Validate actual rendering is successful in ReactTestRenderer usage

[MikeTheCanuck]

In #118 I've implemented a test that is meant to fail if rendering fails (a basic smoke test that the Component is working at runtime).

However, it's entirely possible that with #118 I am merely outputting data without actually having React render the component (without crashing).

Look further into https://youtu.be/9WXxda3MNuk?t=10m25s as the inspiration for these added tests - verify whether this is performing an actual render() and if not, add the additional logic that the subsequent slide indicates.