Create Tests for Button Layout

[olivcamj]

Feature Description
Add Tests for the Button Component.

Major User Stories/tasks

• User should be able to create a button with text only, icon only or both text and icon.
• User should be able to make a button disabled (preventing users from using the button).
• User should be able to see a consistent UI for all buttons.

Additional Considerations
Include anything else that may be helpful. For example, links to external resources.