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# encoding: utf-8
"""
Unit tests of loader.py.
"""
import os
import sys
import unittest
from pystache.tests.common import AssertStringMixin, DATA_DIR, SetupDefaults
from pystache import defaults
from pystache.loader import Loader
# We use the same directory as the locator tests for now.
LOADER_DATA_DIR = os.path.join(DATA_DIR, 'locator')
class LoaderTests(unittest.TestCase, AssertStringMixin, SetupDefaults):
def setUp(self):
self.setup_defaults()
def tearDown(self):
self.teardown_defaults()
def test_init__extension(self):
loader = Loader(extension='foo')
self.assertEqual(loader.extension, 'foo')
def test_init__extension__default(self):
# Test the default value.
loader = Loader()
self.assertEqual(loader.extension, 'mustache')
def test_init__file_encoding(self):
loader = Loader(file_encoding='bar')
self.assertEqual(loader.file_encoding, 'bar')
def test_init__file_encoding__default(self):
file_encoding = defaults.FILE_ENCODING
try:
defaults.FILE_ENCODING = 'foo'
loader = Loader()
self.assertEqual(loader.file_encoding, 'foo')
finally:
defaults.FILE_ENCODING = file_encoding
def test_init__to_unicode(self):
to_unicode = lambda x: x
loader = Loader(to_unicode=to_unicode)
self.assertEqual(loader.to_unicode, to_unicode)
def test_init__to_unicode__default(self):
loader = Loader()
self.assertRaises(TypeError, loader.to_unicode, u"abc")
decode_errors = defaults.DECODE_ERRORS
string_encoding = defaults.STRING_ENCODING
nonascii = u'abcdé'.encode('utf-8')
loader = Loader()
self.assertRaises(UnicodeDecodeError, loader.to_unicode, nonascii)
defaults.DECODE_ERRORS = 'ignore'
loader = Loader()
self.assertString(loader.to_unicode(nonascii), u'abcd')
defaults.STRING_ENCODING = 'utf-8'
loader = Loader()
self.assertString(loader.to_unicode(nonascii), u'abcdé')
def _get_path(self, filename):
return os.path.join(DATA_DIR, filename)
def test_unicode__basic__input_str(self):
"""
Test unicode(): default arguments with str input.
"""
loader = Loader()
actual = loader.unicode("foo")
self.assertString(actual, u"foo")
def test_unicode__basic__input_unicode(self):
"""
Test unicode(): default arguments with unicode input.
"""
loader = Loader()
actual = loader.unicode(u"foo")
self.assertString(actual, u"foo")
def test_unicode__basic__input_unicode_subclass(self):
"""
Test unicode(): default arguments with unicode-subclass input.
"""
class UnicodeSubclass(unicode):
pass
s = UnicodeSubclass(u"foo")
loader = Loader()
actual = loader.unicode(s)
self.assertString(actual, u"foo")
def test_unicode__to_unicode__attribute(self):
"""
Test unicode(): encoding attribute.
"""
loader = Loader()
non_ascii = u'abcdé'.encode('utf-8')
self.assertRaises(UnicodeDecodeError, loader.unicode, non_ascii)
def to_unicode(s, encoding=None):
if encoding is None:
encoding = 'utf-8'
return unicode(s, encoding)
loader.to_unicode = to_unicode
self.assertString(loader.unicode(non_ascii), u"abcdé")
def test_unicode__encoding_argument(self):
"""
Test unicode(): encoding argument.
"""
loader = Loader()
non_ascii = u'abcdé'.encode('utf-8')
self.assertRaises(UnicodeDecodeError, loader.unicode, non_ascii)
actual = loader.unicode(non_ascii, encoding='utf-8')
self.assertString(actual, u'abcdé')
# TODO: check the read() unit tests.
def test_read(self):
"""
Test read().
"""
loader = Loader()
path = self._get_path('ascii.mustache')
actual = loader.read(path)
self.assertString(actual, u'ascii: abc')
def test_read__file_encoding__attribute(self):
"""
Test read(): file_encoding attribute respected.
"""
loader = Loader()
path = self._get_path('non_ascii.mustache')
self.assertRaises(UnicodeDecodeError, loader.read, path)
loader.file_encoding = 'utf-8'
actual = loader.read(path)
self.assertString(actual, u'non-ascii: é')
def test_read__encoding__argument(self):
"""
Test read(): encoding argument respected.
"""
loader = Loader()
path = self._get_path('non_ascii.mustache')
self.assertRaises(UnicodeDecodeError, loader.read, path)
actual = loader.read(path, encoding='utf-8')
self.assertString(actual, u'non-ascii: é')
def test_read__to_unicode__attribute(self):
"""
Test read(): to_unicode attribute respected.
"""
loader = Loader()
path = self._get_path('non_ascii.mustache')
self.assertRaises(UnicodeDecodeError, loader.read, path)
#loader.decode_errors = 'ignore'
#actual = loader.read(path)
#self.assertString(actual, u'non-ascii: ')
def test_load_file(self):
loader = Loader(search_dirs=[DATA_DIR, LOADER_DATA_DIR])
template = loader.load_file('template.txt')
self.assertEqual(template, 'Test template file\n')
def test_load_name(self):
loader = Loader(search_dirs=[DATA_DIR, LOADER_DATA_DIR],
extension='txt')
template = loader.load_name('template')
self.assertEqual(template, 'Test template file\n')
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