Add MainTest and update pom.xml for testing

Created a new MainTest class in the test directory and added configurations for JUnit and Mockito to pom.xml for testing purposes. Also made slight adjustments to the Main class in the src/main directory to ensure compatibility with the testing environment.

pom.xml

@@ -105,5 +105,29 @@
             <version>1.12.2-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>3.8.1</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.13.2</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <version>RELEASE</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>5.5.0</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 </project>

src/main/java/org/gecko/wauh/Main.java

@@ -22,8 +22,8 @@ public final class Main extends JavaPlugin {
     private WaterBucketListener waterBucketListener;
     private TNTListener tntListener;
     private CreeperListener creeperListener;
-    private ConfigurationManager configManager;
-    private FileConfiguration config;
+    ConfigurationManager configManager;
+    FileConfiguration config;
 
     @Override
     public void onEnable() {
@@ -119,4 +119,7 @@ public TNTListener getTntListener() {
     public CreeperListener getCreeperListener() {
         return creeperListener;
     }
+    public ConfigurationManager getConfigManager() {
+        return configManager;
+    }
 }

src/test/java/org/gecko/wauh/MainTest.java

@@ -0,0 +1,71 @@
+package org.gecko.wauh;
+
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
+import org.bukkit.Server;
+import org.bukkit.command.ConsoleCommandSender;
+import org.bukkit.configuration.file.FileConfiguration;
+import org.bukkit.plugin.PluginManager;
+import org.bukkit.plugin.java.JavaPlugin;
+import org.gecko.wauh.data.ConfigurationManager;
+import org.gecko.wauh.listeners.*;
+import org.gecko.wauh.commands.SetRadiusLimitCommand;
+import org.gecko.wauh.commands.StopWauh;
+import org.gecko.wauh.commands.ToggleRemovalView;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+
+import static org.mockito.Mockito.*;
+
+public class MainTest {
+
+    private Main plugin;
+    private FileConfiguration config;
+    private ConfigurationManager configManager;
+    private Server server;
+    private PluginManager pluginManager;
+    private ConsoleCommandSender sender;
+
+    @Test
+    public void testOnEnable() {
+
+        plugin = Mockito.spy(Main.class);
+        server = mock(Server.class);
+        pluginManager = mock(PluginManager.class);
+        sender = mock(ConsoleCommandSender.class);
+        config = mock(FileConfiguration.class);
+        configManager = new ConfigurationManager(plugin);
+
+        // Mock Plugin methods
+        when(plugin.getServer()).thenReturn(server);
+        when(server.getPluginManager()).thenReturn(pluginManager);
+        when(server.getConsoleSender()).thenReturn(sender);
+
+        when(plugin.getCommand(anyString())).thenReturn(null);
+
+        // Mock ConfigurationManager methods
+        when(config.getInt(anyString(), anyInt())).thenReturn(10);
+
+        // Mock Main methods
+        when(plugin.getConfigManager()).thenReturn(configManager);
+        when(configManager.getConfig()).thenReturn(config);
+
+        plugin.onEnable();
+
+        // Verify methods called
+        verify(plugin, times(6)).getServer();
+        verify(server, times(6)).getPluginManager();
+        verify(server, times(2)).getConsoleSender();
+        verify(sender, times(2)).sendMessage(anyString());
+        verify(plugin, times(3)).getCommand(anyString());
+
+        // Verify listeners registration
+        verify(pluginManager).registerEvents(any(BucketListener.class), eq(plugin));
+        verify(pluginManager).registerEvents(any(BarrierListener.class), eq(plugin));
+        verify(pluginManager).registerEvents(any(BedrockListener.class), eq(plugin));
+        verify(pluginManager).registerEvents(any(WaterBucketListener.class), eq(plugin));
+        verify(pluginManager).registerEvents(any(TNTListener.class), eq(plugin));
+        verify(pluginManager).registerEvents(any(CreeperListener.class), eq(plugin));
+    }
+}