Fix test

Author: bendera

src/vscode-textfield/vscode-textfield.test.ts

@@ -29,9 +29,11 @@ describe('vscode-textfield', () => {
     );
     expect(el).shadowDom.to.equal(
       `
-      <slot name="content-before"></slot>
-      <input aria-label="" id="input" type="text">
-      <slot name="content-after"></slot>
+      <div class="root">
+        <slot name="content-before"></slot>
+        <input aria-label="" id="input" type="text">
+        <slot name="content-after"></slot>
+      </div>
       `
     );
   });