def test_invalid_string_converter(self):
with self.assertRaises(ValueError) as ex:
util.to_ascii_block([1, 2], 'm')
self.assertIn("unsupported format character", ex.exception.args[0])
with self.assertRaises(ValueError) as ex:
util.from_ascii_block("1,2,3", 'm')
self.assertIn("Invalid code for converter", ex.exception.args[0])
def test_invalid_string_converter(self):
with pytest.raises(ValueError) as ex:
util.to_ascii_block([1, 2], "m")
assert "unsupported format character" in ex.exconly()
with pytest.raises(ValueError) as ex:
util.from_ascii_block("1,2,3", "m")
assert "Invalid code for converter" in ex.exconly()
def test_function_converter(self):
values = list(range(99))
msg = 'block=ascii'
tb = lambda values: util.to_ascii_block(values, str, ':'.join)
fb = lambda block, cont: util.from_ascii_block(block, int, lambda s: s.
split(':'), cont)
self.round_trip_block_converstion(values, tb, fb, msg)
def test_function_separator(self):
values = list(range(99))
fmt = "d"
msg = 'block=ascii, fmt=%s' % fmt
tb = lambda values: util.to_ascii_block(values, fmt, ':'.join)
fb = lambda block, cont: util.from_ascii_block(block, fmt, lambda s: s.
split(':'), cont)
self.round_trip_block_converstion(values, tb, fb, msg)
def test_integer_ascii_block(self):
values = list(range(99))
for fmt in "d":
msg = "block=%s, fmt=%s"
msg = msg % ("ascii", fmt)
tb = lambda values: util.to_ascii_block(values, fmt, ",")
fb = lambda block, cont: util.from_ascii_block(block, fmt, ",", cont)
self.round_trip_block_conversion(values, tb, fb, msg)
def test_integer_ascii_block(self):
values = list(range(99))
for fmt in 'd':
msg = 'block=%s, fmt=%s'
msg = msg % ('ascii', fmt)
tb = lambda values: util.to_ascii_block(values, fmt, ',')
fb = lambda block, cont: util.from_ascii_block(
block, fmt, ',', cont)
self.round_trip_block_converstion(values, tb, fb, msg)
def test_integer_ascii_block(self):
values = list(range(99))
for fmt in 'd':
msg = 'block=%s, fmt=%s'
msg = msg % ('ascii', fmt)
tb = lambda values: util.to_ascii_block(values, fmt, ',')
fb = lambda block, cont: util.from_ascii_block(block, fmt, ',',
cont)
self.round_trip_block_converstion(values, tb, fb, msg)
def query_ascii_values(self,
command,
converter='f',
separator=',',
container=list,
bufsize=None):
"""Write a string message to device and return values as iterable.
Args:
command: Message to be sent to device.
values: Data to be written to device (as an interable)
converter: String format code to be used to convert values.
separator: Separator between values -- data.split(separator).
container: Iterable type to use for output.
bufsize: Number of bytes to read from instrument. Defaults to resource
bufsize if None.
Returns:
Iterable of values converted from instrument response.
"""
if bufsize is None:
bufsize = self.bufsize
ascii = self.query(command, bufsize=bufsize)
return from_ascii_block(ascii, convereter, separator, container)
def query_ascii_values(self, message, converter='f', separator=',',
container=list):
''' Taken from pvisa.'''
block = self.query(message)
return from_ascii_block(block, converter, separator, container)
