What are some good test cases for pytorch deep learning model and why?

Hi all, I’m a beginner to Pytorch and Deep Learning. For me, testing the deep learning algorithms to make sure it works as intended is a very important step.
So I want to create this topic for people to share their test cases (why use it and how to use it).

First, try MNIST.

MNIST Handwritten Digit Recognition in PyTorch
This article is helpful for beginners.