Add unit test for allow_return_at_top_level option

Author: jaepil

tests/expressions/test_interpreter_stmt_return.py

@@ -0,0 +1,26 @@
+#
+# Monic Framework
+#
+# Copyright (c) 2024-2025 Cognica, Inc.
+#
+
+from monic.expressions import (
+    ExpressionsContext,
+    ExpressionsParser,
+    ExpressionsInterpreter,
+)
+
+
+def test_return_at_top_level():
+    """Test return statement at the top level."""
+    parser = ExpressionsParser()
+    context = ExpressionsContext(allow_return_at_top_level=True)
+    interpreter = ExpressionsInterpreter(context)
+
+    code = """
+        return 1
+    """
+    tree = parser.parse(code)
+
+    result = interpreter.execute(tree)
+    assert result == 1