✅ Add simple test for SearchForm

This adds a basic test to make sure the LabelInput is working. To do better integration tests, we'll need something like Puppeteer/browser-based-testing (see testing-library/react-testing-library#376).

Author: pete-murphy

src/components/SearchForm.test.js

@@ -0,0 +1,17 @@
+import React from "react";
+import { render, fireEvent, cleanup } from "@testing-library/react";
+import "@testing-library/jest-dom/extend-expect";
+import SearchForm from "./SearchForm";
+
+afterEach(cleanup);
+
+test("LabelInput can be focused and accepts text input", () => {
+  const { getByLabelText } = render(<SearchForm />);
+
+  const labelInput = getByLabelText(/label/i);
+  labelInput.focus();
+  expect(labelInput).toHaveFocus();
+
+  fireEvent.change(labelInput, { target: { value: "foo" } });
+  expect(labelInput).toHaveValue("foo");
+});