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| 1 | +// |
| 2 | +// WebViewLocalStateStorageTests.swift |
| 3 | +// MindboxTests |
| 4 | +// |
| 5 | +// Created by Sergei Semko on 3/11/26. |
| 6 | +// Copyright © 2026 Mindbox. All rights reserved. |
| 7 | +// |
| 8 | + |
| 9 | +import Testing |
| 10 | +@testable import Mindbox |
| 11 | + |
| 12 | +@Suite("WebViewLocalStateStorage", .tags(.webView)) |
| 13 | +struct WebViewLocalStateStorageTests { |
| 14 | + |
| 15 | + private let testSuiteName = "cloud.Mindbox.test.webview.localState" |
| 16 | + private let keyPrefix = Constants.WebViewLocalState.keyPrefix |
| 17 | + |
| 18 | + private func makeSUT() -> (sut: WebViewLocalStateStorage, defaults: UserDefaults, persistence: MockPersistenceStorage) { |
| 19 | + let persistence = MockPersistenceStorage() |
| 20 | + let defaults = UserDefaults(suiteName: testSuiteName)! |
| 21 | + defaults.removePersistentDomain(forName: testSuiteName) |
| 22 | + let sut = WebViewLocalStateStorage(dataDefaults: defaults, persistenceStorage: persistence) |
| 23 | + return (sut, defaults, persistence) |
| 24 | + } |
| 25 | + |
| 26 | + // MARK: - get |
| 27 | + |
| 28 | + @Test("get returns default version and empty data when storage is empty") |
| 29 | + func getEmptyStorage() { |
| 30 | + let (sut, _, _) = makeSUT() |
| 31 | + |
| 32 | + let state = sut.get(keys: []) |
| 33 | + |
| 34 | + #expect(state.version == Constants.WebViewLocalState.defaultVersion) |
| 35 | + #expect(state.data.isEmpty) |
| 36 | + } |
| 37 | + |
| 38 | + @Test("get returns all stored keys when keys array is empty") |
| 39 | + func getAllKeys() { |
| 40 | + let (sut, defaults, _) = makeSUT() |
| 41 | + defaults.set("value1", forKey: "\(keyPrefix)key1") |
| 42 | + defaults.set("value2", forKey: "\(keyPrefix)key2") |
| 43 | + |
| 44 | + let state = sut.get(keys: []) |
| 45 | + |
| 46 | + #expect(state.data.count == 2) |
| 47 | + #expect(state.data["key1"] == "value1") |
| 48 | + #expect(state.data["key2"] == "value2") |
| 49 | + } |
| 50 | + |
| 51 | + @Test("get returns only requested keys") |
| 52 | + func getSpecificKeys() { |
| 53 | + let (sut, defaults, _) = makeSUT() |
| 54 | + defaults.set("value1", forKey: "\(keyPrefix)key1") |
| 55 | + defaults.set("value2", forKey: "\(keyPrefix)key2") |
| 56 | + defaults.set("value3", forKey: "\(keyPrefix)key3") |
| 57 | + |
| 58 | + let state = sut.get(keys: ["key1", "key3"]) |
| 59 | + |
| 60 | + #expect(state.data.count == 2) |
| 61 | + #expect(state.data["key1"] == "value1") |
| 62 | + #expect(state.data["key3"] == "value3") |
| 63 | + } |
| 64 | + |
| 65 | + @Test("get omits missing keys from data") |
| 66 | + func getMissingKeys() { |
| 67 | + let (sut, defaults, _) = makeSUT() |
| 68 | + defaults.set("value1", forKey: "\(keyPrefix)key1") |
| 69 | + |
| 70 | + let state = sut.get(keys: ["key1", "missing"]) |
| 71 | + |
| 72 | + #expect(state.data.count == 1) |
| 73 | + #expect(state.data["key1"] == "value1") |
| 74 | + #expect(state.data["missing"] == nil) |
| 75 | + } |
| 76 | + |
| 77 | + @Test("get returns current version from persistence") |
| 78 | + func getCurrentVersion() { |
| 79 | + let (sut, _, persistence) = makeSUT() |
| 80 | + persistence.webViewLocalStateVersion = 5 |
| 81 | + |
| 82 | + let state = sut.get(keys: []) |
| 83 | + |
| 84 | + #expect(state.version == 5) |
| 85 | + } |
| 86 | + |
| 87 | + @Test("get returns default version when persistence version is nil") |
| 88 | + func getDefaultVersion() { |
| 89 | + let (sut, _, persistence) = makeSUT() |
| 90 | + persistence.webViewLocalStateVersion = nil |
| 91 | + |
| 92 | + let state = sut.get(keys: []) |
| 93 | + |
| 94 | + #expect(state.version == Constants.WebViewLocalState.defaultVersion) |
| 95 | + } |
| 96 | + |
| 97 | + // MARK: - set |
| 98 | + |
| 99 | + @Test("set stores values in UserDefaults") |
| 100 | + func setStoresValues() { |
| 101 | + let (sut, defaults, _) = makeSUT() |
| 102 | + |
| 103 | + _ = sut.set(data: ["key1": "value1", "key2": "value2"]) |
| 104 | + |
| 105 | + #expect(defaults.string(forKey: "\(keyPrefix)key1") == "value1") |
| 106 | + #expect(defaults.string(forKey: "\(keyPrefix)key2") == "value2") |
| 107 | + } |
| 108 | + |
| 109 | + @Test("set removes key when value is nil") |
| 110 | + func setRemovesNilKey() { |
| 111 | + let (sut, defaults, _) = makeSUT() |
| 112 | + defaults.set("value1", forKey: "\(keyPrefix)key1") |
| 113 | + |
| 114 | + _ = sut.set(data: ["key1": nil]) |
| 115 | + |
| 116 | + #expect(defaults.string(forKey: "\(keyPrefix)key1") == nil) |
| 117 | + } |
| 118 | + |
| 119 | + @Test("set updates existing values") |
| 120 | + func setUpdatesValues() { |
| 121 | + let (sut, defaults, _) = makeSUT() |
| 122 | + defaults.set("old", forKey: "\(keyPrefix)key1") |
| 123 | + |
| 124 | + let state = sut.set(data: ["key1": "new"]) |
| 125 | + |
| 126 | + #expect(defaults.string(forKey: "\(keyPrefix)key1") == "new") |
| 127 | + #expect(state.data["key1"] == "new") |
| 128 | + } |
| 129 | + |
| 130 | + @Test("set returns only affected keys") |
| 131 | + func setReturnsAffectedKeys() { |
| 132 | + let (sut, defaults, _) = makeSUT() |
| 133 | + defaults.set("existing", forKey: "\(keyPrefix)existing") |
| 134 | + |
| 135 | + let state = sut.set(data: ["key1": "value1"]) |
| 136 | + |
| 137 | + #expect(state.data.count == 1) |
| 138 | + #expect(state.data["key1"] == "value1") |
| 139 | + #expect(state.data["existing"] == nil) |
| 140 | + } |
| 141 | + |
| 142 | + @Test("set does not change version") |
| 143 | + func setPreservesVersion() { |
| 144 | + let (sut, _, persistence) = makeSUT() |
| 145 | + persistence.webViewLocalStateVersion = 3 |
| 146 | + |
| 147 | + let state = sut.set(data: ["key1": "value1"]) |
| 148 | + |
| 149 | + #expect(state.version == 3) |
| 150 | + #expect(persistence.webViewLocalStateVersion == 3) |
| 151 | + } |
| 152 | + |
| 153 | + @Test("set stores each key as separate UserDefaults entry") |
| 154 | + func setSeparateEntries() { |
| 155 | + let (sut, defaults, _) = makeSUT() |
| 156 | + |
| 157 | + _ = sut.set(data: ["firstKey": "firstValue", "secondKey": "secondValue"]) |
| 158 | + |
| 159 | + #expect(defaults.string(forKey: "\(keyPrefix)firstKey") == "firstValue") |
| 160 | + #expect(defaults.string(forKey: "\(keyPrefix)secondKey") == "secondValue") |
| 161 | + } |
| 162 | + |
| 163 | + // MARK: - initialize |
| 164 | + |
| 165 | + @Test("initialize stores version in PersistenceStorage") |
| 166 | + func initStoresVersion() { |
| 167 | + let (sut, _, persistence) = makeSUT() |
| 168 | + |
| 169 | + _ = sut.initialize(version: 7, data: ["key": "value"]) |
| 170 | + |
| 171 | + #expect(persistence.webViewLocalStateVersion == 7) |
| 172 | + } |
| 173 | + |
| 174 | + @Test("initialize stores data and returns it") |
| 175 | + func initStoresAndReturnsData() throws { |
| 176 | + let (sut, defaults, _) = makeSUT() |
| 177 | + |
| 178 | + let state = try #require(sut.initialize(version: 2, data: ["key1": "value1", "key2": "value2"])) |
| 179 | + |
| 180 | + #expect(state.version == 2) |
| 181 | + #expect(state.data["key1"] == "value1") |
| 182 | + #expect(state.data["key2"] == "value2") |
| 183 | + #expect(defaults.string(forKey: "\(keyPrefix)key1") == "value1") |
| 184 | + #expect(defaults.string(forKey: "\(keyPrefix)key2") == "value2") |
| 185 | + } |
| 186 | + |
| 187 | + @Test("initialize rejects zero version") |
| 188 | + func initRejectsZero() { |
| 189 | + let (sut, _, _) = makeSUT() |
| 190 | + |
| 191 | + #expect(sut.initialize(version: 0, data: ["key": "value"]) == nil) |
| 192 | + } |
| 193 | + |
| 194 | + @Test("initialize rejects negative version") |
| 195 | + func initRejectsNegative() { |
| 196 | + let (sut, _, _) = makeSUT() |
| 197 | + |
| 198 | + #expect(sut.initialize(version: -1, data: ["key": "value"]) == nil) |
| 199 | + } |
| 200 | + |
| 201 | + @Test("initialize removes keys with nil values") |
| 202 | + func initRemovesNilKeys() { |
| 203 | + let (sut, defaults, _) = makeSUT() |
| 204 | + defaults.set("value1", forKey: "\(keyPrefix)key1") |
| 205 | + |
| 206 | + let state = sut.initialize(version: 2, data: ["key1": nil]) |
| 207 | + |
| 208 | + #expect(state != nil) |
| 209 | + #expect(defaults.string(forKey: "\(keyPrefix)key1") == nil) |
| 210 | + } |
| 211 | + |
| 212 | + @Test("initialize merges with existing data") |
| 213 | + func initMergesData() { |
| 214 | + let (sut, defaults, _) = makeSUT() |
| 215 | + defaults.set("existing", forKey: "\(keyPrefix)old") |
| 216 | + |
| 217 | + let state = sut.initialize(version: 3, data: ["new": "value"]) |
| 218 | + |
| 219 | + #expect(state != nil) |
| 220 | + #expect(defaults.string(forKey: "\(keyPrefix)old") == "existing") |
| 221 | + #expect(defaults.string(forKey: "\(keyPrefix)new") == "value") |
| 222 | + } |
| 223 | + |
| 224 | + @Test("initialize does not store version on rejection") |
| 225 | + func initPreservesVersionOnReject() { |
| 226 | + let (sut, _, persistence) = makeSUT() |
| 227 | + persistence.webViewLocalStateVersion = 5 |
| 228 | + |
| 229 | + _ = sut.initialize(version: 0, data: ["key": "value"]) |
| 230 | + |
| 231 | + #expect(persistence.webViewLocalStateVersion == 5) |
| 232 | + } |
| 233 | + |
| 234 | + // MARK: - Integration |
| 235 | + |
| 236 | + @Test("full flow: init → set → get") |
| 237 | + func fullFlow() throws { |
| 238 | + let (sut, _, _) = makeSUT() |
| 239 | + |
| 240 | + let initState = try #require(sut.initialize(version: 2, data: ["key1": "value1", "key2": "value2"])) |
| 241 | + #expect(initState.version == 2) |
| 242 | + |
| 243 | + let setState = sut.set(data: ["key1": "updated", "key2": nil, "key3": "value3"]) |
| 244 | + #expect(setState.version == 2) |
| 245 | + |
| 246 | + let getState = sut.get(keys: []) |
| 247 | + #expect(getState.version == 2) |
| 248 | + #expect(getState.data["key1"] == "updated") |
| 249 | + #expect(getState.data["key2"] == nil) |
| 250 | + #expect(getState.data["key3"] == "value3") |
| 251 | + } |
| 252 | + |
| 253 | + @Test("get after set with null returns empty for deleted key") |
| 254 | + func setNullThenGet() { |
| 255 | + let (sut, _, _) = makeSUT() |
| 256 | + |
| 257 | + _ = sut.set(data: ["key1": "value1"]) |
| 258 | + _ = sut.set(data: ["key1": nil]) |
| 259 | + |
| 260 | + let state = sut.get(keys: ["key1"]) |
| 261 | + #expect(state.data.isEmpty) |
| 262 | + } |
| 263 | + |
| 264 | + @Test("prefix isolation: non-prefixed keys and Apple system keys are filtered out") |
| 265 | + func prefixIsolation() { |
| 266 | + let (sut, defaults, _) = makeSUT() |
| 267 | + defaults.set("foreign", forKey: "foreignKey") |
| 268 | + defaults.set("value", forKey: "\(keyPrefix)myKey") |
| 269 | + |
| 270 | + let state = sut.get(keys: []) |
| 271 | + |
| 272 | + #expect(state.data.count == 1) |
| 273 | + #expect(state.data["myKey"] == "value") |
| 274 | + #expect(state.data["foreignKey"] == nil) |
| 275 | + #expect(state.data["AKLastLocale"] == nil) |
| 276 | + #expect(state.data["AppleLocale"] == nil) |
| 277 | + #expect(state.data["NSInterfaceStyle"] == nil) |
| 278 | + } |
| 279 | +} |
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