What is the ruling on eating food in public thoroughfares, and is that considered a awrah (private part that must be covered) or a barrier to the acceptance of testimony, and what are the etiquettes of eating?

Eating on the road is permissible Islamically, but it might be considered a breach of decorum for people of virtue in an environment where they do not do so. Among the etiquettes of eating are: saying Bismillah before it, washing hands before and after it, eating from what is in front of the eater, eating while seated, and praising Allah after it.