src/de/steamwar/network/packets/PacketHandler.java

@@ -19,6 +19,8 @@
 
 package de.steamwar.network.packets;
 
+import lombok.SneakyThrows;
+
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.reflect.Method;
@@ -39,7 +41,7 @@ public abstract class PacketHandler {
         }
     }
 
-    public PacketHandler() {
+    protected PacketHandler() {
         Method[] methods = getClass().getMethods();
         for (Method method : methods) {
             if(method.getParameterCount() != 1 || !NetworkPacket.class.isAssignableFrom(method.getParameterTypes()[0])) {
@@ -60,16 +62,13 @@ public abstract class PacketHandler {
         PACKET_HANDLERS.remove(this);
     }
 
+    @SneakyThrows
     public void handle(NetworkPacket packet) {
         Method method = HANDLER_MAP.get(packet.getClass());
         if (method == null) {
             return;
         }
-        try {
-            method.invoke(this, packet);
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
+        method.invoke(this, packet);
     }
 
     @Retention(RetentionPolicy.RUNTIME)

testsrc/de/steamwar/network/PacketHandlerTest.java

@@ -0,0 +1,52 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network;
+
+import de.steamwar.network.packets.PacketHandler;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.lang.reflect.InvocationTargetException;
+
+import static org.hamcrest.MatcherAssert.*;
+import static org.hamcrest.Matchers.*;
+
+public class PacketHandlerTest {
+
+    TestPacketHandler packetHandler;
+
+    @Before
+    public void setUp() {
+        packetHandler = new TestPacketHandler();
+        packetHandler.register();
+    }
+
+    @Test
+    public void testPacketHandler() {
+        TestPacket packet = new TestPacket();
+        try {
+            PacketHandler.handlePacket(packet);
+        } catch (Exception e) {
+            assertThat(e, instanceOf(InvocationTargetException.class));
+            assertThat(e.getCause(), instanceOf(SecurityException.class));
+            assertThat(e.getCause().getMessage(), equalTo(packet.getClass().getName()));
+        }
+    }
+}

testsrc/de/steamwar/network/PacketTest.java

@@ -22,7 +22,8 @@ package de.steamwar.network;
 import de.steamwar.network.packets.NetworkPacket;
 import org.junit.Test;
 
-import static org.junit.Assert.*;
+import static org.hamcrest.Matchers.*;
+import static org.hamcrest.MatcherAssert.*;
 
 public class PacketTest {
 
@@ -31,8 +32,7 @@ public class PacketTest {
         for (NetworkPacket allPacket : AllPackets.getAllPackets()) {
             byte[] data = allPacket.serialize();
             NetworkPacket deserializedPacket = NetworkPacket.deserialize(data);
-            assertEquals("Packet: " + allPacket.getClass().getName() + " is not correctly deserialized", allPacket, deserializedPacket);
-            System.out.println("Packet: " + allPacket.getClass().getName() + " is correctly deserialized");
+            assertThat("Packet: " + allPacket.getClass().getName() + " is not correctly deserialized", allPacket, equalTo(deserializedPacket));
         }
     }
 }

testsrc/de/steamwar/network/TestPacket.java

@@ -0,0 +1,30 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network;
+
+import de.steamwar.network.packets.NetworkPacket;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+
+@EqualsAndHashCode(callSuper = true)
+@NoArgsConstructor
+public class TestPacket extends NetworkPacket {
+    private static final long serialVersionUID = -9079104421295590626L;
+}

testsrc/de/steamwar/network/TestPacketHandler.java

@@ -0,0 +1,30 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.network;
+
+import de.steamwar.network.packets.PacketHandler;
+
+public class TestPacketHandler extends PacketHandler {
+
+    @Handler
+    public void handle(TestPacket packet) {
+        throw new SecurityException(packet.getClass().getName());
+    }
+}