expect any function jest
expect(something).toEqual(expect.any(Function))
expect any function jest
expect(something).toEqual(expect.any(Function))
jest not tocontain
// .not - Test the opposite
const bestLaCroixFlavor = 'strawberry';
test('the best flavor is not coconut', () => {
expect(bestLaCroixFlavor).not.toBe('coconut');
});
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