unit tests

Implementation/PeeredTests/Helpers/InMemoryStorageProvider.swift

@@ -0,0 +1,27 @@
+import Foundation
+
+@testable import Peered
+
+final class InMemoryStorageProvider: StorageProvider {
+  private(set) var files: [String: Data] = [:]
+
+  func contentsOfDirectory(atPath path: String) throws -> [String] {
+    return files.keys.compactMap { filePath -> String? in
+      guard filePath.hasPrefix(path) else { return nil }
+      let remainder = String(filePath.dropFirst(path.count))
+      let stripped = remainder.hasPrefix("/") ? String(remainder.dropFirst()) : remainder
+      guard !stripped.isEmpty, !stripped.contains("/") else { return nil }
+      return stripped
+    }
+  }
+
+  @discardableResult
+  func createFile(
+    atPath path: String,
+    contents data: Data?,
+    attributes attr: [FileAttributeKey: Any]?
+  ) -> Bool {
+    files[path] = data ?? Data()
+    return true
+  }
+}