mpgon / stopPollingError

Reproduction of the stopPolling error on react apollo 3.1.0

How to reproduce

yarn
yarn test

test should pass

change package.json from

"@apollo/react-testing": "3.0.1",
"@apollo/react-hooks": "3.0.1",

to

"@apollo/react-testing": "3.1.0",
"@apollo/react-hooks": "3.1.0",

yarn
yarn test

test should fail