How to turn off local fonts to test google fonts?

Prior art:

• Can I disable my local font in chrome?

• https://superuser.com/questions/292666/how-to-disable-permission-to-read-system-fonts-and-browser-plugin-details-in

Is there a way to disable system fonts temporarily in any browser?

The only solution I can find is to name the font something that doesn't collide with local fonts. I don't like that solution cause:

1. I'd rather refer to fonts by correct name.

2. It doesn't work with inline fonts via stylesheet like how Google serves fonts.

So, anyone know how?

If you are on a Mac just open up the 'Font Book' app and disable the font.