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Issue #13589: Fix some serialization primitives in the aifc module.

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Patch by Oleg Plakhotnyuk.
This commit is contained in:
Antoine Pitrou 2012-01-17 17:14:30 +01:00
commit 0174db50a5
4 changed files with 71 additions and 18 deletions
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37
Lib/test/test_aifc.py
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@ -144,8 +144,45 @@ class AIFCTest(unittest.TestCase):
self.assertRaises(aifc.Error, f.getmark, 3)
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__":