openjava-software
diff --git a/‎src/test/java/org/lmdbjava/TxnTest.java‎
Lines changed: 44 additions & 0 deletions b/‎src/test/java/org/lmdbjava/TxnTest.java‎
Lines changed: 44 additions & 0 deletions
@@ -25,18 +25,26 @@
 import java.io.IOException;
 import java.nio.ByteBuffer;
 import static java.nio.ByteBuffer.allocateDirect;
+
+import java.util.ArrayList;
+import java.util.List;
 import java.util.concurrent.atomic.AtomicLong;
+
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.hamcrest.CoreMatchers.is;
 import static org.hamcrest.CoreMatchers.not;
 import static org.hamcrest.CoreMatchers.notNullValue;
 import static org.hamcrest.CoreMatchers.nullValue;
 import static org.hamcrest.MatcherAssert.assertThat;
+
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.TemporaryFolder;
 import org.lmdbjava.Dbi.BadValueSizeException;
+
+import static org.junit.Assert.assertEquals;
 import static org.lmdbjava.DbiFlags.MDB_CREATE;
 import org.lmdbjava.Env.AlreadyClosedException;
 import static org.lmdbjava.Env.create;
@@ -262,4 +270,40 @@ public void zeroByteKeysRejected() throws IOException {
     dbi.put(key, bb(2));
   }
 
+
+  @Test
+  public void rangeSearch() {
+    final Dbi<ByteBuffer> db = env.openDbi(DB_1, MDB_CREATE);
+
+    final ByteBuffer key = allocateDirect(env.getMaxKeySize());
+    key.put("cherry".getBytes(UTF_8)).flip();
+    db.put(key, bb(1));
+
+    key.clear();
+    key.put("strawberry".getBytes(UTF_8)).flip();
+    db.put(key, bb(3));
+
+    key.clear();
+    key.put("pineapple".getBytes(UTF_8)).flip();
+    db.put(key, bb(2));
+
+    try (Txn<ByteBuffer> txn = env.txnRead()) {
+      ByteBuffer start = allocateDirect(env.getMaxKeySize());
+      start.put("a".getBytes(UTF_8)).flip();
+
+      ByteBuffer end = allocateDirect(env.getMaxKeySize());
+      end.put("z".getBytes(UTF_8)).flip();
+
+      List<String> keysFound = new ArrayList<>();
+      CursorIterator<ByteBuffer> ckr = db.iterate(txn, KeyRange.closed(start, end));
+      for (final CursorIterator.KeyVal<ByteBuffer> kv : ckr.iterable()) {
+        keysFound.add(UTF_8.decode(kv.key()).toString());
+      }
+
+      System.out.println(keysFound);
+      assertEquals(2, keysFound.size());
+
+    }
+  }
+
 }