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import os
import io
from mutagen.ac3 import AC3, AC3Error
from tests import TestCase, DATA_DIR
class TAC3(TestCase):
def setUp(self):
self.ac3 = AC3(os.path.join(DATA_DIR, "silence-44-s.ac3"))
self.eac3 = AC3(os.path.join(DATA_DIR, "silence-44-s.eac3"))
def test_channels(self):
self.failUnlessEqual(self.ac3.info.channels, 2)
self.failUnlessEqual(self.eac3.info.channels, 2)
def test_bitrate(self):
self.failUnlessEqual(self.ac3.info.bitrate, 192000)
self.failUnlessAlmostEqual(self.eac3.info.bitrate, 192000, delta=500)
def test_sample_rate(self):
self.failUnlessEqual(self.ac3.info.sample_rate, 44100)
self.failUnlessEqual(self.eac3.info.sample_rate, 44100)
def test_length(self):
self.failUnlessAlmostEqual(self.ac3.info.length, 3.70, delta=0.009)
self.failUnlessAlmostEqual(self.eac3.info.length, 3.70, delta=0.009)
def test_type(self):
self.failUnlessEqual(self.ac3.info.codec, "ac-3")
self.failUnlessEqual(self.eac3.info.codec, "ec-3")
def test_not_my_file(self):
self.failUnlessRaises(
AC3Error, AC3,
os.path.join(DATA_DIR, "empty.ogg"))
self.failUnlessRaises(
AC3Error, AC3,
os.path.join(DATA_DIR, "silence-44-s.mp3"))
def test_pprint(self):
self.assertTrue("ac-3" in self.ac3.pprint())
self.assertTrue("ec-3" in self.eac3.pprint())
def test_fuzz_extra_bitstream_info(self):
with self.assertRaises(AC3Error):
AC3(io.BytesIO(b'\x0bwII\x00\x00\xe3\xe3//'))
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