18 lines
409 B
JavaScript
18 lines
409 B
JavaScript
const expect = require('expect');
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const reduceSuccessive = require('./reduceSuccessive.js');
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test('reduceSuccessive is a Function', () => {
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expect(reduceSuccessive).toBeInstanceOf(Function);
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});
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test('Returns the array of successively reduced values', () => {
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expect(reduceSuccessive([1, 2, 3, 4, 5, 6], (acc, val) => acc + val, 0)).toEqual([
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0,
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1,
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3,
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6,
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10,
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15,
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21
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]);
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});
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