Global event bus unittests

pom.xml

@@ -103,6 +103,12 @@
             <artifactId>lwjgl-stb</artifactId>
             <classifier>${lwjgl.natives}</classifier>
         </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <version>RELEASE</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
 </project>