Method test_pep_765_warning

Lib/test/test_pyrepl/test_interact.py:280–301

Test that a SyntaxWarning emitted from the AST optimizer is only shown once in the REPL.

(self)

class TestWarnings(unittest.TestCase):
    def test_pep_765_warning(self):
        """
        Test that a SyntaxWarning emitted from the
        AST optimizer is only shown once in the REPL.
        """
        # gh-131927
        console = InteractiveColoredConsole()
        code = dedent("""\
        def f():
            try:
                return 1
            finally:
                return 2
        """)

        with warnings.catch_warnings(record=True) as caught:
            warnings.simplefilter("always")
            console.runsource(code)

        count = sum("'return' in a 'finally' block" in str(w.message)
                    for w in caught)
        self.assertEqual(count, 1)