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import io
import locale
import mimetypes
import pathlib
import sys
import unittest.mock
from test import support
from test.support import os_helper
from platform import win32_edition
try:
import _winapi
except ImportError:
_winapi = None
def setUpModule():
global knownfiles
knownfiles = mimetypes.knownfiles
# Tell it we don't know about external files:
mimetypes.knownfiles = []
mimetypes.inited = False
mimetypes._default_mime_types()
def tearDownModule():
# Restore knownfiles to its initial state
mimetypes.knownfiles = knownfiles
class MimeTypesTestCase(unittest.TestCase):
def setUp(self):
self.db = mimetypes.MimeTypes()
def test_default_data(self):
eq = self.assertEqual
eq(self.db.guess_type("foo.html"), ("text/html", None))
eq(self.db.guess_type("foo.HTML"), ("text/html", None))
eq(self.db.guess_type("foo.tgz"), ("application/x-tar", "gzip"))
eq(self.db.guess_type("foo.tar.gz"), ("application/x-tar", "gzip"))
eq(self.db.guess_type("foo.tar.Z"), ("application/x-tar", "compress"))
eq(self.db.guess_type("foo.tar.bz2"), ("application/x-tar", "bzip2"))
eq(self.db.guess_type("foo.tar.xz"), ("application/x-tar", "xz"))
def test_data_urls(self):
eq = self.assertEqual
guess_type = self.db.guess_type
eq(guess_type("data:invalidDataWithoutComma"), (None, None))
eq(guess_type("data:,thisIsTextPlain"), ("text/plain", None))
eq(guess_type("data:;base64,thisIsTextPlain"), ("text/plain", None))
eq(guess_type("data:text/x-foo,thisIsTextXFoo"), ("text/x-foo", None))
def test_file_parsing(self):
eq = self.assertEqual
sio = io.StringIO("x-application/x-unittest pyunit\n")
self.db.readfp(sio)
eq(self.db.guess_type("foo.pyunit"),
("x-application/x-unittest", None))
eq(self.db.guess_extension("x-application/x-unittest"), ".pyunit")
def test_read_mime_types(self):
eq = self.assertEqual
# Unreadable file returns None
self.assertIsNone(mimetypes.read_mime_types("non-existent"))
with os_helper.temp_dir() as directory:
data = "x-application/x-unittest pyunit\n"
file = pathlib.Path(directory, "sample.mimetype")
file.write_text(data, encoding="utf-8")
mime_dict = mimetypes.read_mime_types(file)
eq(mime_dict[".pyunit"], "x-application/x-unittest")
# bpo-41048: read_mime_types should read the rule file with 'utf-8' encoding.
# Not with locale encoding. _bootlocale has been imported because io.open(...)
# uses it.
data = "application/no-mans-land Fran\u00E7ais"
filename = "filename"
fp = io.StringIO(data)
with unittest.mock.patch.object(mimetypes, 'open',
return_value=fp) as mock_open:
mime_dict = mimetypes.read_mime_types(filename)
mock_open.assert_called_with(filename, encoding='utf-8')
eq(mime_dict[".Français"], "application/no-mans-land")
def test_non_standard_types(self):
eq = self.assertEqual
# First try strict
eq(self.db.guess_type('foo.xul', strict=True), (None, None))
eq(self.db.guess_extension('image/jpg', strict=True), None)
# And then non-strict
eq(self.db.guess_type('foo.xul', strict=False), ('text/xul', None))
eq(self.db.guess_type('foo.XUL', strict=False), ('text/xul', None))
eq(self.db.guess_type('foo.invalid', strict=False), (None, None))
eq(self.db.guess_extension('image/jpg', strict=False), '.jpg')
eq(self.db.guess_extension('image/JPG', strict=False), '.jpg')
def test_filename_with_url_delimiters(self):
# bpo-38449: URL delimiters cases should be handled also.
# They would have different mime types if interpreted as URL as
# compared to when interpreted as filename because of the semicolon.
eq = self.assertEqual
gzip_expected = ('application/x-tar', 'gzip')
eq(self.db.guess_type(";1.tar.gz"), gzip_expected)
eq(self.db.guess_type("?1.tar.gz"), gzip_expected)
eq(self.db.guess_type("#1.tar.gz"), gzip_expected)
eq(self.db.guess_type("#1#.tar.gz"), gzip_expected)
eq(self.db.guess_type(";1#.tar.gz"), gzip_expected)
eq(self.db.guess_type(";&1=123;?.tar.gz"), gzip_expected)
eq(self.db.guess_type("?k1=v1&k2=v2.tar.gz"), gzip_expected)
eq(self.db.guess_type(r" \"\`;b&b&c |.tar.gz"), gzip_expected)
def test_guess_all_types(self):
# First try strict. Use a set here for testing the results because if
# test_urllib2 is run before test_mimetypes, global state is modified
# such that the 'all' set will have more items in it.
all = self.db.guess_all_extensions('text/plain', strict=True)
self.assertTrue(set(all) >= {'.bat', '.c', '.h', '.ksh', '.pl', '.txt'})
self.assertEqual(len(set(all)), len(all)) # no duplicates
# And now non-strict
all = self.db.guess_all_extensions('image/jpg', strict=False)
self.assertEqual(all, ['.jpg'])
# And now for no hits
all = self.db.guess_all_extensions('image/jpg', strict=True)
self.assertEqual(all, [])
# And now for type existing in both strict and non-strict mappings.
self.db.add_type('test-type', '.strict-ext')
self.db.add_type('test-type', '.non-strict-ext', strict=False)
all = self.db.guess_all_extensions('test-type', strict=False)
self.assertEqual(all, ['.strict-ext', '.non-strict-ext'])
all = self.db.guess_all_extensions('test-type')
self.assertEqual(all, ['.strict-ext'])
# Test that changing the result list does not affect the global state
all.append('.no-such-ext')
all = self.db.guess_all_extensions('test-type')
self.assertNotIn('.no-such-ext', all)
all = self.db.guess_all_extensions('text/javascript', strict=True)
self.assertTrue(set(all) >= {'.js', '.mjs'})
self.assertEqual(len(set(all)), len(all))
def test_encoding(self):
getpreferredencoding = locale.getpreferredencoding
self.addCleanup(setattr, locale, 'getpreferredencoding',
getpreferredencoding)
locale.getpreferredencoding = lambda: 'ascii'
filename = support.findfile("mime.types")
mimes = mimetypes.MimeTypes([filename])
exts = mimes.guess_all_extensions('application/vnd.geocube+xml',
strict=True)
self.assertEqual(exts, ['.g3', '.g\xb3'])
def test_init_reinitializes(self):
# Issue 4936: make sure an init starts clean
# First, put some poison into the types table
mimetypes.add_type('foo/bar', '.foobar')
self.assertEqual(mimetypes.guess_extension('foo/bar'), '.foobar')
# Reinitialize
mimetypes.init()
# Poison should be gone.
self.assertEqual(mimetypes.guess_extension('foo/bar'), None)
def test_preferred_extension(self):
def check_extensions():
self.assertEqual(mimetypes.guess_extension('application/octet-stream'), '.bin')
self.assertEqual(mimetypes.guess_extension('application/postscript'), '.ps')
self.assertEqual(mimetypes.guess_extension('application/vnd.apple.mpegurl'), '.m3u')
self.assertEqual(mimetypes.guess_extension('application/vnd.ms-excel'), '.xls')
self.assertEqual(mimetypes.guess_extension('application/vnd.ms-powerpoint'), '.ppt')
self.assertEqual(mimetypes.guess_extension('application/x-texinfo'), '.texi')
self.assertEqual(mimetypes.guess_extension('application/x-troff'), '.roff')
self.assertEqual(mimetypes.guess_extension('application/xml'), '.xsl')
self.assertEqual(mimetypes.guess_extension('audio/mpeg'), '.mp3')
self.assertEqual(mimetypes.guess_extension('image/jpeg'), '.jpg')
self.assertEqual(mimetypes.guess_extension('image/tiff'), '.tiff')
self.assertEqual(mimetypes.guess_extension('message/rfc822'), '.eml')
self.assertEqual(mimetypes.guess_extension('text/html'), '.html')
self.assertEqual(mimetypes.guess_extension('text/plain'), '.txt')
self.assertEqual(mimetypes.guess_extension('video/mpeg'), '.mpeg')
self.assertEqual(mimetypes.guess_extension('video/quicktime'), '.mov')
check_extensions()
mimetypes.init()
check_extensions()
def test_init_stability(self):
mimetypes.init()
suffix_map = mimetypes.suffix_map
encodings_map = mimetypes.encodings_map
types_map = mimetypes.types_map
common_types = mimetypes.common_types
mimetypes.init()
self.assertIsNot(suffix_map, mimetypes.suffix_map)
self.assertIsNot(encodings_map, mimetypes.encodings_map)
self.assertIsNot(types_map, mimetypes.types_map)
self.assertIsNot(common_types, mimetypes.common_types)
self.assertEqual(suffix_map, mimetypes.suffix_map)
self.assertEqual(encodings_map, mimetypes.encodings_map)
self.assertEqual(types_map, mimetypes.types_map)
self.assertEqual(common_types, mimetypes.common_types)
def test_path_like_ob(self):
filename = "LICENSE.txt"
filepath = pathlib.Path(filename)
filepath_with_abs_dir = pathlib.Path('/dir/'+filename)
filepath_relative = pathlib.Path('../dir/'+filename)
path_dir = pathlib.Path('./')
expected = self.db.guess_type(filename)
self.assertEqual(self.db.guess_type(filepath), expected)
self.assertEqual(self.db.guess_type(
filepath_with_abs_dir), expected)
self.assertEqual(self.db.guess_type(filepath_relative), expected)
self.assertEqual(self.db.guess_type(path_dir), (None, None))
def test_keywords_args_api(self):
self.assertEqual(self.db.guess_type(
url="foo.html", strict=True), ("text/html", None))
self.assertEqual(self.db.guess_all_extensions(
type='image/jpg', strict=True), [])
self.assertEqual(self.db.guess_extension(
type='image/jpg', strict=False), '.jpg')
@unittest.skipUnless(sys.platform.startswith("win"), "Windows only")
class Win32MimeTypesTestCase(unittest.TestCase):
def setUp(self):
# ensure all entries actually come from the Windows registry
self.original_types_map = mimetypes.types_map.copy()
mimetypes.types_map.clear()
mimetypes.init()
self.db = mimetypes.MimeTypes()
def tearDown(self):
# restore default settings
mimetypes.types_map.clear()
mimetypes.types_map.update(self.original_types_map)
@unittest.skipIf(win32_edition() in ('NanoServer', 'WindowsCoreHeadless', 'IoTEdgeOS'),
"MIME types registry keys unavailable")
def test_registry_parsing(self):
# the original, minimum contents of the MIME database in the
# Windows registry is undocumented AFAIK.
# Use file types that should *always* exist:
eq = self.assertEqual
eq(self.db.guess_type("foo.txt"), ("text/plain", None))
eq(self.db.guess_type("image.jpg"), ("image/jpeg", None))
eq(self.db.guess_type("image.png"), ("image/png", None))
@unittest.skipIf(not hasattr(_winapi, "_mimetypes_read_windows_registry"),
"read_windows_registry accelerator unavailable")
def test_registry_accelerator(self):
from_accel = {}
from_reg = {}
_winapi._mimetypes_read_windows_registry(
lambda v, k: from_accel.setdefault(k, set()).add(v)
)
mimetypes.MimeTypes._read_windows_registry(
lambda v, k: from_reg.setdefault(k, set()).add(v)
)
self.assertEqual(list(from_reg), list(from_accel))
for k in from_reg:
self.assertEqual(from_reg[k], from_accel[k])
class MiscTestCase(unittest.TestCase):
def test__all__(self):
support.check__all__(self, mimetypes)
class MimetypesCliTestCase(unittest.TestCase):
def mimetypes_cmd(self, *args, **kwargs):
support.patch(self, sys, "argv", [sys.executable, *args])
with support.captured_stdout() as output:
mimetypes._main()
return output.getvalue().strip()
def test_help_option(self):
support.patch(self, sys, "argv", [sys.executable, "-h"])
with support.captured_stdout() as output:
with self.assertRaises(SystemExit) as cm:
mimetypes._main()
self.assertIn("Usage: mimetypes.py", output.getvalue())
self.assertEqual(cm.exception.code, 0)
def test_invalid_option(self):
support.patch(self, sys, "argv", [sys.executable, "--invalid"])
with support.captured_stdout() as output:
with self.assertRaises(SystemExit) as cm:
mimetypes._main()
self.assertIn("Usage: mimetypes.py", output.getvalue())
self.assertEqual(cm.exception.code, 1)
def test_guess_extension(self):
eq = self.assertEqual
extension = self.mimetypes_cmd("-l", "-e", "image/jpg")
eq(extension, ".jpg")
extension = self.mimetypes_cmd("-e", "image/jpg")
eq(extension, "I don't know anything about type image/jpg")
extension = self.mimetypes_cmd("-e", "image/jpeg")
eq(extension, ".jpg")
def test_guess_type(self):
eq = self.assertEqual
type_info = self.mimetypes_cmd("-l", "foo.pic")
eq(type_info, "type: image/pict encoding: None")
type_info = self.mimetypes_cmd("foo.pic")
eq(type_info, "I don't know anything about type foo.pic")
if __name__ == "__main__":
unittest.main()