test(scripts): add svgo plugin test

.github/workflows/pull_request.yml

@@ -77,3 +77,19 @@ jobs:
           # only affects current branch
           skip_step: install
           build_script: "icons-build"
+
+  test_scripts:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./packages/icons-scripts
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 14
+          cache: "yarn"
+      - run: yarn install --frozen-lockfile --ignore-scripts
+      - name: Run tests
+        run: yarn test

packages/icons-scripts/package.json

@@ -13,7 +13,12 @@
     "yarn": "^1.21.1",
     "node": ">12.0.0"
   },
-  "devDependencies": {},
+  "scripts": {
+    "test": "jest"
+  },
+  "devDependencies": {
+    "jest": "^28.1.1"
+  },
   "dependencies": {
     "@swc/cli": "^0.1.57",
     "@swc/core": "^1.2.204",

packages/icons-scripts/scripts/plugins/tests/_index.test.js

@@ -0,0 +1,60 @@
+"use strict";
+
+const fs = require("fs");
+const path = require("path");
+const EOL = require("os").EOL;
+const regEOL = new RegExp(EOL, "g");
+const regFilename = /^(.*)\.(\d+)\.svg$/;
+const { optimize } = require("svgo");
+
+describe("plugins tests", function () {
+  fs.readdirSync(__dirname).forEach(function (file) {
+    var match = file.match(regFilename),
+      index,
+      name;
+
+    if (match) {
+      name = match[1];
+      index = match[2];
+
+      file = path.resolve(__dirname, file);
+
+      it(name + "." + index, function () {
+        return readFile(file).then(function (data) {
+          // remove description
+          const items = normalize(data).split(/\s*===\s*/);
+          const test = items.length === 2 ? items[1] : items[0];
+
+          // extract test case
+          const [original, should, params] = test.split(/\s*@@@\s*/);
+          const plugin = {
+            params: params ? JSON.parse(params) : {},
+            ...require("../" + name),
+          };
+
+          const result = optimize(original, {
+            path: file,
+            plugins: [plugin],
+            js2svg: { pretty: true },
+          });
+
+          expect(result.error).not.toEqual(expect.anything());
+          expect(normalize(result.data)).toEqual(should);
+        });
+      });
+    }
+  });
+});
+
+function normalize(file) {
+  return file.trim().replace(regEOL, "\n");
+}
+
+function readFile(file) {
+  return new Promise(function (resolve, reject) {
+    fs.readFile(file, "utf8", function (err, data) {
+      if (err) return reject(err);
+      resolve(data);
+    });
+  });
+}