Files
deepseek-harness/packages/client/ui-trajectory/tests/context-branches.spec.ts
T

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2.5 KiB
TypeScript

import { describe, expect, it } from 'vitest'
import type {
ConversationContext, ConversationNode, RequestView,
} from '@deepseek-ai/dsh-client-runtime/client'
import {
deriveTrajectoryContextBranches,
trajectoryBranchContainsRequest,
} from '../src/client/context-branches.ts'
const checkpoint = {
kind: 'context',
seq: 100,
time: 100,
content: [],
source: { kind: 'plugin', plugin: 'compact' },
} as ConversationNode
const abandoned = {
kind: 'assistant',
seq: 20,
time: 20,
turn: 1,
step: 1,
blocks: [{ kind: 'text', text: 'abandoned' }],
} as ConversationNode
const current = {
kind: 'user',
seq: 110,
time: 110,
content: [{ type: 'text', text: 'rewound' }],
source: { kind: 'plugin', plugin: 'rewind' },
} as ConversationNode
function request(
purpose: RequestView['purpose'],
startSeq: number,
resultSeq?: number,
replacementSeq?: number,
): RequestView {
const base = {
startSeq,
startedAt: startSeq,
completedAt: startSeq + 1,
status: 'complete' as const,
...(resultSeq === undefined ? {} : { resultSeq }),
}
return purpose === 'assistant'
? { ...base, purpose, turn: 1, step: 1 }
: {
...base,
purpose,
turn: 1,
step: 0,
...(replacementSeq === undefined ? {} : { replacementSeq }),
}
}
describe('trajectory context branches', () => {
it('inherits nodes and requests by retained surface position rather than seq cutoff', () => {
const contexts: ConversationContext[] = [
{ id: 0, nodes: [checkpoint, abandoned] },
{
id: 1,
parentId: 0,
origin: 'rewind',
originSeq: 110,
nodes: [checkpoint, current],
},
]
const branches = deriveTrajectoryContextBranches(contexts)
const successor = branches[1]!
expect(successor.key).toBe('rewind:110')
expect(successor.nodes.map(node => node.seq)).toEqual([110])
expect(trajectoryBranchContainsRequest(
successor,
request('assistant', 10, 20),
)).toBe(false)
expect(trajectoryBranchContainsRequest(
successor,
request('compaction', 90, 95, 100),
)).toBe(true)
expect(trajectoryBranchContainsRequest(
successor,
request('assistant', 111),
)).toBe(true)
})
it('keeps branch identity when prepended generations shift local ids', () => {
const branch = (id: number) => deriveTrajectoryContextBranches([{
id,
origin: 'rewind',
originSeq: 110,
nodes: [current],
}])[0]
expect(branch(1)?.key).toBe(branch(9)?.key)
})
})