diff --git a/plugin/src/test/java/com/stratio/cassandra/lucene/schema/column/ColumnsTest.java b/plugin/src/test/java/com/stratio/cassandra/lucene/schema/column/ColumnsTest.java
index <HASH>..<HASH> 100644
--- a/plugin/src/test/java/com/stratio/cassandra/lucene/schema/column/ColumnsTest.java
+++ b/plugin/src/test/java/com/stratio/cassandra/lucene/schema/column/ColumnsTest.java
@@ -96,4 +96,13 @@ public class ColumnsTest {
     public void testToString() {
         assertEquals("Method #toString is wrong", "Columns{}", new Columns().toString());
     }
+
+    @Test
+    public void testToStringWithColumns() {
+        Columns columns = new Columns();
+        columns.add(Column.fromComposed("field1", "item1", "value1", UTF8Type.instance, false));
+        columns.add(Column.fromComposed("field1", "item2", "value1", UTF8Type.instance, false));
+        columns.add(Column.fromComposed("field2", "item1", "value2", UTF8Type.instance, false));
+        assertEquals("Method #toString is wrong", "Columns{field1.item1=value1, field1.item2=value1, field2.item1=value2}", columns.toString());
+    }
 }
Added testToStringWithColumns to ColumnsTest to improve coberture