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
499 B
JavaScript
21 lines
499 B
JavaScript
const {isPromiseLike} = require('./_30s.js');
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test('isPromiseLike is a Function', () => {
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expect(isPromiseLike).toBeInstanceOf(Function);
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});
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test('Returns true for a promise-like object', () => {
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expect(
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isPromiseLike({
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then() {
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return '';
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}
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})
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).toBeTruthy();
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});
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test('Returns false for an empty object', () => {
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expect(isPromiseLike({})).toBeFalsy();
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});
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test('Returns false for a normal function', () => {
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expect(isPromiseLike(Math.max)).toBeFalsy();
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});
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