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| 1 | +const letters = require('./index'); |
| 2 | + |
| 3 | +describe('Data Structure : Set', () => { |
| 4 | + |
| 5 | + |
| 6 | + it('X Set should be a Class', () => { |
| 7 | + expect(typeof XSet.prototype.constructor).toEqual('function'); |
| 8 | + }); |
| 9 | + |
| 10 | + describe('Creation of Set', () => { |
| 11 | + |
| 12 | + it('Should create a new Set with no elements', () => { |
| 13 | + letters = new XSet(); |
| 14 | + expect(letters === 0); |
| 15 | + }); |
| 16 | + |
| 17 | + it('Should add letter A', () => { |
| 18 | + letters.add('a'); |
| 19 | + expect(letters.has('a'); |
| 20 | + }); |
| 21 | + |
| 22 | + it('Should add letter B', () => { |
| 23 | + letters.add('b'); |
| 24 | + expect(letters.has('b'); |
| 25 | + }); |
| 26 | + |
| 27 | + it('Should add letter C', () => { |
| 28 | + letters.add('c'); |
| 29 | + expect(letters.has('c'); |
| 30 | + }); |
| 31 | + |
| 32 | + it('Should remove letter A', () => { |
| 33 | + letters.remove('a'); |
| 34 | + expect(!letters.has('a'); |
| 35 | + }); |
| 36 | + |
| 37 | + it('Should remove letter B', () => { |
| 38 | + letters.remove('b'); |
| 39 | + expect(!letters.has('b'); |
| 40 | + }); |
| 41 | + |
| 42 | + |
| 43 | + }); |
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