Method test_stderr_fileobj

Lib/test/test_subprocess.py:619–628

(self)

        self.assertEqual(os.read(d, 1024), b"strawberry")

    def test_stderr_fileobj(self):
        # stderr is set to open file object
        tf = tempfile.TemporaryFile()
        self.addCleanup(tf.close)
        p = subprocess.Popen([sys.executable, "-c",
                          'import sys; sys.stderr.write("strawberry")'],
                         stderr=tf)
        p.wait()
        tf.seek(0)
        self.assertEqual(tf.read(), b"strawberry")

    def test_stderr_redirect_with_no_stdout_redirect(self):
        # test stderr=STDOUT while stdout=None (not set)