1 files changed, 4 insertions, 0 deletions
diff --git a/test/org/traccar/ProtocolTest.java b/test/org/traccar/ProtocolTest.java
index 3b801c6eb..cb9cdf759 100644
--- a/test/org/traccar/ProtocolTest.java
+++ b/test/org/traccar/ProtocolTest.java
@@ -245,6 +245,10 @@ public class ProtocolTest extends BaseTest {
             Assert.assertTrue(attributes.get(Position.KEY_ARCHIVE) instanceof Boolean);
         }
 
+        if (attributes.containsKey(Position.KEY_DRIVER_UNIQUE_ID)) {
+            Assert.assertTrue(attributes.get(Position.KEY_DRIVER_UNIQUE_ID) instanceof String);
+        }
+
         if (position.getNetwork() != null && position.getNetwork().getCellTowers() != null) {
             for (CellTower cellTower : position.getNetwork().getCellTowers()) {
                 checkInteger(cellTower.getMobileCountryCode(), 0, 999);