Chore/tests (#73)

* chore/tests: install testing libraries
* chore/tests: upgrade dependencies
* chore/tests: configure linters
* chore/tests: add basic component tests
* chore/tests: version bump

client/src/features/control/__tests__/PlaybackControl.test.js

@@ -0,0 +1,18 @@
+import { render, screen } from '@testing-library/react';
+import SocketProvider from 'app/context/socketContext';
+import PlaybackControl from '../PlaybackControl';
+
+test('check that playback control renders', async () => {
+  // need to inject the socket provider to make component
+  // render without failing
+  render(
+    <SocketProvider>
+      <PlaybackControl />
+    </SocketProvider>
+  );
+
+  // Text labels for times
+  // substring match, ignore case
+  expect(screen.getByText(/started/i)).toBeInTheDocument();
+  expect(screen.getByText(/finish/i)).toBeInTheDocument();
+});