diff --git a/src/test/python/release_mixin/mock_domain.py b/src/test/python/release_mixin/mock_domain.py
index 1a12ed2..dc676fd 100644
--- a/src/test/python/release_mixin/mock_domain.py
+++ b/src/test/python/release_mixin/mock_domain.py
@@ -35,7 +35,8 @@ class MockRelease():
 
     def validate(self, main_branch):
         self.validate_count += 1
-        return self.is_valid
+        return []
 
     def is_valid(self, main_branch):
-        return True
+        return len(self.validate(main_branch)) < 1
+        
diff --git a/src/test/python/release_mixin/mock_infrastructure_api.py b/src/test/python/release_mixin/mock_infrastructure_api.py
index 843577e..7f84571 100644
--- a/src/test/python/release_mixin/mock_infrastructure_api.py
+++ b/src/test/python/release_mixin/mock_infrastructure_api.py
@@ -32,6 +32,10 @@ class MockGitApi():
     def tag_annotated(self, annotation: str, message: str, count: int):
         self.tag_annotated_count += 1 
         return " "
+    
+    def tag_annotated_second_last(self, annotation: str, message: str):
+        self.tag_annotated(annotation, message, 1)
+        return " "
 
     def get_latest_tag(self):
         return " "