Special-case TypedDict DeprecationWarning

Author: dmtucker

tests/test_pytest_mypy.py

@@ -81,6 +81,12 @@ def test_mypy_encoding_warnings(testdir, monkeypatch):
     mypy_status_check = 1
     mypy_checks = mypy_file_checks + mypy_status_check
     expected_warnings = 2  # https://github.com/python/mypy/issues/14603
+    if MYPY_VERSION < Version("1.5"):
+        # DeprecationWarning: mypy_extensions.TypedDict is deprecated,
+        # and will be removed in a future version.
+        # Use typing.TypedDict or typing_extensions.TypedDict instead.
+        # https://github.com/python/mypy/pull/15494
+        expected_warnings += 1
     result.assert_outcomes(passed=mypy_checks, warnings=expected_warnings)