Remove dead code and stabilize tests

bitchatTests/Fragmentation/FragmentationTests.swift

@@ -134,7 +134,7 @@ struct FragmentationTests {
             }
         }
 
-        try await sleep(1.0)
+        try await capture.waitForReceivedMessages(count: 1, timeout: .seconds(2))
 
         let message = try #require(capture.receivedMessages.first, "Expected file transfer message")
         #expect(message.content.hasPrefix("[file]"))

bitchatTests/GossipSyncManagerTests.swift

@@ -13,6 +13,7 @@ struct GossipSyncManagerTests {
 
         try await confirmation("sync request sent") { sent in
             delegate.onSend = {
+                delegate.onSend = nil
                 sent()
             }
 
@@ -34,7 +35,7 @@ struct GossipSyncManagerTests {
             }
 
             manager.scheduleInitialSyncToPeer(PeerID(str: "FFFFFFFFFFFFFFFF"), delaySeconds: 0.0)
-            try await sleep(0.002)
+            try await TestHelpers.waitFor({ delegate.lastPacket != nil }, timeout: TestConstants.shortTimeout)
         }
 
         let lastPacket = try #require(delegate.lastPacket, "Expected sync packet to be sent")
@@ -240,7 +241,7 @@ struct GossipSyncManagerTests {
         let request = RequestSyncPacket(p: 4, m: 1, data: Data(), types: .fragment)
         manager.handleRequestSync(from: peer, request: request)
 
-        try await sleep(0.01)
+        try await TestHelpers.waitFor({ delegate.packets.count == 1 }, timeout: TestConstants.shortTimeout)
         let sentPackets = delegate.packets
         #expect(sentPackets.count == 1)
         #expect(sentPackets[0].type == MessageType.fragment.rawValue)

bitchatTests/Noise/NoiseProtocolTests.swift

@@ -746,8 +746,8 @@ struct NoiseProtocolTests {
         }
         
         // Get transport ciphers
-        let (initSend, initRecv) = try initiatorHandshake.getTransportCiphers(useExtractedNonce: false)
-        let (respSend, respRecv) = try responderHandshake.getTransportCiphers(useExtractedNonce: false)
+        let (initSend, initRecv, _) = try initiatorHandshake.getTransportCiphers(useExtractedNonce: false)
+        let (respSend, respRecv, _) = try responderHandshake.getTransportCiphers(useExtractedNonce: false)
 
         // Test transport messages (messages after the 3 handshake messages)
         for index in 3..<testVector.messages.count {