diff --git a/at_commons/test/at_exception_stack_test.dart b/at_commons/test/at_exception_stack_test.dart
index ccb35072..a150a7dc 100644
--- a/at_commons/test/at_exception_stack_test.dart
+++ b/at_commons/test/at_exception_stack_test.dart
@@ -14,11 +14,6 @@ void main() {
           startsWith('Failed to syncData caused by'));
     });
 
-    test('chained exception list size is zero', () {
-      final exceptionStack = AtExceptionStack();
-      expect(exceptionStack.getTraceMessage(), isEmpty);
-    });
-
     test('check intent message', () {
       final atChainedException = AtChainedException(
           Intent.syncData, ExceptionScenario.invalidKeyFormed, 'sync issue');
@@ -28,5 +23,64 @@ void main() {
       expect(exceptionStack.getIntentMessage(Intent.syncData),
           equals('Failed to syncData'));
     });
+
+    test('chained exception list size is zero', () {
+      final exceptionStack = AtExceptionStack();
+      expect(exceptionStack.getTraceMessage(), isEmpty);
+    });
+
+    test('no namespace provided - check trace message', () {
+      final atChainedException = AtChainedException(Intent.validateKey,
+          ExceptionScenario.noNamespaceProvided, 'name space is not provided');
+      final exceptionStack = AtExceptionStack();
+      exceptionStack.add(atChainedException);
+      expect(exceptionStack.getTraceMessage(), isNotEmpty);
+      expect(exceptionStack.getTraceMessage(),
+          startsWith('Failed to validateKey caused by'));
+    });
+
+    test('atsign does not exist - check trace message', () {
+      final atChainedException = AtChainedException(Intent.shareData,
+          ExceptionScenario.atSignDoesNotExist, 'atsign does not exist');
+      final exceptionStack = AtExceptionStack();
+      exceptionStack.add(atChainedException);
+      expect(exceptionStack.getTraceMessage(), isNotEmpty);
+      expect(exceptionStack.getTraceMessage(),
+          startsWith('Failed to shareData caused by'));
+    });
+
+    test('Decryption failed - check trace message', () {
+      final atChainedException = AtChainedException(Intent.decryptData,
+          ExceptionScenario.decryptionFailed, 'Decryption failed');
+      final exceptionStack = AtExceptionStack();
+      exceptionStack.add(atChainedException);
+      expect(exceptionStack.getTraceMessage(), isNotEmpty);
+      expect(exceptionStack.getTraceMessage(),
+          startsWith('Failed to decryptData caused by'));
+    });
+
+    test('Encryption private key not found - check trace message', () {
+      final atChainedException = AtChainedException(
+          Intent.fetchEncryptionPrivateKey,
+          ExceptionScenario.fetchEncryptionKeys,
+          'Encryption keys not found');
+      final exceptionStack = AtExceptionStack();
+      exceptionStack.add(atChainedException);
+      expect(exceptionStack.getTraceMessage(), isNotEmpty);
+      expect(exceptionStack.getTraceMessage(),
+          startsWith('Failed to fetchEncryptionPrivateKey caused by'));
+    });
+
+    test('Notification failed - check trace message', () {
+      final atChainedException = AtChainedException(
+          Intent.notifyData,
+          ExceptionScenario.secondaryServerNotReachable,
+          'Secondary server not reachable');
+      final exceptionStack = AtExceptionStack();
+      exceptionStack.add(atChainedException);
+      expect(exceptionStack.getTraceMessage(), isNotEmpty);
+      expect(exceptionStack.getTraceMessage(),
+          startsWith('Failed to notifyData caused by'));
+    });
   });
 }