diff --git a/test/test_uri_parser.py b/test/test_uri_parser.py
index 4fe5cb7a0f..3fdc0f9779 100644
--- a/test/test_uri_parser.py
+++ b/test/test_uri_parser.py
@@ -17,6 +17,7 @@
 from __future__ import annotations
 
 import copy
+import subprocess
 import sys
 import warnings
 from typing import Any
@@ -695,5 +696,30 @@ def test_validate_uri_srv_structure(self):
             )
 
 
+class TestMainBlock(unittest.TestCase):
+    def test_valid_uri_prints_parsed_dict(self):
+        # Run uri_parser.py as a script; a valid URI is pretty-printed.
+        result = subprocess.run(
+            [sys.executable, "-m", "pymongo.uri_parser", "mongodb://localhost:27017/mydb"],
+            capture_output=True,
+            text=True,
+            timeout=15,
+        )
+        self.assertEqual(0, result.returncode)
+        self.assertIn("localhost", result.stdout)
+        self.assertIn("mydb", result.stdout)
+
+    def test_invalid_uri_prints_error(self):
+        # An invalid URI is caught and its message printed, still exiting 0.
+        result = subprocess.run(
+            [sys.executable, "-m", "pymongo.uri_parser", "not-a-valid-uri"],
+            capture_output=True,
+            text=True,
+            timeout=15,
+        )
+        self.assertEqual(0, result.returncode)
+        self.assertIn("Invalid URI scheme", result.stdout)
+
+
 if __name__ == "__main__":
     unittest.main()