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test: cover corrupt fork boundary guard

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Hypatia May
2026-07-06 16:16:47 +08:00
parent 50ffa0c9a9
commit 9c5da8d81f
1 changed files with 12 additions and 0 deletions
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12
packages/core/session/tests/fork.spec.ts
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@@ -144,6 +144,18 @@ describe('SessionStore.fork', () => {
.toThrow(new SessionForkError(`fork boundary ${source.seq} does not exist in session "parent" (last seq: ${source.seq - 1})`, 'INVALID_BOUNDARY'))
})
it('rejects a corrupted live source whose array index no longer matches event seq', async () => {
const { ctx, sessions } = await setup()
const source = ctx.sessions.create(SessionId('corrupt-parent'))
appendClosedTurn(source, 1)
const mutableLog = (source as unknown as { log: SessionEvent[] }).log
mutableLog[2] = { ...mutableLog[2]!, seq: 99 }
expect(() => sessions.fork({ source, boundary: 2, childSessionId: SessionId('corrupt-child') }))
.toThrow(new SessionForkError('fork boundary 2 does not match a contiguous event seq in session "corrupt-parent"', 'INVALID_BOUNDARY'))
expect(ctx.sessions.get(SessionId('corrupt-child'))).toBeUndefined()
})
it('rejects an unknown live session id', async () => {
const { sessions } = await setup()