From f0d56651fbc04903fb7bf5a364e2eef7d3fb558c Mon Sep 17 00:00:00 2001
From: Jeffrey 'Alex' Clark <aclark@aclark.net>
Date: Tue, 14 Jul 2026 12:40:13 -0400
Subject: [PATCH 1/3] PYTHON-5727 Add test for uri_parser __main__ block

---
 test/test_uri_parser.py | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

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()

From 92f43310f7b00666c5ee6e28d53a7141dd2127de Mon Sep 17 00:00:00 2001
From: Jeffrey 'Alex' Clark <aclark@aclark.net>
Date: Wed, 22 Jul 2026 12:47:15 -0400
Subject: [PATCH 2/3] PYTHON-5727 Strengthen valid-URI assertions with
 assertRegex

---
 test/test_uri_parser.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/test/test_uri_parser.py b/test/test_uri_parser.py
index 3fdc0f9779..531373677c 100644
--- a/test/test_uri_parser.py
+++ b/test/test_uri_parser.py
@@ -706,8 +706,9 @@ def test_valid_uri_prints_parsed_dict(self):
             timeout=15,
         )
         self.assertEqual(0, result.returncode)
-        self.assertIn("localhost", result.stdout)
-        self.assertIn("mydb", result.stdout)
+        # Assert on the pretty-printed dict structure, not bare substrings.
+        self.assertRegex(result.stdout, r"'database': 'mydb'")
+        self.assertRegex(result.stdout, r"'nodelist': \[\('localhost', 27017\)\]")
 
     def test_invalid_uri_prints_error(self):
         # An invalid URI is caught and its message printed, still exiting 0.

From 4992f9fea96bfe396c66c679a1a1ae5ab7ece023 Mon Sep 17 00:00:00 2001
From: Jeffrey 'Alex' Clark <aclark@aclark.net>
Date: Wed, 22 Jul 2026 12:56:08 -0400
Subject: [PATCH 3/3] PYTHON-5727 Parse __main__ output as literal instead of
 regex-matching

---
 test/test_uri_parser.py | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/test/test_uri_parser.py b/test/test_uri_parser.py
index 531373677c..c16d28b08f 100644
--- a/test/test_uri_parser.py
+++ b/test/test_uri_parser.py
@@ -16,6 +16,7 @@
 
 from __future__ import annotations
 
+import ast
 import copy
 import subprocess
 import sys
@@ -706,9 +707,11 @@ def test_valid_uri_prints_parsed_dict(self):
             timeout=15,
         )
         self.assertEqual(0, result.returncode)
-        # Assert on the pretty-printed dict structure, not bare substrings.
-        self.assertRegex(result.stdout, r"'database': 'mydb'")
-        self.assertRegex(result.stdout, r"'nodelist': \[\('localhost', 27017\)\]")
+        # The output is a valid Python literal; parse it and assert on values
+        # rather than the formatting of the pretty-printed text.
+        parsed = ast.literal_eval(result.stdout)
+        self.assertEqual("mydb", parsed["database"])
+        self.assertEqual([("localhost", 27017)], parsed["nodelist"])
 
     def test_invalid_uri_prints_error(self):
         # An invalid URI is caught and its message printed, still exiting 0.