Function textTurn

packages/ai/tests/chat-structured-output-null-normalization.test.ts:43–68

A native-combined turn: the schema-constrained JSON arrives as assistant text.

(json: string)

/** A native-combined turn: the schema-constrained JSON arrives as assistant text. */
function textTurn(json: string): Array<StreamChunk> {
  const timestamp = Date.now()
  return [
    { type: EventType.RUN_STARTED, runId: 'r1', threadId: 't1', timestamp },
    {
      type: EventType.TEXT_MESSAGE_START,
      messageId: 'm1',
      role: 'assistant',
      timestamp,
    },
    {
      type: EventType.TEXT_MESSAGE_CONTENT,
      messageId: 'm1',
      delta: json,
      timestamp,
    },
    { type: EventType.TEXT_MESSAGE_END, messageId: 'm1', timestamp },
    {
      type: EventType.RUN_FINISHED,
      runId: 'r1',
      threadId: 't1',
      finishReason: 'stop',
      timestamp,
    },
  ] as Array<StreamChunk>
}

describe('structured output null normalization', () => {
  it('drops a provider null for an optional field so validation passes', async () => {