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Split Tests/UnitTests/Scripts/tests.ts into per-polyfill spec files #180
Description
Summary
Tests/UnitTests/Scripts/tests.ts has grown to ~1.5k lines spanning 15+ describe blocks across 10+ polyfills (XHR, WebSocket, Blob, File, FileReader, TextEncoder/Decoder, URL, Console, Scheduling, AbortController, napi prototype isolation, ...). Every new polyfill grows this single file further, which hurts readability, makes ownership/blame noisy, and increases merge-conflict surface.
Proposal
Split the suite into one spec file per polyfill (e.g. Scripts/tests/xhr.ts, blob.ts, file.ts, filereader.ts, ...) with a small barrel/entrypoint that the test harness loads. Keep shared helpers (server bootstrap, fixtures) in a common module.
Context
Raised in review of #169 (File / FileReader polyfill). Filing as a standalone follow-up so that PR's diff stays focused on the polyfill itself rather than a large test reorganization.
Activity
bkaradzic-microsoft commentedon Oct 23, 2026
Implemented in #257 (commit
62818eecfb4825a70544e0159d856245fd774749): the monolithictests.tswas replaced by feature-specifictests.*.tsfiles, with the native test entry points organized by feature as well. The split is present in current master. Closing this completed reorganization.