Fruit of potato is called

The fruit of the potato plant is called a berry.
The fruits may look a lot like a tomato but are just the berry of the potato plant. The berries are not edible, it is toxic but they don't affect the development of the tubers. Although the fruit doesn't harm the growth of the tubers.
After flowering, potato plants produce small green fruits that resemble green cherry tomatoes, each containing about 300 seeds.