Merge "Fix testDockedStackToMinimizeWhenUnlocked and make it @Presubmit"
diff --git a/tests/tests/view/src/android/view/textclassifier/cts/TextClassificationManagerTest.java b/tests/tests/view/src/android/view/textclassifier/cts/TextClassificationManagerTest.java
index 125374d..f066898 100644
--- a/tests/tests/view/src/android/view/textclassifier/cts/TextClassificationManagerTest.java
+++ b/tests/tests/view/src/android/view/textclassifier/cts/TextClassificationManagerTest.java
@@ -119,6 +119,7 @@
             assertTrue(confidenceScore >= 0);
             assertTrue(confidenceScore <= 1);
         }
+        assertNotNull(selection.getSignature());
     }
 
     private static void assertValidResult(TextClassification classification) {
@@ -132,6 +133,7 @@
             assertTrue(confidenceScore <= 1);
         }
         assertTrue(classification.getSecondaryActionsCount() >= 0);
+        assertNotNull(classification.getSignature());
     }
 
     private static void assertValidResult(TextLinks links) {