Refactor Tests

[Xiot]

Currently the tests directly reference the components in 'showcase'.
Tests should be using their own fixtures to test.

Move tests to use jest

[reitlepax]

I can look into migrating the tests to jest

[reitlepax]

Tests with jest display many warning/errors coming from the react components, I am going to work on fixing them to make it easier to read tests and because many of these messages also appear in the browser console

For instance:

• Error: Not implemented: HTMLCanvasElement.prototype.getContext (without installing the canvas npm package)
• Warning: The tag <g> is unrecognized in this browser. If you meant to render a React component, start its name with an uppercase letter.
• Warning: componentWillReceiveProps has been renamed, and is not recommended for use. See https://fb.me/react-unsafe-component-lifecycles for details.

[Xiot]

The warning for <g> is interesting, as it is a valid svg tag.
https://developer.mozilla.org/en-US/docs/Web/SVG/Element/g

[reitlepax]

It is valid but the warning appears when it is not wrapped by an svg tag. I'm currently working on fixing these tests

[Xiot]

ah.. that was my next thought. Thanks for cleaning these up.