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import os
import markdown
import codecs
import difflib
import warnings
try:
import nose
except ImportError as e:
msg = e.args[0]
msg = msg + ". The nose testing framework is required to run the Python-" \
"Markdown tests. Run `pip install nose` to install the latest version."
e.args = (msg,) + e.args[1:]
raise
from .plugins import HtmlOutput, Markdown, MarkdownSyntaxError
try:
import tidylib
except ImportError:
tidylib = None
try:
import yaml
except ImportError as e:
msg = e.args[0]
msg = msg + ". A YAML library is required to run the Python-Markdown " \
"tests. Run `pip install pyyaml` to install the latest version."
e.args = (msg,) + e.args[1:]
raise
test_dir = os.path.abspath(os.path.dirname(__file__))
class YamlConfig():
def __init__(self, defaults, filename):
""" Set defaults and load config file if it exists. """
self.DEFAULT_SECTION = 'DEFAULT'
self._defaults = defaults
self._config = {}
if os.path.exists(filename):
with codecs.open(filename, encoding="utf-8") as f:
self._config = yaml.load(f)
def get(self, section, option):
""" Get config value for given section and option key. """
if section in self._config and option in self._config[section]:
return self._config[section][option]
return self._defaults[option]
def get_section(self, file):
""" Get name of config section for given file. """
filename = os.path.basename(file)
if filename in self._config:
return filename
else:
return self.DEFAULT_SECTION
def get_args(self, file):
""" Get args to pass to markdown from config for a given file. """
args = {}
section = self.get_section(file)
if section in self._config:
for key in self._config[section].keys():
# Filter out args unique to testing framework
if key not in self._defaults.keys():
args[key] = self.get(section, key)
return args
def get_config(dir_name):
""" Get config for given directory name. """
defaults = {
'normalize': False,
'skip': False,
'input_ext': '.txt',
'output_ext': '.html'
}
config = YamlConfig(defaults, os.path.join(dir_name, 'test.cfg'))
return config
def normalize(text):
""" Normalize whitespace for a string of html using tidylib. """
output, errors = tidylib.tidy_fragment(text, options={
'drop_empty_paras': 0,
'fix_backslash': 0,
'fix_bad_comments': 0,
'fix_uri': 0,
'join_styles': 0,
'lower_literals': 0,
'merge_divs': 0,
'output_xhtml': 1,
'quote_ampersand': 0,
'newline': 'LF'
})
return output
class CheckSyntax(object):
def __init__(self, description=None):
if description:
self.description = 'TestSyntax: "%s"' % description
def __call__(self, file, config):
""" Compare expected output to actual output and report result. """
cfg_section = config.get_section(file)
if config.get(cfg_section, 'skip'):
raise nose.plugins.skip.SkipTest('Test skipped per config.')
input_file = file + config.get(cfg_section, 'input_ext')
with codecs.open(input_file, encoding="utf-8") as f:
input = f.read()
output_file = file + config.get(cfg_section, 'output_ext')
with codecs.open(output_file, encoding="utf-8") as f:
# Normalize line endings
# (on windows, git may have altered line endings).
expected_output = f.read().replace("\r\n", "\n")
output = markdown.markdown(input, **config.get_args(file))
if tidylib and config.get(cfg_section, 'normalize'):
# Normalize whitespace with tidylib before comparing.
expected_output = normalize(expected_output)
output = normalize(output)
elif config.get(cfg_section, 'normalize'):
# Tidylib is not available. Skip this test.
raise nose.plugins.skip.SkipTest(
'Test skipped. Tidylib not available on system.'
)
diff = [l for l in difflib.unified_diff(
expected_output.splitlines(True),
output.splitlines(True),
output_file,
'actual_output.html',
n=3
)]
if diff:
raise MarkdownSyntaxError(
'Output from "%s" failed to match expected '
'output.\n\n%s' % (input_file, ''.join(diff))
)
def TestSyntax():
for dir_name, sub_dirs, files in os.walk(test_dir):
# Get dir specific config settings.
config = get_config(dir_name)
# Loop through files and generate tests.
for file in files:
root, ext = os.path.splitext(file)
if ext == config.get(config.get_section(file), 'input_ext'):
path = os.path.join(dir_name, root)
check_syntax = CheckSyntax(
description=os.path.relpath(path, test_dir)
)
yield check_syntax, path, config
def generate(file, config):
""" Write expected output file for given input. """
cfg_section = config.get_section(file)
if config.get(cfg_section, 'skip') or config.get(cfg_section, 'normalize'):
print('Skipping:', file)
return None
input_file = file + config.get(cfg_section, 'input_ext')
output_file = file + config.get(cfg_section, 'output_ext')
if not os.path.isfile(output_file) or \
os.path.getmtime(output_file) < os.path.getmtime(input_file):
print('Generating:', file)
markdown.markdownFromFile(input=input_file, output=output_file,
encoding='utf-8', **config.get_args(file))
else:
print('Already up-to-date:', file)
def generate_all():
""" Generate expected output for all outdated tests. """
for dir_name, sub_dirs, files in os.walk(test_dir):
# Get dir specific config settings.
config = get_config(dir_name)
# Loop through files and generate tests.
for file in files:
root, ext = os.path.splitext(file)
if ext == config.get(config.get_section(file), 'input_ext'):
generate(os.path.join(dir_name, root), config)
def run():
# Warnings should cause tests to fail...
warnings.simplefilter('error')
# Except for the warnings that shouldn't
warnings.filterwarnings('default', category=PendingDeprecationWarning)
warnings.filterwarnings('default', category=DeprecationWarning, module='markdown')
nose.main(addplugins=[HtmlOutput(), Markdown()])
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