Test environment

You can select with “jsdom”(default) and “node”.

How to apply this environment variable:

Method (1): Globally, in command line option

$ jest --env node

Method (2): Globally, in package.json

{
  "jest": {
    "testEnvironment": "node"
  }
}

Method (3): Per files, in *.js (available in Jest 20.0.0+)

/**
 * @jest-environment jsdom
 */

test("use jsdom in this test file", () => {
  const element = document.createElement("div");
  expect(element).not.toBeNull();
});

References