Function buildHarnessUrl

testing/e2e/tests/structured-output-middleware.spec.ts:35–48

* E2E coverage for the structured-output × middleware interaction * introduced in TanStack/ai#390. Two contracts under test: * * 1. Phase observation: the middleware chain sees chunks tagged with * `ctx.phase === 'structuredOutput'` and `onFinish` is invoked exactly * once. Guards a

(
  testId?: string,
  aimockPort?: number,
  provider?: string,
  model?: string,
)

 */

function buildHarnessUrl(
  testId?: string,
  aimockPort?: number,
  provider?: string,
  model?: string,
): string {
  const params = new URLSearchParams()
  if (testId) params.set('testId', testId)
  if (aimockPort) params.set('aimockPort', String(aimockPort))
  if (provider) params.set('provider', provider)
  if (model) params.set('model', model)
  const qs = params.toString()
  return `/middleware-test${qs ? '?' + qs : ''}`
}

function parseStringArray(raw: string | null): Array<string> {
  if (!raw) return []