test: expand and optimize regression testing

.github/workflows/main.yml

@@ -1,11 +1,10 @@
 name: CI
+
 env:
   FORCE_COLOR: 2
   NODE: 20
+
 on:
-  push:
-    branches:
-      - main
   pull_request:
     branches:
       - main
@@ -26,18 +25,6 @@ jobs:
       - run: yarn install
       - run: yarn lint
       - run: yarn typecheck
-  regression:
-    name: Test regressions
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version: ${{ env.NODE }}
-          cache: yarn
-      - run: yarn install
-      - run: yarn playwright install --with-deps chromium
-      - run: yarn test-regression
   test:
     name: ${{ matrix.os }} Node.js ${{ matrix.node-version }}
     strategy:
@@ -61,3 +48,21 @@ jobs:
       - run: yarn playwright install --with-deps chromium
       - run: yarn test
       - run: yarn test-bundles
+  regression:
+    name: Test regressions
+    runs-on: ubuntu-latest
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.ref }}
+      cancel-in-progress: true
+    needs:
+      - lint
+      - test
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: ${{ env.NODE }}
+          cache: yarn
+      - run: yarn install
+      - run: yarn playwright install --with-deps chromium
+      - run: yarn test-regression

test/regression-extract.js

@@ -11,55 +11,44 @@
 
 const pipeline = util.promisify(stream.pipeline);
 
+/** Files to skip regression testing for due to parsing issues. */
 const exclude = [
   // animated
-  'svg/filters-light-04-f.svg',
-  'svg/filters-composite-05-f.svg',
+  'svgs/W3C_SVG_11_TestSuite/svg/filters-light-04-f.svg',
+  'svgs/W3C_SVG_11_TestSuite/svg/filters-composite-05-f.svg',
   // messed gradients
-  'svg/pservers-grad-18-b.svg',
+  'svgs/W3C_SVG_11_TestSuite/svg/pservers-grad-18-b.svg',
   // removing wrapping <g> breaks :first-child pseudo-class
-  'svg/styling-pres-04-f.svg',
+  'svgs/W3C_SVG_11_TestSuite/svg/styling-pres-04-f.svg',
   // rect is converted to path which matches wrong styles
-  'svg/styling-css-08-f.svg',
+  'svgs/W3C_SVG_11_TestSuite/svg/styling-css-08-f.svg',
   // complex selectors are messed because of converting shapes to paths
-  'svg/struct-use-10-f.svg',
-  'svg/struct-use-11-f.svg',
-  'svg/styling-css-01-b.svg',
-  'svg/styling-css-04-f.svg',
+  'svgs/W3C_SVG_11_TestSuite/svg/struct-use-10-f.svg',
+  'svgs/W3C_SVG_11_TestSuite/svg/struct-use-11-f.svg',
+  'svgs/W3C_SVG_11_TestSuite/svg/styling-css-01-b.svg',
+  'svgs/W3C_SVG_11_TestSuite/svg/styling-css-04-f.svg',
   // strange artifact breaks inconsistently  breaks regression tests
-  'svg/filters-conv-05-f.svg',
+  'svgs/W3C_SVG_11_TestSuite/svg/filters-conv-05-f.svg',
 ];
 
 /**
  * @param {string} url
  * @param {string} baseDir
- * @param {RegExp} include
  */
-const extractTarGz = async (url, baseDir, include) => {
+const extractTarGz = async (url, baseDir) => {
   const extract = tarStream.extract();
   extract.on('entry', async (header, stream, next) => {
     const name = header.name;
 
     try {
-      if (include == null || include.test(name)) {
-        if (
-          name.endsWith('.svg') &&
-          !exclude.includes(name) &&
-          !name.startsWith('svg/animate-')
-        ) {
-          const file = path.join(baseDir, name);
-          await fs.promises.mkdir(path.dirname(file), { recursive: true });
-          await pipeline(stream, fs.createWriteStream(file));
-        } else if (name.endsWith('.svgz')) {
-          // .svgz -> .svg
-          const file = path.join(baseDir, name.slice(0, -1));
-          await fs.promises.mkdir(path.dirname(file), { recursive: true });
-          await pipeline(
-            stream,
-            zlib.createGunzip(),
-            fs.createWriteStream(file),
-          );
-        }
+      if (
+        name.endsWith('.svg') &&
+        !exclude.includes(name) &&
+        !name.startsWith('svgs/W3C_SVG_11_TestSuite/svg/animate-')
+      ) {
+        const file = path.join(baseDir, header.name);
+        await fs.promises.mkdir(path.dirname(file), { recursive: true });
+        await pipeline(stream, fs.createWriteStream(file));
       }
     } catch (error) {
       console.error(error);
@@ -74,11 +63,10 @@
 
 (async () => {
   try {
-    console.info('Downloading W3C SVG 1.1 Test Suite and extracting files');
+    console.info('Downloading SVGO Test Suite and extracting files');
     await extractTarGz(
-      'https://www.w3.org/Graphics/SVG/Test/20110816/archives/W3C_SVG_11_TestSuite.tar.gz',
-      path.join(__dirname, 'regression-fixtures', 'w3c-svg-11-test-suite'),
-      /^svg\//,
+      'https://svg.github.io/svgo-test-suite/svgo-test-suite.tar.gz',
+      path.join(__dirname, 'regression-fixtures'),
     );
   } catch (error) {
     console.error(error);