21 lines
476 B
JavaScript
21 lines
476 B
JavaScript
const expect = require('expect');
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const memoize = require('./memoize.js');
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test('memoize is a Function', () => {
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expect(memoize).toBeInstanceOf(Function);
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});
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const f = x => x * x;
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const square = memoize(f);
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test('Function works properly', () => {
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expect(square(2), 4).toBe()
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});
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test('Function works properly', () => {
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expect(square(3), 9).toBe()
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});
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test('Cache stores values', () => {
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expect(Array.from(square.cache), [[2,4],[3,9]]).toEqual()
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});
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