added unit testing to dump unused css selectors

test/specs/grapesjs/index.js

@@ -376,5 +376,16 @@ describe('GrapesJS', () => {
       editor = obj.init(config);
       expect(editor.Commands.get('export-template').test).toEqual(1);
     });
+
+    it('Dump unused css classes/selectors', () => {
+      config.fromElement = 1;
+      config.storageManager = { type: 0 };
+      fixture.innerHTML = documentEl;
+      const editor = obj.init(config);
+      const css = editor.getCss({ dumpUnusedSelectors: 1 });
+      const protCss = editor.getConfig().protectedCss;
+      expect(editor.getStyle().length).toEqual(2);
+      expect(css).toEqual(`${protCss}.test2{color:red;}.test3{color:blue;}`);
+    });
   });
 });