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| 1 | +import { expect } from 'chai'; |
| 2 | +import { safeToLowerCase, safeTrim } from './string-utils'; |
| 3 | + |
| 4 | +describe('safeToLowerCase', () => { |
| 5 | + describe('returns value lowercase', () => { |
| 6 | + it('when value is a lowercase string', () => { |
| 7 | + expect(safeToLowerCase('string')).to.equal('string'); |
| 8 | + }); |
| 9 | + |
| 10 | + it('when value is an uppercase string', () => { |
| 11 | + expect(safeToLowerCase('STRING')).to.equal('string'); |
| 12 | + }); |
| 13 | + |
| 14 | + it('when value is a mixed case string', () => { |
| 15 | + expect(safeToLowerCase('sTRiNG')).to.equal('string'); |
| 16 | + }); |
| 17 | + }); |
| 18 | + |
| 19 | + describe('returns value unaltered', () => { |
| 20 | + it('when value is a negative number', () => { |
| 21 | + expect(safeToLowerCase(-123)).to.equal(-123); |
| 22 | + }); |
| 23 | + |
| 24 | + it('when value is a zero', () => { |
| 25 | + expect(safeToLowerCase(0)).to.equal(0); |
| 26 | + }); |
| 27 | + |
| 28 | + it('when value is a positive number', () => { |
| 29 | + expect(safeToLowerCase(123)).to.equal(123); |
| 30 | + }); |
| 31 | + |
| 32 | + it('when value is `false`', () => { |
| 33 | + expect(safeToLowerCase(false)).to.equal(false); |
| 34 | + }); |
| 35 | + |
| 36 | + it('when value is `true`', () => { |
| 37 | + expect(safeToLowerCase(true)).to.equal(true); |
| 38 | + }); |
| 39 | + |
| 40 | + it('when value is an empty object', () => { |
| 41 | + expect(safeToLowerCase({})).to.eql({}); |
| 42 | + }); |
| 43 | + |
| 44 | + it('when value is an empty array', () => { |
| 45 | + expect(safeToLowerCase([])).to.eql([]); |
| 46 | + }); |
| 47 | + |
| 48 | + it('when value is a non-empty array of numbers', () => { |
| 49 | + expect(safeToLowerCase([1, 2, 3])).to.eql([1, 2, 3]); |
| 50 | + }); |
| 51 | + |
| 52 | + it('when value is a non-empty array of strings', () => { |
| 53 | + expect(safeToLowerCase(['1', 'string', 'false'])).to.eql(['1', 'string', 'false']); |
| 54 | + }); |
| 55 | + |
| 56 | + it('when value is a function', () => { |
| 57 | + const fn = (a: number, b: number) => a * b; |
| 58 | + expect(safeToLowerCase(fn)).to.equal(fn); |
| 59 | + }); |
| 60 | + }); |
| 61 | +}); |
| 62 | + |
| 63 | +describe('safeTrim', () => { |
| 64 | + describe('returns value trimmed', () => { |
| 65 | + it('when value is a lowercase string', () => { |
| 66 | + expect(safeTrim(' string ')).to.equal('string'); |
| 67 | + }); |
| 68 | + |
| 69 | + it('when value is an uppercase string', () => { |
| 70 | + expect(safeTrim(' STRING ')).to.equal('STRING'); |
| 71 | + }); |
| 72 | + |
| 73 | + it('when value is a mixed case string', () => { |
| 74 | + expect(safeTrim(' sTRiNG ')).to.equal('sTRiNG'); |
| 75 | + }); |
| 76 | + }); |
| 77 | + |
| 78 | + describe('returns value unaltered', () => { |
| 79 | + it('when value is a negative number', () => { |
| 80 | + expect(safeTrim(-123)).to.equal(-123); |
| 81 | + }); |
| 82 | + |
| 83 | + it('when value is a zero', () => { |
| 84 | + expect(safeTrim(0)).to.equal(0); |
| 85 | + }); |
| 86 | + |
| 87 | + it('when value is a positive number', () => { |
| 88 | + expect(safeTrim(123)).to.equal(123); |
| 89 | + }); |
| 90 | + |
| 91 | + it('when value is `false`', () => { |
| 92 | + expect(safeTrim(false)).to.equal(false); |
| 93 | + }); |
| 94 | + |
| 95 | + it('when value is `true`', () => { |
| 96 | + expect(safeTrim(true)).to.equal(true); |
| 97 | + }); |
| 98 | + |
| 99 | + it('when value is an empty object', () => { |
| 100 | + expect(safeTrim({})).to.eql({}); |
| 101 | + }); |
| 102 | + |
| 103 | + it('when value is an empty array', () => { |
| 104 | + expect(safeTrim([])).to.eql([]); |
| 105 | + }); |
| 106 | + |
| 107 | + it('when value is a non-empty array of numbers', () => { |
| 108 | + expect(safeTrim([1, 2, 3])).to.eql([1, 2, 3]); |
| 109 | + }); |
| 110 | + |
| 111 | + it('when value is a non-empty array of strings', () => { |
| 112 | + expect(safeTrim([' 1 ', ' string ', ' false '])).to.eql([' 1 ', ' string ', ' false ']); |
| 113 | + }); |
| 114 | + |
| 115 | + it('when value is a function', () => { |
| 116 | + const fn = (a: number, b: number) => a * b; |
| 117 | + expect(safeTrim(fn)).to.equal(fn); |
| 118 | + }); |
| 119 | + }); |
| 120 | +}); |
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