srt-validator/tests/parser/serialize.spec.js

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import SRTParser from '../../src/parser';
import toMS from '../../src/parser/date';

test('Success: simple serialization', () => {
  const expected = `1
00:00:00,000 --> 01:01:01,001
Hello

2
00:00:00,000 --> 00:00:00,000
World`;

  expect(
    SRTParser.serialize([
      {
        sequenceNumber: 1,
        time: { start: 0, end: toMS.hour + toMS.minute + toMS.second + 1 },
        text: 'Hello',
      },
      {
        sequenceNumber: 2,
        time: { start: 0, end: 0 },
        text: 'World',
      },
    ])
  ).toBe(expected);
});

test('Success: simple serialization (WebVTT)', () => {
  const expected = `WEBVTT

1
00:00:00.000 --> 00:00:00.001
It
is
wednesday

2
00:00:00.001 --> 01:01:01.001
My dudes`;

  expect(
    SRTParser.serialize(
      [
        {
          sequenceNumber: 1,
          time: { start: 0, end: 1 },
          text: 'It\nis\nwednesday',
        },
        {
          sequenceNumber: 2,
          time: { start: 1, end: toMS.hour + toMS.minute + toMS.second + 1 },
          text: 'My dudes',
        },
      ],
      'WebVTT'
    )
  ).toBe(expected);
});

test('Failure: invalid format', () => {
  expect(() =>
    SRTParser.serialize(
      [
        {
          sequenceNumber: 1,
          time: { start: 0, end: 1 },
          text: 'It\nis\nwednesday',
        },
      ],
      'Gibberish'
    )
  ).toThrow(new Error('Unrecognized format: Gibberish'));
});