feat: open-source 小浣熊阅读 for iOS

Tests/LegadoCoreTests/ReplaceRuleRepositoryTests.swift

@@ -0,0 +1,43 @@
+import Foundation
+import Testing
+@testable import LegadoCore
+
+struct ReplaceRuleRepositoryTests {
+    @Test func decodesOrderFieldAndDefaults() throws {
+        let data = Data(#"{"id":9,"name":"广告","pattern":"ad","replacement":"","order":12}"#.utf8)
+        let rule = try #require(ReplaceRuleImporter().decode(data).first)
+
+        #expect(rule.id == 9)
+        #expect(rule.sortOrder == 12)
+        #expect(rule.scopeContent)
+        #expect(rule.isEnabled)
+        #expect(rule.isRegex)
+        #expect(rule.timeoutMillisecond == 3_000)
+    }
+
+    @Test func mergesByIdentifierAndSorts() {
+        var old = ReplaceRule(id: 1, name: "旧", pattern: "old")
+        old.sortOrder = 10
+        var replacement = ReplaceRule(id: 1, name: "新", pattern: "new")
+        replacement.sortOrder = 3
+        var first = ReplaceRule(id: 2, name: "先", pattern: "first")
+        first.sortOrder = 1
+
+        let merged = ReplaceRuleImporter().merge([replacement, first], into: [old])
+
+        #expect(merged.map(\.id) == [2, 1])
+        #expect(merged.last?.name == "新")
+    }
+
+    @Test func persistsRulesAtomically() async throws {
+        let directory = FileManager.default.temporaryDirectory.appending(path: UUID().uuidString, directoryHint: .isDirectory)
+        defer { try? FileManager.default.removeItem(at: directory) }
+        let repository = FileReplaceRuleRepository(fileURL: directory.appending(path: "rules.json"))
+        let rule = ReplaceRule(id: 3, name: "空行", pattern: "\\n{3,}", replacement: "\n\n")
+
+        try await repository.save([rule])
+        let restored = try await repository.load()
+
+        #expect(restored == [rule])
+    }
+}