test: add converter tests

tests/integration/converters/ffmpeg.test.ts

@@ -0,0 +1,6 @@
+import { test } from "bun:test";
+import { convert } from "../../../src/converters/ffmpeg";
+import { runGoldenConversion } from "./golden";
+
+test("converts the sample PNG to the expected JPEG bytes", () =>
+  runGoldenConversion("ffmpeg", convert, "jpg"));

tests/integration/converters/golden.ts

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+import { expect } from "bun:test";
+import { mkdtemp, rm } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import path from "node:path";
+
+type Converter = (
+  filePath: string,
+  fileType: string,
+  convertTo: string,
+  targetPath: string,
+  options?: unknown,
+) => Promise<string>;
+
+export async function runGoldenConversion(
+  converterName: string,
+  convert: Converter,
+  outputExtension: string,
+) {
+  const outputDirectory = await mkdtemp(path.join(tmpdir(), `convertx-${converterName}-`));
+  const outputPath = path.join(outputDirectory, `sample.${outputExtension}`);
+  const inputPath = path.resolve("tests/integration/converters/inputs/sample.png");
+  const expectedPath = path.resolve(
+    `tests/integration/converters/outputs/${converterName}/sample.${outputExtension}`,
+  );
+
+  try {
+    await convert(inputPath, "png", outputExtension, outputPath);
+    expect(await Bun.file(outputPath).bytes()).toEqual(await Bun.file(expectedPath).bytes());
+  } finally {
+    await rm(outputDirectory, { recursive: true, force: true });
+  }
+}

tests/integration/converters/graphicsmagick.test.ts

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+import { test } from "bun:test";
+import { convert } from "../../../src/converters/graphicsmagick";
+import { runGoldenConversion } from "./golden";
+
+test("converts the sample PNG to the expected JPEG bytes", () =>
+  runGoldenConversion("graphicsmagick", convert, "jpg"));

tests/integration/converters/imagemagick.test.ts

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+import { test } from "bun:test";
+import { convert } from "../../../src/converters/imagemagick";
+import { runGoldenConversion } from "./golden";
+
+test("converts the sample PNG to the expected JPEG bytes", () =>
+  runGoldenConversion("imagemagick", convert, "jpg"));

tests/integration/converters/inkscape.test.ts

@@ -0,0 +1,6 @@
+import { test } from "bun:test";
+import { convert } from "../../../src/converters/inkscape";
+import { runGoldenConversion } from "./golden";
+
+test("converts the sample PNG to the expected SVG bytes", () =>
+  runGoldenConversion("inkscape", convert, "svg"));

tests/integration/converters/inputs/sample.svg

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+<svg xmlns="http://www.w3.org/2000/svg" xml:space="preserve" width="512" height="512" style="cursor:default" viewBox="0 0 96.983 132.292"><g transform="translate(-56.568 -82.29)"><path d="M124.878 83.82h-60.91a5.86 5.86 0 0 0-5.87 5.87v117.496a5.855 5.855 0 0 0 5.87 5.866h82.182a5.855 5.855 0 0 0 5.87-5.866v-92.55z" style="display:inline;fill:#111827;stroke:#aeb9d0;stroke-width:3.06006;stroke-dasharray:none;stroke-opacity:1"/><circle cx="84.331" cy="128.904" r="6.653" style="fill:#84cc16;fill-opacity:1;stroke-width:2.13082"/><circle cx="105.059" cy="128.904" r="6.653" style="fill:#fff;fill-opacity:1;stroke-width:2.13082"/><circle cx="125.786" cy="128.904" r="6.653" style="fill:#84cc16;fill-opacity:1;stroke-width:2.13082"/><circle cx="84.331" cy="148.438" r="6.653" style="fill:#fff;fill-opacity:1;stroke-width:2.13082"/><circle cx="105.059" cy="148.438" r="6.653" style="display:inline;fill:#84cc16;fill-opacity:1;stroke-width:2.13082"/><circle cx="125.786" cy="148.438" r="6.653" style="fill:#fff;fill-opacity:1;stroke-width:2.13082"/><circle cx="84.331" cy="167.971" r="6.653" style="fill:#84cc16;fill-opacity:1;stroke-width:2.13082"/><circle cx="105.059" cy="167.971" r="6.653" style="fill:#fff;fill-opacity:1;stroke-width:2.13082"/><circle cx="125.786" cy="167.971" r="6.653" style="fill:#84cc16;fill-opacity:1;stroke-width:2.13082"/><path d="M119.124 161.326h13.287v13.287h-13.287z" style="fill:#84cc16;fill-opacity:1;stroke:none;stroke-width:3.04496;stroke-opacity:1"/></g></svg>

tests/integration/converters/libjxl.test.ts

@@ -0,0 +1,6 @@
+import { test } from "bun:test";
+import { convert } from "../../../src/converters/libjxl";
+import { runGoldenConversion } from "./golden";
+
+test("converts the sample PNG to the expected JPEG XL bytes", () =>
+  runGoldenConversion("libjxl", convert, "jxl"));

tests/integration/converters/outputs/inkscape/sample.svg

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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   version="1.1"
+   id="svg1"
+   width="16"
+   height="16"
+   viewBox="0 0 16 16"
+   sodipodi:docname="sample.png"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <defs
+     id="defs1" />
+  <sodipodi:namedview
+     id="namedview1"
+     pagecolor="#ffffff"
+     bordercolor="#000000"
+     borderopacity="0.25"
+     inkscape:showpageshadow="2"
+     inkscape:pageopacity="0.0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#d1d1d1" />
+  <g
+     inkscape:groupmode="layer"
+     inkscape:label="Image"
+     id="g1">
+    <image
+       width="16"
+       height="16"
+       preserveAspectRatio="none"
+       xlink:href="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAABXElEQVQ4T2NkgILS2knrr1677A/j&#10;o9Py8go3HN0CbMI8tN8hyzHCOMEx+Xf37dmhhMsARkZGhujYxCNGmmauiYmOP2DqiDYApIGVlY0h&#10;JS17NdvfFxENDQ3/QGIkGQDSwMPDy5CWkddbWxJXgtMAHuF/DF/eMgEVc4Nd+uXLVwaYGIjv5Op+&#10;d+3iSSpYDZDW+s0Q3vmFYXkpD8OUhkVgA3Ia4hgiu78wrCznYXh6jRW/ASxs/xk07H8xXD/AxmCk&#10;bwg24NzF8wyaDr8YbhxkY/jzixG/AQrysgwTe1sYcgurGKRt74ANeHpYhWFyfxtDfnENw4OHj2ls&#10;ADYv3Hp8lkHZ4jfD3ZOsDB9fMJMeiKW9sQyB9V8ZNjRzAw1hw28AyM/cwGj8ihSNP/98YeAT/cfw&#10;6Q0Tw+/vBAIRV1JGFsebDgbOgJK6iRuuXb2CMzsju0xTS3dDb3NeIEgMAM4T4RHCgBZYAAAAAElF&#10;TkSuQmCC&#10;"
+       id="image1" />
+  </g>
+</svg>

tests/integration/converters/outputs/vtracer/sample.svg

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+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Generator: visioncortex VTracer 0.6.4 -->
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" width="16" height="16">
+<path d="M0 0 C1.61 -0.04 3.22 -0.08 4.88 -0.12 C5.78 -0.15 6.68 -0.17 7.62 -0.2 C10 -0 10 -0 12 2 C12.2 5.26 12.2 5.26 12.12 9.12 C12.11 10.41 12.09 11.69 12.07 13.01 C12.05 14 12.02 14.98 12 16 C8.04 16 4.08 16 0 16 C0 10.72 0 5.44 0 0 Z " fill="#37414C" transform="translate(2,0)"/>
+<path d="M0 0 C0.33 0 0.66 0 1 0 C1 2.97 1 5.94 1 9 C-2.3 9 -5.6 9 -9 9 C-9 7.35 -9 5.7 -9 4 C-6.03 4.33 -3.06 4.66 0 5 C0 3.35 0 1.7 0 0 Z " fill="#121927" transform="translate(12,6)"/>
+<path d="M0 0 C1.32 0 2.64 0 4 0 C4 0.66 4 1.32 4 2 C4.99 2 5.98 2 7 2 C7 3.32 7 4.64 7 6 C4.69 6 2.38 6 0 6 C0 4.02 0 2.04 0 0 Z " fill="#5A6E50" transform="translate(5,5)"/>
+</svg>

tests/integration/converters/vips.test.ts

@@ -0,0 +1,6 @@
+import { test } from "bun:test";
+import { convert } from "../../../src/converters/vips";
+import { runGoldenConversion } from "./golden";
+
+test("converts the sample PNG to the expected JPEG bytes", () =>
+  runGoldenConversion("vips", convert, "jpg"));

tests/integration/converters/vtracer.test.ts

@@ -0,0 +1,6 @@
+import { test } from "bun:test";
+import { convert } from "../../../src/converters/vtracer";
+import { runGoldenConversion } from "./golden";
+
+test("converts the sample PNG to the expected SVG bytes", () =>
+  runGoldenConversion("vtracer", convert, "svg"));