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# -*- coding: utf-8 -*-
"""
Pygments tests with example files
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
:copyright: Copyright 2006-2013 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import os
import pprint
import difflib
import cPickle as pickle
from pygments.lexers import get_lexer_for_filename, get_lexer_by_name
from pygments.token import Error
from pygments.util import ClassNotFound, b
STORE_OUTPUT = False
# generate methods
def test_example_files():
testdir = os.path.dirname(__file__)
outdir = os.path.join(testdir, 'examplefiles', 'output')
if STORE_OUTPUT and not os.path.isdir(outdir):
os.makedirs(outdir)
for fn in os.listdir(os.path.join(testdir, 'examplefiles')):
if fn.startswith('.') or fn.endswith('#'):
continue
absfn = os.path.join(testdir, 'examplefiles', fn)
if not os.path.isfile(absfn):
continue
outfn = os.path.join(outdir, fn)
try:
lx = get_lexer_for_filename(absfn)
except ClassNotFound:
if "_" not in fn:
raise AssertionError('file %r has no registered extension, '
'nor is of the form <lexer>_filename '
'for overriding, thus no lexer found.'
% fn)
try:
name, rest = fn.split("_", 1)
lx = get_lexer_by_name(name)
except ClassNotFound:
raise AssertionError('no lexer found for file %r' % fn)
yield check_lexer, lx, absfn, outfn
def check_lexer(lx, absfn, outfn):
fp = open(absfn, 'rb')
try:
text = fp.read()
finally:
fp.close()
text = text.replace(b('\r\n'), b('\n'))
text = text.strip(b('\n')) + b('\n')
try:
text = text.decode('utf-8')
if text.startswith(u'\ufeff'):
text = text[len(u'\ufeff'):]
except UnicodeError:
text = text.decode('latin1')
ntext = []
tokens = []
for type, val in lx.get_tokens(text):
ntext.append(val)
assert type != Error, \
'lexer %s generated error token for %s: %r at position %d' % \
(lx, absfn, val, len(u''.join(ntext)))
tokens.append((type, val))
if u''.join(ntext) != text:
print '\n'.join(difflib.unified_diff(u''.join(ntext).splitlines(),
text.splitlines()))
raise AssertionError('round trip failed for ' + absfn)
# check output against previous run if enabled
if STORE_OUTPUT:
# no previous output -- store it
if not os.path.isfile(outfn):
fp = open(outfn, 'wb')
try:
pickle.dump(tokens, fp)
finally:
fp.close()
return
# otherwise load it and compare
fp = open(outfn, 'rb')
try:
stored_tokens = pickle.load(fp)
finally:
fp.close()
if stored_tokens != tokens:
f1 = pprint.pformat(stored_tokens)
f2 = pprint.pformat(tokens)
print '\n'.join(difflib.unified_diff(f1.splitlines(),
f2.splitlines()))
assert False, absfn
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