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921d377 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | /**
* Unit tests for streamTts — the pluggable streaming TTS surface.
* Anchored to § 5.3 of docs/analysis/voice-call-streaming-design.md.
*/
import { describe, it, expect } from 'vitest';
import { createStreamingTts, streamTtsInternals } from './streamTts';
const { splitIntoSentences, NullStreamTts } = streamTtsInternals;
describe('splitIntoSentences', () => {
it('splits on sentence enders followed by whitespace', () => {
const { sentences, remainder } = splitIntoSentences('hello there. how are you? fine! and you');
expect(sentences).toEqual([
'hello there.',
'how are you?',
'fine!',
]);
expect(remainder).toBe('and you');
});
it('keeps partial trailing text as remainder', () => {
const { sentences, remainder } = splitIntoSentences('partial sentence');
expect(sentences).toEqual([]);
expect(remainder).toBe('partial sentence');
});
it('is safe on empty input', () => {
const { sentences, remainder } = splitIntoSentences('');
expect(sentences).toEqual([]);
expect(remainder).toBe('');
});
it('splits on newlines + semicolons', () => {
const { sentences, remainder } = splitIntoSentences('one thing;\n another thing.\n tail');
// Exact count + order matters so regressions are obvious.
expect(sentences.length).toBeGreaterThanOrEqual(2);
expect(sentences[0]).toContain('one thing');
expect(remainder.trim()).toBe('tail');
});
});
describe('NullStreamTts fallback', () => {
it('is safe to call every method; never claims to be speaking', () => {
const tts = new NullStreamTts();
expect(tts.isSpeaking).toBe(false);
tts.appendDelta('hello');
tts.flush();
tts.stop();
expect(tts.isSpeaking).toBe(false);
});
});
describe('createStreamingTts factory', () => {
it('returns an object implementing the StreamingTts contract', () => {
const tts = createStreamingTts();
expect(typeof tts.appendDelta).toBe('function');
expect(typeof tts.flush).toBe('function');
expect(typeof tts.stop).toBe('function');
expect(typeof tts.isSpeaking).toBe('boolean');
});
});
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