test: Leaking test

[ph-fritsche]

• @testing-library/dom version: master = v7.29.4

Relevant code or config:

This test leaks setTimeout so that tests added below are not run by jest.

dom-testing-library/src/__tests__/helpers.js

Line 78 in 5bc9364

test('should not use realTimers when timers are not faked with useFakeTimers', () => {

What you did:

Added tests for a pull request.

What happened:

Jest fails to setTimeout for subsequent tests.
Adding a describe block with test, the tests are ignored without error messages.
Adding a describe block with test.only reveals the problem.

Suggested solution:

Enclose the tests in a describe block and define beforeAll/afterEach to properly clean up after the test.

[eps1lon]

Good catch. A PR would be appreciated!