|
| 1 | +'use strict'; |
| 2 | + |
| 3 | +const assert = require('assert'); |
| 4 | +const yaml = require('../..'); |
| 5 | + |
| 6 | + |
| 7 | +describe('replacer', function () { |
| 8 | + let undef = new yaml.Type('!undefined', { |
| 9 | + kind: 'scalar', |
| 10 | + resolve: () => true, |
| 11 | + construct: () => {}, |
| 12 | + predicate: object => typeof object === 'undefined', |
| 13 | + represent: () => '' |
| 14 | + }); |
| 15 | + |
| 16 | + let undef_schema = yaml.DEFAULT_SCHEMA.extend(undef); |
| 17 | + |
| 18 | + |
| 19 | + it('should be called on the root of the document', function () { |
| 20 | + let called = 0; |
| 21 | + |
| 22 | + let result = yaml.dump(42, { |
| 23 | + replacer(key, value) { |
| 24 | + called++; |
| 25 | + assert.deepStrictEqual(this, { '': 42 }); |
| 26 | + assert.strictEqual(key, ''); |
| 27 | + assert.strictEqual(value, 42); |
| 28 | + return 123; |
| 29 | + } |
| 30 | + }); |
| 31 | + assert.strictEqual(result, '123\n'); |
| 32 | + assert.strictEqual(called, 1); |
| 33 | + |
| 34 | + assert.strictEqual(yaml.dump(42, { |
| 35 | + replacer(/* key, value */) {} |
| 36 | + }), ''); |
| 37 | + |
| 38 | + assert.strictEqual(yaml.dump(42, { |
| 39 | + replacer(/* key, value */) { return 'foo'; } |
| 40 | + }), 'foo\n'); |
| 41 | + }); |
| 42 | + |
| 43 | + |
| 44 | + it('should be called in collections (block)', function () { |
| 45 | + let called = 0; |
| 46 | + |
| 47 | + let result = yaml.dump([ 42 ], { |
| 48 | + replacer(key, value) { |
| 49 | + called++; |
| 50 | + if (key === '' && called === 1) return value; |
| 51 | + assert.deepStrictEqual(this, [ 42 ]); |
| 52 | + assert.strictEqual(key, '0'); |
| 53 | + assert.strictEqual(value, 42); |
| 54 | + return 123; |
| 55 | + }, |
| 56 | + flowLevel: -1 |
| 57 | + }); |
| 58 | + assert.strictEqual(result, '- 123\n'); |
| 59 | + assert.strictEqual(called, 2); |
| 60 | + }); |
| 61 | + |
| 62 | + |
| 63 | + it('should be called in collections (flow)', function () { |
| 64 | + let called = 0; |
| 65 | + |
| 66 | + let result = yaml.dump([ 42 ], { |
| 67 | + replacer(key, value) { |
| 68 | + called++; |
| 69 | + if (key === '' && called === 1) return value; |
| 70 | + assert.deepStrictEqual(this, [ 42 ]); |
| 71 | + assert.strictEqual(key, '0'); |
| 72 | + assert.strictEqual(value, 42); |
| 73 | + return 123; |
| 74 | + }, |
| 75 | + flowLevel: 0 |
| 76 | + }); |
| 77 | + assert.strictEqual(result, '[123]\n'); |
| 78 | + assert.strictEqual(called, 2); |
| 79 | + }); |
| 80 | + |
| 81 | + |
| 82 | + it('should be called in mappings (block)', function () { |
| 83 | + let called = 0; |
| 84 | + |
| 85 | + let result = yaml.dump({ a: 42 }, { |
| 86 | + replacer(key, value) { |
| 87 | + called++; |
| 88 | + if (key === '' && called === 1) return value; |
| 89 | + assert.deepStrictEqual(this, { a: 42 }); |
| 90 | + assert.strictEqual(key, 'a'); |
| 91 | + assert.strictEqual(value, 42); |
| 92 | + return 123; |
| 93 | + }, |
| 94 | + flowLevel: -1 |
| 95 | + }); |
| 96 | + assert.strictEqual(result, 'a: 123\n'); |
| 97 | + assert.strictEqual(called, 2); |
| 98 | + }); |
| 99 | + |
| 100 | + |
| 101 | + it('should be called in mappings (flow)', function () { |
| 102 | + let called = 0; |
| 103 | + |
| 104 | + let result = yaml.dump({ a: 42 }, { |
| 105 | + replacer(key, value) { |
| 106 | + called++; |
| 107 | + if (key === '' && called === 1) return value; |
| 108 | + assert.deepStrictEqual(this, { a: 42 }); |
| 109 | + assert.strictEqual(key, 'a'); |
| 110 | + assert.strictEqual(value, 42); |
| 111 | + return 123; |
| 112 | + }, |
| 113 | + flowLevel: 0 |
| 114 | + }); |
| 115 | + assert.strictEqual(result, '{a: 123}\n'); |
| 116 | + assert.strictEqual(called, 2); |
| 117 | + }); |
| 118 | + |
| 119 | + |
| 120 | + it('undefined removes element from a mapping', function () { |
| 121 | + let str, result; |
| 122 | + |
| 123 | + str = yaml.dump({ a: 1, b: 2, c: 3 }, { |
| 124 | + replacer(key, value) { |
| 125 | + if (key === 'b') return undefined; |
| 126 | + return value; |
| 127 | + } |
| 128 | + }); |
| 129 | + result = yaml.load(str); |
| 130 | + assert.deepStrictEqual(result, { a: 1, c: 3 }); |
| 131 | + |
| 132 | + str = yaml.dump({ a: 1, b: 2, c: 3 }, { |
| 133 | + replacer(key, value) { |
| 134 | + if (key === 'b') return undefined; |
| 135 | + return value; |
| 136 | + }, |
| 137 | + schema: undef_schema |
| 138 | + }); |
| 139 | + result = yaml.load(str, { schema: undef_schema }); |
| 140 | + assert.deepStrictEqual(result, { a: 1, b: undefined, c: 3 }); |
| 141 | + }); |
| 142 | + |
| 143 | + |
| 144 | + it('undefined replaces element in an array with null', function () { |
| 145 | + let str, result; |
| 146 | + |
| 147 | + str = yaml.dump([ 1, 2, 3 ], { |
| 148 | + replacer(key, value) { |
| 149 | + if (key === '1') return undefined; |
| 150 | + return value; |
| 151 | + } |
| 152 | + }); |
| 153 | + result = yaml.load(str); |
| 154 | + assert.deepStrictEqual(result, [ 1, null, 3 ]); |
| 155 | + |
| 156 | + str = yaml.dump([ 1, 2, 3 ], { |
| 157 | + replacer(key, value) { |
| 158 | + if (key === '1') return undefined; |
| 159 | + return value; |
| 160 | + }, |
| 161 | + schema: undef_schema |
| 162 | + }); |
| 163 | + result = yaml.load(str, { schema: undef_schema }); |
| 164 | + assert.deepStrictEqual(result, [ 1, undefined, 3 ]); |
| 165 | + }); |
| 166 | + |
| 167 | + |
| 168 | + it('should recursively call replacer', function () { |
| 169 | + let count = 0; |
| 170 | + |
| 171 | + let result = yaml.dump(42, { |
| 172 | + replacer(key, value) { |
| 173 | + return count++ > 3 ? value : { ['lvl' + count]: value }; |
| 174 | + } |
| 175 | + }); |
| 176 | + assert.strictEqual(result, ` |
| 177 | +lvl1: |
| 178 | + lvl2: |
| 179 | + lvl3: |
| 180 | + lvl4: 42 |
| 181 | +`.replace(/^\n/, '')); |
| 182 | + }); |
| 183 | +}); |
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