How to check if a font supports non-English characters?

Site URL: https://www.porodicnekompanije.com

Hi guys!

Our website is in Bosnian / Croatian / Serbian language. 

This means it will contain five non-English characters: č, ć, đ, š, and ž.

The problem is that these characters are often not displayed correctly in many fonts.

Is there a quick way to check if a font that is offered in the template actually supports our local characters?

Thanks in advance!