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Restrict editorial AB testing to US network front #16598

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Restrict editorial AB testing to US network front #16598

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4306a7b
Limit editorial headline AB testing to the US network front during in…
abeddow91 Aug 24, 2026
df0d1e6
Update tests to use the US front as the front ID
abeddow91 Aug 24, 2026
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22 changes: 11 additions & 11 deletions dotcom-rendering/src/model/enhanceCards.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -603,7 +603,7 @@ describe('Enhance Cards', () => {
] as VariantMeta[],
startDate: Date.now() - oneHourInMilliseconds,
expiryDate: Date.now() + oneHourInMilliseconds,
frontsThisTestCanRunOn: ['test-front'],
frontsThisTestCanRunOn: ['us'],
hasManuallyEndedOnThisTrail: false,
},
],
Expand Down Expand Up @@ -669,7 +669,7 @@ describe('Enhance Cards', () => {

it('returns the default headline if editorial test exists and page is in allowed fronts list, but user is not in a test bucket', () => {
expect(
decideHeadline(cardWithEditorialTest, {}, true, 'test-front'),
decideHeadline(cardWithEditorialTest, {}, true, 'us'),
).toEqual('Headline');
});

Expand All @@ -681,7 +681,7 @@ describe('Enhance Cards', () => {
'fronts-and-curation-editorial-headline-test': 'a',
},
true,
'test-front',
'us',
),
).toEqual('Headline');
});
Expand All @@ -694,7 +694,7 @@ describe('Enhance Cards', () => {
'fronts-and-curation-editorial-headline-test': 'a',
},
true,
'invalid-test-front',
'invalid-us',
),
).toEqual('Headline');
});
Expand All @@ -707,7 +707,7 @@ describe('Enhance Cards', () => {
'fronts-and-curation-editorial-headline-test': 'a',
},
false,
'test-front',
'us',
),
).toEqual('Headline');
});
Expand All @@ -720,7 +720,7 @@ describe('Enhance Cards', () => {
'fronts-and-curation-editorial-headline-test': 'a',
},
true,
'test-front',
'us',
),
).toEqual('Headline A');
});
Expand All @@ -733,7 +733,7 @@ describe('Enhance Cards', () => {
'fronts-and-curation-editorial-headline-test': 'b',
},
true,
'test-front',
'us',
),
).toEqual('Headline B');
});
Expand All @@ -746,7 +746,7 @@ describe('Enhance Cards', () => {
'fronts-and-curation-editorial-headline-test': 'c',
},
true,
'test-front',
'us',
),
).toEqual('Headline');
});
Expand All @@ -759,7 +759,7 @@ describe('Enhance Cards', () => {
'fronts-and-curation-editorial-headline-test': 'a',
},
true,
'test-front',
'us',
),
).toEqual('Headline');
});
Expand All @@ -772,7 +772,7 @@ describe('Enhance Cards', () => {
'fronts-and-curation-editorial-headline-test': 'a',
},
true,
'test-front',
'us',
),
).toEqual('Headline');
});
Expand All @@ -785,7 +785,7 @@ describe('Enhance Cards', () => {
'fronts-and-curation-editorial-headline-test': 'a',
},
true,
'test-front',
'us',
),
).toEqual('Headline');
});
Expand Down
6 changes: 6 additions & 0 deletions dotcom-rendering/src/model/enhanceCards.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -237,6 +237,12 @@ export const decideHeadline = (

if (!testCanRunOnPage) return defaultHeadline;

/*
* Initial rollout of Editorial AB testing will be limited to the US front only.
* Removal of this front restriction will be covered by https://github.com/guardian/frontend/issues/29129
*/
if (pageId !== 'us') return defaultHeadline;

const variantMeta = activeEditorialTest.variantMeta.find(
(variant) => variant.id.toLowerCase() === testBucket,
);
Expand Down
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