How to use the ansi2html.converter.main function in ansi2html

def test_conversion_as_command(self, mock_stdout, mock_argv):
        with open(join(_here, "ansicolor.txt"), "rb") as input:
            test_data = "".join(read_to_unicode(input))

        with open(join(_here, "ansicolor.html"), "rb") as output:
            expected_data = "".join(read_to_unicode(output))

        if six.PY3:
            f = lambda: six.StringIO(test_data)
        else:
            f = lambda: six.StringIO(test_data.encode('utf-8'))

        with patch("sys.stdin", new_callable=f):
            main()

        html = mock_stdout.getvalue()

        self.assertEqual(html, expected_data)

def test_inline_as_command(self, mock_stdout, mock_argv):
        test_input = textwrap.dedent(six.u("""
        this is
        a test
        """))

        with patch("sys.stdin", new_callable=lambda: six.StringIO(test_input)):
            main()

        eq_(mock_stdout.getvalue(), test_input)

def test_partial_as_command(self, mock_stdout, mock_argv):
        rainbow = '\x1b[1m\x1b[40m\x1b[31mr\x1b[32ma\x1b[33mi\x1b[34mn\x1b[35mb\x1b[36mo\x1b[37mw\x1b[0m\n'
        with patch("sys.stdin", new_callable=lambda: six.StringIO(rainbow)):
            main()

        html = mock_stdout.getvalue().strip()

        if hasattr(html, 'decode'):
            html = html.decode('utf-8')

        expected = (six.u('<span class="ansi1"></span>') +
                    six.u('<span class="ansi1 ansi40"></span>') +
                    six.u('<span class="ansi1 ansi31 ansi40">r</span>') +
                    six.u('<span class="ansi1 ansi32 ansi40">a</span>') +
                    six.u('<span class="ansi1 ansi33 ansi40">i</span>') +
                    six.u('<span class="ansi1 ansi34 ansi40">n</span>') +
                    six.u('<span class="ansi1 ansi35 ansi40">b</span>') +
                    six.u('<span class="ansi1 ansi36 ansi40">o</span>') +
                    six.u('<span class="ansi1 ansi37 ansi40">w</span>'))
        assert isinstance(html, six.text_type)