13 lines
293 B
JavaScript
13 lines
293 B
JavaScript
const expect = require('expect');
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const tail = require('./tail.js');
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test('tail is a Function', () => {
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expect(tail).toBeInstanceOf(Function);
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});
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test('Returns tail', () => {
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expect(tail([1, 2, 3])).toEqual([2, 3]);
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});
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test('Returns tail', () => {
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expect(tail([1])).toEqual([1]);
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});
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