message: Added a test for invalid command provided.
diff: @@ -9,6 +9,11 @@ describe("<CommandReference />", () => {
  const commandName = container.querySelector(".name");
  expect(commandName).toHaveTextContent("name ");
  });
  + it("should render a helpful message when no name provided", () => {
  + const { container } = renderIntoDocument(<CommandReference currentCommand={{}}/>);
  + const commandName = container.querySelector(".invalid-command");
  + expect(commandName).toHaveTextContent("Invalid command name provided.");
  + });
  it("should render a name with a target", () => {
  const { container } = renderIntoDocument(<CommandReference currentCommand={{name: "name", target: {name: "target"}}}/>);
  const commandName = container.querySelector(".name");
  