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# -*- coding: utf-8 -*-
"""
Pygments basic API tests
~~~~~~~~~~~~~~~~~~~~~~~~
:copyright: 2006-2007 by Georg Brandl.
:license: BSD, see LICENSE for more details.
"""
import os
import unittest
import StringIO
import random
from pygments import lexers, formatters, filters, format
from pygments.token import _TokenType, Text
from pygments.lexer import RegexLexer
test_content = [chr(i) for i in xrange(33, 128)] * 5
random.shuffle(test_content)
test_content = ''.join(test_content) + '\n'
class LexersTest(unittest.TestCase):
def test_import_all(self):
# instantiate every lexer, to see if the token type defs are correct
for x in lexers.LEXERS.keys():
c = getattr(lexers, x)()
def test_lexer_classes(self):
a = self.assert_
ae = self.assertEquals
# test that every lexer class has the correct public API
for lexer in lexers._iter_lexerclasses():
a(type(lexer.name) is str)
for attr in 'aliases', 'filenames', 'alias_filenames', 'mimetypes':
a(hasattr(lexer, attr))
a(type(getattr(lexer, attr)) is list, "%s: %s attribute wrong" %
(lexer, attr))
result = lexer.analyse_text("abc")
a(isinstance(result, float) and 0.0 <= result <= 1.0)
inst = lexer(opt1="val1", opt2="val2")
if issubclass(lexer, RegexLexer):
if not hasattr(lexer, '_tokens'):
# if there's no "_tokens", the lexer has to be one with
# multiple tokendef variants
a(lexer.token_variants)
for variant in lexer.tokens:
a('root' in lexer.tokens[variant])
else:
a('root' in lexer._tokens, '%s has no root state' % lexer)
tokens = list(inst.get_tokens(test_content))
txt = ""
for token in tokens:
a(isinstance(token, tuple))
a(isinstance(token[0], _TokenType))
if isinstance(token[1], str):
print repr(token[1])
a(isinstance(token[1], unicode))
txt += token[1]
ae(txt, test_content, "%s lexer roundtrip failed: %r != %r" %
(lexer.name, test_content, txt))
def test_get_lexers(self):
a = self.assert_
ae = self.assertEquals
# test that the lexers functions work
for func, args in [(lexers.get_lexer_by_name, ("python",)),
(lexers.get_lexer_for_filename, ("test.py",)),
(lexers.get_lexer_for_mimetype, ("text/x-python",)),
(lexers.guess_lexer, ("#!/usr/bin/python -O\nprint",)),
(lexers.guess_lexer_for_filename, ("a.py", "<%= @foo %>"))
]:
x = func(opt="val", *args)
a(isinstance(x, lexers.PythonLexer))
ae(x.options["opt"], "val")
class FiltersTest(unittest.TestCase):
def test_basic(self):
filter_args = {
'whitespace': {'spaces': True, 'tabs': True, 'newlines': True},
'highlight': {'names': ['isinstance', 'lexers', 'x']},
}
for x in filters.FILTERS.keys():
lx = lexers.PythonLexer()
lx.add_filter(x, **filter_args.get(x, {}))
text = file(os.path.join(testdir, testfile)).read().decode('utf-8')
tokens = list(lx.get_tokens(text))
roundtext = ''.join([t[1] for t in tokens])
if x not in ('whitespace', 'keywordcase'):
# these filters change the text
self.assertEquals(roundtext, text,
"lexer roundtrip with %s filter failed" % x)
def test_raiseonerror(self):
lx = lexers.PythonLexer()
lx.add_filter('raiseonerror', excclass=RuntimeError)
self.assertRaises(RuntimeError, list, lx.get_tokens('$'))
def test_whitespace(self):
lx = lexers.PythonLexer()
lx.add_filter('whitespace', spaces='%')
text = file(os.path.join(testdir, testfile)).read().decode('utf-8')
lxtext = ''.join([t[1] for t in list(lx.get_tokens(text))])
self.failIf(' ' in lxtext)
def test_keywordcase(self):
lx = lexers.PythonLexer()
lx.add_filter('keywordcase', case='capitalize')
text = file(os.path.join(testdir, testfile)).read().decode('utf-8')
lxtext = ''.join([t[1] for t in list(lx.get_tokens(text))])
self.assert_('Def' in lxtext and 'Class' in lxtext)
class FormattersTest(unittest.TestCase):
def test_public_api(self):
a = self.assert_
ae = self.assertEquals
ts = list(lexers.PythonLexer().get_tokens("def f(): pass"))
out = StringIO.StringIO()
# test that every formatter class has the correct public API
for formatter, info in formatters.FORMATTERS.iteritems():
a(len(info) == 4)
a(info[0], "missing formatter name") # name
a(info[1], "missing formatter aliases") # aliases
a(info[3], "missing formatter docstring") # doc
try:
inst = formatter(opt1="val1")
except ImportError:
continue
inst.get_style_defs()
inst.format(ts, out)
def test_encodings(self):
from pygments.formatters import HtmlFormatter
# unicode output
fmt = HtmlFormatter()
tokens = [(Text, u"ä")]
out = format(tokens, fmt)
self.assert_(type(out) is unicode)
self.assert_(u"ä" in out)
# encoding option
fmt = HtmlFormatter(encoding="latin1")
tokens = [(Text, u"ä")]
self.assert_(u"ä".encode("latin1") in format(tokens, fmt))
# encoding and outencoding option
fmt = HtmlFormatter(encoding="latin1", outencoding="utf8")
tokens = [(Text, u"ä")]
self.assert_(u"ä".encode("utf8") in format(tokens, fmt))
def test_styles(self):
from pygments.formatters import HtmlFormatter
fmt = HtmlFormatter(style="pastie")
def test_unicode_handling(self):
# test that the formatter supports encoding and Unicode
tokens = list(lexers.PythonLexer(encoding='utf-8').get_tokens("def f(): 'ä'"))
for formatter, info in formatters.FORMATTERS.iteritems():
try:
inst = formatter(encoding=None)
except ImportError:
# some dependency not installed
continue
out = format(tokens, inst)
if formatter.unicodeoutput:
self.assert_(type(out) is unicode)
inst = formatter(encoding='utf-8')
out = format(tokens, inst)
self.assert_(type(out) is str)
# Cannot test for encoding, since formatters may have to escape
# non-ASCII characters.
def test_get_formatters(self):
a = self.assert_
ae = self.assertEquals
# test that the formatters functions work
x = formatters.get_formatter_by_name("html", opt="val")
a(isinstance(x, formatters.HtmlFormatter))
ae(x.options["opt"], "val")
x = formatters.get_formatter_for_filename("a.html", opt="val")
a(isinstance(x, formatters.HtmlFormatter))
ae(x.options["opt"], "val")
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