def test_write(self):
# __doc__ (as of 2008-08-02) for pygame.bufferproxy.BufferProxy.write:
# B.write (bufferproxy, buffer, offset) -> None
#
# Writes raw data to the bufferproxy.
#
# Writes the raw data from buffer to the BufferProxy object, starting
# at the specified offset within the BufferProxy.
# If the length of the passed buffer exceeds the length of the
# BufferProxy (reduced by the offset), an IndexError will be raised.
from ctypes import c_byte, sizeof, addressof, string_at, memset
nullbyte = '\x00'.encode('latin_1')
Buf = c_byte * 10
data_buf = Buf(*range(1, 3 * sizeof(Buf) + 1, 3))
data = string_at(data_buf, sizeof(data_buf))
buf = Buf()
bp = BufferProxy({
'typestr': '|u1',
'shape': (sizeof(buf), ),
'data': (addressof(buf), False)
})
try:
self.assertEqual(bp.raw, nullbyte * sizeof(Buf))
bp.write(data)
self.assertEqual(bp.raw, data)
memset(buf, 0, sizeof(buf))
bp.write(data[:3], 2)
raw = bp.raw
self.assertEqual(raw[:2], nullbyte * 2)
self.assertEqual(raw[2:5], data[:3])
self.assertEqual(raw[5:], nullbyte * (sizeof(Buf) - 5))
bp.write(data[:3], bp.length - 3)
raw = bp.raw
self.assertEqual(raw[-3:], data[:3])
self.assertRaises(IndexError, bp.write, data, 1)
self.assertRaises(IndexError, bp.write, data[:5], -1)
self.assertRaises(IndexError, bp.write, data[:5], bp.length)
self.assertRaises(TypeError, bp.write, 12)
bp = BufferProxy({
'typestr': '|u1',
'shape': (sizeof(buf), ),
'data': (addressof(buf), True)
})
self.assertRaises(pygame.BufferError, bp.write,
'123'.encode('latin_1'))
finally:
# Make sure bp is garbage collected before buf
bp = None
gc.collect()
def test_write(self):
# __doc__ (as of 2008-08-02) for pygame.bufferproxy.BufferProxy.write:
# B.write (bufferproxy, buffer, offset) -> None
#
# Writes raw data to the bufferproxy.
#
# Writes the raw data from buffer to the BufferProxy object, starting
# at the specified offset within the BufferProxy.
# If the length of the passed buffer exceeds the length of the
# BufferProxy (reduced by the offset), an IndexError will be raised.
from ctypes import c_byte, sizeof, addressof, string_at, memset
nullbyte = '\x00'.encode('latin_1')
Buf = c_byte * 10
data_buf = Buf(*range(1, 3 * sizeof(Buf) + 1, 3))
data = string_at(data_buf, sizeof(data_buf))
buf = Buf()
bp = BufferProxy({'typestr': '|u1',
'shape': (sizeof(buf),),
'data': (addressof(buf), False)})
try:
self.assertEqual(bp.raw, nullbyte * sizeof(Buf))
bp.write(data)
self.assertEqual(bp.raw, data)
memset(buf, 0, sizeof(buf))
bp.write(data[:3], 2)
raw = bp.raw
self.assertEqual(raw[:2], nullbyte * 2)
self.assertEqual(raw[2:5], data[:3])
self.assertEqual(raw[5:], nullbyte * (sizeof(Buf) - 5))
bp.write(data[:3], bp.length - 3)
raw = bp.raw
self.assertEqual(raw[-3:], data[:3])
self.assertRaises(IndexError, bp.write, data, 1)
self.assertRaises(IndexError, bp.write, data[:5], -1)
self.assertRaises(IndexError, bp.write, data[:5], bp.length)
self.assertRaises(TypeError, bp.write, 12)
bp = BufferProxy({'typestr': '|u1',
'shape': (sizeof(buf),),
'data': (addressof(buf), True)})
self.assertRaises(BufferError, bp.write, '123'.encode('latin_1'))
finally:
# Make sure bp is garbage collected before buf
bp = None
gc.collect()
