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
566 B
JavaScript
18 lines
566 B
JavaScript
const {binarySearch} = require('./_30s.js');
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test('binarySearch is a Function', () => {
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expect(binarySearch).toBeInstanceOf(Function);
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});
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test('Finds item in array', () => {
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expect(binarySearch([1, 4, 6, 7, 12, 13, 15, 18, 19, 20, 22, 24], 6)).toBe(2);
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});
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test('Returns -1 when not found', () => {
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expect(binarySearch([1, 4, 6, 7, 12, 13, 15, 18, 19, 20, 22, 24], 21)).toBe(-1);
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});
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test('Works with empty arrays', () => {
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expect(binarySearch([], 21)).toBe(-1);
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});
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test('Works for one element arrays', () => {
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expect(binarySearch([1], 1)).toBe(0);
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});
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