Added unit test support

.gitignore

@@ -6,7 +6,6 @@ target/**
 TODO.txt
 packet.pkt
 plugins/**
-src/test/
 target/
 config.ini
 *.txt

.gitlab-ci.yml

@@ -15,4 +15,3 @@ build:
     expire_in: 2 weeks
     paths:
       - target/Morningstar-*.jar
-  

pom.xml

@@ -10,7 +10,9 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-
+        <junit.jupiter.version>5.9.2</junit.jupiter.version>
+        <junit.platform.version>1.9.2</junit.platform.version>
+        <org.mockito.version>4.11.0</org.mockito.version>
         <additionalparam>-Xdoclint:none</additionalparam>
     </properties>
 
@@ -179,7 +181,49 @@
             <version>7.7.3</version>
         </dependency>
 
-<!--        <dependency>-->
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <version>${junit.jupiter.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <version>${junit.jupiter.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-params</artifactId>
+            <version>${junit.jupiter.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-runner</artifactId>
+            <version>${junit.platform.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>${org.mockito.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-junit-jupiter</artifactId>
+            <version>${org.mockito.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <!--        <dependency>-->
 <!--            <groupId>org.flywaydb</groupId>-->
 <!--            <artifactId>flyway-mysql</artifactId>-->
 <!--            <version>9.11.0</version>-->

src/test/java/com/eu/habbo/core/ClassNameTest.java

@@ -0,0 +1,16 @@
+package com.eu.habbo.core;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.junit.jupiter.MockitoExtension;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+@ExtendWith(MockitoExtension.class)
+public class ClassNameTest {
+
+    @Test
+    public void test() {
+        assertEquals("Hello, World!", "Hello, World!");
+    }
+}