1 files changed, 9 insertions, 1 deletions
diff --git a/testsuite/pyunit/dom/Expressions.py b/testsuite/pyunit/dom/Expressions.py
index 113e541ac..4b2e47507 100644
--- a/testsuite/pyunit/dom/Expressions.py
+++ b/testsuite/pyunit/dom/Expressions.py
@@ -34,6 +34,7 @@ import ctypes
 from inspect import currentframe
 from pathlib import Path
 from textwrap import dedent
+from typing import TypeVar, Dict
 from unittest import TestCase
 
 
@@ -51,6 +52,13 @@ if __name__ == "__main__":
     exit(1)
 
 
+_DictKey = TypeVar("_DictKey")
+_DictValue = TypeVar("_DictValue")
+
+def firstValue(d: Dict[_DictKey, _DictValue]) -> _DictValue:
+    return next(iter(d.values()))
+
+
 class Expressions(TestCase):
     _root = Path(__file__).resolve().parent.parent
     _design = Design()
@@ -69,7 +77,7 @@ class Expressions(TestCase):
         self._design.Documents.append(document)
 
         # Traverse already to default value expression
-        package: Package = document.Packages[0]
+        package: Package = firstValue(document.Packages)
         item: Constant = package.DeclaredItems[0]
         default: Expression = item.DefaultExpression