cemms1 13 minutes and 3 seconds ago)

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