68 lines
2.3 KiB
JavaScript
68 lines
2.3 KiB
JavaScript
import { describe, it, expect, beforeAll, afterAll } from 'vitest';
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import fs from 'node:fs/promises';
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import path from 'node:path';
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import os from 'node:os';
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import sharp from 'sharp';
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import { registerImageToPdfConverter } from '../../src/converters/imageToPdf.js';
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import { resolve, listTargetFormats } from '../../src/converters/registry.js';
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import { detectInputMime } from '../../src/mime.js';
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let tmpDir;
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beforeAll(async () => {
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registerImageToPdfConverter();
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tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), 'converter-image-to-pdf-'));
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});
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afterAll(async () => {
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await fs.rm(tmpDir, { recursive: true, force: true });
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});
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describe('image to PDF converter', () => {
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it('registers pdf as a target for every image format', () => {
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expect(listTargetFormats('png')).toContain('pdf');
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expect(listTargetFormats('jpg')).toContain('pdf');
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});
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it('converts a PNG fixture into a valid PDF', async () => {
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const inputPath = path.join(import.meta.dirname, '..', 'fixtures', 'sample.png');
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const outputPath = path.join(tmpDir, 'output.pdf');
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const entry = resolve('png', 'pdf');
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await entry.convert(inputPath, outputPath);
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const detected = await detectInputMime(outputPath);
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expect(detected.mime).toBe('application/pdf');
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});
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it('embeds a JPEG instead of a PNG when a quality is given, shrinking the output for a noisy image', async () => {
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const inputPath = path.join(tmpDir, 'noisy.png');
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await sharp({
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create: {
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width: 256,
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height: 256,
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channels: 3,
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noise: { type: 'gaussian', mean: 128, sigma: 40 },
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},
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})
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.png()
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.toFile(inputPath);
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const defaultOutputPath = path.join(tmpDir, 'default.pdf');
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const compressedOutputPath = path.join(tmpDir, 'compressed.pdf');
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const entry = resolve('png', 'pdf');
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await entry.convert(inputPath, defaultOutputPath);
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await entry.convert(inputPath, compressedOutputPath, { quality: 20 });
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const compressedDetected = await detectInputMime(compressedOutputPath);
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expect(compressedDetected.mime).toBe('application/pdf');
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const [defaultStat, compressedStat] = await Promise.all([
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fs.stat(defaultOutputPath),
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fs.stat(compressedOutputPath),
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]);
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expect(compressedStat.size).toBeLessThan(defaultStat.size);
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});
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});
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