Method test_flush_no_tool

testUpdateHostsFile.py:1459–1469

(self, _)

    @mock.patch("os.path.isfile", return_value=False)
    def test_flush_no_tool(self, _):
        with self.mock_property("platform.system") as obj:
            obj.return_value = "Linux"

            with self.mock_property("os.name"):
                os.name = "posix"
                flush_dns_cache()

                expected = "Unable to determine DNS management tool."
                output = sys.stdout.getvalue()
                self.assertIn(expected, output)

    @mock.patch("os.path.isfile", side_effect=[True] + [False] * 11)
    @mock.patch("subprocess.call", return_value=0)