message: Test it doesn't move JSX elements without siblings
diff: @@ -436,6 +436,20 @@ class Path {
  expect(editor.code).toBe(originalCode);
  });
  + it("should not move the JSX element if it's the only one", async () => {
  + const code = `function App() {
  + return <>
  + [cursor]<h1>Hello!</h1>
  + </>;
  +}`;
  + const editor = new InMemoryEditor(code);
  + const originalCode = editor.code;
  +
  + await moveStatementUp(editor);
  +
  + expect(editor.code).toBe(originalCode);
  + });
  +
  it("should show an error message for multi-lines selections", async () => {
  const code = `console.log("First");
  [start]console.log("Second");
  