Node.js · Middle · Question 55 of 75

How do you mock a function with the built-in test runner?

1Mocks are not supported in node:test
✓Correct answer: const fn = mock.fn() from node:test, then check fn.mock.calls
3jest.fn() works in node:test without imports

Explanation

node:test also has mock.method for object methods, mock.timers for fake timers and module mocking.

Further reading

Node.js API: Test runner ↗

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