adding test engine dependency to pt-solver

zpp-solver/pt-solver/pom.xml

@@ -27,6 +27,11 @@
             <version>${melodic.version}</version>
             <type>jar</type>
         </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
     <build>
         <finalName>${project.artifactId}</finalName>