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"""Test server context."""
import pytest
from pymodbus.datastore import ModbusServerContext, ModbusSlaveContext
from pymodbus.exceptions import NoSuchSlaveException
class TestServerSingleContext:
"""This is the test for the pymodbus.datastore.ModbusServerContext using a single slave context."""
slave = ModbusSlaveContext()
context = None
def setup_method(self):
"""Set up the test environment."""
self.context = ModbusServerContext(slaves=self.slave, single=True)
def test_single_context_gets(self):
"""Test getting on a single context."""
for dev_id in range(0, 0xFF):
assert self.slave == self.context[dev_id]
def test_single_context_deletes(self):
"""Test removing on multiple context."""
def _test():
del self.context[0x00]
with pytest.raises(NoSuchSlaveException):
_test()
def test_single_context_iter(self):
"""Test iterating over a single context."""
expected = (0, self.slave)
for slave in self.context:
assert slave == expected
def test_single_context_default(self):
"""Test that the single context default values work."""
self.context = ModbusServerContext()
slave = self.context[0x00]
assert not slave
def test_single_context_set(self):
"""Test a setting a single slave context."""
slave = ModbusSlaveContext()
self.context[0x00] = slave
actual = self.context[0x00]
assert slave == actual
def test_single_context_register(self):
"""Test single context register."""
request_db = [1, 2, 3]
slave = ModbusSlaveContext()
slave.register(0xFF, "custom_request", request_db)
assert slave.store["custom_request"] == request_db
assert slave.decode(0xFF) == "custom_request"
class TestServerMultipleContext:
"""This is the test for the pymodbus.datastore.ModbusServerContext using multiple slave contexts."""
slaves = None
context = None
def setup_method(self):
"""Set up the test environment."""
self.slaves = {id: ModbusSlaveContext() for id in range(10)}
self.context = ModbusServerContext(slaves=self.slaves, single=False)
def test_multiple_context_gets(self):
"""Test getting on multiple context."""
for dev_id in range(0, 10):
assert self.slaves[dev_id] == self.context[dev_id]
def test_multiple_context_deletes(self):
"""Test removing on multiple context."""
del self.context[0x00]
with pytest.raises(NoSuchSlaveException):
self.context[0x00]()
def test_multiple_context_iter(self):
"""Test iterating over multiple context."""
for dev_id, slave in self.context:
assert slave == self.slaves[dev_id]
assert dev_id in self.context
def test_multiple_context_default(self):
"""Test that the multiple context default values work."""
self.context = ModbusServerContext(single=False)
with pytest.raises(NoSuchSlaveException):
self.context[0x00]()
def test_multiple_context_set(self):
"""Test a setting multiple slave contexts."""
slaves = {id: ModbusSlaveContext() for id in range(10)}
for dev_id, slave in iter(slaves.items()):
self.context[dev_id] = slave
for dev_id, slave in iter(slaves.items()):
actual = self.context[dev_id]
assert slave == actual
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