tests.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import contextlib
import io
import logging
import os
import re
import shutil
import subprocess
import sys
import tempfile
import textwrap
import unittest
import warnings
from pathlib import Path
from urllib.parse import urljoin
from urllib.request import pathname2url

import pypandoc


@contextlib.contextmanager
def capture(command, *args, **kwargs):
  err, sys.stderr = sys.stderr, io.StringIO()
  try:
    command(*args, **kwargs)
    sys.stderr.seek(0)
    yield sys.stderr.read()
  finally:
    sys.stderr = err


@contextlib.contextmanager
def closed_tempfile(suffix, text=None, dir_name=None):
    file_name = None
    try:
        if dir_name:
            dir_name = tempfile.mkdtemp(suffix=dir_name)

        with tempfile.NamedTemporaryFile('w+t', suffix=suffix, delete=False, dir=dir_name) as test_file:
            file_name = test_file.name
            if text:
                test_file.write(text)
                test_file.flush()
        yield file_name
    finally:
        if dir_name:
            shutil.rmtree(dir_name, ignore_errors=True)
        elif file_name:
            os.remove(file_name)


# Stolen from pandas
def is_list_like(arg):
    return (hasattr(arg, '__iter__') and
            not isinstance(arg, str))


@contextlib.contextmanager
def assert_produces_warning(expected_warning=Warning, filter_level="always",
                            clear=None, check_stacklevel=True):
    """
    Context manager for running code that expects to raise (or not raise)
    warnings.  Checks that code raises the expected warning and only the
    expected warning. Pass ``False`` or ``None`` to check that it does *not*
    raise a warning. Defaults to ``exception.Warning``, baseclass of all
    Warnings. (basically a wrapper around ``warnings.catch_warnings``).
    >>> import warnings
    >>> with assert_produces_warning():
    ...     warnings.warn(UserWarning())
    ...
    >>> with assert_produces_warning(False):
    ...     warnings.warn(RuntimeWarning())
    ...
    Traceback (most recent call last):
        ...
    AssertionError: Caused unexpected warning(s): ['RuntimeWarning'].
    >>> with assert_produces_warning(UserWarning):
    ...     warnings.warn(RuntimeWarning())
    Traceback (most recent call last):
        ...
    AssertionError: Did not see expected warning of class 'UserWarning'.
    ..warn:: This is *not* thread-safe.
    """
    with warnings.catch_warnings(record=True) as w:

        if clear is not None:
            # make sure that we are clearing these warnings
            # if they have happened before
            # to guarantee that we will catch them
            if not is_list_like(clear):
                clear = [clear]
            for m in clear:
                try:
                    m.__warningregistry__.clear()
                except Exception as e:
                    # ignore...
                    print(str(e))

        saw_warning = False
        warnings.simplefilter(filter_level)
        yield w
        extra_warnings = []

        for actual_warning in w:
            if (expected_warning and issubclass(actual_warning.category,
                                                expected_warning)):
                saw_warning = True

                if check_stacklevel and issubclass(actual_warning.category,
                                                   (FutureWarning,
                                                    DeprecationWarning)):
                    from inspect import getframeinfo, stack
                    caller = getframeinfo(stack()[2][0])
                    msg = (("Warning not set with correct stacklevel. " +
                            "File where warning is raised: {0} != {1}. " +
                            "Warning message: {2}").format(
                        actual_warning.filename, caller.filename,
                        actual_warning.message))
                    assert actual_warning.filename == caller.filename, msg
            else:
                extra_warnings.append(actual_warning.category.__name__)
        if expected_warning:
            assert saw_warning, ("Did not see expected warning of class %r."
                                 % expected_warning.__name__)
        assert not extra_warnings, ("Caused unexpected warning(s): %r."
                                    % extra_warnings)


class TestPypandoc(unittest.TestCase):

    # Python 2 compatibility
    if not hasattr(unittest.TestCase, 'assertRaisesRegex'):
        assertRaisesRegex = unittest.TestCase.assertRaisesRegexp

    def setUp(self):
        if 'HOME' not in os.environ:
            # if this is used with older versions of pandoc-citeproc
            # https://github.com/jgm/pandoc-citeproc/issues/35
            if 'TRAVIS_BUILD_DIR' in os.environ:
                os.environ["HOME"] = os.environ["TRAVIS_BUILD_DIR"]
                print("Using TRAVIS_BUILD_DIR as HOME")
            else:
                os.environ["HOME"] = str(os.getcwd())
                print("Using current dir as HOME")
        print(os.environ["HOME"])

    def test_get_pandoc_formats(self):
        inputs, outputs = pypandoc.get_pandoc_formats()
        self.assertTrue("markdown" in inputs)
        self.assertTrue("json" in inputs)
        self.assertTrue("twiki" in inputs)
        self.assertTrue("markdown" in outputs)

    def test_get_pandoc_version(self):
        assert "HOME" in os.environ, "No HOME set, this will error..."
        version = pypandoc.get_pandoc_version()
        self.assertTrue(isinstance(version, str))
        major = int(version.split(".")[0])
        # according to http://pandoc.org/releases.html there were only two versions 0.x ...
        self.assertTrue(major in [0, 1, 2])

    def test_ensure_pandoc_minimal_version(self):
        assert "HOME" in os.environ, "No HOME set, this will error..."
        assert pypandoc.ensure_pandoc_minimal_version(1) == True
        assert pypandoc.ensure_pandoc_minimal_version(1,1) == True
        assert pypandoc.ensure_pandoc_minimal_version(999,999) == False

    def test_ensure_pandoc_maximal_version(self):
        assert "HOME" in os.environ, "No HOME set, this will error..."
        assert pypandoc.ensure_pandoc_maximal_version(999) == True
        assert pypandoc.ensure_pandoc_maximal_version(999,999) == True
        assert pypandoc.ensure_pandoc_maximal_version(1,1) == False

    def test_converts_valid_format(self):
        self.assertEqualExceptForNewlineEnd(pypandoc.convert_text("ok", format='md', to='rest'), 'ok')

    def test_does_not_convert_to_invalid_format(self):
        def f():
            pypandoc.convert_text("ok", format='md', to='invalid')

        with self.assertRaisesRegex(RuntimeError, "Invalid output format! Got invalid but "):
            f()

    def test_does_not_convert_from_invalid_format(self):
        def f():
            pypandoc.convert_text("ok", format='invalid', to='rest')

        with self.assertRaisesRegex(RuntimeError, 'Invalid input format! Got "invalid" but '):
            f()

    def test_basic_conversion_from_file(self):
        with closed_tempfile('.md', text='# some title\n') as file_name:
            expected = u'some title{0}=========={0}{0}'.format(os.linesep)
            received = pypandoc.convert_file(file_name, 'rst')
            self.assertEqualExceptForNewlineEnd(expected, received)

    def test_basic_conversion_from_multiple_files(self):
        with closed_tempfile('.md', text='some title') as file_name1:
            with closed_tempfile('.md', text='some title') as file_name2:
                expected = '<p>some title</p>\n<p>some title</p>'
                received = pypandoc.convert_file([file_name1,file_name2], 'html')
                self.assertEqualExceptForNewlineEnd(expected, received)

    def test_basic_conversion_from_file_pattern(self):
        received = pypandoc.convert_file("./*.md", 'html')
        received = received.lower()
        assert "making a release" in received
        assert "pypandoc provides a thin wrapper" in received

    def test_basic_conversion_from_file_pattern_with_input_list(self):
        received = pypandoc.convert_file(["./*.md", "./*.md"], 'html')
        received = received.lower()
        assert "making a release" in received
        assert "pypandoc provides a thin wrapper" in received

    @unittest.skipIf(sys.platform.startswith("win"), "File based urls do not work on windows: "
                                                     "https://github.com/jgm/pandoc/issues/4613")
    def test_basic_conversion_from_file_url(self):
        with closed_tempfile('.md', text='# some title\n') as file_name:
            expected = u'some title{0}=========={0}{0}'.format(os.linesep)
            # this keeps the : (which should be '|' on windows but pandoc
            # doesn't like it

            # from http://stackoverflow.com/questions/11687478/convert-a-filename-to-a-file-url
            file_url = urljoin('file:', pathname2url(file_name))
            assert pypandoc._identify_path(file_url)

            received = pypandoc.convert_file(file_url, 'rst')
            self.assertEqualExceptForNewlineEnd(expected, received)

    def test_basic_conversion_from_http_url(self):
        url = 'https://raw.githubusercontent.com/bebraw/pypandoc/master/README.md'
        received = pypandoc.convert_file(url, 'html')
        assert "GPL2 license" in received

    def test_convert_with_custom_writer(self):
        lua_file_content = self.create_sample_lua()
        with closed_tempfile('.md', text='# title\n') as file_name:
            with closed_tempfile('.lua', text=lua_file_content, dir_name="foo-bar+baz") as lua_file_name:
                expected = u'<h1 id="title">title</h1>{0}'.format(os.linesep)
                received = pypandoc.convert_file(file_name, lua_file_name)
                self.assertEqualExceptForNewlineEnd(expected, received)

    def test_basic_conversion_from_file_with_format(self):
        with closed_tempfile('.md', text='# some title\n') as file_name:
            expected = u'some title{0}=========={0}{0}'.format(os.linesep)
            received = pypandoc.convert_file(file_name, 'rst', format='md')
            self.assertEqualExceptForNewlineEnd(expected, received)

            received = pypandoc.convert_file(file_name, 'rst', format='md')
            self.assertEqualExceptForNewlineEnd(expected, received)

    def test_basic_conversion_from_string(self):
        expected = u'some title{0}=========={0}{0}'.format(os.linesep)
        received = pypandoc.convert_text('# some title', 'rst', format='md')
        self.assertEqualExceptForNewlineEnd(expected, received)

        expected = u'some title{0}=========={0}{0}'.format(os.linesep)
        received = pypandoc.convert_text('# some title', 'rst', format='md')
        self.assertEqualExceptForNewlineEnd(expected, received)

    def test_conversion_with_markdown_extensions(self):
        input = '<s>strike</s>'
        expected_with_extension = u'~~strike~~'
        expected_without_extension = u'<s>strike</s>'
        received_with_extension = pypandoc.convert_text(input, 'markdown+strikeout',
                                                   format='html')
        received_without_extension = pypandoc.convert_text(input,
                                                      'markdown-strikeout',
                                                      format='html')
        self.assertEqualExceptForNewlineEnd(expected_with_extension, received_with_extension)
        self.assertEqualExceptForNewlineEnd(expected_without_extension, received_without_extension)

    def test_conversion_from_markdown_with_extensions(self):
        # Apparently without the extension, ~~ gets turned into different code
        # depending on the pandoc version. So we do not test for that anymore...
        input = u'~~strike~~'
        expected_with_extension = u'<p><del>strike</del></p>'
        received_with_extension = pypandoc.convert_text(input, 'html', format=u'markdown+strikeout')
        self.assertEqualExceptForNewlineEnd(expected_with_extension, received_with_extension)

    def test_basic_conversion_to_file(self):
        with closed_tempfile('.rst', ) as file_name:
            expected = u'some title{0}=========={0}{0}'.format(os.linesep)
            received = pypandoc.convert_text('# some title\n', to='rst', format='md', outputfile=file_name)
            self.assertEqualExceptForNewlineEnd("", received)
            with io.open(file_name) as f:
                written = f.read()
            self.assertEqualExceptForNewlineEnd(expected, written)

        # to odf does not work without a file
        def f():
            pypandoc.convert_text('# some title\n', to='odf', format='md',
                             outputfile=None)

        with self.assertRaisesRegex(RuntimeError, "Invalid output format! Got odf but "):
            f()

    def test_conversion_with_empty_filter(self):
        # we just want to get a temp file name, where we can write to
        filters = ''
        written = pypandoc.convert_file('./filter_test.md', to='html', format='md',
                                   outputfile=None, filters=filters)
        import re as re
        # This should not use the pandoc-citeproc module and will not find the
        # strings
        found = re.search(r'Fenner', written)
        self.assertTrue(found is None)
        found = re.search(r'10.1038', written)
        self.assertTrue(found is None)

    def test_conversion_with_python_filter(self):
        markdown_source = "**Here comes the content.**"
        python_source = '''\
        #!{0}

        """
        Pandoc filter to convert all regular text to uppercase.
        Code, link URLs, etc. are not affected.
        """

        from pandocfilters import toJSONFilter, Str

        def caps(key, value, format, meta):
            if key == 'Str':
                return Str(value.upper())

        if __name__ == "__main__":
            toJSONFilter(caps)
        '''
        python_source = textwrap.dedent(python_source)
        python_source.format(sys.executable)
        
        with closed_tempfile(".py", python_source) as tempfile:
            output = pypandoc.convert_text(
                markdown_source, to='html', format='md', outputfile=None, filters=tempfile
            ).strip()
            expected = '<p><strong>HERE COMES THE CONTENT.</strong></p>'
            self.assertTrue(output == expected)

    def test_conversion_with_lua_filter(self):
        markdown_source = "**Here comes the content.**"
        lua_source = """\
        -- taken from: https://pandoc.org/lua-filters.html
        function Strong(elem)
            return pandoc.SmallCaps(elem.c)
        end
        """
        lua_source = textwrap.dedent(lua_source)
        with closed_tempfile(".lua", lua_source) as tempfile:
            output = pypandoc.convert_text(
                markdown_source, to='html', format='md', outputfile=None, filters=tempfile
            ).strip()
            expected = '<p><span class="smallcaps">Here comes the content.</span></p>'
            self.assertTrue(output == expected)

    def test_conversion_with_mixed_filters(self):
        markdown_source = "-0-"

        lua = """\
        function Para(elem)
            return pandoc.Para(elem.content .. {{"{0}-"}})
        end
        """
        lua = textwrap.dedent(lua)

        python = """\
        #!{0}

        from pandocfilters import toJSONFilter, Para, Str

        def func(key, value, format, meta):
            if key == "Para":
                return Para(value + [Str("{0}-")])

        if __name__ == "__main__":
            toJSONFilter(func)
        
        """
        python = textwrap.dedent(python)
        python.format(sys.executable)

        with closed_tempfile(".lua", lua.format(1)) as temp1, closed_tempfile(".py", python.format(2)) as temp2:
            with closed_tempfile(".lua", lua.format(3)) as temp3, closed_tempfile(".py", python.format(4)) as temp4:
                output = pypandoc.convert_text(
                    markdown_source, to="html", format="md", outputfile=None, filters=[temp1, temp2, temp3, temp4]
                ).strip()
                expected = "<p>-0-1-2-3-4-</p>"
                self.assertTrue(output == expected)

                output = pypandoc.convert_text(
                    markdown_source, to="html", format="md", outputfile=None, filters=[temp3, temp1, temp4, temp2]
                ).strip()
                expected = "<p>-0-3-1-4-2-</p>"
                self.assertTrue(output == expected)

    def test_classify_pandoc_logging(self):
        
        test = ("[WARNING] This is some message on\ntwo lines\n"
                "[ERROR] This is a second message.")
        
        expected_levels = [30, 40]
        expected_msgs = ["This is some message on\ntwo lines",
                         "This is a second message."]
        
        for i, (l, m) in enumerate(pypandoc._classify_pandoc_logging(test)):
            self.assertEqual(expected_levels[i], l)
            self.assertEqual(expected_msgs[i], m)


    def test_classify_pandoc_logging_default(self):
        
        test = ("This is some message on\ntwo lines\n"
                "[ERROR] This is a second message.")
        expected_levels = [30, 40]
        expected_msgs = ["This is some message on\ntwo lines",
                         "This is a second message."]
        
        for i, (l, m) in enumerate(pypandoc._classify_pandoc_logging(test)):
            self.assertEqual(expected_levels[i], l)
            self.assertEqual(expected_msgs[i], m)


    def test_classify_pandoc_logging_invalid_level(self):
        
        test = ("[WARN] This is some message on\ntwo lines\n"
                "[ERR] This is a second message.\n"
                "[ERROR] This is a third message.")
        expected_levels = [30, 30, 40]
        expected_msgs = ["This is some message on\ntwo lines",
                         "This is a second message.",
                         "This is a third message."]
        
        for i, (l, m) in enumerate(pypandoc._classify_pandoc_logging(test)):
            self.assertEqual(expected_levels[i], l)
            self.assertEqual(expected_msgs[i], m)


    def test_conversion_stderr(self):
        
        # Clear logger handlers
        logger = logging.getLogger("pypandoc")
        logger.handlers = []
        
        with closed_tempfile('.docx') as file_name:
            text = ('![Mock](missing.png)\n'
                    '![Mock](missing.png)\n')
            with capture(pypandoc.convert_text,
                         text,
                         to='docx',
                         format='md',
                         outputfile=file_name) as output:
                output = re.sub(r'\r', '', output)
                output = output.replace("'missing.png'",
                                        "missing.png")
                expected = (u'[WARNING] Could not fetch resource '
                            u'missing.png: PandocResourceNotFound '
                            u'"missing.png"\n'
                            u'[WARNING] Could not fetch resource '
                            u'missing.png: PandocResourceNotFound '
                            u'"missing.png"\n\n')
                self.assertEqual(expected, output)


    def test_conversion_stderr_nullhandler(self):
        
        # Replace any logging handlers with a null handler
        logger = logging.getLogger("pypandoc")
        logger.handlers = [logging.NullHandler()]
        
        with closed_tempfile('.docx') as file_name:
            text = ('![Mock](missing.png)\n'
                    '![Mock](missing.png)\n')
            with capture(pypandoc.convert_text,
                         text,
                         to='docx',
                         format='md',
                         outputfile=file_name) as output:
                self.assertFalse(output)


    def test_conversion_error(self):
        # pandoc dies on wrong commandline arguments
        def f():
            pypandoc.convert_text('<h1>Primary Heading</h1>', 'md', format='html', extra_args=["--blah"])

        with self.assertRaisesRegex(RuntimeError, 'Pandoc died with exitcode "6" during conversion: Unknown option --blah'):
            f()

    def test_unicode_input(self):
        # make sure that pandoc always returns unicode and does not mishandle it
        expected = u'üäöîôû{0}'.format(os.linesep)
        written = pypandoc.convert_text(u'<p>üäöîôû</p>', 'md', format='html')
        self.assertTrue(isinstance(written, str))
        self.assertEqualExceptForNewlineEnd(expected, written)
        bytes = u'<p>üäöîôû</p>'.encode("utf-8")
        written = pypandoc.convert_text(bytes, 'md', format='html')
        self.assertTrue(expected == written)
        self.assertTrue(isinstance(written, str))

        # Only use german umlauts in the next test, as iso-8859-15 covers that
        expected = u'äüäö{0}'.format(os.linesep)
        bytes = u'<p>äüäö</p>'.encode("iso-8859-15")

        # Without encoding, this fails as we expect utf-8 per default

        def f():
            written = pypandoc.convert_text(bytes, 'md', format='html')

            assert expected != written

        def f():
            # we have to use something which interprets '\xa4', so latin and -1 does not work :-/
            written = pypandoc.convert_text(bytes, 'md', format='html', encoding="utf-16")

            assert expected != written
        # with the right encoding it should work...
        written = pypandoc.convert_text(bytes, 'md', format='html', encoding="iso-8859-15")
        self.assertEqualExceptForNewlineEnd(expected, written)
        self.assertTrue(isinstance(written, str))

    def test_conversion_from_non_plain_text_file(self):
        with closed_tempfile('.docx') as file_name:
            expected = u'some title{0}=========={0}{0}'.format(os.linesep)
            # let's just test conversion (to and) from docx, testing e.g. odt
            # as well would really be testing pandoc rather than pypandoc
            received = pypandoc.convert_text('# some title\n', to='docx', format='md', outputfile=file_name)
            self.assertEqualExceptForNewlineEnd("", received)
            received = pypandoc.convert_file(file_name, to='rst')
            self.assertEqualExceptForNewlineEnd(expected, received)

    def test_pdf_conversion(self):
        with closed_tempfile('.pdf') as file_name:
            ret = pypandoc.convert_text('# some title\n', to='pdf', format='md', outputfile=file_name)
            assert ret == ""
            with io.open(file_name, mode='rb') as f:
                written = f.read()
            assert written[:4] == b"%PDF"
            # TODO: find a test for the content?

        def f():
            # needs an outputfile
            pypandoc.convert_text('# some title\n', to='pdf', format='md')

        with self.assertRaisesRegex(RuntimeError, "Output to pdf only works by using a outputfile"):
            f()

        # outputfile needs to end in pdf
        with closed_tempfile('.WRONG') as file_name:
            def f():
                pypandoc.convert_text('# some title\n', to='pdf', format='md', outputfile=file_name)

            with self.assertRaisesRegex(RuntimeError, 'PDF output needs an outputfile with ".pdf" as a fileending'):
                f()

        # no extensions allowed
        with closed_tempfile('.pdf') as file_name:
            def f():
                pypandoc.convert_text('# some title\n', to='pdf+somethign', format='md', outputfile=file_name)

            with self.assertRaisesRegex(RuntimeError, r"PDF output can't contain any extensions: pdf\+somethign"):
                f()

    def test_get_pandoc_path(self):
        result = pypandoc.get_pandoc_path()
        assert "pandoc" in result

    def test_call_with_nonexisting_file(self):
        files = ['/file/does/not/exists.md',
                 'file:///file/does/not/exists.md'
                 '',
                 42,
                 None
                 ]

        def f(filepath):
            pypandoc.convert_file(filepath, 'rst')

        for filepath in files:
            with self.assertRaisesRegex(RuntimeError, "source_file is not a valid path"):
                f(filepath)

    def test_convert_text_with_existing_file(self):
        with closed_tempfile('.md', text='# some title\n') as file_name:
            received = pypandoc.convert_text(file_name, 'rst', format='md')
            self.assertTrue("title" not in received)

            # The following is a problematic case
            received = pypandoc.convert_file(file_name, 'rst', format='md')
            self.assertTrue("title" in received)

    def create_sample_lua(self):
        args = [pypandoc.get_pandoc_path(), '--print-default-data-file', 'sample.lua']
        p = subprocess.Popen(args, stdout=subprocess.PIPE)
        out, err = p.communicate()
        return out.decode('utf-8')

    def test_basic_conversion_from_file_pathlib(self):
        with closed_tempfile('.md', text='# some title\n') as file_name:
            expected = u'some title{0}=========={0}{0}'.format(os.linesep)
            received_from_str_filename_input = pypandoc.convert_file(file_name, 'rst')
            received_from_path_filename_input = pypandoc.convert_file(Path(file_name), 'rst')
            self.assertEqualExceptForNewlineEnd(expected, received_from_str_filename_input)
            self.assertEqualExceptForNewlineEnd(expected, received_from_path_filename_input)

    def test_basic_conversion_from_multiple_files_pathlib(self):
        with closed_tempfile('.md', text='some title') as file_name1:
            with closed_tempfile('.md', text='some title') as file_name2:
                expected = '<p>some title</p>\n<p>some title</p>'
                received_from_str_filename_input = pypandoc.convert_file([file_name1, file_name2], 'html')
                received_from_path_filename_input = pypandoc.convert_file([Path(file_name1), Path(file_name2)], 'html')
                self.assertEqualExceptForNewlineEnd(expected, received_from_str_filename_input)
                self.assertEqualExceptForNewlineEnd(expected, received_from_path_filename_input)

    def test_basic_conversion_from_file_pattern_pathlib_glob(self):
        received_from_str_filename_input = pypandoc.convert_file("./*.md", 'html').lower()
        received_from_path_filename_input = pypandoc.convert_file(Path(".").glob("*.md"), 'html').lower()
        assert received_from_str_filename_input == received_from_path_filename_input

    def test_basic_conversion_from_file_pattern_with_input_list_pathlib_glob(self):
        received_from_str_filename_input = pypandoc.convert_file(["./*.md", "./*.md"], 'html').lower()
        received_from_path_filename_input = pypandoc.convert_file([*Path(".").glob("*.md"), *Path(".").glob("*.md")],
                                                                  'html').lower()
        assert received_from_str_filename_input == received_from_path_filename_input

    def test_basic_conversion_to_pathlib_file(self):
        with closed_tempfile('.rst', ) as file_name:
            expected = u'some title{0}=========={0}{0}'.format(os.linesep)
            received = pypandoc.convert_text('# some title\n', to='rst', format='md', outputfile=Path(file_name))
            self.assertEqualExceptForNewlineEnd("", received)
            with io.open(file_name) as f:
                written = f.read()
            self.assertEqualExceptForNewlineEnd(expected, written)

    def assertEqualExceptForNewlineEnd(self, expected, received):  # noqa
        # output written to a file does not seem to have os.linesep
        # handle everything here by replacing the os linesep by a simple \n
        expected = expected.replace(os.linesep, "\n")
        received = received.replace(os.linesep, "\n")
        self.assertEqual(expected.rstrip('\n'), received.rstrip('\n'))


if __name__ == '__main__':
    suite = unittest.TestLoader().loadTestsFromTestCase(TestPypandoc)
    ret = unittest.TextTestRunner(verbosity=2).run(suite)
    sys.exit(0 if ret.wasSuccessful() else 1)