chore: init from code-review-graph-main snapshot (v2.3.7)

tests/fixtures/sample.swift

@@ -0,0 +1,78 @@
+import Foundation
+
+protocol UserRepository {
+    func findById(_ id: Int) -> User?
+    func save(_ user: User)
+}
+
+struct User {
+    let id: Int
+    let name: String
+    let email: String
+}
+
+class InMemoryRepo: UserRepository {
+    private var users: [Int: User] = [:]
+
+    init(seed: [User]) {
+        for user in seed {
+            save(user)
+        }
+    }
+
+    convenience init() {
+        self.init(seed: [])
+    }
+
+    deinit {
+        users.removeAll()
+    }
+
+    subscript(id: Int) -> User? {
+        return findById(id)
+    }
+
+    func findById(_ id: Int) -> User? {
+        return users[id]
+    }
+
+    func save(_ user: User) {
+        users[user.id] = user
+        print("Saved user \(user.id)")
+    }
+}
+
+enum Direction: String {
+    case north
+    case south
+    case east
+    case west
+}
+
+actor DataStore {
+    private var cache: [String: User] = [:]
+
+    func get(_ key: String) -> User? {
+        return cache[key]
+    }
+
+    func set(_ key: String, user: User) {
+        cache[key] = user
+    }
+}
+
+extension InMemoryRepo: CustomStringConvertible {
+    var description: String {
+        return "InMemoryRepo with \(users.count) users"
+    }
+
+    func clear() {
+        users.removeAll()
+    }
+}
+
+func createUser(repo: UserRepository, name: String, email: String) -> User {
+    let user = User(id: 1, name: name, email: email)
+    repo.save(user)
+    return user
+}