from test.test_support import findfile, run_unittest, TESTFN import unittest import os import io import aifc class AIFCTest(unittest.TestCase): def setUp(self): self.f = self.fout = None self.sndfilepath = findfile('Sine-1000Hz-300ms.aif') def tearDown(self): if self.f is not None: self.f.close() if self.fout is not None: try: self.fout.close() except (aifc.Error, AttributeError): pass try: os.remove(TESTFN) except OSError: pass def test_skipunknown(self): #Issue 2245 #This file contains chunk types aifc doesn't recognize. self.f = aifc.open(self.sndfilepath) def test_params(self): f = self.f = aifc.open(self.sndfilepath) self.assertEqual(f.getnchannels(), 2) self.assertEqual(f.getsampwidth(), 2) self.assertEqual(f.getframerate(), 48000) self.assertEqual(f.getnframes(), 14400) self.assertEqual(f.getcomptype(), 'NONE') self.assertEqual(f.getcompname(), 'not compressed') self.assertEqual(f.getparams(), (2, 2, 48000, 14400, 'NONE', 'not compressed')) def test_read(self): f = self.f = aifc.open(self.sndfilepath) self.assertEqual(f.tell(), 0) self.assertEqual(f.readframes(2), '\x00\x00\x00\x00\x0b\xd4\x0b\xd4') f.rewind() pos0 = f.tell() self.assertEqual(pos0, 0) self.assertEqual(f.readframes(2), '\x00\x00\x00\x00\x0b\xd4\x0b\xd4') pos2 = f.tell() self.assertEqual(pos2, 2) self.assertEqual(f.readframes(2), '\x17t\x17t"\xad"\xad') f.setpos(pos2) self.assertEqual(f.readframes(2), '\x17t\x17t"\xad"\xad') f.setpos(pos0) self.assertEqual(f.readframes(2), '\x00\x00\x00\x00\x0b\xd4\x0b\xd4') def test_write(self): f = self.f = aifc.open(self.sndfilepath) fout = self.fout = aifc.open(TESTFN, 'wb') fout.aifc() fout.setparams(f.getparams()) for frame in range(f.getnframes()): fout.writeframes(f.readframes(1)) fout.close() fout = self.fout = aifc.open(TESTFN, 'rb') f.rewind() self.assertEqual(f.getparams(), fout.getparams()) self.assertEqual(f.readframes(5), fout.readframes(5)) def test_compress(self): f = self.f = aifc.open(self.sndfilepath) fout = self.fout = aifc.open(TESTFN, 'wb') fout.aifc() fout.setnchannels(f.getnchannels()) fout.setsampwidth(f.getsampwidth()) fout.setframerate(f.getframerate()) fout.setcomptype('ULAW', 'foo') for frame in range(f.getnframes()): fout.writeframes(f.readframes(1)) fout.close() self.assertLess( os.stat(TESTFN).st_size, os.stat(self.sndfilepath).st_size*0.75, ) fout = self.fout = aifc.open(TESTFN, 'rb') f.rewind() self.assertEqual(f.getparams()[0:3], fout.getparams()[0:3]) self.assertEqual(fout.getcomptype(), 'ULAW') self.assertEqual(fout.getcompname(), 'foo') # XXX: this test fails, not sure if it should succeed or not # self.assertEqual(f.readframes(5), fout.readframes(5)) def test_close(self): class Wrapfile(object): def __init__(self, file): self.file = open(file, 'rb') self.closed = False def close(self): self.file.close() self.closed = True def __getattr__(self, attr): return getattr(self.file, attr) testfile = Wrapfile(self.sndfilepath) f = self.f = aifc.open(testfile) self.assertEqual(testfile.closed, False) f.close() self.assertEqual(testfile.closed, True) class AIFCLowLevelTest(unittest.TestCase): def test_read_written(self): def read_written(self, what): f = io.BytesIO() getattr(aifc, '_write_' + what)(f, x) f.seek(0) return getattr(aifc, '_read_' + what)(f) for x in (-1, 0, 0.1, 1): self.assertEqual(read_written(x, 'float'), x) for x in (float('NaN'), float('Inf')): self.assertEqual(read_written(x, 'float'), aifc._HUGE_VAL) for x in (b'', b'foo', b'a' * 255): self.assertEqual(read_written(x, 'string'), x) for x in (-0x7FFFFFFF, -1, 0, 1, 0x7FFFFFFF): self.assertEqual(read_written(x, 'long'), x) for x in (0, 1, 0xFFFFFFFF): self.assertEqual(read_written(x, 'ulong'), x) for x in (-0x7FFF, -1, 0, 1, 0x7FFF): self.assertEqual(read_written(x, 'short'), x) for x in (0, 1, 0xFFFF): self.assertEqual(read_written(x, 'ushort'), x) def test_read_raises(self): f = io.BytesIO(b'\x00') self.assertRaises(EOFError, aifc._read_ulong, f) self.assertRaises(EOFError, aifc._read_long, f) self.assertRaises(EOFError, aifc._read_ushort, f) self.assertRaises(EOFError, aifc._read_short, f) def test_write_long_string_raises(self): f = io.BytesIO() with self.assertRaises(ValueError): aifc._write_string(f, b'too long' * 255) def test_main(): run_unittest(AIFCTest) run_unittest(AIFCLowLevelTest) if __name__ == "__main__": unittest.main()