deepseek-harness/snapshots/sdk/sdk.snapshot.ts
2026-08-24 21:37:57 +08:00

795 lines
34 KiB
TypeScript

/**
* Keyless snapshot coverage for the TypeScript SDK path: each scenario spawns
* the real `dsh --profile sdk` runtime through
* `@deepseek-ai/dsh-sdk-client`, drives one turn over stdio JSON-RPC,
* and pins the SDK `RunResult`, the complete notification stream, and the
* persisted session logs. Replay serves recorded model
* responses via `llm-replay` (`cordis.snapshot.yml`); `DSH_SNAPSHOT=record`
* re-records against the live API; `DSH_SNAPSHOT=refresh` replays committed
* fixtures and rewrites expected outputs.
*/
import { existsSync } from 'node:fs'
import { cp, mkdir, mkdtemp, readFile, readdir, rm, writeFile } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import { basename, delimiter, join } from 'node:path'
import { fileURLToPath } from 'node:url'
import { describe, expect, it } from 'vitest'
import {
captureExpectedWorkspaceSnapshot,
captureWorkspaceSnapshot,
normalizeSessionLog,
normalizeSessionSnapshots,
normalizeStdout,
normalizedHeaders,
normalizedSystemPrompts,
normalizedToolSchemas,
parseSnapshotManifest,
parseToolSchemasSnapshot,
redactSessionSnapshotIds,
refreshFixtureReplacements,
restorePinnedToolSchemas,
scrubRequestHeaders,
scrubSessionSnapshot,
scrubSystemPrompts,
sessionFixtureNames,
stabilizeFixtureMessageIds,
stabilizeRefreshLog,
tokenizeSessionFixtureCwd,
materializeProfilePatch,
formatSystemPromptSnapshot,
formatToolSchemasSnapshot,
type HarvestedLog,
type NormalizeContext,
type SnapshotManifest,
type WorkspaceSnapshotEntry,
} from '@deepseek-ai/dsh-session-snapshot'
import {
DeepSeekHarness,
type HarnessNotification,
type NotificationSubscription,
type RunResult,
type SdkPromptContentBlock,
} from '@deepseek-ai/dsh-sdk-client'
const corpusRoot = fileURLToPath(new URL('../', import.meta.url))
const MINIMAL_SYSTEM_PROMPT = 'You are the environment-selected minimal software engineer.'
const MINIMAL_BASH_DESCRIPTION = `Run commands in a bash shell
* When invoking this tool, the contents of the "command" parameter does NOT need to be XML-escaped.
* You don't have access to the internet via this tool.
* You do have access to a mirror of common linux and python packages via apt and pip.
* State is persistent across command calls and discussions with the user.
* To inspect a particular line range of a file, e.g. lines 10-25, try 'sed -n 10,25p /path/to/the/file'.
* Please avoid commands that may produce a very large amount of output.
* Please run long lived commands in the background, e.g. 'sleep 10 &' or start a server in the background.`
const mode = process.env.DSH_SNAPSHOT ?? 'replay'
const recording = mode === 'record'
const refreshing = mode === 'refresh'
const RUNTIME_WORKSPACE_ENTRIES = ['.agents', '.dsh', '.replay-fixtures', '.snapshot-patches'] as const
function dirOf(url: string): string {
return fileURLToPath(new URL('.', url))
}
interface SdkAssertions {
/** Environment overrides passed to the runtime subprocess. */
environment?: Readonly<Record<string, string>>
/** Assembled model-facing tool names and required argument keys. */
expectedTools?: Readonly<Record<string, readonly string[]>>
/** Exact assembled system prompt for the root request. */
expectedSystem?: string
/** Exact model-facing descriptions for selected tools. */
expectedToolDescriptions?: Readonly<Record<string, string>>
/** Expected runtime-context state in the real assembled request. */
runtimeContext?: false | { includes: readonly string[]; excludes: readonly string[] }
}
const SDK_ASSERTIONS: Readonly<Record<string, SdkAssertions>> = {
'persistent-tools': {
environment: { DSH_SYSTEM_PROMPT: MINIMAL_SYSTEM_PROMPT },
expectedTools: { bash: ['command'], str_replace_editor: ['command', 'path'] },
expectedSystem: MINIMAL_SYSTEM_PROMPT,
expectedToolDescriptions: { bash: MINIMAL_BASH_DESCRIPTION },
runtimeContext: {
includes: ['Current DSH file policy: danger-full-access', 'Approval prompts are disabled in this session'],
excludes: ['workspace-write'],
},
},
}
interface CorpusScenario {
readonly key: string
readonly name: string
readonly dir: string
readonly manifest: SnapshotManifest & {
composition: string
recording: 'live' | 'authored'
header: NonNullable<SnapshotManifest['header']>
}
}
async function collectCorpus(): Promise<CorpusScenario[]> {
const scenarios: CorpusScenario[] = []
for (const profile of ['session', 'sdk']) {
const root = join(corpusRoot, profile)
for (const entry of await readdir(root, { withFileTypes: true })) {
if (!entry.isDirectory()) continue
const dir = join(root, entry.name)
const manifestPath = join(dir, 'snapshot.yml')
if (!existsSync(manifestPath)) continue
const manifest = parseSnapshotManifest(await readFile(manifestPath, 'utf8'), manifestPath)
if (manifest.composition === undefined || manifest.recording === undefined || manifest.header === undefined) continue
scenarios.push({
key: `${profile}/${entry.name}`,
name: entry.name,
dir,
manifest: { ...manifest, composition: manifest.composition, recording: manifest.recording, header: manifest.header },
})
}
}
return scenarios
}
const corpus = await collectCorpus()
const scenarioByKey = new Map(corpus.map(scenario => [scenario.key, scenario]))
const sdkScenarios = corpus
.filter(scenario => scenario.manifest.profile === 'sdk')
.sort((left, right) => left.name.localeCompare(right.name))
const compositionOwners = new Map<string, CorpusScenario>()
const headerPins = new Map<string, CorpusScenario>()
for (const scenario of corpus) {
const { composition, header } = scenario.manifest
if (existsSync(join(scenario.dir, 'cordis.yml'))) {
if (compositionOwners.has(composition)) throw new Error(`snapshot composition ${composition} has multiple patch owners`)
compositionOwners.set(composition, scenario)
}
if (header.pin === true) {
const key = `${composition}/${header.class}`
if (headerPins.has(key)) throw new Error(`snapshot header class ${key} has multiple pins`)
headerPins.set(key, scenario)
}
}
function compositionOwner(scenario: CorpusScenario): CorpusScenario {
const owner = compositionOwners.get(scenario.manifest.composition)
if (owner === undefined) throw new Error(`${scenario.key}: composition has no cordis.yml owner`)
return owner
}
function headerPin(scenario: CorpusScenario): CorpusScenario {
const pin = headerPins.get(`${scenario.manifest.composition}/${scenario.manifest.header.class}`)
if (pin === undefined) throw new Error(`${scenario.key}: composition/header class has no pin`)
return pin
}
function sourceScenario(owner: CorpusScenario, source: string | undefined): CorpusScenario {
const key = source === undefined
? owner.key
: source.includes('/') ? source : `${owner.key.split('/')[0]}/${source}`
const scenario = scenarioByKey.get(key)
if (scenario === undefined) throw new Error(`${owner.key}: unknown sidecar source ${key}`)
return scenario
}
interface PersistedLog {
readonly path: string
readonly content: string
readonly header: Record<string, unknown>
}
async function jsonlFiles(dir: string): Promise<string[]> {
const entries = await readdir(dir, { recursive: true })
return entries.filter(entry => entry.endsWith('.jsonl')).map(entry => join(dir, entry)).sort()
}
async function persistedLogs(sessionsRoot: string): Promise<PersistedLog[]> {
const files = await jsonlFiles(sessionsRoot)
return Promise.all(files.map(async (path) => {
const content = await readFile(path, 'utf8')
const header = JSON.parse(content.slice(0, content.indexOf('\n'))) as Record<string, unknown>
return { path, content, header }
}))
}
interface LoggedRequestHeader {
type?: string
data?: { header?: { system?: unknown; tools?: LoggedTool[] } }
}
interface LoggedTool {
readonly name: string
readonly description?: unknown
readonly parameters: { readonly required?: string[] }
}
function assembledTools(log: PersistedLog): LoggedTool[] {
const event = log.content.trimEnd().split('\n')
.map(line => JSON.parse(line) as LoggedRequestHeader)
.find(candidate => candidate.type === 'request/header')
const tools = event?.data?.header?.tools
if (tools === undefined) throw new Error('session log has no request/header tools')
return tools
}
function assembledToolRequirements(log: PersistedLog): Record<string, string[]> {
return Object.fromEntries(assembledTools(log).map(tool => [tool.name, tool.parameters.required ?? []]))
}
function assembledToolDescriptions(log: PersistedLog): Record<string, string> {
return Object.fromEntries(assembledTools(log).map((tool) => {
if (typeof tool.description !== 'string') throw new Error(`tool ${tool.name} has no description`)
return [tool.name, tool.description]
}))
}
function assembledSystem(log: PersistedLog): string {
const event = log.content.trimEnd().split('\n')
.map(line => JSON.parse(line) as LoggedRequestHeader)
.find(candidate => candidate.type === 'request/header')
const system = event?.data?.header?.system
if (typeof system !== 'string') throw new Error('session log has no request/header system')
return system
}
function assembledRuntimeContexts(log: PersistedLog): string[] {
return log.content.trimEnd().split('\n').flatMap((line) => {
const event = JSON.parse(line) as {
type?: string
data?: { source?: { kind?: string; plugin?: string }; content?: Array<{ type?: string; text?: unknown }> }
}
if (event.type !== 'user/message'
|| event.data?.source?.kind !== 'plugin'
|| event.data.source.plugin !== '@deepseek-ai/dsh-system-prompt') return []
return event.data.content?.flatMap(block => block.type === 'text' && typeof block.text === 'string' ? [block.text] : []) ?? []
})
}
function contextOf(logs: readonly { content: string; header: Record<string, unknown> }[], cwd: string): NormalizeContext {
return {
sessionIds: logs.flatMap(log => typeof log.header.id === 'string' ? [log.header.id] : []),
cwd,
}
}
function contextOfContents(contents: readonly string[]): NormalizeContext {
const headers = contents.map(content => JSON.parse(content.slice(0, content.indexOf('\n'))) as Record<string, unknown>)
return {
sessionIds: headers.flatMap(header => typeof header.id === 'string' ? [header.id] : []),
cwd: typeof headers[0]?.cwd === 'string' ? headers[0].cwd : '\0no-cwd\0',
}
}
async function fixtureFiles(scenario: CorpusScenario): Promise<string[]> {
const names = sessionFixtureNames(await readdir(scenario.dir))
return names.map(name => join(scenario.dir, name))
}
async function hydrateReplayFixtures(scenario: CorpusScenario, cwd: string): Promise<string[]> {
const root = join(cwd, '.replay-fixtures')
await mkdir(root, { recursive: true })
return Promise.all((await fixtureFiles(scenario)).map(async (source) => {
const destination = join(root, basename(source))
await writeFile(destination, (await readFile(source, 'utf8')).replaceAll('{{cwd}}', cwd))
return destination
}))
}
/**
* Normalize the SDK-visible notification stream: embedded `session.event`
* envelopes get the session-log treatment (times zeroed, headers tokenized),
* then every record is scrubbed like a wire frame.
*/
function normalizeNotifications(notifications: readonly HarnessNotification[], ctx: NormalizeContext): string {
const events = notifications
.filter(n => n.method === 'session.event')
.map(n => n.params.event as Record<string, unknown>)
const normalizedEvents = events.length === 0
? []
: scrubRequestHeaders(normalizeSessionLog(
`${events.map(event => JSON.stringify(event)).join('\n')}\n`,
ctx,
)).trimEnd().split('\n').map(line => JSON.parse(line) as Record<string, unknown>)
let eventIndex = 0
const records = notifications.map((notification) => {
if (notification.method !== 'session.event') return { method: notification.method, params: notification.params }
const event = normalizedEvents[eventIndex++]
return { method: notification.method, params: { ...notification.params, event } }
})
return normalizeStdout(`${records.map(record => JSON.stringify(record)).join('\n')}\n`, ctx)
}
/** Normalize the owned-run projection. */
function normalizeResult(result: RunResult, ctx: NormalizeContext): string {
return normalizeStdout(`${JSON.stringify({
sessionId: result.sessionId,
finalResponse: result.finalResponse,
})}\n`, ctx)
}
interface JsonObject {
[key: string]: unknown
}
interface TurnAction {
readonly turn: number
readonly content?: JsonObject[]
}
function records(log: string): JsonObject[] {
return log.split(/\r?\n/)
.filter(line => line.trim() !== '')
.map(line => JSON.parse(line) as JsonObject)
}
function modelFromSession(log: string): { provider: string; model: string } {
for (const record of records(log)) {
if (record.type !== 'request/header') continue
const data = record.data as JsonObject | undefined
const header = data?.header as JsonObject | undefined
const config = header?.config as JsonObject | undefined
if (typeof config?.provider === 'string' && typeof config.model === 'string') {
return { provider: config.provider, model: config.model }
}
}
throw new Error('SDK snapshot session has no request model')
}
function turnActions(log: string): TurnAction[] {
const actions: TurnAction[] = []
let current: TurnAction | undefined
for (const record of records(log)) {
if (record.type === 'turn/start') {
const data = record.data as JsonObject | undefined
if (typeof data?.turn !== 'number') throw new Error('SDK snapshot turn/start has no turn')
current = { turn: data.turn }
continue
}
if (record.type === 'user/message' && current !== undefined && current.content === undefined) {
const data = record.data as JsonObject | undefined
const source = data?.source as JsonObject | undefined
if (source?.kind === 'user' && Array.isArray(data?.content)) {
current = { turn: current.turn, content: data.content as JsonObject[] }
}
continue
}
if (record.type === 'turn/end' && current !== undefined) {
actions.push(current)
current = undefined
}
}
return actions
}
function postTurnEventTypes(log: string): string[] {
const values = records(log)
const finalTurnEnd = values.findLastIndex(record => record.type === 'turn/end')
return values.slice(finalTurnEnd + 1).flatMap(record => typeof record.type === 'string' ? [record.type] : [])
}
function materializeInput(
content: readonly JsonObject[],
scenario: CorpusScenario,
cwd: string,
liveSessions: readonly (string | undefined)[],
): SdkPromptContentBlock[] {
const attachments = new Map(scenario.manifest.input?.attachments?.map(attachment => [attachment.id, attachment]))
const replace = (value: unknown): unknown => {
if (typeof value === 'string') {
let output = value.replaceAll('{{cwd}}', cwd)
output = output.replace(/\{\{session:([1-9]\d*)\}\}/g, (_token, ordinal: string) => {
const live = liveSessions[Number(ordinal) - 1]
if (live === undefined) throw new Error(`${scenario.name}: session token ${ordinal} has not bound`)
return live
})
return output
}
if (Array.isArray(value)) return value.map(replace)
if (value !== null && typeof value === 'object') {
return Object.fromEntries(Object.entries(value).map(([key, item]) => [key, replace(item)]))
}
return value
}
return content.map((block) => {
if (block.type !== 'image') return replace(block) as SdkPromptContentBlock
const attachment = block.attachment as JsonObject | undefined
const id = attachment?.attachmentId
const input = typeof id === 'string' ? attachments.get(id) : undefined
if (input === undefined) throw new Error(`${scenario.name}: no input bytes for image attachment ${String(id)}`)
return { type: 'image', data: input.data, mimeType: input.mediaType } as SdkPromptContentBlock
})
}
function notificationEvent(notification: HarnessNotification): JsonObject | undefined {
return notification.method === 'session.event' && notification.params.event !== null
&& typeof notification.params.event === 'object'
? notification.params.event as JsonObject
: undefined
}
async function waitForRootEvent(
subscription: NotificationSubscription,
sessionId: string,
match: (event: JsonObject) => boolean,
observe: (notification: HarnessNotification) => void,
): Promise<void> {
while (true) {
const notification = await subscription.next()
observe(notification)
const event = notification.params.sessionId === sessionId ? notificationEvent(notification) : undefined
if (event !== undefined && match(event)) return
}
}
function authoredPatches(scenario: CorpusScenario, replaying: boolean): string[] {
const owner = compositionOwner(scenario)
if (scenario.manifest.composition.startsWith('sdk-')) {
return [join(owner.dir, 'cordis.yml'), ...(replaying ? [join(owner.dir, 'cordis.snapshot.yml')] : [])]
}
const base = compositionOwners.get('default')
if (base === undefined) throw new Error('SDK corpus has no default transport-neutral composition')
return [
join(base.dir, 'cordis.yml'),
...owner === base && !replaying ? [] : [join(owner.dir, replaying ? 'cordis.snapshot.yml' : 'cordis.yml')],
join(base.dir, 'model.cordis.yml'),
]
}
/** One SDK-controlled recorded scenario against a fresh `dsh --profile sdk` subprocess. */
async function runScenario(scenario: CorpusScenario): Promise<{
results: RunResult[]
notifications: HarnessNotification[]
observedMethods: ReadonlySet<string>
logs: PersistedLog[]
initialWorkspace: WorkspaceSnapshotEntry[]
finalWorkspace: WorkspaceSnapshotEntry[]
cwd: string
}> {
const cwd = await mkdtemp(join(tmpdir(), `sdk-snapshot-${scenario.name}-`))
const dshHome = join(cwd, '.dsh')
const sessionsRoot = join(dshHome, 'sessions')
const replayFixtures = recording ? [] : await hydrateReplayFixtures(scenario, cwd)
const fixtureContents = await Promise.all((await fixtureFiles(scenario)).map(file => readFile(file, 'utf8')))
const primaryFixture = fixtureContents[0]
if (primaryFixture === undefined) throw new Error(`${scenario.name}: no primary session fixture`)
const route = modelFromSession(primaryFixture)
const patchRoot = join(cwd, '.snapshot-patches')
await mkdir(patchRoot, { recursive: true })
const patches = authoredPatches(scenario, !recording)
.map((patch, index) => materializeProfilePatch(patch, cwd, patchRoot, index))
const workspaceDir = join(scenario.dir, 'workspace')
if (existsSync(workspaceDir)) {
for (const entry of await readdir(workspaceDir)) {
await cp(join(workspaceDir, entry), join(cwd, entry), { recursive: true, verbatimSymlinks: true })
}
}
const initialWorkspace = await captureWorkspaceSnapshot(cwd, {
ignoredRootEntries: RUNTIME_WORKSPACE_ENTRIES,
})
const [parentFixture, ...childFixtures] = replayFixtures
const assertions = SDK_ASSERTIONS[scenario.name] ?? {}
const env: Record<string, string> = {
...Object.fromEntries(Object.entries(process.env).filter(([, value]) => value !== undefined)) as Record<string, string>,
DSH_SNAPSHOT: mode,
DSH_SNAPSHOT_PROVIDER: route.provider,
DSH_SNAPSHOT_MODEL: route.model,
DSH_TELEMETRY_DISABLED: '1',
DSH_AGENTS_HOME: join(cwd, '.agents'),
NODE_OPTIONS: [process.env.NODE_OPTIONS, '--disable-warning=ExperimentalWarning'].filter(Boolean).join(' '),
...parentFixture === undefined ? {} : {
DSH_SNAPSHOT_FILE: parentFixture,
...childFixtures.length > 0 ? { DSH_SNAPSHOT_CHILD_FILES: childFixtures.join(delimiter) } : {},
},
...!recording && scenario.manifest.replay?.override === true
? { DSH_SNAPSHOT_OVERRIDE: join(scenario.dir, 'replay.override.json') }
: {},
...scenario.manifest.environment,
...assertions.environment,
}
const harness = new DeepSeekHarness({
profile: 'sdk',
patches,
dshHome,
processCwd: cwd,
env,
requestTimeoutMs: 110_000,
cwd,
provider: route.provider,
model: route.model,
})
try {
const notifications: HarnessNotification[] = []
const observedMethods = new Set<string>()
const results: RunResult[] = []
const sessionId = 'fixture-root-session'
const liveSessions: (string | undefined)[] = [sessionId]
await harness.start()
const subscription = harness.client.subscribeSessionTree(sessionId)
const observe = (notification: HarnessNotification): void => {
observedMethods.add(notification.method)
if (notification.method !== 'subagent.started') return
const child = notification.params.childSessionId
if (typeof child !== 'string' || liveSessions.includes(child)) return
liveSessions.push(child)
}
try {
const session = harness.session(sessionId)
for (const action of turnActions(primaryFixture)) {
if (action.content === undefined) {
await waitForRootEvent(
subscription,
sessionId,
event => event.type === 'turn/end' && (event.data as JsonObject | undefined)?.turn === action.turn,
observe,
)
continue
}
const result = await session.run(materializeInput(action.content, scenario, cwd, liveSessions), {
onNotification: (notification) => {
notifications.push(notification)
observe(notification)
},
})
results.push(result)
await waitForRootEvent(
subscription,
sessionId,
event => event.type === 'turn/end' && (event.data as JsonObject | undefined)?.turn === action.turn,
observe,
)
}
for (const type of postTurnEventTypes(primaryFixture)) {
await waitForRootEvent(subscription, sessionId, event => event.type === type, observe)
}
} finally {
subscription.close()
}
await harness.close()
const logs = await persistedLogs(sessionsRoot)
const finalWorkspace = await captureWorkspaceSnapshot(cwd, {
ignoredRootEntries: RUNTIME_WORKSPACE_ENTRIES,
})
return { results, notifications, observedMethods, logs, initialWorkspace, finalWorkspace, cwd }
} finally {
await harness.close()
await rm(cwd, { recursive: true, force: true })
}
}
/** Order logs parent-first, children by creation time (fixture layout order). */
function orderLogs(logs: PersistedLog[], expectedCount: number): PersistedLog[] {
const parents = logs.filter(log => typeof log.header.parentSession !== 'string')
const children = logs.filter(log => typeof log.header.parentSession === 'string')
.sort((left, right) => Number(left.header.createdAt) - Number(right.header.createdAt))
expect(parents).toHaveLength(1)
expect(children).toHaveLength(expectedCount - 1)
return [...parents, ...children]
}
async function writeHeaderSidecars(
scenario: CorpusScenario,
ordered: readonly PersistedLog[],
ctx: NormalizeContext,
): Promise<void> {
if (scenario.manifest.header.pin === true) {
const primary = ordered[0]
if (primary === undefined) throw new Error(`${scenario.name}: no primary header to snapshot`)
const prompts = normalizedSystemPrompts(primary.content, ctx)
const schemas = normalizedToolSchemas(primary.content, ctx)
if (scenario.manifest.header.systemPromptSource === undefined) {
await writeFile(
join(scenario.dir, 'system-prompt.expected.md'),
formatSystemPromptSnapshot(prompts[0] as string, prompts.slice(1)),
)
}
if (scenario.manifest.header.toolSchemasSource === undefined) {
await writeFile(
join(scenario.dir, 'tool-schemas.expected.json'),
formatToolSchemasSnapshot(schemas[0] as unknown[], schemas.slice(1)),
)
}
}
for (const index of scenario.manifest.header.childSystemPrompts ?? []) {
const child = ordered[index]
if (child === undefined) throw new Error(`${scenario.name}: no child ${index} prompt to snapshot`)
const prompts = normalizedSystemPrompts(child.content, ctx)
await writeFile(join(scenario.dir, `system-prompt.${index}.expected.md`), formatSystemPromptSnapshot(
prompts[0] as string,
prompts.slice(1),
))
}
for (const index of scenario.manifest.header.childToolSchemas ?? []) {
const child = ordered[index]
if (child === undefined) throw new Error(`${scenario.name}: no child ${index} schemas to snapshot`)
const schemas = normalizedToolSchemas(child.content, ctx)
await writeFile(join(scenario.dir, `tool-schemas.${index}.expected.json`), formatToolSchemasSnapshot(
schemas[0] as unknown[],
schemas.slice(1),
))
}
}
async function verifyHeaders(
scenario: CorpusScenario,
ordered: readonly PersistedLog[],
ctx: NormalizeContext,
): Promise<void> {
const pin = headerPin(scenario)
const pinFixture = await readFile(join(pin.dir, 'session.jsonl'), 'utf8')
const firstLine = pinFixture.split('\n').find(line => line.trim() !== '') ?? '{}'
const pinHeader = JSON.parse(firstLine) as JsonObject
const pinned = normalizedHeaders(pinFixture, {
sessionIds: [],
cwd: typeof pinHeader.cwd === 'string' ? pinHeader.cwd : '\0no-cwd\0',
})
const promptOwner = sourceScenario(pin, pin.manifest.header.systemPromptSource)
const schemaOwner = sourceScenario(pin, pin.manifest.header.toolSchemasSource)
const prompt = await readFile(join(promptOwner.dir, 'system-prompt.expected.md'), 'utf8')
const schemas = parseToolSchemasSnapshot(await readFile(join(schemaOwner.dir, 'tool-schemas.expected.json'), 'utf8'))
const schemaSets = [schemas.initial, ...schemas.changes]
const reconstructed = pinned.map((header, index) => restorePinnedToolSchemas(
header,
schemaSets[index] as unknown[],
))
const childPrompts = new Map<number, string>()
const childSchemas = new Map<number, unknown[][]>()
for (const index of scenario.manifest.header.childSystemPrompts ?? []) {
childPrompts.set(index, await readFile(join(scenario.dir, `system-prompt.${index}.expected.md`), 'utf8'))
}
for (const index of scenario.manifest.header.childToolSchemas ?? []) {
const child = parseToolSchemasSnapshot(await readFile(join(scenario.dir, `tool-schemas.${index}.expected.json`), 'utf8'))
childSchemas.set(index, [child.initial, ...child.changes])
}
for (const [logIndex, log] of ordered.entries()) {
const headers = normalizedHeaders(scrubSystemPrompts(log.content), ctx)
const prompts = normalizedSystemPrompts(log.content, ctx)
for (const [index, header] of headers.entries()) {
const selectedSchemas = childSchemas.get(logIndex)?.[index]
const base = reconstructed[index] ?? reconstructed[0]
const expected = selectedSchemas === undefined
? base
: { ...base as JsonObject, tools: selectedSchemas }
expect(header, `${scenario.name}: session ${logIndex} header ${index + 1}`).toEqual(expected)
expect(formatSystemPromptSnapshot(prompts[index] as string), `${scenario.name}: session ${logIndex} prompt ${index + 1}`)
.toBe(childPrompts.get(logIndex) ?? prompt)
}
}
}
describe('TypeScript SDK snapshots over the jsonrpc runtime', () => {
for (const scenario of sdkScenarios) {
const scenarioTest = recording && scenario.manifest.recording === 'authored' ? it.skip : it
scenarioTest(`${mode}s ${scenario.name} through dsh --profile sdk`, async () => {
const scenarioDir = scenario.dir
const notificationsExpectedPath = join(scenarioDir, 'notifications.expected.jsonl')
const resultExpectedPath = join(scenarioDir, 'result.expected.json')
const hasWireGoldens = existsSync(notificationsExpectedPath) || existsSync(resultExpectedPath)
const assertions = SDK_ASSERTIONS[scenario.name] ?? {}
const files = await fixtureFiles(scenario)
const { results, notifications, observedMethods, logs, initialWorkspace, finalWorkspace, cwd } = await runScenario(scenario)
const ordered = orderLogs(logs, recording ? logs.length : files.length)
const actualContext = contextOf(ordered, cwd)
let expectedContents = await Promise.all(files.map(file => readFile(file, 'utf8')))
if (recording) {
expectedContents = redactSessionSnapshotIds(stabilizeFixtureMessageIds(
ordered.map(log => scrubSessionSnapshot(tokenizeSessionFixtureCwd(log.content))),
expectedContents,
))
}
if (refreshing) {
const harvested = ordered.map((log): HarvestedLog => ({
id: String(log.header.id),
createdAt: Number(log.header.createdAt),
...typeof log.header.parentSession === 'string' ? { parentSession: log.header.parentSession } : {},
content: log.content,
}))
const replacements = refreshFixtureReplacements(harvested, expectedContents)
const refreshed = ordered.map((log, index) => {
const existing = expectedContents[index]
if (existing === undefined) throw new Error(`no fixture for persisted log ${index}`)
return scrubSessionSnapshot(tokenizeSessionFixtureCwd(
stabilizeRefreshLog(log.content, existing, replacements, actualContext),
))
})
expectedContents = redactSessionSnapshotIds(stabilizeFixtureMessageIds(refreshed, expectedContents))
}
if (recording || refreshing) {
const outputFiles = [
join(scenarioDir, 'session.jsonl'),
...Array.from({ length: expectedContents.length - 1 }, (_, index) => join(scenarioDir, `session.${index + 1}.jsonl`)),
]
await Promise.all(expectedContents.map((stable, index) => writeFile(outputFiles[index] as string, stable)))
if (recording) {
const retained = new Set(outputFiles.map(file => basename(file)))
for (const entry of await readdir(scenarioDir, { withFileTypes: true })) {
if (entry.isFile() && /^session\.[1-9]\d*\.jsonl$/u.test(entry.name) && !retained.has(entry.name)) {
await rm(join(scenarioDir, entry.name))
}
}
}
await writeHeaderSidecars(scenario, ordered, actualContext)
}
for (const [index, expected] of expectedContents.entries()) {
expect(scrubRequestHeaders(expected), `${scenario.name} session fixture ${index} carries request-header bulk`)
.toBe(expected)
}
expect(redactSessionSnapshotIds(expectedContents), `${scenario.name}: identity redaction fixed point`)
.toEqual(expectedContents)
// Persisted transcripts match the committed fixtures.
const expectedContext = contextOfContents(expectedContents)
const actualSnapshots = normalizeSessionSnapshots(ordered.map(log => log.content), actualContext)
const expectedSnapshots = normalizeSessionSnapshots(expectedContents, expectedContext)
for (const [index, actual] of actualSnapshots.entries()) {
expect(actual, `${scenario.name}: session ${index}`).toBe(expectedSnapshots[index])
}
await verifyHeaders(scenario, ordered, actualContext)
// Genuine SDK protocol cases retain their secondary wire projections.
const finalResult = results.at(-1)
if (hasWireGoldens) {
if (finalResult === undefined) throw new Error(`${scenario.name}: SDK wire golden has no run result`)
const normalizedNotifications = normalizeNotifications(notifications, actualContext)
const normalizedResult = normalizeResult(finalResult, actualContext)
if (recording || refreshing) {
await writeFile(notificationsExpectedPath, normalizedNotifications)
await writeFile(resultExpectedPath, normalizedResult)
}
expect(normalizedNotifications).toBe(await readFile(notificationsExpectedPath, 'utf8'))
expect(normalizedResult).toBe(await readFile(resultExpectedPath, 'utf8'))
}
// Wire-shape invariants that must hold in every mode.
if (scenario.manifest.workspace?.final === true) {
const expectedWorkspace = await captureExpectedWorkspaceSnapshot(join(scenario.dir, 'workspace.expected'))
expect(finalWorkspace, `${scenario.name}: complete final workspace`).toEqual(expectedWorkspace)
} else {
expect(finalWorkspace, `${scenario.name}: a changed workspace requires workspace.final`).toEqual(initialWorkspace)
}
if (assertions.expectedTools !== undefined) {
const parent = ordered[0]
if (parent === undefined) throw new Error(`${scenario.name} has no parent session log`)
expect(assembledToolRequirements(parent)).toEqual(assertions.expectedTools)
}
if (assertions.expectedSystem !== undefined) {
const parent = ordered[0]
if (parent === undefined) throw new Error(`${scenario.name} has no parent session log`)
expect(assembledSystem(parent)).toBe(assertions.expectedSystem)
}
if (assertions.expectedToolDescriptions !== undefined) {
const parent = ordered[0]
if (parent === undefined) throw new Error(`${scenario.name} has no parent session log`)
expect(assembledToolDescriptions(parent)).toMatchObject(assertions.expectedToolDescriptions)
}
if (assertions.runtimeContext !== undefined) {
const parent = ordered[0]
if (parent === undefined) throw new Error(`${scenario.name} has no parent session log`)
const contexts = assembledRuntimeContexts(parent)
if (assertions.runtimeContext === false) {
expect(contexts).toEqual([])
} else {
expect(contexts).toHaveLength(1)
const context = contexts[0] as string
for (const clause of assertions.runtimeContext.includes) expect(context).toContain(clause)
for (const clause of assertions.runtimeContext.excludes) expect(context).not.toContain(clause)
const system = assembledSystem(parent)
for (const clause of assertions.runtimeContext.includes) expect(system).not.toContain(clause)
}
}
if (ordered.length > 1) {
expect(observedMethods.has('subagent.started')).toBe(true)
expect(observedMethods.has('subagent.finished')).toBe(true)
}
})
}
})