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fix(invariants): replay histories and pack companions

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This commit is contained in:
Tianyi Cui
2026-07-21 17:46:43 +08:00
parent 2434afd2ef
commit 504fbf59f3
18 changed files with 322 additions and 74 deletions
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43
packages/context/time-context/tests/invariant.spec.ts
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@@ -1,7 +1,7 @@
import { describe, expect, it } from 'vitest'
import { Context } from 'cordis'
import type { ContentBlock } from '@deepseek-ai/dsh-llm'
import { Session, SessionId, type SessionEvent } from '@deepseek-ai/dsh-session'
import SessionStore, { Session, SessionId, type SessionEvent } from '@deepseek-ai/dsh-session'
import * as TimeInvariant from '@deepseek-ai/dsh-time-context/invariant'
import InvariantService from '@deepseek-ai/dsh-invariants'
@@ -9,7 +9,8 @@ const SECOND = Date.parse('2026-07-14T00:00:00Z')
async function setup(): Promise<Context> {
const ctx = new Context()
await ctx.plugin(InvariantService)
await ctx.plugin(SessionStore)
await ctx.plugin(InvariantService, { enabled: true })
await ctx.plugin(TimeInvariant)
return ctx
}
@@ -54,6 +55,13 @@ function preparing(turn: number, step: number): Session {
return session
}
function appendReading(session: Session, text: string): void {
session.append('context/message', {
content: [{ type: 'text', text }],
source: { kind: 'plugin', plugin: 'time-context' },
}, { surfaceOp: 'append' })
}
describe('time-context invariants', () => {
it('accepts a reading whose turn, step, baseline, and timestamp agree', async () => {
const ctx = await setup()
@@ -69,6 +77,37 @@ describe('time-context invariants', () => {
}).not.toThrow()
})
it('validates each existing reading against its preceding durable prefix', async () => {
const ctx = new Context()
await ctx.plugin(SessionStore)
const session = ctx.sessions.create(SessionId('time-invariant-late-valid'))
session.append('turn/start', { turn: 1, trigger: { kind: 'message', source: { kind: 'user' } } })
session.append('user/message', {
content: [{ type: 'text', text: 'prepare' }],
source: { kind: 'user' },
}, { surfaceOp: 'append' })
appendReading(session, reading())
session.append('step/start', { turn: 1, step: 1 })
await ctx.plugin(InvariantService, { enabled: true })
await expect(ctx.plugin(TimeInvariant)).resolves.toBeDefined()
})
it('rejects an invalid existing reading on late registration', async () => {
const ctx = new Context()
await ctx.plugin(SessionStore)
const session = ctx.sessions.create(SessionId('time-invariant-late-invalid'))
session.append('turn/start', { turn: 1, trigger: { kind: 'message', source: { kind: 'user' } } })
session.append('user/message', {
content: [{ type: 'text', text: 'prepare' }],
source: { kind: 'user' },
}, { surfaceOp: 'append' })
appendReading(session, reading('1', '2', 'step context'))
await ctx.plugin(InvariantService, { enabled: true })
await expect(ctx.plugin(TimeInvariant).then(() => undefined)).rejects.toThrow(/expected turn 1\/step 1/)
})
it.each([
[reading('1', '3', 'step context'), /expected turn 2\/step 3/],
[reading('2', '2', 'step context'), /expected turn 2\/step 3/],