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| 1 | +/** |
| 2 | + * Copyright 2025, Optimizely |
| 3 | + * |
| 4 | + * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | + * you may not use this file except in compliance with the License. |
| 6 | + * You may obtain a copy of the License at |
| 7 | + * |
| 8 | + * https://www.apache.org/licenses/LICENSE-2.0 |
| 9 | + * |
| 10 | + * Unless required by applicable law or agreed to in writing, software |
| 11 | + * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | + * See the License for the specific language governing permissions and |
| 14 | + * limitations under the License. |
| 15 | + */ |
| 16 | +import { describe, it, vi, expect } from 'vitest'; |
| 17 | + |
| 18 | +import * as conditionTreeEvaluator from '.'; |
| 19 | + |
| 20 | +const conditionA = { |
| 21 | + name: 'browser_type', |
| 22 | + value: 'safari', |
| 23 | + type: 'custom_attribute', |
| 24 | +}; |
| 25 | +const conditionB = { |
| 26 | + name: 'device_model', |
| 27 | + value: 'iphone6', |
| 28 | + type: 'custom_attribute', |
| 29 | +}; |
| 30 | +const conditionC = { |
| 31 | + name: 'location', |
| 32 | + match: 'exact', |
| 33 | + type: 'custom_attribute', |
| 34 | + value: 'CA', |
| 35 | +}; |
| 36 | +describe('evaluate', function() { |
| 37 | + it('should return true for a leaf condition when the leaf condition evaluator returns true', function() { |
| 38 | + expect( |
| 39 | + conditionTreeEvaluator.evaluate(conditionA, function() { |
| 40 | + return true; |
| 41 | + }) |
| 42 | + ).toBe(true); |
| 43 | + }); |
| 44 | + |
| 45 | + it('should return false for a leaf condition when the leaf condition evaluator returns false', function() { |
| 46 | + expect( |
| 47 | + conditionTreeEvaluator.evaluate(conditionA, function() { |
| 48 | + return false; |
| 49 | + }) |
| 50 | + ).toBe(false); |
| 51 | + }); |
| 52 | + |
| 53 | + describe('and evaluation', function() { |
| 54 | + it('should return true when ALL conditions evaluate to true', function() { |
| 55 | + expect( |
| 56 | + conditionTreeEvaluator.evaluate(['and', conditionA, conditionB], function() { |
| 57 | + return true; |
| 58 | + }) |
| 59 | + ).toBe(true); |
| 60 | + }); |
| 61 | + |
| 62 | + it('should return false if one condition evaluates to false', function() { |
| 63 | + const leafEvaluator = vi.fn(); |
| 64 | + leafEvaluator.mockImplementationOnce(() => true).mockImplementationOnce(() => false); |
| 65 | + expect(conditionTreeEvaluator.evaluate(['and', conditionA, conditionB], leafEvaluator)).toBe(false); |
| 66 | + }); |
| 67 | + |
| 68 | + describe('null handling', function() { |
| 69 | + it('should return null when all operands evaluate to null', function() { |
| 70 | + expect( |
| 71 | + conditionTreeEvaluator.evaluate(['and', conditionA, conditionB], function() { |
| 72 | + return null; |
| 73 | + }) |
| 74 | + ).toBeNull(); |
| 75 | + }); |
| 76 | + |
| 77 | + it('should return null when operands evaluate to trues and nulls', function() { |
| 78 | + const leafEvaluator = vi.fn(); |
| 79 | + leafEvaluator.mockImplementationOnce(() => true).mockImplementationOnce(() => null); |
| 80 | + expect(conditionTreeEvaluator.evaluate(['and', conditionA, conditionB], leafEvaluator)).toBeNull(); |
| 81 | + }); |
| 82 | + |
| 83 | + it('should return false when operands evaluate to falses and nulls', function() { |
| 84 | + const leafEvaluator = vi.fn(); |
| 85 | + leafEvaluator.mockImplementationOnce(() => false).mockImplementationOnce(() => null); |
| 86 | + expect(conditionTreeEvaluator.evaluate(['and', conditionA, conditionB], leafEvaluator)).toBe(false); |
| 87 | + |
| 88 | + leafEvaluator.mockReset(); |
| 89 | + leafEvaluator.mockImplementationOnce(() => null).mockImplementationOnce(() => false); |
| 90 | + expect(conditionTreeEvaluator.evaluate(['and', conditionA, conditionB], leafEvaluator)).toBe(false); |
| 91 | + }); |
| 92 | + |
| 93 | + it('should return false when operands evaluate to trues, falses, and nulls', function() { |
| 94 | + const leafEvaluator = vi.fn(); |
| 95 | + leafEvaluator |
| 96 | + .mockImplementationOnce(() => true) |
| 97 | + .mockImplementationOnce(() => false) |
| 98 | + .mockImplementationOnce(() => null); |
| 99 | + expect(conditionTreeEvaluator.evaluate(['and', conditionA, conditionB, conditionC], leafEvaluator)).toBe(false); |
| 100 | + }); |
| 101 | + }); |
| 102 | + }); |
| 103 | + |
| 104 | + describe('or evaluation', function() { |
| 105 | + it('should return true if any condition evaluates to true', function() { |
| 106 | + const leafEvaluator = vi.fn(); |
| 107 | + leafEvaluator.mockImplementationOnce(() => false).mockImplementationOnce(() => true); |
| 108 | + expect(conditionTreeEvaluator.evaluate(['or', conditionA, conditionB], leafEvaluator)).toBe(true); |
| 109 | + }); |
| 110 | + |
| 111 | + it('should return false if all conditions evaluate to false', function() { |
| 112 | + expect( |
| 113 | + conditionTreeEvaluator.evaluate(['or', conditionA, conditionB], function() { |
| 114 | + return false; |
| 115 | + }) |
| 116 | + ).toBe(false); |
| 117 | + }); |
| 118 | + |
| 119 | + describe('null handling', function() { |
| 120 | + it('should return null when all operands evaluate to null', function() { |
| 121 | + expect( |
| 122 | + conditionTreeEvaluator.evaluate(['or', conditionA, conditionB], function() { |
| 123 | + return null; |
| 124 | + }) |
| 125 | + ).toBeNull(); |
| 126 | + }); |
| 127 | + |
| 128 | + it('should return true when operands evaluate to trues and nulls', function() { |
| 129 | + const leafEvaluator = vi.fn(); |
| 130 | + leafEvaluator.mockImplementationOnce(() => true).mockImplementationOnce(() => null); |
| 131 | + expect(conditionTreeEvaluator.evaluate(['or', conditionA, conditionB], leafEvaluator)).toBe(true); |
| 132 | + }); |
| 133 | + |
| 134 | + it('should return null when operands evaluate to falses and nulls', function() { |
| 135 | + const leafEvaluator = vi.fn(); |
| 136 | + leafEvaluator.mockImplementationOnce(() => null).mockImplementationOnce(() => false); |
| 137 | + expect(conditionTreeEvaluator.evaluate(['or', conditionA, conditionB], leafEvaluator)).toBeNull(); |
| 138 | + |
| 139 | + leafEvaluator.mockReset(); |
| 140 | + leafEvaluator.mockImplementationOnce(() => false).mockImplementationOnce(() => null); |
| 141 | + expect(conditionTreeEvaluator.evaluate(['or', conditionA, conditionB], leafEvaluator)).toBeNull(); |
| 142 | + }); |
| 143 | + |
| 144 | + it('should return true when operands evaluate to trues, falses, and nulls', function() { |
| 145 | + const leafEvaluator = vi.fn(); |
| 146 | + leafEvaluator |
| 147 | + .mockImplementationOnce(() => true) |
| 148 | + .mockImplementationOnce(() => null) |
| 149 | + .mockImplementationOnce(() => false); |
| 150 | + expect(conditionTreeEvaluator.evaluate(['or', conditionA, conditionB, conditionC], leafEvaluator)).toBe(true); |
| 151 | + }); |
| 152 | + }); |
| 153 | + }); |
| 154 | + |
| 155 | + describe('not evaluation', function() { |
| 156 | + it('should return true if the condition evaluates to false', function() { |
| 157 | + expect( |
| 158 | + conditionTreeEvaluator.evaluate(['not', conditionA], function() { |
| 159 | + return false; |
| 160 | + }) |
| 161 | + ).toBe(true); |
| 162 | + }); |
| 163 | + |
| 164 | + it('should return false if the condition evaluates to true', function() { |
| 165 | + expect( |
| 166 | + conditionTreeEvaluator.evaluate(['not', conditionB], function() { |
| 167 | + return true; |
| 168 | + }) |
| 169 | + ).toBe(false); |
| 170 | + }); |
| 171 | + |
| 172 | + it('should return the result of negating the first condition, and ignore any additional conditions', function() { |
| 173 | + let result = conditionTreeEvaluator.evaluate(['not', '1', '2', '1'], function(id: string) { |
| 174 | + return id === '1'; |
| 175 | + }); |
| 176 | + expect(result).toBe(false); |
| 177 | + result = conditionTreeEvaluator.evaluate(['not', '1', '2', '1'], function(id: string) { |
| 178 | + return id === '2'; |
| 179 | + }); |
| 180 | + expect(result).toBe(true); |
| 181 | + result = conditionTreeEvaluator.evaluate(['not', '1', '2', '3'], function(id: string) { |
| 182 | + return id === '1' ? null : id === '3'; |
| 183 | + }); |
| 184 | + expect(result).toBeNull(); |
| 185 | + }); |
| 186 | + |
| 187 | + describe('null handling', function() { |
| 188 | + it('should return null when operand evaluates to null', function() { |
| 189 | + expect( |
| 190 | + conditionTreeEvaluator.evaluate(['not', conditionA], function() { |
| 191 | + return null; |
| 192 | + }) |
| 193 | + ).toBeNull(); |
| 194 | + }); |
| 195 | + |
| 196 | + it('should return null when there are no operands', function() { |
| 197 | + expect( |
| 198 | + conditionTreeEvaluator.evaluate(['not'], function() { |
| 199 | + return null; |
| 200 | + }) |
| 201 | + ).toBeNull(); |
| 202 | + }); |
| 203 | + }); |
| 204 | + }); |
| 205 | + |
| 206 | + describe('implicit operator', function() { |
| 207 | + it('should behave like an "or" operator when the first item in the array is not a recognized operator', function() { |
| 208 | + const leafEvaluator = vi.fn(); |
| 209 | + leafEvaluator.mockImplementationOnce(() => true).mockImplementationOnce(() => false); |
| 210 | + expect(conditionTreeEvaluator.evaluate([conditionA, conditionB], leafEvaluator)).toBe(true); |
| 211 | + expect( |
| 212 | + conditionTreeEvaluator.evaluate([conditionA, conditionB], function() { |
| 213 | + return false; |
| 214 | + }) |
| 215 | + ).toBe(false); |
| 216 | + }); |
| 217 | + }); |
| 218 | +}); |
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