10 lines
316 B
JavaScript
10 lines
316 B
JavaScript
const expect = require('expect');
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const {countOccurrences} = require('./_30s.js');
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test('countOccurrences is a Function', () => {
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expect(countOccurrences).toBeInstanceOf(Function);
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});
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test('Counts the occurrences of a value in an array', () => {
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expect(countOccurrences([1, 1, 2, 1, 2, 3], 1)).toEqual(3);
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});
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