35 lines
612 B
JavaScript
35 lines
612 B
JavaScript
const expect = require('expect');
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const {chainAsync} = require('./_30s.js');
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test('chainAsync is a Function', () => {
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expect(chainAsync).toBeInstanceOf(Function);
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});
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let incrementer = 0
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test('Calls all functions in an array', () => {
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chainAsync([
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next => {
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incrementer += 1
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next();
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},
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next => {
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incrementer += 1
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next();
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},
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next => {
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expect(incrementer).toEqual(2);
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}
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]);
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});
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test('Last function does not receive "next" argument', () => {
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chainAsync([
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next => {
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next();
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},
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next => {
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expect(next).toBe(null);
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}
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]);
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})
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