Add missing test for unmount

Author: afontcu

src/__tests__/render.js

@@ -75,3 +75,15 @@ test('baseElement matches container if not custom baseElement is provided', () =
     </blink>
   `)
 })
+
+test('unmounts', () => {
+  const {getByTestId, unmount, queryByTestId} = render({
+    template: `<div data-testid="node">Hi</div>`,
+  })
+
+  expect(getByTestId('node')).toBeInTheDocument()
+
+  unmount()
+
+  expect(queryByTestId('node')).not.toBeInTheDocument()
+})