83a6a6ea32
* chore: make aware eslint that we use jest By setting up the jest environment, we no longer need to declare the 'test' global in the configuration. * chore: don't need to import expect, it's a jest environment global * chore: don't need to import expect when creating undefined test
21 lines
678 B
JavaScript
21 lines
678 B
JavaScript
const {any} = require('./_30s.js');
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test('any is a Function', () => {
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expect(any).toBeInstanceOf(Function);
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});
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test('Returns true for arrays with at least one truthy value', () => {
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expect(any([0, 1, 2, 3])).toBeTruthy();
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});
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test('Returns false for arrays with no truthy values', () => {
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expect(any([0, 0])).toBeFalsy();
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});
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test('Returns false for arrays with no truthy values', () => {
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expect(any([NaN, 0, undefined, null, ''])).toBeFalsy();
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});
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test('Returns true with predicate function', () => {
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expect(any([4, 1, 0, 3], x => x >= 1)).toBeTruthy();
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});
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test('Returns false with a predicate function', () => {
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expect(any([0, 1], x => x < 0)).toBeFalsy();
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});
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