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4grayandClaude Opus 5
19b592badb
The mapping handlers documented a fail-soft contract but only honored half
of it. Four of them returned the database operation's promise from inside
the `try` block without awaiting it, so the rejection escaped the `catch`:
the try block exits before the promise settles. A `getDatabase()` failure
was caught, but a SQLite error in the operation rejected the
`ipcMain.handle` promise, and the renderer call threw instead of receiving
`null` / `{success:false}` / `[]`.
Adding `await` in handleGetEpgMapping, handleSetEpgMapping,
handleDeleteEpgMapping and handleSearchEpgChannels closes the gap.
resolveChannelIds and handleGetEpgMappingsBatch already awaited correctly
and are unchanged.
This is pre-existing — the same shape predates the epg.events.ts split in
636545cb, which preserved semantics faithfully and inherited the bug.
Adds epg-mapping.service.spec.ts, the first coverage these handlers have
had: table-driven over all six functions against both failure modes, plus
the guard clauses and queryByResolvedChannelIds remapping. Verified to fail
on the old behavior — reverting the four awaits fails exactly the four
operation-rejection cases.
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>