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import os
# for output which reports a local time
os.environ['TZ'] = 'GMT'
import os.path
import unittest
import magic
class MagicTest(unittest.TestCase):
TESTDATA_DIR = os.path.join(os.path.dirname(__file__), 'testdata')
def assert_values(self, m, expected_values):
for filename, expected_value in expected_values.items():
try:
filename = os.path.join(self.TESTDATA_DIR, filename)
except TypeError:
filename = os.path.join(self.TESTDATA_DIR.encode('utf-8'), filename)
with open(filename, 'rb') as f:
value = m.from_buffer(f.read())
expected_value_bytes = expected_value.encode('utf-8')
self.assertEqual(value, expected_value_bytes)
value = m.from_file(filename)
self.assertEqual(value, expected_value_bytes)
def test_mime_types(self):
m = magic.Magic(mime=True)
self.assert_values(m, {
'magic.pyc': 'application/octet-stream',
'test.pdf': 'application/pdf',
'test.gz': 'application/gzip',
'text.txt': 'text/plain',
b'\xce\xbb'.decode('utf-8'): 'text/plain',
b'\xce\xbb': 'text/plain',
})
def test_descriptions(self):
m = magic.Magic()
os.environ['TZ'] = 'UTC' # To get the last modified date of test.gz in UTC
try:
self.assert_values(m, {
'magic.pyc': 'python 2.4 byte-compiled',
'test.pdf': 'PDF document, version 1.2',
'test.gz':
'gzip compressed data, was "test", last modified: Sun Jun 29 01:32:52 2008, from Unix',
'text.txt': 'ASCII text',
})
finally:
del os.environ['TZ']
def test_mime_encodings(self):
m = magic.Magic(mime_encoding=True)
self.assert_values(m, {
'text-iso8859-1.txt': 'iso-8859-1',
'text.txt': 'us-ascii',
})
def test_errors(self):
m = magic.Magic()
self.assertRaises(IOError, m.from_file, 'nonexistent')
self.assertRaises(magic.MagicException, magic.Magic,
magic_file='nonexistent')
os.environ['MAGIC'] = 'nonexistent'
try:
self.assertRaises(magic.MagicException, magic.Magic)
finally:
del os.environ['MAGIC']
def test_keep_going(self):
filename = os.path.join(self.TESTDATA_DIR, 'keep-going.jpg')
m = magic.Magic(mime=True)
self.assertEqual(m.from_file(filename),
'image/jpeg'.encode('utf-8'))
m = magic.Magic(mime=True, keep_going=True)
self.assertEqual(m.from_file(filename), 'image/jpeg'.encode('utf-8'))
if __name__ == '__main__':
unittest.main()
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