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Results and Coverage

This page summarizes the outcome of the Spotify Playlist Export campaign at the time of the November 2025 scope freeze, including test execution and coverage status.

Final execution summary

The November 2025 execution report (docs/reports/test-execution-2025-11.md) captured the state of the feature after all planned test suites were run.

Key points:

  • Scope freeze commit: 2fdb518
  • Execution date: 2025-11-20
  • Runners:
    • Local: Windows 10/11, Node 20
    • CI: GitHub Actions on Ubuntu LTS
  • Browsers:
    • Cypress (Chrome, Electron)
    • Manual spot checks in Firefox

The following suites were run as part of the final campaign:

  • Unit and integration tests (Vitest)
  • UI component tests (React Testing Library)
  • Cypress E2E tests for core and edge-case flows
  • Supporting scripts to generate and filter coverage reports

All feature-scoped tests for the Spotify export flow were passing at the time of the report.

Coverage

Coverage was calculated using LCOV and filtered into multiple views:

  • Full-project coverage.
  • Coverage for changed files.
  • Coverage for feature-scoped files (export worker, mapping service, auth, UI components related to export).

The workflows:

  • Generated LCOV via Vitest.
  • Filtered LCOV against:
    • .changed-files.txt for changed-files coverage.
    • .feature-scope.txt for export-feature coverage.
  • Used a small calc-coverage script to summarize line, branch, and function coverage.

The quality gates defined in the quality gates section set expectations for minimum coverage on new or changed code. At the time of the scope freeze:

  • Export-related modules met or exceeded the coverage thresholds for changed files.
  • Feature-scoped coverage for export logic and associated UI components was above the target level.
  • Branch coverage for critical paths (rate limiting, per-track errors, revoke flows) was specifically called out as being above target in the execution report.

While the precise percentages are tracked in the coverage outputs referenced from the execution summary, the important takeaway is that the export feature was not treated as a “one-off”; it received structured coverage analysis, and gaps were addressed rather than ignored.

Test distribution chart

pie showData
  "Unit" : 40
  "Integration" : 25
  "UI" : 10
  "E2E" : 15
  "Manual" : 10

Functional outcomes

From a functional perspective, the export feature achieved the following at scope freeze:

  • A user can:

    • Connect Spotify via OAuth, with secure handling of tokens.
    • Filter and select songs on /rankings.
    • Name and optionally describe the playlist.
    • Start an export and see progress feedback.
    • Receive a working playlist link on success.

  • The system can:

    • Handle per-track mapping failures without failing the entire export.
    • Respond reasonably to 429 rate-limit responses, with bounded retries.
    • Enforce reconnect requirements when Spotify access is revoked.
    • Preserve deterministic ordering of tracks in the exported playlist.

Quality outcomes

As a QA effort, this campaign resulted in:

  • Documented baseline behavior prior to the feature (baseline).
  • A layered test suite:
    • Unit tests for pipeline and client logic.
    • Integration tests for contracts and envelopes.
    • UI tests for export modal behavior.
    • E2E tests for realistic user journeys.
  • A clear traceability matrix mapping requirements to tests and defects.
  • A defect log capturing critical issues and their resolutions.
  • A repeatable process for re-running the entire suite locally and in CI.

These outcomes provide a strong foundation for future changes to the export feature, including potential extensions to other providers or more advanced playlist-building logic.