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
+  }
+}

Implementation/PeeredTests/NoteContentCodableTests.swift

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+import Foundation
+import Testing
+
+@testable import Peered
+
+@Suite
+struct NoteContentCodableTests {
+  @Test("encode → decode")
+  func coding() throws {
+    let original = NoteInvitation.NoteContent(
+      title: "My note", noteSnapshot: "Note Sample Snapshot")
+    let data = try JSONEncoder().encode(original)
+    let decoded = try JSONDecoder().decode(NoteInvitation.NoteContent.self, from: data)
+
+    #expect(decoded.title == original.title)
+    #expect(decoded.noteSnapshot == original.noteSnapshot)
+  }
+
+  @Test
+  func containsExpectedKeys() throws {
+    let content = NoteInvitation.NoteContent(title: "Titlee", noteSnapshot: "Snapshott")
+    let data = try JSONEncoder().encode(content)
+    let json = try #require(try? JSONSerialization.jsonObject(with: data) as? [String: String])
+
+    #expect(json["title"] == "Titlee")
+    #expect(json["noteSnapshot"] == "Snapshott")
+  }
+}

Implementation/PeeredTests/NoteInvitationTests.swift

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+import MultipeerConnectivity
+import Testing
+
+@testable import Peered
+
+extension NoteInvitation {
+  fileprivate init(handler: @escaping (Bool) -> Void) {
+    self.init(
+      invitatorID: .init(
+        displayName: "host"
+      ),
+      note: .init(title: "Shared note", noteSnapshot: "Snapshot"),
+      invitationHandler: handler
+    )
+  }
+}
+
+@Suite
+struct NoteInvitationTests {
+  @Test
+  func acceptCallsHandlerWithTrue() {
+    var received: Bool? = nil
+    var invitation = NoteInvitation { received = $0 }
+
+    invitation.accept()
+
+    #expect(received == true)
+  }
+
+  @Test
+  func declineCallsHandlerWithFalse() {
+    var received: Bool? = nil
+    var invitation = NoteInvitation { received = $0 }
+
+    invitation.decline()
+
+    #expect(received == false)
+  }
+
+  @Test
+  func acceptIsIdempotent() {
+    var callCount = 0
+    var invitation = NoteInvitation { _ in callCount += 1 }
+
+    invitation.accept()
+    invitation.accept()
+
+    #expect(callCount == 1)
+  }
+
+  @Test
+  func declineIsIdempotent() {
+    var callCount = 0
+    var invitation = NoteInvitation { _ in callCount += 1 }
+
+    invitation.decline()
+    invitation.decline()
+
+    #expect(callCount == 1)
+  }
+
+  @Test
+  func declineAfterAcceptIsNoOp() {
+    var callCount = 0
+    var invitation = NoteInvitation { _ in callCount += 1 }
+
+    invitation.accept()
+    invitation.decline()
+
+    #expect(callCount == 1)
+  }
+
+  @Test
+  func noteNameReturnsTitle() {
+    let invitation = NoteInvitation { _ in }
+    #expect(invitation.noteName == "Shared note")
+  }
+
+  @Test
+  func idIsInvitatorPeerID() {
+    let peerID = MCPeerID(displayName: "host")
+    let invitation = NoteInvitation(
+      invitatorID: peerID,
+      note: .init(title: "T", noteSnapshot: "S")
+    )
+    #expect(invitation.id == peerID)
+  }
+}

Implementation/PeeredTests/NoteMessageCodableTests.swift

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+import Foundation
+import Testing
+
+@testable import Peered
+
+@Suite
+struct NoteMessageCodableTests {
+  @Test
+  func encodesToJSON() throws {
+    let message = NoteMessage(senderID: "host", content: "Content")
+    let data = try JSONEncoder().encode(message)
+    let json = try #require(try? JSONSerialization.jsonObject(with: data) as? [String: String])
+
+    #expect(json["senderID"] == "host")
+    #expect(json["content"] == "Content")
+  }
+
+  @Test
+  func decodesFromJSON() throws {
+    let json = #"{"senderID":"host","content":"contentt"}"#
+    let data = try #require(json.data(using: .utf8))
+    let message = try JSONDecoder().decode(NoteMessage.self, from: data)
+
+    #expect(message.senderID == "host")
+    #expect(message.content == "contentt")
+  }
+
+  @Test("encode → decode")
+  func coding() throws {
+    let original = NoteMessage(senderID: "host", content: "coding test")
+    let data = try JSONEncoder().encode(original)
+    let decoded = try JSONDecoder().decode(NoteMessage.self, from: data)
+
+    #expect(decoded.senderID == original.senderID)
+    #expect(decoded.content == original.content)
+  }
+}

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)
+  }
+}