test: ignore a SyntaxWarning caused by one of our tests

Author: nedbat

tests/conftest.py

@@ -60,6 +60,9 @@ def set_warnings() -> None:
 
     warnings.filterwarnings("ignore", r".*no-sysmon")
 
+    # We have a test that has a return in a finally: test_bug_1891.
+    warnings.filterwarnings("ignore", "'return' in a 'finally' block", category=SyntaxWarning)
+
 
 @pytest.fixture(autouse=True)
 def reset_sys_path() -> Iterator[None]:

tests/test_parser.py

@@ -207,6 +207,8 @@ def test_bug_1891(self) -> None:
             )
             """)
         assert parser.exit_counts() == {1: 1}
+        # In conftest.py, we silence the SyntaxWarning this code causes. If
+        # we remove this code, we can probably remove that warning.
         parser = self.parse_text("""\
             def g2():
                 try: