unit tests

Implementation/PeeredTests/NotesStorageTests.swift

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+import Foundation
+import Testing
+
+@testable import Peered
+
+@Suite
+struct NotesStorageTests {
+  private func makeStorage(root: URL = URL(filePath: "/test")) -> (
+    NotesStorage, InMemoryStorageProvider
+  ) {
+    let provider = InMemoryStorageProvider()
+    let storage = NotesStorage(storageProvider: provider, rootDirectory: root)
+    return (storage, provider)
+  }
+
+  @Test
+  func loadNotesReturnsEmptyArrayWhenNoFiles() {
+    let (storage, _) = makeStorage()
+    let notes = storage.loadNotes()
+    #expect(notes.isEmpty)
+  }
+
+  @Test
+  func createNoteCreatesFile() {
+    let root = URL(filePath: "/test")
+    let (storage, provider) = makeStorage(root: root)
+
+    storage.createNote(name: "My note")
+
+    #expect(!provider.files.isEmpty)
+  }
+
+  @Test
+  func loadNotesReturnCreatedNote() {
+    let root = URL(filePath: "/test")
+    let (storage, provider) = makeStorage(root: root)
+
+    let filePath = root.appendingPathComponent("Note").path
+    provider.createFile(atPath: filePath, contents: Data(), attributes: nil)
+
+    let notes = storage.loadNotes()
+
+    #expect(notes.count == 1)
+    #expect(notes.first?.name == "Note")
+  }
+
+  @Test
+  func createNoteDeduplicatesNames() {
+    let root = URL(filePath: "/test")
+    let (storage, provider) = makeStorage(root: root)
+
+    let existingPath = root.appendingPathComponent("Note").path
+    provider.createFile(atPath: existingPath, contents: Data(), attributes: nil)
+
+    storage.createNote(name: "Note")
+
+    #expect(provider.files.count == 2)
+
+    let paths = provider.files.keys
+    #expect(paths.contains(where: { $0.contains("Note 1") }))
+  }
+
+  @Test
+  func createNoteTwiceCreatesTwoFiles() {
+    let root = URL(filePath: "/test")
+    let (storage, _) = makeStorage(root: root)
+
+    storage.createNote(name: "Note")
+    storage.createNote(name: "Note")
+
+    let notes = storage.loadNotes()
+    #expect(notes.count == 2)
+  }
+}