chore: run unit tests for Firefox on MacOS

.github/workflows/main.yml

@@ -113,6 +113,13 @@ jobs:
         run: |
           npm run unit
 
+      - name: Run unit tests on Firefox
+        env:
+          FIREFOX: true
+          MOZ_WEBRENDER: 0
+        run: |
+          npm run funit
+
   windows:
     # https://github.com/actions/virtual-environments#available-environments
     runs-on: windows-latest

test/keyboard.spec.ts

@@ -127,7 +127,7 @@ describe('Keyboard', function () {
       await page.evaluate(() => document.querySelector('textarea').value)
     ).toBe('嗨a');
   });
-  it('should report shiftKey', async () => {
+  itFailsFirefox('should report shiftKey', async () => {
     const { page, server } = getTestState();
 
     await page.goto(server.PREFIX + '/input/keyboard.html');