human
Complete the below
@with_setup(prepare_stdout, registry.clear)
def test_xunit_xml_output_with_no_errors():

    ''''Test xunit doc xml output'
    '''

=====
Give me a the Python program you requested?
assistant
#Here is the Python program you requested.
    called = []
    def assert_correct_xml_output(filename, doc):
        called.append(True)
        expect(doc.toxml).when.called.doesnt.throw(UnicodeDecodeError)
    old = xunit_output.write_xml_doc
    xunit_output.write_xml_doc = assert_correct_xml_output
    runner = Runner(feature_name('xunit_unicode_and_bytestring_mixing'), enable_xunit=True)
    try:
        runner.run()
    finally:
        xunit_output.write_xml_doc = old