feat(tests): Add an integration test for SASL2

integration_tests/.gitignore

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+# Files and directories created by pub.
+.dart_tool/
+.packages
+
+# Conventional directory for build output.
+build/

integration_tests/README.md

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+# Integration Tests
+
+The included `./prosody.cfg.lua` config file must be used for integration testing.
+Additionally, ensure that a user `testuser@localhost` with the password `abc123`
+exists.

integration_tests/analysis_options.yaml

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+include: ../analysis_options.yaml

integration_tests/certs/localhost.crt

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+-----BEGIN CERTIFICATE-----
+MIIEAzCCAmugAwIBAgIQd61NPnP8++X7h8a+85C6DjANBgkqhkiG9w0BAQsFADBZ
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+8RGyVjZSC4Mz/ddcnMEpRAnjuFJjhGA=
+-----END CERTIFICATE-----

integration_tests/certs/localhost.key

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+-----BEGIN PRIVATE KEY-----
+MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQDUMSURc9j5UNA/
+txKKQrSd7QqAOCisZg8b1HuU5648sfIVhivLvz6EHTfs5PQE7IDa5O7XKuiDR0j/
+hgaJw8MipeEiAd+NX7iQyLlKA7sQJY4GZkWpMLdsHC9s22hbjRoWNhIVo6Sb+ed+
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+dPc4Sz3fFN/sp3UpSlCn05kWsaLXnO/+fq0KatwLfEw5Ue5iSFbRQJMWZ6/tmpuC
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+/oMLQq0GjmBxG/PNd1AFIWDydyH+JcY6U4XWIzIw92OKVYC/KMvd2f9orTfmDyAU
+RsGMfgV90kCzouAZKy3yPmo=
+-----END PRIVATE KEY-----

integration_tests/prosody.cfg.lua

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+admins = { }
+plugin_paths = {}
+
+modules_enabled = {
+	-- Generally required
+		"disco"; -- Service discovery
+		"roster"; -- Allow users to have a roster. Recommended ;)
+		"saslauth"; -- Authentication for clients and servers. Recommended if you want to log in.
+		"tls"; -- Add support for secure TLS on c2s/s2s connections
+
+	-- Not essential, but recommended
+		"blocklist"; -- Allow users to block communications with other users
+		"bookmarks"; -- Synchronise the list of open rooms between clients
+		"carbons"; -- Keep multiple online clients in sync
+		"dialback"; -- Support for verifying remote servers using DNS
+		"limits"; -- Enable bandwidth limiting for XMPP connections
+		"pep"; -- Allow users to store public and private data in their account
+		"private"; -- Legacy account storage mechanism (XEP-0049)
+		"smacks"; -- Stream management and resumption (XEP-0198)
+		"vcard4"; -- User profiles (stored in PEP)
+		"vcard_legacy"; -- Conversion between legacy vCard and PEP Avatar, vcard
+
+	-- Nice to have
+		"csi_simple"; -- Simple but effective traffic optimizations for mobile devices
+		"invites"; -- Create and manage invites
+		"invites_adhoc"; -- Allow admins/users to create invitations via their client
+		"invites_register"; -- Allows invited users to create accounts
+		"ping"; -- Replies to XMPP pings with pongs
+		"register"; -- Allow users to register on this server using a client and change passwords
+		"time"; -- Let others know the time here on this server
+		"uptime"; -- Report how long server has been running
+		"version"; -- Replies to server version requests
+
+	-- SASL2
+	        "sasl2";
+		"sasl2_sm";
+		"sasl2_fast";
+		"sasl2_bind2";
+}
+
+s2s_secure_auth = false
+
+-- Authentication
+authentication = "internal_plain"
+
+-- Storage
+storage = "internal"
+data_path = "/tmp/prosody-data/"
+log = {
+	debug = "*console";
+}
+
+pidfile = "/tmp/prosody.pid"
+
+VirtualHost "localhost"
+

integration_tests/pubspec.yaml

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+name: integration_tests
+description: A sample command-line application.
+version: 1.0.0
+
+environment:
+  sdk: '>=2.18.0 <3.0.0'
+
+dependencies:
+  logging: ^1.0.2
+  moxxmpp: 0.2.0
+  moxxmpp_socket_tcp: 0.2.1
+  
+dev_dependencies:
+  lints: ^2.0.0
+  test: ^1.16.0
+  very_good_analysis: ^3.0.1

integration_tests/test/sasl2_test.dart

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+import 'package:logging/logging.dart';
+import 'package:moxxmpp/moxxmpp.dart';
+import 'package:moxxmpp_socket_tcp/moxxmpp_socket_tcp.dart';
+import 'package:test/test.dart';
+
+class TestingTCPSocketWrapper extends TCPSocketWrapper {
+  @override
+  bool onBadCertificate(dynamic certificate, String domain) {
+    return true;
+  }
+}
+
+void main() {
+  Logger.root.level = Level.ALL;
+  Logger.root.onRecord.listen((record) {
+    // ignore: avoid_print
+    print(
+      '[${record.level.name}] (${record.loggerName}) ${record.time}: ${record.message}',
+    );
+  });
+
+  test('Test authenticating against Prosody with SASL2, Bind2, and FAST', () async {
+    final conn = XmppConnection(
+      TestingReconnectionPolicy(),
+      AlwaysConnectedConnectivityManager(),
+      TestingTCPSocketWrapper(),
+    )..setConnectionSettings(
+        ConnectionSettings(
+          jid: JID.fromString('testuser@localhost'),
+          password: 'abc123',
+          useDirectTLS: false,
+
+          host: '127.0.0.1',
+          port: 5222,
+        ),
+      );
+    final csi = CSIManager();
+    await csi.setInactive(sendNonza: false);
+    await conn.registerManagers([
+      RosterManager(TestingRosterStateManager('', [])),
+      DiscoManager([]),
+    ]);
+    await conn.registerFeatureNegotiators([
+      SaslPlainNegotiator(),
+      ResourceBindingNegotiator(),
+      FASTSaslNegotiator(),
+      Bind2Negotiator(),
+      StartTlsNegotiator(),
+      Sasl2Negotiator(
+        userAgent: const UserAgent(
+          id: 'd4565fa7-4d72-4749-b3d3-740edbf87770',
+          software: 'moxxmpp',
+          device: "PapaTutuWawa's awesome device",
+        ),
+      ),
+    ]);
+
+    final result = await conn.connect(
+      waitUntilLogin: true,
+      shouldReconnect: false,
+      enableReconnectOnSuccess: false,
+    );
+    expect(result.isType<bool>(), true);
+    expect(conn.getNegotiatorById<Sasl2Negotiator>(sasl2Negotiator)!.state, NegotiatorState.done);
+    expect(conn.getNegotiatorById<FASTSaslNegotiator>(saslFASTNegotiator)!.fastToken != null, true,);
+  });
+}