Upgrade node-canvas dependency and test (#60)

* install font to make a direct comparison

* upgrade canvas

Author: mapmeld

.github/workflows/node.yml

@@ -15,5 +15,8 @@ jobs:
     - name: Install dependencies
       run: npm ci
 
+    - name: Install CJK font
+      run: wget https://github.com/googlefonts/noto-cjk/raw/main/Sans/OTF/SimplifiedChinese/NotoSansCJKsc-Regular.otf -O /usr/share/fonts/NotoSansCJKsc-Regular.otf && fc-cache -fv
+
     - name: Run tests
       run: npm test

package-lock.json

@@ -33,7 +33,7 @@
     "index.d.ts"
   ],
   "devDependencies": {
-    "canvas": "3.1.2",
+    "canvas": "^3.2.0",
     "eslint": "^9.32.0",
     "eslint-config-mourner": "^4.1.0",
     "eslint-plugin-html": "^8.1.3",

package.json

@@ -106,12 +106,11 @@ test('does not return negative-width glylphs', () => {
     assert.equal(glyph.width, 6); // zero-width glyph with 3px buffer
 });
 
-/*
 test('renders Chinese and Japanese versions of characters', () => {
-    const sdf1 = new MockTinySDF({lang: 'zh'});
+    // assumes Noto Sans CJK SC font is installed
+    const sdf1 = new MockTinySDF({fontFamily: 'Noto Sans CJK SC', lang: 'zh'});
     const glyph1 = sdf1.draw('门');
-    const sdf2 = new MockTinySDF({lang: 'ja'});
+    const sdf2 = new MockTinySDF({fontFamily: 'Noto Sans CJK SC', lang: 'ja'});
     const glyph2 = sdf2.draw('门');
     assert.notDeepStrictEqual(glyph1.data, glyph2.data);
 });
-*/