feat(Tests): added example tests

src/components/rocket-launcher/__tests__/Rocket.test.tsx

@@ -0,0 +1,24 @@
+import {
+  render, screen,
+} from '@testing-library/react';
+import userEvent from '@testing-library/user-event';
+import { expect } from 'chai';
+import React from 'react';
+
+import { Rocket } from '../Rocket';
+
+describe('Rocket', () => {
+  it('renders rocket', () => {
+    const result = render(<Rocket />);
+
+    const rocket = result.getByText('🚀');
+
+    expect(rocket).to.exist;
+
+    userEvent.click(rocket);
+
+    const fire = screen.getByText('🔥');
+
+    expect(fire).to.exist;
+  });
+});

src/components/rocket-launcher/__tests__/useRocket.test.tsx

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+import { renderHook } from '@testing-library/react-hooks/native';
+import { expect } from 'chai';
+import { act } from 'react-dom/test-utils';
+
+import { useRocket } from '../useRocket';
+
+describe('useRocket', () => {
+  it('fires a rocket', () => {
+    const { result } = renderHook(() => useRocket());
+
+    expect(result.current.isFired).to.be.false;
+
+    act(() => result.current.fire());
+
+    expect(result.current.isFired).to.be.true;
+  });
+});