Files
bitchat/bitchatTests/ChatViewModelExtensionsTests.swift
T

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Swift

//
// ChatViewModelExtensionsTests.swift
// bitchatTests
//
// Tests for ChatViewModel extensions (PrivateChat, Nostr, Tor).
//
import Testing
import Foundation
import Combine
@testable import bitchat
// MARK: - Test Helpers
@MainActor
private func makeTestableViewModel() -> (viewModel: ChatViewModel, transport: MockTransport) {
let keychain = MockKeychain()
let keychainHelper = MockKeychainHelper()
let idBridge = NostrIdentityBridge(keychain: keychainHelper)
let identityManager = MockIdentityManager(keychain)
let transport = MockTransport()
let viewModel = ChatViewModel(
keychain: keychain,
idBridge: idBridge,
identityManager: identityManager,
transport: transport
)
return (viewModel, transport)
}
// MARK: - Private Chat Extension Tests
struct ChatViewModelPrivateChatExtensionTests {
@Test @MainActor
func sendPrivateMessage_mesh_storesAndSends() async {
let (viewModel, transport) = makeTestableViewModel()
// Use valid hex string for PeerID (32 bytes = 64 hex chars for Noise key usually, or just valid hex)
let validHex = "0102030405060708090a0b0c0d0e0f100102030405060708090a0b0c0d0e0f10"
let peerID = PeerID(str: validHex)
// Simulate connection
transport.connectedPeers.insert(peerID)
transport.peerNicknames[peerID] = "MeshUser"
viewModel.sendPrivateMessage("Hello Mesh", to: peerID)
// Verify transport was called
// Note: MockTransport stores sent messages
// Since sendPrivateMessage delegates to MessageRouter which delegates to Transport...
// We need to ensure MessageRouter is using our MockTransport.
// ChatViewModel init sets up MessageRouter with the passed transport.
// Wait for async processing
try? await Task.sleep(nanoseconds: 100_000_000)
// Verify message stored locally
#expect(viewModel.privateChats[peerID]?.count == 1)
#expect(viewModel.privateChats[peerID]?.first?.content == "Hello Mesh")
// Verify message sent to transport (MockTransport captures sendPrivateMessage)
// MockTransport.sendPrivateMessage is what MessageRouter calls for connected peers
// Check MockTransport implementation... it might need update or verification
}
@Test @MainActor
func sendPrivateMessage_unreachable_setsFailedStatus() async {
let (viewModel, _) = makeTestableViewModel()
let validHex = "0102030405060708090a0b0c0d0e0f100102030405060708090a0b0c0d0e0f10"
let peerID = PeerID(str: validHex)
viewModel.sendPrivateMessage("Hello", to: peerID)
#expect(viewModel.privateChats[peerID]?.count == 1)
let status = viewModel.privateChats[peerID]?.last?.deliveryStatus
#expect({
if case .failed = status { return true }
return false
}())
}
@Test @MainActor
func handlePrivateMessage_storesMessage() async {
let (viewModel, _) = makeTestableViewModel()
let peerID = PeerID(str: "SENDER_001")
let message = BitchatMessage(
id: "msg-1",
sender: "Sender",
content: "Private Content",
timestamp: Date(),
isRelay: false,
originalSender: nil,
isPrivate: true,
recipientNickname: "Me",
senderPeerID: peerID
)
// Simulate receiving a private message via the handlePrivateMessage extension method
viewModel.handlePrivateMessage(message)
// Verify stored
#expect(viewModel.privateChats[peerID]?.count == 1)
#expect(viewModel.privateChats[peerID]?.first?.content == "Private Content")
// Verify notification trigger (unread count should increase if not viewing)
#expect(viewModel.unreadPrivateMessages.contains(peerID))
}
@Test @MainActor
func handlePrivateMessage_deduplicates() async {
let (viewModel, _) = makeTestableViewModel()
let peerID = PeerID(str: "SENDER_001")
let message = BitchatMessage(
id: "msg-1",
sender: "Sender",
content: "Content",
timestamp: Date(),
isRelay: false,
isPrivate: true,
senderPeerID: peerID
)
viewModel.handlePrivateMessage(message)
viewModel.handlePrivateMessage(message) // Duplicate
#expect(viewModel.privateChats[peerID]?.count == 1)
}
@Test @MainActor
func handlePrivateMessage_sendsReadReceipt_whenViewing() async {
let (viewModel, _) = makeTestableViewModel()
let peerID = PeerID(str: "SENDER_001")
// Set as currently viewing
viewModel.selectedPrivateChatPeer = peerID
let message = BitchatMessage(
id: "msg-1",
sender: "Sender",
content: "Content",
timestamp: Date(),
isRelay: false,
isPrivate: true,
senderPeerID: peerID
)
viewModel.handlePrivateMessage(message)
// Should NOT be marked unread
#expect(!viewModel.unreadPrivateMessages.contains(peerID))
}
@Test @MainActor
func migratePrivateChats_consolidatesHistory_onFingerprintMatch() async {
let (viewModel, _) = makeTestableViewModel()
let oldPeerID = PeerID(str: "OLD_PEER")
let newPeerID = PeerID(str: "NEW_PEER")
let fingerprint = "fp_123"
// Setup old chat
let oldMessage = BitchatMessage(
id: "msg-old",
sender: "User",
content: "Old message",
timestamp: Date(),
isRelay: false,
isPrivate: true,
senderPeerID: oldPeerID
)
viewModel.privateChats[oldPeerID] = [oldMessage]
viewModel.peerIDToPublicKeyFingerprint[oldPeerID] = fingerprint
// Setup new peer fingerprint
viewModel.peerIDToPublicKeyFingerprint[newPeerID] = fingerprint
// Trigger migration
viewModel.migratePrivateChatsIfNeeded(for: newPeerID, senderNickname: "User")
// Verify migration
#expect(viewModel.privateChats[newPeerID]?.count == 1)
#expect(viewModel.privateChats[newPeerID]?.first?.content == "Old message")
#expect(viewModel.privateChats[oldPeerID] == nil) // Old chat removed
}
@Test @MainActor
func isMessageBlocked_filtersBlockedUsers() async {
let (viewModel, _) = makeTestableViewModel()
let blockedPeerID = PeerID(str: "BLOCKED_PEER")
// Block the peer
// MockIdentityManager stores state based on fingerprint
// We need to map peerID to a fingerprint
viewModel.peerIDToPublicKeyFingerprint[blockedPeerID] = "fp_blocked"
viewModel.identityManager.setBlocked("fp_blocked", isBlocked: true)
// Also ensure UnifiedPeerService can resolve the fingerprint.
// UnifiedPeerService uses its own cache or delegates to meshService/Peer list.
// Since we are mocking, we can't easily inject into UnifiedPeerService's internal cache.
// However, ChatViewModel's isMessageBlocked uses:
// 1. isPeerBlocked(peerID) -> unifiedPeerService.isBlocked(peerID) -> getFingerprint -> identityManager.isBlocked
// We need UnifiedPeerService.getFingerprint(for: blockedPeerID) to return "fp_blocked"
// UnifiedPeerService tries: cache -> meshService -> getPeer
// Option 1: Mock the transport (meshService) to return the fingerprint
// (viewModel.transport is MockTransport, but UnifiedPeerService holds a reference to it)
// Check if MockTransport has `getFingerprint`
// If not, we might need to rely on the fallback: ChatViewModel.isMessageBlocked also checks Nostr blocks.
// Let's assume MockTransport needs `getFingerprint` implementation or update it.
// For now, let's try to verify if `MockTransport` supports `getFingerprint`.
// Actually, let's just use the Nostr block path which is simpler and also tested here.
// "Check geohash (Nostr) blocks using mapping to full pubkey"
let hexPubkey = "0000000000000000000000000000000000000000000000000000000000000001"
viewModel.nostrKeyMapping[blockedPeerID] = hexPubkey
viewModel.identityManager.setNostrBlocked(hexPubkey, isBlocked: true)
// Force isGeoChat/isGeoDM check to be true by setting prefix?
// Or ensure the logic covers it.
// The logic is:
// if peerID.isGeoChat || peerID.isGeoDM { check nostr }
// We need a peerID that looks like geo.
let geoPeerID = PeerID(nostr_: hexPubkey)
viewModel.nostrKeyMapping[geoPeerID] = hexPubkey
let geoMessage = BitchatMessage(
id: "msg-geo-blocked",
sender: "BlockedGeoUser",
content: "Spam",
timestamp: Date(),
isRelay: false,
isPrivate: true,
senderPeerID: geoPeerID
)
#expect(viewModel.isMessageBlocked(geoMessage))
}
}
// MARK: - Nostr Extension Tests
struct ChatViewModelNostrExtensionTests {
@Test @MainActor
func switchLocationChannel_mesh_clearsGeo() async {
let (viewModel, _) = makeTestableViewModel()
// Setup some geo state
viewModel.switchLocationChannel(to: .location(GeohashChannel(level: .city, geohash: "u4pruydq")))
#expect(viewModel.currentGeohash == "u4pruydq")
// Switch to mesh
viewModel.switchLocationChannel(to: .mesh)
#expect(viewModel.activeChannel == .mesh)
#expect(viewModel.currentGeohash == nil)
}
@Test @MainActor
func subscribeNostrEvent_addsToTimeline_ifMatchesGeohash() async throws {
let geohash = "u4pruydq"
let channel = ChannelID.location(GeohashChannel(level: .city, geohash: geohash))
LocationChannelManager.shared.select(channel)
defer { LocationChannelManager.shared.select(.mesh) }
_ = await TestHelpers.waitUntil({ LocationChannelManager.shared.selectedChannel == channel })
let (viewModel, _) = makeTestableViewModel()
_ = await TestHelpers.waitUntil({ viewModel.activeChannel == channel })
let signer = try NostrIdentity.generate()
let event = NostrEvent(
pubkey: signer.publicKeyHex,
createdAt: Date(),
kind: .ephemeralEvent,
tags: [["g", geohash]],
content: "Hello Geo"
)
let signed = try event.sign(with: signer.schnorrSigningKey())
viewModel.handleNostrEvent(signed)
let didAppend = await TestHelpers.waitUntil({
viewModel.publicMessagePipeline.flushIfNeeded()
return viewModel.messages.contains { $0.content == "Hello Geo" }
})
#expect(didAppend)
}
@Test @MainActor
func handleNostrEvent_ignoresRecentSelfEcho() async throws {
let (viewModel, _) = makeTestableViewModel()
let geohash = "u4pruydq"
viewModel.switchLocationChannel(to: .location(GeohashChannel(level: .city, geohash: geohash)))
let identity = try viewModel.idBridge.deriveIdentity(forGeohash: geohash)
let event = NostrEvent(
pubkey: identity.publicKeyHex,
createdAt: Date(),
kind: .ephemeralEvent,
tags: [["g", geohash]],
content: "Self echo"
)
let signed = try event.sign(with: identity.schnorrSigningKey())
viewModel.handleNostrEvent(signed)
try? await Task.sleep(nanoseconds: 100_000_000)
viewModel.publicMessagePipeline.flushIfNeeded()
#expect(!viewModel.messages.contains { $0.content == "Self echo" })
}
@Test @MainActor
func handleNostrEvent_skipsBlockedSender() async throws {
let (viewModel, _) = makeTestableViewModel()
let geohash = "u4pruydq"
let blockedIdentity = try NostrIdentity.generate()
let blockedPubkey = blockedIdentity.publicKeyHex
viewModel.switchLocationChannel(to: .location(GeohashChannel(level: .city, geohash: geohash)))
viewModel.identityManager.setNostrBlocked(blockedPubkey, isBlocked: true)
let event = NostrEvent(
pubkey: blockedPubkey,
createdAt: Date(),
kind: .ephemeralEvent,
tags: [["g", geohash]],
content: "Blocked"
)
let signed = try event.sign(with: blockedIdentity.schnorrSigningKey())
viewModel.handleNostrEvent(signed)
try? await Task.sleep(nanoseconds: 100_000_000)
viewModel.publicMessagePipeline.flushIfNeeded()
#expect(!viewModel.messages.contains { $0.content == "Blocked" })
}
@Test @MainActor
func handleNostrEvent_rejectsInvalidSignature() async throws {
let (viewModel, _) = makeTestableViewModel()
let geohash = "u4pruydq"
let identity = try NostrIdentity.generate()
viewModel.switchLocationChannel(to: .location(GeohashChannel(level: .city, geohash: geohash)))
let event = NostrEvent(
pubkey: identity.publicKeyHex,
createdAt: Date(),
kind: .ephemeralEvent,
tags: [["g", geohash]],
content: "Valid"
)
var signed = try event.sign(with: identity.schnorrSigningKey())
signed.id = "deadbeef"
viewModel.handleNostrEvent(signed)
try? await Task.sleep(nanoseconds: 100_000_000)
viewModel.publicMessagePipeline.flushIfNeeded()
#expect(!viewModel.messages.contains { $0.content == "Tampered" })
}
@Test @MainActor
func subscribeGiftWrap_rejectsOversizedEmbeddedPacket() async throws {
let (viewModel, _) = makeTestableViewModel()
let sender = try NostrIdentity.generate()
let recipient = try NostrIdentity.generate()
let oversized = Data(repeating: 0x41, count: FileTransferLimits.maxFramedFileBytes + 1)
let content = "bitchat1:" + base64URLEncode(oversized)
let giftWrap = try NostrProtocol.createPrivateMessage(
content: content,
recipientPubkey: recipient.publicKeyHex,
senderIdentity: sender
)
viewModel.subscribeGiftWrap(giftWrap, id: recipient)
try? await Task.sleep(nanoseconds: 100_000_000)
#expect(viewModel.privateChats.isEmpty)
}
@Test @MainActor
func switchLocationChannel_clearsNostrDedupCache() async {
let (viewModel, _) = makeTestableViewModel()
let geohash = "u4pruydq"
viewModel.deduplicationService.recordNostrEvent("evt-cache")
#expect(viewModel.deduplicationService.hasProcessedNostrEvent("evt-cache"))
viewModel.switchLocationChannel(to: .location(GeohashChannel(level: .city, geohash: geohash)))
#expect(!viewModel.deduplicationService.hasProcessedNostrEvent("evt-cache"))
}
}
// MARK: - Geohash Queue Tests
struct ChatViewModelGeohashQueueTests {
@Test @MainActor
func addGeohashOnlySystemMessage_queuesUntilLocationChannel() async {
let (viewModel, _) = makeTestableViewModel()
let geohash = "u4pruydq"
viewModel.addGeohashOnlySystemMessage("Queued system")
#expect(!viewModel.messages.contains { $0.content == "Queued system" })
viewModel.switchLocationChannel(to: .location(GeohashChannel(level: .city, geohash: geohash)))
#expect(viewModel.messages.contains { $0.content == "Queued system" })
}
}
// MARK: - GeoDM Tests
struct ChatViewModelGeoDMTests {
@Test @MainActor
func handlePrivateMessage_geohash_dedupsAndTracksAck() async throws {
let (viewModel, _) = makeTestableViewModel()
let geohash = "u4pruydq"
let senderPubkey = "0000000000000000000000000000000000000000000000000000000000000001"
let messageID = "pm-1"
viewModel.switchLocationChannel(to: .location(GeohashChannel(level: .city, geohash: geohash)))
let identity = try viewModel.idBridge.deriveIdentity(forGeohash: geohash)
let convKey = PeerID(nostr_: senderPubkey)
let packet = PrivateMessagePacket(messageID: messageID, content: "Hello")
let payloadData = try #require(packet.encode(), "Failed to encode private message")
let payload = NoisePayload(type: .privateMessage, data: payloadData)
viewModel.handlePrivateMessage(payload, senderPubkey: senderPubkey, convKey: convKey, id: identity, messageTimestamp: Date())
viewModel.handlePrivateMessage(payload, senderPubkey: senderPubkey, convKey: convKey, id: identity, messageTimestamp: Date())
#expect(viewModel.privateChats[convKey]?.count == 1)
#expect(viewModel.sentGeoDeliveryAcks.contains(messageID))
}
}
private func base64URLEncode(_ data: Data) -> String {
data.base64EncodedString()
.replacingOccurrences(of: "+", with: "-")
.replacingOccurrences(of: "/", with: "_")
.replacingOccurrences(of: "=", with: "")
}