add junit

pom.xml

@@ -1,5 +1,4 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" 
-  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 
   <modelVersion>4.0.0</modelVersion>
   <groupId>de.hsrm.compiler</groupId>
@@ -21,6 +20,16 @@
       <artifactId>antlr4-runtime</artifactId>
       <version>4.7.2</version>
     </dependency>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-api</artifactId>
+      <version>5.6.0</version>
+    </dependency>
+    <dependency>
+      <groupId>org.junit.jupiter</groupId>
+      <artifactId>junit-jupiter-engine</artifactId>
+      <version>5.6.0</version>
+    </dependency>
   </dependencies>
 
   <build>
@@ -74,6 +83,14 @@
           </execution>
         </executions>
       </plugin>
+      <plugin>
+        <artifactId>maven-surefire-plugin</artifactId>
+        <version>2.22.2</version>
+      </plugin>
+      <plugin>
+        <artifactId>maven-failsafe-plugin</artifactId>
+        <version>2.22.2</version>
+      </plugin>
     </plugins>
   </build>
 </project>