Checkpoint: Added ExchangeServiceTest

Signed-off-by: Marcin Woźniak <y0rune@aol.com>

buisnesslogic/src/main/java/com/plannaplan/models/MatchData.java

@@ -19,6 +19,11 @@ public class MatchData {
 	return assignmentOne;
     }
 
+    @Override
+    public int hashCode() {
+	return this.assignmentOne.hashCode() + this.assignmentTwo.hashCode();
+    }
+
     @Override
     public boolean equals(Object o) {