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
18 lines
751 B
JavaScript
18 lines
751 B
JavaScript
const {randomIntArrayInRange} = require('./_30s.js');
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test('randomIntArrayInRange is a Function', () => {
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expect(randomIntArrayInRange).toBeInstanceOf(Function);
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});
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const lowerLimit = Math.floor(Math.random() * 20);
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const upperLimit = Math.floor(lowerLimit + Math.random() * 10);
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const arr = randomIntArrayInRange(lowerLimit, upperLimit, 10);
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test('The returned array contains only integers', () => {
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expect(arr.every(x => typeof x === 'number')).toBeTruthy();
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});
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test('The returned array has the proper length', () => {
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expect(arr.length).toBe(10);
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});
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test("The returned array's values lie between provided lowerLimit and upperLimit (both inclusive).", () => {
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expect(arr.every(x => x >= lowerLimit && x <= upperLimit)).toBeTruthy();
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});
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