1 import mimetypes 2 import StringIO 3 import unittest 4 import sys 5 6 from test import test_support 7 8 # Tell it we don't know about external files: 9 mimetypes.knownfiles = [] 10 mimetypes.inited = False 11 mimetypes._default_mime_types() 12 13 14 class MimeTypesTestCase(unittest.TestCase): 15 def setUp(self): 16 self.db = mimetypes.MimeTypes() 17 18 def test_default_data(self): 19 eq = self.assertEqual 20 eq(self.db.guess_type("foo.html"), ("text/html", None)) 21 eq(self.db.guess_type("foo.tgz"), ("application/x-tar", "gzip")) 22 eq(self.db.guess_type("foo.tar.gz"), ("application/x-tar", "gzip")) 23 eq(self.db.guess_type("foo.tar.Z"), ("application/x-tar", "compress")) 24 25 def test_data_urls(self): 26 eq = self.assertEqual 27 guess_type = self.db.guess_type 28 eq(guess_type("data:,thisIsTextPlain"), ("text/plain", None)) 29 eq(guess_type("data:;base64,thisIsTextPlain"), ("text/plain", None)) 30 eq(guess_type("data:text/x-foo,thisIsTextXFoo"), ("text/x-foo", None)) 31 32 def test_file_parsing(self): 33 eq = self.assertEqual 34 sio = StringIO.StringIO("x-application/x-unittest pyunit\n") 35 self.db.readfp(sio) 36 eq(self.db.guess_type("foo.pyunit"), 37 ("x-application/x-unittest", None)) 38 eq(self.db.guess_extension("x-application/x-unittest"), ".pyunit") 39 40 def test_non_standard_types(self): 41 eq = self.assertEqual 42 # First try strict 43 eq(self.db.guess_type('foo.xul', strict=True), (None, None)) 44 eq(self.db.guess_extension('image/jpg', strict=True), None) 45 # And then non-strict 46 eq(self.db.guess_type('foo.xul', strict=False), ('text/xul', None)) 47 eq(self.db.guess_extension('image/jpg', strict=False), '.jpg') 48 49 def test_guess_all_types(self): 50 eq = self.assertEqual 51 unless = self.assertTrue 52 # First try strict. Use a set here for testing the results because if 53 # test_urllib2 is run before test_mimetypes, global state is modified 54 # such that the 'all' set will have more items in it. 55 all = set(self.db.guess_all_extensions('text/plain', strict=True)) 56 unless(all >= set(['.bat', '.c', '.h', '.ksh', '.pl', '.txt'])) 57 # And now non-strict 58 all = self.db.guess_all_extensions('image/jpg', strict=False) 59 all.sort() 60 eq(all, ['.jpg']) 61 # And now for no hits 62 all = self.db.guess_all_extensions('image/jpg', strict=True) 63 eq(all, []) 64 65 66 @unittest.skipUnless(sys.platform.startswith("win"), "Windows only") 67 class Win32MimeTypesTestCase(unittest.TestCase): 68 def setUp(self): 69 # ensure all entries actually come from the Windows registry 70 self.original_types_map = mimetypes.types_map.copy() 71 mimetypes.types_map.clear() 72 mimetypes.init() 73 self.db = mimetypes.MimeTypes() 74 75 def tearDown(self): 76 # restore default settings 77 mimetypes.types_map.clear() 78 mimetypes.types_map.update(self.original_types_map) 79 80 def test_registry_parsing(self): 81 # the original, minimum contents of the MIME database in the 82 # Windows registry is undocumented AFAIK. 83 # Use file types that should *always* exist: 84 eq = self.assertEqual 85 eq(self.db.guess_type("foo.txt"), ("text/plain", None)) 86 87 def test_main(): 88 test_support.run_unittest(MimeTypesTestCase, 89 Win32MimeTypesTestCase 90 ) 91 92 93 if __name__ == "__main__": 94 test_main() 95
