feat(monospace): ExportCss embeds woff2 as base64 in CSS

Self-contained CSS for HTML export and print-preview iframe.
2026-08-23 23:10:17 +05:30 · 2026-08-23 19:31:33 +05:30
parent 9fd81ff5a0
commit 228ee04b09
2 changed files with 61 additions and 0 deletions
@@ -0,0 +1,27 @@
+const fs = require('fs');
+const path = require('path');
+const ExportCss = require('../src/main/ExportCss');
+
+describe('ExportCss.build', () => {
+  const fakeFontPath = path.join(__dirname, 'fixtures', 'fake.woff2');
+  const fixture = Buffer.from('woff2-binary-fake-data');
+
+  beforeAll(() => {
+    fs.mkdirSync(path.dirname(fakeFontPath), { recursive: true });
+    fs.writeFileSync(fakeFontPath, fixture);
+  });
+  afterAll(() => fs.rmSync(path.dirname(fakeFontPath), { recursive: true, force: true }));
+
+  test('emits a self-contained CSS with embedded @font-face', () => {
+    const css = ExportCss.build({ activeFontPath: fakeFontPath, family: 'JetBrains Mono', weight: 400, ligatures: false });
+    expect(css).toMatch(/@font-face\s*\{[^}]*src:\s*url\('data:font\/woff2;base64,/);
+    expect(css).toContain("font-family: 'JetBrains Mono'");
+    expect(css).toMatch(/font-feature-settings:[^;]*liga[^;]*0/);
+  });
+
+  test('falls back to family-only CSS when font path is missing', () => {
+    const css = ExportCss.build({ activeFontPath: null, family: 'Fira Code', weight: 700, ligatures: true });
+    expect(css).not.toContain('data:font/woff2;');
+    expect(css).toContain("font-family: 'Fira Code'");
+  });
+});