added mock unit tests for worker

worker/pom.xml

@@ -28,6 +28,20 @@
         <artifactId>postgresql</artifactId>
         <version>9.4-1200-jdbc41</version>
     </dependency>
+
+    <dependency>
+        <groupId>org.junit.jupiter</groupId>
+        <artifactId>junit-jupiter-api</artifactId>
+        <version>5.4.2</version>
+        <scope>test</scope>
+    </dependency>
+    <dependency>
+        <groupId>org.junit.jupiter</groupId>
+        <artifactId>junit-jupiter-engine</artifactId>
+        <version>5.4.2</version>
+        <scope>test</scope>
+    </dependency>
+
   </dependencies>
 
   <build>
@@ -79,6 +93,11 @@
           </execution>
         </executions>
       </plugin>
+      <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-surefire-plugin</artifactId>
+            <version>2.22.1</version>
+      </plugin>
     </plugins>
   </build>
 </project>

worker/src/test/java/worker/unitWorker.java

@@ -0,0 +1,25 @@
+import org.junit.jupiter.api.Test;
+
+class WorkerUnitTest {
+
+    @Test
+    void sample1() {
+
+    }
+
+
+    @Test
+    void sample2() {
+
+    }
+
+    @Test
+    void sample3() {
+
+    }
+
+    @Test
+    void sample4() {
+
+    }
+}