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import os
# for output which reports a local time
os.environ['TZ'] = 'GMT'
if os.environ.get('LC_ALL', '') != 'C.UTF-8':
# this ensure we're in a utf-8 default filesystem encoding which is
# necessary for some tests
raise Exception("must run `export LC_ALL=C.UTF-8` before running test suite")
import shutil
import os.path
import unittest
import magic
import sys
# magic_descriptor is broken (?) in centos 7, so don't run those tests
SKIP_FROM_DESCRIPTOR = bool(os.environ.get('SKIP_FROM_DESCRIPTOR'))
class MagicTest(unittest.TestCase):
TESTDATA_DIR = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'testdata')
def test_version(self):
try:
self.assertTrue(magic.version() > 0)
except NotImplementedError:
pass
def test_fs_encoding(self):
self.assertEqual('utf-8', sys.getfilesystemencoding().lower())
def assert_values(self, m, expected_values, buf_equals_file=True):
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)
if type(expected_value) is not tuple:
expected_value = (expected_value,)
with open(filename, 'rb') as f:
buf_value = m.from_buffer(f.read())
file_value = m.from_file(filename)
if buf_equals_file:
self.assertEqual(buf_value, file_value)
for value in (buf_value, file_value):
self.assertIn(value, expected_value)
def test_from_file_str_and_bytes(self):
filename = os.path.join(self.TESTDATA_DIR, "test.pdf")
self.assertEqual('application/pdf',
magic.from_file(filename, mime=True))
self.assertEqual('application/pdf',
magic.from_file(filename.encode('utf-8'), mime=True))
def test_from_descriptor_str_and_bytes(self):
if SKIP_FROM_DESCRIPTOR:
self.skipTest("magic_descriptor is broken in this version of libmagic")
filename = os.path.join(self.TESTDATA_DIR, "test.pdf")
with open(filename) as f:
self.assertEqual('application/pdf',
magic.from_descriptor(f.fileno(), mime=True))
self.assertEqual('application/pdf',
magic.from_descriptor(f.fileno(), mime=True))
def test_from_buffer_str_and_bytes(self):
if SKIP_FROM_DESCRIPTOR:
self.skipTest("magic_descriptor is broken in this version of libmagic")
m = magic.Magic(mime=True)
self.assertTrue(
m.from_buffer('#!/usr/bin/env python\nprint("foo")')
in ("text/x-python", "text/x-script.python"))
self.assertTrue(
m.from_buffer(b'#!/usr/bin/env python\nprint("foo")')
in ("text/x-python", "text/x-script.python"))
def test_mime_types(self):
dest = os.path.join(MagicTest.TESTDATA_DIR,
b'\xce\xbb'.decode('utf-8'))
shutil.copyfile(os.path.join(MagicTest.TESTDATA_DIR, 'lambda'), dest)
try:
m = magic.Magic(mime=True)
self.assert_values(m, {
'magic._pyc_': ('application/octet-stream', 'text/x-bytecode.python'),
'test.pdf': 'application/pdf',
'test.gz': ('application/gzip', 'application/x-gzip'),
'test.snappy.parquet': 'application/octet-stream',
'text.txt': 'text/plain',
b'\xce\xbb'.decode('utf-8'): 'text/plain',
b'\xce\xbb': 'text/plain',
})
finally:
os.unlink(dest)
def test_descriptions(self):
m = magic.Magic()
os.environ['TZ'] = 'UTC' # To get 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", from Unix, last '
'modified: Sun Jun 29 01:32:52 2008',
'gzip compressed data, was "test", last modified'
': Sun Jun 29 01:32:52 2008, from Unix',
'gzip compressed data, was "test", last modified'
': Sun Jun 29 01:32:52 2008, from Unix, original size 15',
'gzip compressed data, was "test", '
'last modified: Sun Jun 29 01:32:52 2008, '
'from Unix, original size modulo 2^32 15',
'gzip compressed data, was "test", last modified'
': Sun Jun 29 01:32:52 2008, from Unix, truncated'
),
'text.txt': 'ASCII text',
'test.snappy.parquet': ('Apache Parquet', 'Par archive data'),
}, buf_equals_file=False)
finally:
del os.environ['TZ']
def test_extension(self):
try:
m = magic.Magic(extension=True)
self.assert_values(m, {
# some versions return '' for the extensions of a gz file,
# including w/ the command line. Who knows...
'test.gz': ('gz/tgz/tpz/zabw/svgz', '', '???'),
'name_use.jpg': 'jpeg/jpg/jpe/jfif',
})
except NotImplementedError:
self.skipTest('MAGIC_EXTENSION not supported in this version')
def test_unicode_result_nonraw(self):
m = magic.Magic(raw=False)
src = os.path.join(MagicTest.TESTDATA_DIR, 'pgpunicode')
result = m.from_file(src)
# NOTE: This check is added as otherwise some magic files don't identify the test case as a PGP key.
if 'PGP' in result:
assert r"PGP\011Secret Sub-key -" == result
else:
raise unittest.SkipTest("Magic file doesn't return expected type.")
def test_unicode_result_raw(self):
m = magic.Magic(raw=True)
src = os.path.join(MagicTest.TESTDATA_DIR, 'pgpunicode')
result = m.from_file(src)
if 'PGP' in result:
assert b'PGP\tSecret Sub-key -' == result.encode('utf-8')
else:
raise unittest.SkipTest("Magic file doesn't return expected type.")
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')
try:
# this will throw if you have an "old" version of the library
# I'm otherwise not sure how to query if keep_going is supported
magic.version()
m = magic.Magic(mime=True, keep_going=True)
self.assertEqual(m.from_file(filename),
'image/jpeg\\012- application/octet-stream')
except NotImplementedError:
pass
def test_rethrow(self):
old = magic.magic_buffer
try:
def t(x, y):
raise magic.MagicException("passthrough")
magic.magic_buffer = t
with self.assertRaises(magic.MagicException):
magic.from_buffer("hello", True)
finally:
magic.magic_buffer = old
def test_getparam(self):
m = magic.Magic(mime=True)
try:
m.setparam(magic.MAGIC_PARAM_INDIR_MAX, 1)
self.assertEqual(m.getparam(magic.MAGIC_PARAM_INDIR_MAX), 1)
except NotImplementedError:
pass
def test_name_count(self):
m = magic.Magic()
with open(os.path.join(self.TESTDATA_DIR, 'name_use.jpg'), 'rb') as f:
m.from_buffer(f.read())
if __name__ == '__main__':
unittest.main()
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