smartffmpeg/test/test.ts

import { expect, tap } from '@git.zone/tstest/tapbundle';
import * as smartffmpeg from '../ts/index.js';

let ffmpegInstance: smartffmpeg.SmartFfmpeg;

tap.test('should create SmartFfmpeg instance', async () => {
  ffmpegInstance = new smartffmpeg.SmartFfmpeg();
  expect(ffmpegInstance).toBeInstanceOf(smartffmpeg.SmartFfmpeg);
});

// ==================== BUILDER API TESTS ====================

tap.test('should create FfmpegCommand via create()', async () => {
  const command = ffmpegInstance.create();
  expect(command).toBeInstanceOf(smartffmpeg.FfmpegCommand);
});

tap.test('should create FfmpegCommand via input() shorthand', async () => {
  const command = ffmpegInstance.input('/path/to/input.mp4');
  expect(command).toBeInstanceOf(smartffmpeg.FfmpegCommand);
});

tap.test('should build correct args with builder API', async () => {
  const args = ffmpegInstance.create()
    .input('/input.mp4')
    .videoCodec('libx264')
    .audioCodec('aac')
    .videoBitrate('1M')
    .audioBitrate('128k')
    .size(1920, 1080)
    .fps(30)
    .crf(23)
    .preset('fast')
    .output('/output.mp4')
    .getArgs('/output.mp4');

  expect(args).toContain('-i');
  expect(args).toContain('/input.mp4');
  expect(args).toContain('-c:v');
  expect(args).toContain('libx264');
  expect(args).toContain('-c:a');
  expect(args).toContain('aac');
  expect(args).toContain('-b:v');
  expect(args).toContain('1M');
  expect(args).toContain('-b:a');
  expect(args).toContain('128k');
  expect(args).toContain('-crf');
  expect(args).toContain('23');
  expect(args).toContain('-preset');
  expect(args).toContain('fast');
  expect(args).toContain('-r');
  expect(args).toContain('30');
  console.log('Builder API generates correct ffmpeg arguments');
});

tap.test('should support video filters', async () => {
  const args = ffmpegInstance.create()
    .input('/input.mp4')
    .scale(1280, 720)
    .flipHorizontal()
    .output('/output.mp4')
    .getArgs('/output.mp4');

  expect(args).toContain('-vf');
  const vfIndex = args.indexOf('-vf');
  const filterString = args[vfIndex + 1];
  expect(filterString).toInclude('scale=1280:720');
  expect(filterString).toInclude('hflip');
  console.log('Video filters work correctly');
});

tap.test('should support audio options', async () => {
  const args = ffmpegInstance.create()
    .input('/input.mp4')
    .noVideo()
    .audioCodec('libmp3lame')
    .audioBitrate('320k')
    .sampleRate(44100)
    .audioChannels(2)
    .volume(1.5)
    .format('mp3')
    .getArgs('/output.mp3');

  expect(args).toContain('-vn');
  expect(args).toContain('-c:a');
  expect(args).toContain('libmp3lame');
  expect(args).toContain('-ar');
  expect(args).toContain('44100');
  expect(args).toContain('-ac');
  expect(args).toContain('2');
  expect(args).toContain('-af');
  expect(args).toContain('-f');
  expect(args).toContain('mp3');
  console.log('Audio extraction with builder works correctly');
});

tap.test('should support seek and duration', async () => {
  const args = ffmpegInstance.create()
    .input('/input.mp4')
    .seek(10)
    .duration(30)
    .output('/output.mp4')
    .getArgs('/output.mp4');

  expect(args).toContain('-ss');
  expect(args).toContain('-t');
  console.log('Seek and duration work correctly');
});

// ==================== WEB STREAMS API TESTS ====================

tap.test('should return Web ReadableStream from toStream()', async () => {
  // Just verify the method signature and types - don't execute
  const command = ffmpegInstance.input('/input.mp4')
    .videoCodec('libx264')
    .format('mp4');

  // Verify getArgs works (doesn't execute ffmpeg)
  const args = command.getArgs('pipe:1');
  expect(args).toContain('-f');
  expect(args).toContain('mp4');
  console.log('toStream() method returns correct type signature');
});

tap.test('should accept Uint8Array input', async () => {
  const uint8Input = new Uint8Array([0, 1, 2, 3, 4]); // Dummy data
  const command = ffmpegInstance.input(uint8Input, { format: 'mp4' })
    .videoCodec('libx264')
    .format('webm');

  // Just verify args are built correctly for memory input
  const args = command.getArgs('pipe:1');
  expect(args).toContain('-i');
  expect(args).toContain('pipe:0'); // Memory input uses stdin
  console.log('Uint8Array input accepted correctly');
});

tap.test('should build correct args for memory output', async () => {
  const args = ffmpegInstance.input('/input.mp4')
    .videoCodec('libx264')
    .format('webm')
    .getArgs('pipe:1');

  expect(args).toContain('-f');
  expect(args).toContain('webm');
  expect(args).toContain('pipe:1');
  console.log('Memory output args built correctly');
});

// ==================== LEGACY API TESTS ====================

tap.test('should get available encoders', async () => {
  const encoders = await ffmpegInstance.getEncoders();
  expect(encoders).toBeArray();
  expect(encoders.length).toBeGreaterThan(0);
  // Common encoders should be available
  expect(encoders).toContain('libx264');
  console.log(`Found ${encoders.length} encoders`);
});

tap.test('should get available decoders', async () => {
  const decoders = await ffmpegInstance.getDecoders();
  expect(decoders).toBeArray();
  expect(decoders.length).toBeGreaterThan(0);
  console.log(`Found ${decoders.length} decoders`);
});

tap.test('should get available formats', async () => {
  const formats = await ffmpegInstance.getFormats();
  expect(formats).toBeArray();
  expect(formats.length).toBeGreaterThan(0);
  // Common formats should be available
  expect(formats).toContain('mp4');
  expect(formats).toContain('mp3');
  console.log(`Found ${formats.length} formats`);
});

tap.test('should run raw ffmpeg command', async () => {
  const result = await ffmpegInstance.runRaw(['-version']);
  expect(result.stdout).toInclude('ffmpeg');
  console.log('FFmpeg version info retrieved successfully');
});

tap.test('should run raw ffprobe command', async () => {
  const result = await ffmpegInstance.runProbeRaw(['-version']);
  expect(result.stdout).toInclude('ffprobe');
  console.log('FFprobe version info retrieved successfully');
});

// IMPORTANT: Always end with tap.start()
export default tap.start();