Jest/Enzyme document.createRange is not a function on mount

Question

When trying to use ezymes mount on a component that is rendering MaterialUI's Tooltip, there is an error stopping my tests:

TypeError: document.createRange is not a function

Answer 1

To fix this I defined document.createRange in my ./src/setupTest.js

  document.createRange = () => ({
    setStart: () => {},
    setEnd: () => {},
    commonAncestorContainer: {
      nodeName: "BODY",
      ownerDocument: document,
    },
  })