chenglou/pretext · error · Error

Missing pre-wrap result for ${testCase.label}

Error message

Missing pre-wrap result for ${testCase.label}

What it means

Thrown by the permanent pre-wrap oracle checker after a browser batch reports status:'ready' but a PRE_WRAP_ORACLE_CASES label is absent from the posted results. The script builds a Map<label, report> from the batch and requires every oracle case to be present. Unlike symbol-check.ts and keep-all-check.ts, this loop has no caseRunsInBrowser guard, so it expects every case for every browser unconditionally.

Source

Thrown at scripts/pre-wrap-check.ts:138

        `&reportEndpoint=${encodeURIComponent(reportServer.endpoint)}`
      const batchReport = await loadPostedReport(
        session,
        url,
        () => reportServer.waitForReport(null),
        requestId,
        reportBrowser,
        timeoutMs,
      )
      if (batchReport.status === 'error') {
        throw new Error(batchReport.message ?? 'pre-wrap batch failed')
      }

      const batchResults = batchReport.results ?? []
      const reportsByLabel = new Map(batchResults.map(result => [result.label, result.report]))
      for (const testCase of PRE_WRAP_ORACLE_CASES) {
        const report = reportsByLabel.get(testCase.label)
        if (report === undefined) {
          throw new Error(`Missing pre-wrap result for ${testCase.label}`)
        }
        printCaseResult(browser, testCase, report)
        if (!reportIsExact(report)) ok = false
      }
    } finally {
      reportServer.close()
    }
  } finally {
    session?.close()
    serverProcess?.kill()
    lock.release()
  }

  return ok
}

const port = await getAvailablePort(requestedPort === 0 ? null : requestedPort)
let overallOk = true

View on GitHub (pinned to ac49b09b7d)

Solutions

1. Restart bun start / the page server so pages/probe.ts bundle matches the current PRE_WRAP_ORACLE_CASES labels.
2. Confirm no PRE_WRAP_ORACLE_CASES entry gained a browsers: restriction; if one did, port the caseRunsInBrowser guard from symbol-check.ts:116,157 into pre-wrap-check.ts.
3. Re-run the checker (single-owner browser lock + side-channel POST can drop a report intermittently); if it reproduces, log batchResults to see which labels arrived.
4. Diff PRE_WRAP_ORACLE_CASES between the script import and the served page bundle (both import ../src/test-data.ts; verify the resolved file matches).

Example fix

// before (pre-wrap-check.ts:135)
for (const testCase of PRE_WRAP_ORACLE_CASES) {
  const report = reportsByLabel.get(testCase.label)
  if (report === undefined) throw new Error(`Missing pre-wrap result for ${testCase.label}`)

// after
function caseRunsInBrowser(c: ProbeOracleCase, b: AutomationBrowserKind): boolean {
  return c.browsers === undefined || c.browsers.includes(b)
}
for (const testCase of PRE_WRAP_ORACLE_CASES) {
  if (!caseRunsInBrowser(testCase, browser)) continue
  const report = reportsByLabel.get(testCase.label)
  if (report === undefined) throw new Error(`Missing pre-wrap result for ${testCase.label}`)

// After building reportsByLabel, assert the page returned every case that should run in this browser.
const expected = PRE_WRAP_ORACLE_CASES.filter(c => c.browsers === undefined || c.browsers.includes(browser))
const missing = expected.filter(c => !reportsByLabel.has(c.label)).map(c => c.label)
if (missing.length > 0) {
  console.error('pre-wrap-check: page omitted labels (restart page server):', missing)
  process.exit(2)
}

const caseRunsInBrowser = (c: ProbeOracleCase, b: AutomationBrowserKind): boolean =>
  c.browsers === undefined || c.browsers.includes(b)
const hasLabel = (m: Map<string, ProbeReport>, t: ProbeOracleCase): boolean => m.has(t.label)

When it happens

Trigger: Run pre-wrap-check when the /probe?batch=pre-wrap page posts {status:'ready', results:[...]} with fewer entries than PRE_WRAP_ORACLE_CASES.length. Concrete causes: a case label edited in src/test-data.ts while the served page bundle is stale (HMR/dist drift); the page's runProbeBatch skipped a case; or a future browser-restricted pre-wrap case is added (no guard exists to skip it script-side).

Common situations: Editing PRE_WRAP_ORACLE_CASES while bun start is serving an old bundle; running the checker against a stale --port page server; adding a browsers:[...] field to a pre-wrap case (page filters it, script still requires it).

Related errors

• symbol batch failed
• Firefox is not currently supported for symbol oracle checks
• Timed out waiting for local port ${port}
• Timed out waiting for ${browser} automation lock
• ${session.message ?? session.error}

AI-assisted analysis of chenglou/pretext@ac49b09b7d (2026-08-12). Data as JSON: /api/errors/5324dff3b4a4edbd. Report an issue: GitHub.