--- a/src/main/java/jp/ac/u_ryukyu/ie/cr/bbs/network/NetworkJungleBulletinBoard.java	Wed Jul 19 17:15:37 2017 +0900
+++ b/src/main/java/jp/ac/u_ryukyu/ie/cr/bbs/network/NetworkJungleBulletinBoard.java	Wed Jul 19 18:07:30 2017 +0900
@@ -28,12 +28,12 @@
 import jp.ac.u_ryukyu.ie.cr.jungleNetwork.persistent.NetworkJournal;
 import jp.ac.u_ryukyu.ie.cr.jungleNetwork.persistent.PersistentJournal;
 import jp.ac.u_ryukyu.ie.cr.jungleNetwork.transaction.JungleUpdater;
-import junit.framework.Assert;
 
 import java.io.File;
 import java.io.IOException;
 import java.nio.ByteBuffer;
 import java.util.concurrent.atomic.AtomicInteger;
+import static org.junit.Assert.*;
 
 public class NetworkJungleBulletinBoard implements NetworkBulletinBoard {
     protected final Jungle jungle;
@@ -240,7 +240,7 @@
             DefaultEvaluator evaluator = new DefaultEvaluator(path);
             Either<Error, Traversal> ret = traverser.traverse(node, evaluator);
             if (ret.isA()) {
-                Assert.fail();
+                assertEquals(1,0);
             }
 
             Traversal traversal = ret.b();
@@ -572,7 +572,7 @@
         DefaultEvaluator evaluator = new DefaultEvaluator(path);
         Either<Error, Traversal> ret = traverser.traverse(node, evaluator);
         if (ret.isA()) {
-            Assert.fail();
+            assertEquals(1,0);
         }
 
         Traversal traversal = ret.b();