1 files changed, 17 insertions, 0 deletions
diff --git a/tensorflow/java/src/test/java/org/tensorflow/op/ScopeTest.java b/tensorflow/java/src/test/java/org/tensorflow/op/ScopeTest.java
index 125de73554..2057007499 100644
--- a/tensorflow/java/src/test/java/org/tensorflow/op/ScopeTest.java
+++ b/tensorflow/java/src/test/java/org/tensorflow/op/ScopeTest.java
@@ -17,10 +17,12 @@ package org.tensorflow.op;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
 import java.util.HashMap;
 import java.util.Map;
+
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
@@ -181,6 +183,21 @@ public class ScopeTest {
       assertEquals(21704, result.intValue());
     }
   }
+  
+  @Test
+  public void prefix() {
+    try (Graph g = new Graph()) {
+      Scope s = new Scope(g);
+      assertNotNull(s.prefix());
+      assertTrue(s.prefix().isEmpty());
+      
+      Scope sub1 = s.withSubScope("sub1");
+      assertEquals("sub1", sub1.prefix());
+
+      Scope sub2 = sub1.withSubScope("sub2");
+      assertEquals("sub1/sub2", sub2.prefix());
+    }
+  }
 
   // "handwritten" sample operator classes
   private static final class Const<T> {