17 tests across the formatter + byte renderer + JSON entry point:
- formatBytes() 4-tier (bytes, KB, MB, GB) + 160 GB sanity case
(the friend's OOM number from the original screenshot, so the
renderer doesn't blow up at real leak scale)
- handleMemoryCommand --json mode parseable shape
- handleMemoryCommand text mode: Bun server line, no-tabs branch,
top-10 sort with "...and N more" tail, Chromium process grouping
by type, "unavailable" line when processes is null, modification-
history evicted-count format, notes section rendering, long-URL
ellipsis truncation
- buildMemorySnapshotJson returns shape matching the type
The formatSnapshotText renderer is private to memory-command.ts;
tests exercise it through handleMemoryCommand's text-mode return
path. The eviction-count format is pinned via a parallel format
contract assertion since the renderer reads live module state.
Coverage gate: brings the diagnostic surface from 0% to ~80%.
Extension UI (sidepanel.js footer + toast) remains uncovered —
adding tests there would require extracting fmtBytesShort and
tabRamScore from sidepanel.js into a testable TS module, which is
deferred to a follow-up to keep this PR scoped.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Garry Tan