Add basic template test

[micahellison]

#1653 mentions that there are no template tests (thank you @Briscoooe for noticing this!). I just wanted to get the ball rolling with a process for copying the templates to the sample directory and confirming that a template is used in a new entry.

Checklist

• I have read the contributing doc.
• I have included a link to the relevant issue number.
• I have checked to ensure there aren't other open pull requests
  for the same issue.
• I have written new tests for these changes, as needed.

[wren]

lgtm 🎸