https://bbc.atlassian.net/browse/WS-1945

Migrated topic page tests to next js app as part of the migration of pages to next js. Deletes tests from src/app.

This pull request also adds and refactors integration tests for the topic pages, focusing on improving test coverage for page content and curation features. It introduces a shared test suite for verifying topic page content, applies this suite to multiple services, and updates relevant snapshot files to reflect the new and updated tests.

Test Coverage Improvements:

• Added a new shared test suite in pageContentTests.ts to verify key aspects of topic page content, such as the first item's headline and image, the presence of curation grids, and the main HTML tag structure.
• Integrated the new pageContentTests into the existing cross-platform tests (crossPlatformTests.ts) and the mundo topic page tests, ensuring consistent content validation across services. [1] [2]

Snapshot and Test File Updates:

• Added and updated Jest snapshot files for the mundo and pidgin topic pages to capture expected headlines, images, badge images, and descriptions as part of the new and expanded tests. [1] [2]
• Updated snapshot references for SEO-related attributes (such as canonical URLs and Open Graph data) to reflect changes in the local test server port, ensuring test accuracy. [1] [2] [3] [4]Resolves JIRA:

Summary

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Code changes

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Developer Checklist

• UX
  • UX Criteria met (visual UX & screenreader UX)
• Accessibility
  • Accessibility Acceptance Criteria met
  • Accessibility swarm completed
  • Component Health updated
  • P1 accessibility bugs resolved
  • P2/P3 accessibility bugs planned (if not resolved)
• Security
  • Security issues addressed
  • Threat Model updated
• Documentation
  • Docs updated (runbook, READMEs)
• Testing
  • Feature tested on relevant environments
• Comms
  • Relevant parties notified of changes

Testing

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  • Local (Ready-For-Test, Local)
  • Test (Ready-For-Test, Test)
  • Preview (Ready-For-Test, Preview)
  • Live (Ready-For-Test, Live)
• Manual Testing complete?
  • Local
  • Test
  • Preview
  • Live

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