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PYTHON-5727 Add tests for __main__ blocks #2936

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PYTHON-5727 Add tests for __main__ blocks #2936

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26 changes: 26 additions & 0 deletions test/test_uri_parser.py
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@
from __future__ import annotations

import copy
import subprocess
import sys
import warnings
from typing import Any
Expand Down Expand Up @@ -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()
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