def test_read_write_array(self):
write_value = tuple(range(5))
ads.read_write(
self.endpoint, index_group=constants.INDEXGROUP_DATA,
index_offset=1, plc_read_datatype=constants.PLCTYPE_UDINT,
value=write_value, plc_write_datatype=constants.PLCTYPE_UDINT * 5
)
# Retrieve list of received requests from server
requests = self.test_server.request_history
# Check the value received by the server
received_value = struct.unpack('<IIIII', requests[0].ams_header.data[16:])
self.assertEqual(write_value, received_value)
def test_read_write(self):
write_value = 100
read_value = ads.read_write(self.endpoint,
index_group=constants.INDEXGROUP_DATA,
index_offset=1,
plc_read_datatype=constants.PLCTYPE_UDINT,
value=write_value,
plc_write_datatype=constants.PLCTYPE_UDINT)
# Retrieve list of received requests from server
requests = self.test_server.request_history
# Assert that the server received a request
self.assertEqual(len(requests), 1)
# Assert that the server received the correct command
self.assert_command_id(requests[0], constants.ADSCOMMAND_READWRITE)
# Check the value received by the server
received_value = struct.unpack('<I',
requests[0].ams_header.data[16:])[0]
self.assertEqual(write_value, received_value)
# Check read value returned by server:
# Test server just returns repeated bytes of 0x0F terminated with 0x00
expected_result = struct.unpack('<I',
'\x0F\x0F\x0F\x00'.encode('utf-8'))[0]
self.assertEqual(read_value, expected_result)
def test_read_write(self):
write_value = 100
read_value = ads.read_write(
self.endpoint, index_group=constants.INDEXGROUP_DATA,
index_offset=1, plc_read_datatype=constants.PLCTYPE_UDINT,
value=write_value, plc_write_datatype=constants.PLCTYPE_UDINT
)
# Retrieve list of received requests from server
requests = self.test_server.request_history
# Assert that the server received a request
self.assertEqual(len(requests), 1)
# Assert that the server received the correct command
self.assert_command_id(requests[0], constants.ADSCOMMAND_READWRITE)
# Check the value received by the server
received_value = struct.unpack('<I', requests[0].ams_header.data[16:])[0]
self.assertEqual(write_value, received_value)
# Check read value returned by server:
# Test server just returns repeated bytes of 0x0F terminated with 0x00
expected_result = struct.unpack('<I', '\x0F\x0F\x0F\x00'.encode('utf-8'))[0]
self.assertEqual(read_value, expected_result)
def test_read_write_array(self):
write_value = tuple(range(5))
ads.read_write(self.endpoint,
index_group=constants.INDEXGROUP_DATA,
index_offset=1,
plc_read_datatype=constants.PLCTYPE_UDINT,
value=write_value,
plc_write_datatype=constants.PLCTYPE_UDINT * 5)
# Retrieve list of received requests from server
requests = self.test_server.request_history
# Check the value received by the server
received_value = struct.unpack('<IIIII',
requests[0].ams_header.data[16:])
self.assertEqual(write_value, received_value)
def test_read_write_struct(self):
write_value = _Struct(-123, 456)
ads.read_write(
self.endpoint,
index_group=constants.INDEXGROUP_DATA,
index_offset=1,
plc_read_datatype=_Struct,
value=write_value,
plc_write_datatype=_Struct,
)
# Retrieve list of received requests from server
requests = self.test_server.request_history
# Check the value received by the server
received_value = _Struct.from_buffer_copy(requests[0].ams_header.data[16:])
self.assertEqual(write_value.x, received_value.x)
self.assertEqual(write_value.y, received_value.y)