test.py

    @unittest.skipIf(filesystem.POSIX_MODE, reason='Test specific to Windows')
    def test_foreign_webconfig_multiple_domains(self):
        # Covers bug https://github.com/certbot/certbot/issues/9091
        achall_2 = achallenges.KeyAuthorizationAnnotatedChallenge(
            challb=acme_util.chall_to_challb(challenges.HTTP01(token=b"bingo"), "pending"),
            domain="second-thing.com", account_key=KEY)
        self.config.webroot_map["second-thing.com"] = self.path

        challenge_path = os.path.join(self.path, ".well-known", "acme-challenge")
        filesystem.makedirs(challenge_path)

        webconfig_path = os.path.join(challenge_path, "web.config")
        with open(webconfig_path, "w") as file:
            file.write("something")
        self.auth.perform([self.achall, achall_2])