d8f4dbb2aa
This makes negentropy optimizations available to the rest of the app via Subscription Manager. Changelog not needed because this should not have user-facing changes Changelog-None Signed-off-by: Daniel D’Aquino <daniel@daquino.me>
495 lines
25 KiB
Swift
495 lines
25 KiB
Swift
//
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// SubscriptionManagerNegentropyTests.swift
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// damus
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//
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// Created by Daniel D'Aquino on 2026-01-17.
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//
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import XCTest
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import NostrSDK
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import Negentropy
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@testable import damus
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/// Tests for the SubscriptionManager's negentropy streaming mode functionality.
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///
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/// These tests verify that SubscriptionManager correctly handles negentropy-based synchronization
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/// by streaming events from NostrDB first, then efficiently syncing missing events from relays
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/// using the negentropy protocol.
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final class SubscriptionManagerNegentropyTests: XCTestCase {
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// MARK: - Helper Functions
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/// Creates and runs a local relay on the specified port.
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/// - Parameter port: The port number to run the relay on
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/// - Returns: The running LocalRelay instance
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private func setupRelay(port: UInt16) async throws -> LocalRelay {
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let builder = RelayBuilder().port(port: port)
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let relay = LocalRelay(builder: builder)
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try await relay.run()
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print("Relay url: \(await relay.url())")
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return relay
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}
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/// Connects to a relay and waits for the connection to be established.
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/// - Parameters:
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/// - url: The relay URL to connect to
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/// - label: Optional label for logging (e.g., "Relay1", "Relay2")
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/// - Returns: The connected RelayConnection instance
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private func connectToRelay(url: RelayURL, label: String = "") async -> RelayConnection {
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var connectionContinuation: CheckedContinuation<Void, Never>?
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let relayConnection = RelayConnection(url: url, handleEvent: { _ in }, processUnverifiedWSEvent: { wsEvent in
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let prefix = label.isEmpty ? "" : "(\(label)) "
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switch wsEvent {
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case .connected:
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connectionContinuation?.resume()
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case .message(let message):
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print("SUBSCRIPTION_MANAGER_NEGENTROPY_TEST \(prefix): Received: \(message)")
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case .disconnected(let closeCode, let string):
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print("SUBSCRIPTION_MANAGER_NEGENTROPY_TEST \(prefix): Disconnected: \(closeCode); \(String(describing: string))")
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case .error(let error):
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print("SUBSCRIPTION_MANAGER_NEGENTROPY_TEST \(prefix): Received error: \(error)")
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}
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})
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relayConnection.connect()
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// Wait for connection to be established
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await withCheckedContinuation { continuation in
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connectionContinuation = continuation
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}
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return relayConnection
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}
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/// Sends events to a relay connection.
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/// - Parameters:
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/// - events: Array of NostrEvent to send
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/// - connection: The RelayConnection to send events through
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private func sendEvents(_ events: [NostrEvent], to connection: RelayConnection) {
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for event in events {
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connection.send(.typical(.event(event)))
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}
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}
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/// Sets up a NostrNetworkManager with the specified relay URLs.
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/// - Parameters:
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/// - urls: Array of RelayURL to add to the manager
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/// - ndb: The Ndb instance to use
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/// - Returns: Configured and connected NostrNetworkManager
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private func setupNetworkManager(with urls: [RelayURL], ndb: Ndb) async throws -> NostrNetworkManager {
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let delegate = TestNetworkDelegate(ndb: ndb, keypair: test_keypair, bootstrapRelays: urls)
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let networkManager = NostrNetworkManager(delegate: delegate, addNdbToRelayPool: true)
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// Manually add relays to the pool since we're bypassing normal initialization
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for url in urls {
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do {
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try await networkManager.userRelayList.insert(relay: .init(url: url, rwConfiguration: .readWrite), force: true)
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}
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catch {
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switch error {
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case .relayAlreadyExists: continue
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default: throw error
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}
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}
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}
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await networkManager.userRelayList.connect()
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// Wait for relay pool to be ready.
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// It's generally not a good idea to hard code delays but RelayPool does not seem to provide any way to await for the connection to fully go through,
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// or that mechanism is not well documented.
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try await Task.sleep(for: .seconds(2))
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return networkManager
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}
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/// Stores events in NostrDB for testing purposes.
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/// - Parameters:
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/// - events: Array of NostrEvent to store in NDB
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/// - ndb: The Ndb instance to store events in
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private func storeEventsInNdb(_ events: [NostrEvent], ndb: Ndb) {
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for event in events {
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do {
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try ndb.add(event: event)
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} catch {
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XCTFail("Failed to store event in NDB: \(error)")
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}
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}
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}
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/// Runs a subscription manager stream and fulfills expectations based on received events and EOSE signals.
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/// - Parameters:
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/// - networkManager: The network manager to subscribe through
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/// - filters: The NostrFilters to apply
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/// - streamMode: The stream mode to use for subscription
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/// - ndbEventExpectations: Dictionary mapping event IDs to expectations for events from NDB
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/// - negentropyEventExpectations: Dictionary mapping event IDs to expectations for events from negentropy
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/// - ndbEoseExpectation: Optional expectation to fulfill when NDB EOSE is received
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/// - networkEoseExpectation: Optional expectation to fulfill when network EOSE is received
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/// - eoseExpectation: Optional expectation to fulfill when final EOSE is received
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private func runAdvancedStream(
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networkManager: NostrNetworkManager,
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filters: [NostrFilter],
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streamMode: NostrNetworkManager.StreamMode,
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ndbEventExpectations: [NoteId: XCTestExpectation],
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negentropyEventExpectations: [NoteId: XCTestExpectation],
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ndbEoseExpectation: XCTestExpectation? = nil,
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networkEoseExpectation: XCTestExpectation? = nil,
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eoseExpectation: XCTestExpectation? = nil
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) {
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Task {
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var ndbEoseSeen = false
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for await item in networkManager.reader.advancedStream(filters: filters, streamMode: streamMode) {
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switch item {
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case .event(let lender):
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try? lender.borrow { event in
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// Check if this event came before or after NDB EOSE
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if !ndbEoseSeen {
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// Event came from NDB - verify it's expected from NDB
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if negentropyEventExpectations[event.id] != nil {
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XCTFail("Event \(event.id) arrived from NDB (before ndbEose) but was expected from negentropy (after ndbEose). This indicates incorrect streaming behavior.")
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}
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if let expectation = ndbEventExpectations[event.id] {
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expectation.fulfill()
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}
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} else {
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// Event came from negentropy sync (after NDB EOSE) - verify it's expected from negentropy
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if ndbEventExpectations[event.id] != nil {
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XCTFail("Event \(event.id) arrived from negentropy (after ndbEose) but was expected from NDB (before ndbEose). This indicates incorrect streaming behavior.")
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}
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if let expectation = negentropyEventExpectations[event.id] {
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expectation.fulfill()
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}
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}
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}
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case .ndbEose:
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ndbEoseSeen = true
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ndbEoseExpectation?.fulfill()
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case .networkEose:
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networkEoseExpectation?.fulfill()
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case .eose:
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eoseExpectation?.fulfill()
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return
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}
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}
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}
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}
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// MARK: - Test Cases
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/// Test basic negentropy streaming where local NDB has one event and relay has two events.
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/// Should stream noteA from NDB first, then sync noteB via negentropy from the relay.
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func testBasicNegentropyStreaming() async throws {
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// Given: A relay with noteA and noteB, and local NDB has noteA
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let relay = try await setupRelay(port: 9080)
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let relayUrl = RelayURL(await relay.url().description)!
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let noteA = NostrEvent(content: "A", keypair: test_keypair)!
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let noteB = NostrEvent(content: "B", keypair: test_keypair)!
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let relayConnection = await connectToRelay(url: relayUrl)
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sendEvents([noteA, noteB], to: relayConnection)
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let ndb = await test_damus_state.ndb
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storeEventsInNdb([noteA], ndb: ndb)
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let networkManager = try await setupNetworkManager(with: [relayUrl], ndb: ndb)
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let getsNoteAFromNdb = XCTestExpectation(description: "Gets note A from NDB before ndbEose")
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let getsNoteBFromNegentropy = XCTestExpectation(description: "Gets note B via negentropy after ndbEose")
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let ndbEose = XCTestExpectation(description: "Receives NDB EOSE")
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let networkEose = XCTestExpectation(description: "Receives network EOSE")
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// When: Using negentropy streaming mode
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runAdvancedStream(
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networkManager: networkManager,
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filters: [NostrFilter(kinds: [.text])],
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streamMode: .ndbAndNetworkParallel(networkOptimization: .negentropy),
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ndbEventExpectations: [noteA.id: getsNoteAFromNdb],
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negentropyEventExpectations: [noteB.id: getsNoteBFromNegentropy],
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ndbEoseExpectation: ndbEose,
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networkEoseExpectation: networkEose
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)
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// Then: Should receive noteA from NDB, then ndbEose, then noteB via negentropy, then networkEose
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await fulfillment(of: [getsNoteAFromNdb, ndbEose, getsNoteBFromNegentropy, networkEose], timeout: 10.0, enforceOrder: true)
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}
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/// Test negentropy streaming with empty local storage.
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/// Should sync all events from the relay via negentropy.
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func testEmptyLocalStorageNegentropySync() async throws {
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// Given: A relay with noteA and noteB, and empty local NDB
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let relay = try await setupRelay(port: 9081)
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let relayUrl = RelayURL(await relay.url().description)!
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let noteA = NostrEvent(content: "A", keypair: test_keypair)!
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let noteB = NostrEvent(content: "B", keypair: test_keypair)!
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let relayConnection = await connectToRelay(url: relayUrl)
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sendEvents([noteA, noteB], to: relayConnection)
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let ndb = await test_damus_state.ndb
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// Note: Not storing any events in NDB - testing empty local storage
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let networkManager = try await setupNetworkManager(with: [relayUrl], ndb: ndb)
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let getsNoteAFromNegentropy = XCTestExpectation(description: "Gets note A via negentropy after ndbEose")
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let getsNoteBFromNegentropy = XCTestExpectation(description: "Gets note B via negentropy after ndbEose")
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let ndbEose = XCTestExpectation(description: "Receives NDB EOSE")
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let networkEose = XCTestExpectation(description: "Receives network EOSE")
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// When: Using negentropy streaming mode with empty local storage
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runAdvancedStream(
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networkManager: networkManager,
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filters: [NostrFilter(kinds: [.text])],
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streamMode: .ndbAndNetworkParallel(networkOptimization: .negentropy),
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ndbEventExpectations: [:],
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negentropyEventExpectations: [noteA.id: getsNoteAFromNegentropy, noteB.id: getsNoteBFromNegentropy],
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ndbEoseExpectation: ndbEose,
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networkEoseExpectation: networkEose
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)
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// Then: Should receive ndbEose first, then all events via negentropy, then networkEose
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// (Order not enforced because we don't make guarantees on the order of A/B)
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await fulfillment(of: [ndbEose, getsNoteAFromNegentropy, getsNoteBFromNegentropy, networkEose], timeout: 10.0)
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}
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/// Test negentropy streaming when all events are already synced locally.
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/// Should stream events from NDB only, without syncing from relays.
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func testAllEventsSyncedNegentropyMode() async throws {
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// Given: A relay with noteA and noteB, and local NDB has both events
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let relay = try await setupRelay(port: 9082)
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let relayUrl = RelayURL(await relay.url().description)!
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let noteA = NostrEvent(content: "A", keypair: test_keypair)!
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let noteB = NostrEvent(content: "B", keypair: test_keypair)!
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let relayConnection = await connectToRelay(url: relayUrl)
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sendEvents([noteA, noteB], to: relayConnection)
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let ndb = await test_damus_state.ndb
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storeEventsInNdb([noteA, noteB], ndb: ndb)
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let networkManager = try await setupNetworkManager(with: [relayUrl], ndb: ndb)
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let getsNoteAFromNdb = XCTestExpectation(description: "Gets note A from NDB before ndbEose")
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let getsNoteBFromNdb = XCTestExpectation(description: "Gets note B from NDB before ndbEose")
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let ndbEose = XCTestExpectation(description: "Receives NDB EOSE")
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let networkEose = XCTestExpectation(description: "Receives network EOSE")
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// When: Using negentropy streaming mode with all events already synced
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runAdvancedStream(
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networkManager: networkManager,
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filters: [NostrFilter(kinds: [.text])],
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streamMode: .ndbAndNetworkParallel(networkOptimization: .negentropy),
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ndbEventExpectations: [noteA.id: getsNoteAFromNdb, noteB.id: getsNoteBFromNdb],
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negentropyEventExpectations: [:],
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ndbEoseExpectation: ndbEose,
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networkEoseExpectation: networkEose
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)
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// Then: Should receive all events from NDB before ndbEose, then networkEose (no new events to sync)
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// (Order not enforced because we don't make guarantees on the order of A/B)
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await fulfillment(of: [getsNoteAFromNdb, getsNoteBFromNdb, ndbEose, networkEose], timeout: 10.0)
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}
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/// Test negentropy streaming with two relays having overlapping events.
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/// Relay1 has noteA+noteB, Relay2 has noteB+noteC, local NDB has noteB.
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/// Should stream noteB from NDB, then sync noteA and noteC via negentropy (deduplicating noteB).
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func testTwoRelaysWithOverlapNegentropySync() async throws {
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// Given: Two relays with overlapping events and local NDB has noteB
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let relay1 = try await setupRelay(port: 9083)
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let relay2 = try await setupRelay(port: 9084)
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let relayUrl1 = RelayURL(await relay1.url().description)!
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let relayUrl2 = RelayURL(await relay2.url().description)!
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let noteA = NostrEvent(content: "A", keypair: test_keypair)!
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let noteB = NostrEvent(content: "B", keypair: test_keypair)!
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let noteC = NostrEvent(content: "C", keypair: test_keypair)!
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// Connect to relay1 and send noteA + noteB
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let relayConnection1 = await connectToRelay(url: relayUrl1, label: "Relay1")
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sendEvents([noteA, noteB], to: relayConnection1)
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// Connect to relay2 and send noteB + noteC
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let relayConnection2 = await connectToRelay(url: relayUrl2, label: "Relay2")
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sendEvents([noteB, noteC], to: relayConnection2)
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let ndb = await test_damus_state.ndb
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storeEventsInNdb([noteB], ndb: ndb)
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let networkManager = try await setupNetworkManager(with: [relayUrl1, relayUrl2], ndb: ndb)
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let getsNoteBFromNdb = XCTestExpectation(description: "Gets note B from NDB before ndbEose")
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let getsNoteAFromNegentropy = XCTestExpectation(description: "Gets note A via negentropy after ndbEose")
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let getsNoteCFromNegentropy = XCTestExpectation(description: "Gets note C via negentropy after ndbEose")
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let ndbEose = XCTestExpectation(description: "Receives NDB EOSE")
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let networkEose = XCTestExpectation(description: "Receives network EOSE")
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// When: Using negentropy streaming mode across two relays
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runAdvancedStream(
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networkManager: networkManager,
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filters: [NostrFilter(kinds: [.text])],
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streamMode: .ndbAndNetworkParallel(networkOptimization: .negentropy),
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ndbEventExpectations: [noteB.id: getsNoteBFromNdb],
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negentropyEventExpectations: [noteA.id: getsNoteAFromNegentropy, noteC.id: getsNoteCFromNegentropy],
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ndbEoseExpectation: ndbEose,
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networkEoseExpectation: networkEose
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)
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// Then: Should receive noteB from NDB, then ndbEose, then noteA and noteC via negentropy
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// (Order not enforced because we don't make guarantees on the order of A/C)
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await fulfillment(of: [getsNoteBFromNdb, ndbEose, getsNoteAFromNegentropy, getsNoteCFromNegentropy, networkEose], timeout: 10.0)
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}
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/// Test negentropy streaming with three relays having different overlapping patterns.
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/// Relay1 has A+B, Relay2 has B+C, Relay3 has C+D, local NDB has A+C.
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/// Should stream A and C from NDB, then sync B and D via negentropy.
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func testThreeRelaysPartialSyncNegentropy() async throws {
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// Given: Three relays with overlapping events and local NDB has noteA and noteC
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let relay1 = try await setupRelay(port: 9085)
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let relay2 = try await setupRelay(port: 9086)
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let relay3 = try await setupRelay(port: 9087)
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let relayUrl1 = RelayURL(await relay1.url().description)!
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let relayUrl2 = RelayURL(await relay2.url().description)!
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let relayUrl3 = RelayURL(await relay3.url().description)!
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let noteA = NostrEvent(content: "A", keypair: test_keypair)!
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let noteB = NostrEvent(content: "B", keypair: test_keypair)!
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let noteC = NostrEvent(content: "C", keypair: test_keypair)!
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let noteD = NostrEvent(content: "D", keypair: test_keypair)!
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// Connect to relay1 and send noteA + noteB
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let relayConnection1 = await connectToRelay(url: relayUrl1, label: "Relay1")
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sendEvents([noteA, noteB], to: relayConnection1)
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// Connect to relay2 and send noteB + noteC
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let relayConnection2 = await connectToRelay(url: relayUrl2, label: "Relay2")
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sendEvents([noteB, noteC], to: relayConnection2)
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// Connect to relay3 and send noteC + noteD
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let relayConnection3 = await connectToRelay(url: relayUrl3, label: "Relay3")
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sendEvents([noteC, noteD], to: relayConnection3)
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let ndb = await test_damus_state.ndb
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storeEventsInNdb([noteA, noteC], ndb: ndb)
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let networkManager = try await setupNetworkManager(with: [relayUrl1, relayUrl2, relayUrl3], ndb: ndb)
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let getsNoteAFromNdb = XCTestExpectation(description: "Gets note A from NDB before ndbEose")
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let getsNoteCFromNdb = XCTestExpectation(description: "Gets note C from NDB before ndbEose")
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let getsNoteBFromNegentropy = XCTestExpectation(description: "Gets note B via negentropy after ndbEose")
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let getsNoteDFromNegentropy = XCTestExpectation(description: "Gets note D via negentropy after ndbEose")
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let ndbEose = XCTestExpectation(description: "Receives NDB EOSE")
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let networkEose = XCTestExpectation(description: "Receives network EOSE")
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// When: Using negentropy streaming mode across three relays with partial overlap
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runAdvancedStream(
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networkManager: networkManager,
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filters: [NostrFilter(kinds: [.text])],
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streamMode: .ndbAndNetworkParallel(networkOptimization: .negentropy),
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ndbEventExpectations: [noteA.id: getsNoteAFromNdb, noteC.id: getsNoteCFromNdb],
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negentropyEventExpectations: [noteB.id: getsNoteBFromNegentropy, noteD.id: getsNoteDFromNegentropy],
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ndbEoseExpectation: ndbEose,
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networkEoseExpectation: networkEose
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)
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// Then: Should receive A and C from NDB, then ndbEose, then B and D via negentropy
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// (Order not enforced because we don't make guarantees on the order of A/C and B/D)
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await fulfillment(of: [getsNoteAFromNdb, getsNoteCFromNdb, ndbEose, getsNoteBFromNegentropy, getsNoteDFromNegentropy, networkEose], timeout: 10.0)
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}
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/// Test negentropy streaming with multiple filters for different event kinds.
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/// Relay1 has text notes A+B (kind 1), Relay2 has text B + DM C (kind 4), Relay3 has DMs C+D (kind 4).
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/// Local NDB has text note A (kind 1) and DM C (kind 4).
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/// Should stream A and C from NDB, then sync B and D via negentropy.
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func testMultipleFiltersWithDifferentKindsNegentropy() async throws {
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// Given: Three relays with mixed event kinds and local NDB has text note A and DM C
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let relay1 = try await setupRelay(port: 9089)
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let relay2 = try await setupRelay(port: 9090)
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let relay3 = try await setupRelay(port: 9091)
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let relayUrl1 = RelayURL(await relay1.url().description)!
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let relayUrl2 = RelayURL(await relay2.url().description)!
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let relayUrl3 = RelayURL(await relay3.url().description)!
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// Create events with different kinds
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// kind 1 = text notes, kind 4 = encrypted DMs
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let noteA = NostrEvent(content: "A", keypair: test_keypair, kind: 1)! // text note
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let noteB = NostrEvent(content: "B", keypair: test_keypair, kind: 1)! // text note
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let noteC = NostrEvent(content: "C", keypair: test_keypair, kind: 4)! // DM
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let noteD = NostrEvent(content: "D", keypair: test_keypair, kind: 4)! // DM
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// Connect to relay1 and send text notes A + B
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let relayConnection1 = await connectToRelay(url: relayUrl1, label: "Relay1")
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sendEvents([noteA, noteB], to: relayConnection1)
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// Connect to relay2 and send text note B + DM C
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let relayConnection2 = await connectToRelay(url: relayUrl2, label: "Relay2")
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sendEvents([noteB, noteC], to: relayConnection2)
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// Connect to relay3 and send DMs C + D
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let relayConnection3 = await connectToRelay(url: relayUrl3, label: "Relay3")
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sendEvents([noteC, noteD], to: relayConnection3)
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let ndb = await test_damus_state.ndb
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storeEventsInNdb([noteA, noteC], ndb: ndb)
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let networkManager = try await setupNetworkManager(with: [relayUrl1, relayUrl2, relayUrl3], ndb: ndb)
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let getsNoteAFromNdb = XCTestExpectation(description: "Gets text note A from NDB before ndbEose")
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let getsNoteCFromNdb = XCTestExpectation(description: "Gets DM C from NDB before ndbEose")
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let getsNoteBFromNegentropy = XCTestExpectation(description: "Gets text note B via negentropy after ndbEose")
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let getsNoteDFromNegentropy = XCTestExpectation(description: "Gets DM D via negentropy after ndbEose")
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let ndbEose = XCTestExpectation(description: "Receives NDB EOSE")
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let networkEose = XCTestExpectation(description: "Receives network EOSE")
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// When: Using negentropy streaming with multiple filters for different kinds
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// Use two filters: one for kind 1 (text), one for kind 4 (DMs)
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runAdvancedStream(
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networkManager: networkManager,
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filters: [
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NostrFilter(kinds: [.text]), // kind 1
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NostrFilter(kinds: [.dm]) // kind 4
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],
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streamMode: .ndbAndNetworkParallel(networkOptimization: .negentropy),
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ndbEventExpectations: [noteA.id: getsNoteAFromNdb, noteC.id: getsNoteCFromNdb],
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negentropyEventExpectations: [noteB.id: getsNoteBFromNegentropy, noteD.id: getsNoteDFromNegentropy],
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ndbEoseExpectation: ndbEose,
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networkEoseExpectation: networkEose
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)
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// Then: Should receive A and C from NDB, then ndbEose, then B and D via negentropy.
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// (Order not enforced because we don't make guarantees on the order of A/C and B/D
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await fulfillment(of: [getsNoteAFromNdb, getsNoteCFromNdb, ndbEose, getsNoteBFromNegentropy, getsNoteDFromNegentropy, networkEose], timeout: 10.0)
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}
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}
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// MARK: - Test Doubles
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/// Test delegate for NostrNetworkManager that provides minimal configuration for testing
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private final class TestNetworkDelegate: NostrNetworkManager.Delegate {
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var ndb: Ndb
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var keypair: Keypair
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var latestRelayListEventIdHex: String?
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var latestContactListEvent: NostrEvent?
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var bootstrapRelays: [RelayURL]
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var developerMode: Bool = false
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var experimentalLocalRelayModelSupport: Bool = false
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var relayModelCache: RelayModelCache
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var relayFilters: RelayFilters
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var nwcWallet: WalletConnectURL?
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init(ndb: Ndb, keypair: Keypair, bootstrapRelays: [RelayURL]) {
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self.ndb = ndb
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self.keypair = keypair
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self.bootstrapRelays = bootstrapRelays
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self.relayModelCache = RelayModelCache()
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self.relayFilters = RelayFilters(our_pubkey: keypair.pubkey)
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}
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}
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