1 files changed, 88 insertions, 0 deletions
diff --git a/src/test/java/testing/protocols/MessageDeliveryDebug2Test.java b/src/test/java/testing/protocols/MessageDeliveryDebug2Test.java
new file mode 100644
index 0000000..abebfe0
--- /dev/null
+++ b/src/test/java/testing/protocols/MessageDeliveryDebug2Test.java
@@ -0,0 +1,88 @@
+package testing.protocols;
+
+import testing.*;
+import org.junit.jupiter.api.*;
+import static org.junit.jupiter.api.Assertions.*;
+import java.lang.reflect.Field;
+import core.VSTask;
+import core.VSTaskManager;
+import java.util.*;
+
+/**
+ * Extended debug test to understand why protocols are running twice.
+ */
+public class MessageDeliveryDebug2Test {
+    private HeadlessSimulationRunner runner;
+    
+    @BeforeEach
+    public void setup() {
+        runner = new HeadlessSimulationRunner();
+    }
+    
+    @AfterEach
+    public void teardown() {
+        runner.shutdown();
+    }
+    
+    @Test
+    @DisplayName("Debug why PingPong client sends two messages")
+    public void debugDuplicateMessages() throws Exception {
+        System.out.println("\n=== Starting Duplicate Message Debug Test ===");
+        
+        // Custom log listener to trace task execution
+        LogListener listener = new LogListener() {
+            private int messagesSent = 0;
+            
+            @Override
+            public void onLogEntry(LogEntry entry) {
+                String msg = entry.getMessage();
+                
+                // Track all events
+                if (msg.contains("activated") || msg.contains("Message sent") || 
+                    msg.contains("onClientStart") || msg.contains("counter=")) {
+                    System.out.println(String.format("[TRACE %5d] P%d: %s", 
+                        entry.getTimestamp(), entry.getProcessNum(), msg));
+                    
+                    if (msg.contains("Message sent")) {
+                        messagesSent++;
+                        if (messagesSent == 2) {
+                            System.out.println("!!! ISSUE: Second message sent immediately at time " + 
+                                entry.getTimestamp() + " - protocol likely executed twice!");
+                        }
+                    }
+                }
+                
+                // Look for protocol event execution
+                if (msg.contains("VSProtocolEvent") || msg.contains("VSPingPongProtocol")) {
+                    System.out.println(String.format("[EVENT %5d] P%d: %s", 
+                        entry.getTimestamp(), entry.getProcessNum(), msg));
+                }
+            }
+        };
+        
+        SimulationResult result = runner.runSimulation(
+            "saved-simulations/ping-pong.dat", 
+            1000,  // Just 1 second is enough to see the issue
+            listener
+        );
+        
+        System.out.println("\n=== Analysis ===");
+        
+        // Count messages sent at time 0
+        int messagesAtTimeZero = 0;
+        for (LogEntry entry : result.getAllLogs()) {
+            if (entry.getTimestamp() == 0 && entry.getMessage().contains("Message sent")) {
+                messagesAtTimeZero++;
+                System.out.println("Message at time 0: " + entry.getMessage());
+            }
+        }
+        
+        System.out.println("\nMessages sent at time 0: " + messagesAtTimeZero);
+        
+        if (messagesAtTimeZero > 1) {
+            System.out.println("ERROR: Multiple messages sent at time 0 indicates duplicate protocol execution!");
+        }
+        
+        System.out.println("\n=== Test Complete ===");
+    }
+}
+\ No newline at end of file