def make_response(seq, action, error=0, p1=0, p2=0, data=None, length=None):
if not length:
length = 14
if data:
length += 2 + len(data)
response = struct.pack('<2B5H', 1, seq, length, action, error, p1, p2)
crc = stentura._crc(buffer(response, 1, 11))
response += struct.pack('<H', crc)
if data:
crc = stentura._crc(data)
if not isinstance(data, str) and not isinstance(data, buffer):
data = ''.join([chr(b) for b in data])
response += data + struct.pack('<H', crc)
return response
def test_make_open(self):
buf = array.array('B', [3] * 18) # Start with junk in the buffer.
seq = 79
drive = 'A'
filename = 'REALTIME.000'
p = stentura._make_open(buf, seq, drive, filename)
for_crc = [seq, 20 + len(filename), 0, stentura._OPEN, 0, ord(drive),
0, 0, 0, 0, 0, 0, 0, 0, 0]
crc = stentura._crc(for_crc)
data_crc = stentura._crc(filename)
expected = ([1] + for_crc + [crc & 0xFF, crc >> 8] +
[ord(b) for b in filename] +
[data_crc & 0xFF, data_crc >> 8])
self.assertSequenceEqual(p, [chr(b) for b in expected])
def test_make_open(self):
buf = array.array('B', [3] * 18) # Start with junk in the buffer.
seq = 79
drive = 'A'
filename = 'REALTIME.000'
p = stentura._make_open(buf, seq, drive, filename)
for_crc = [seq, 20 + len(filename), 0, stentura._OPEN, 0, ord(drive),
0, 0, 0, 0, 0, 0, 0, 0, 0]
crc = stentura._crc(for_crc)
data_crc = stentura._crc(filename)
expected = ([1] + for_crc + [crc & 0xFF, crc >> 8] +
[ord(b) for b in filename] +
[data_crc & 0xFF, data_crc >> 8])
self.assertSequenceEqual(p, [chr(b) for b in expected])
def make_response(seq, action, error=0, p1=0, p2=0, data=None,
length=None):
if not length:
length = 14
if data:
length += 2 + len(data)
response = struct.pack('<2B5H', 1, seq, length, action, error, p1, p2)
crc = stentura._crc(buffer(response, 1, 11))
response += struct.pack('<H', crc)
if data:
crc = stentura._crc(data)
if not isinstance(data, str) and not isinstance(data, buffer):
data = ''.join([chr(b) for b in data])
response += data + struct.pack('<H', crc)
return response
def test_make_reset(self):
buf = array.array('B', [3] * 20) # Start with junk in the buffer.
seq = 67
p = stentura._make_reset(buf, seq)
for_crc = [seq, 18, 0, stentura._RESET, 0] + ([0] * 10)
crc = stentura._crc(for_crc)
expected = [1] + for_crc + [crc & 0xFF, crc >> 8]
self.assertSequenceEqual(p, [chr(b) for b in expected])
def test_make_reset(self):
buf = array.array('B', [3] * 20) # Start with junk in the buffer.
seq = 67
p = stentura._make_reset(buf, seq)
for_crc = [seq, 18, 0, stentura._RESET, 0] + ([0] * 10)
crc = stentura._crc(for_crc)
expected = [1] + for_crc + [crc & 0xFF, crc >> 8]
self.assertSequenceEqual(p, [chr(b) for b in expected])
def test_make_read(self):
buf = array.array('B', [3] * 20) # Start with junk in the buffer.
seq = 32
block = 1
byte = 8
length = 20
p = stentura._make_read(buf, seq, block, byte, length)
for_crc = [seq, 18, 0, stentura._READC, 0, 1, 0, 0, 0, length, 0,
block, 0, byte, 0]
crc = stentura._crc(for_crc)
expected = [1] + for_crc + [crc & 0xFF, crc >> 8]
self.assertSequenceEqual(p, [chr(b) for b in expected])
def test_make_read(self):
buf = array.array('B', [3] * 20) # Start with junk in the buffer.
seq = 32
block = 1
byte = 8
length = 20
p = stentura._make_read(buf, seq, block, byte, length)
for_crc = [seq, 18, 0, stentura._READC, 0, 1, 0, 0, 0, length, 0,
block, 0, byte, 0]
crc = stentura._crc(for_crc)
expected = [1] + for_crc + [crc & 0xFF, crc >> 8]
self.assertSequenceEqual(p, [chr(b) for b in expected])
def test_make_request(self):
buf = array.array('B')
seq = 2
action = stentura._OPEN
p1, p2, p3, p4, p5 = 1, 2, 3, 4, 5
p = stentura._make_request(buf, action, seq, p1, p2, p3, p4, p5)
for_crc = [seq, 18, 0, action, 0, p1, 0, p2, 0, p3, 0, p4, 0, p5, 0]
crc = stentura._crc(for_crc)
expected = [1] + for_crc + [crc & 0xFF, crc >> 8]
self.assertSequenceEqual(p, [chr(b) for b in expected])
# Now with data.
data = 'Testing Testing 123'
p = stentura._make_request(buf, action, seq, p1, p2, p3, p4, p5, data)
length = 18 + len(data) + 2
for_crc = [seq, length & 0xFF, length >> 8, action, 0,
p1, 0, p2, 0, p3, 0, p4, 0, p5, 0]
crc = stentura._crc(for_crc)
data_crc = stentura._crc(data)
expected = ([1] + for_crc + [crc & 0xFF, crc >> 8] +
[ord(b) for b in data] + [data_crc & 0xFF, data_crc >> 8])
self.assertSequenceEqual(p, [chr(b) for b in expected])
def test_make_request(self):
buf = array.array('B')
seq = 2
action = stentura._OPEN
p1, p2, p3, p4, p5 = 1, 2, 3, 4, 5
p = stentura._make_request(buf, action, seq, p1, p2, p3, p4, p5)
for_crc = [seq, 18, 0, action, 0, p1, 0, p2, 0, p3, 0, p4, 0, p5, 0]
crc = stentura._crc(for_crc)
expected = [1] + for_crc + [crc & 0xFF, crc >> 8]
self.assertSequenceEqual(p, [chr(b) for b in expected])
# Now with data.
data = 'Testing Testing 123'
p = stentura._make_request(buf, action, seq, p1, p2, p3, p4, p5, data)
length = 18 + len(data) + 2
for_crc = [seq, length & 0xFF, length >> 8, action, 0,
p1, 0, p2, 0, p3, 0, p4, 0, p5, 0]
crc = stentura._crc(for_crc)
data_crc = stentura._crc(data)
expected = ([1] + for_crc + [crc & 0xFF, crc >> 8] +
[ord(b) for b in data] + [data_crc & 0xFF, data_crc >> 8])
self.assertSequenceEqual(p, [chr(b) for b in expected])
def test_crc(self):
data = [ord(x) for x in '123456789']
self.assertEqual(stentura._crc(data), 0xBB3D)
def test_crc(self):
data = [ord(x) for x in '123456789']
self.assertEqual(stentura._crc(data), 0xBB3D)
