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80 lines
2.8 KiB
Python
80 lines
2.8 KiB
Python
"""A modbus_controller cannot poll the broadcast address (0) unless allow_broadcast_read says the
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device answers it."""
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import pytest
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from esphome import config_validation as cv
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from esphome.components import modbus
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from esphome.components.modbus_controller import CONFIG_SCHEMA
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from esphome.const import CONF_ADDRESS
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from esphome.types import ConfigType
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def _controller(address: int, **extra: object) -> ConfigType:
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return CONFIG_SCHEMA({modbus.CONF_MODBUS_ID: "bus", CONF_ADDRESS: address, **extra})
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def test_address_zero_rejected_by_default() -> None:
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with pytest.raises(cv.Invalid, match="broadcast address"):
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_controller(0)
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def test_address_zero_accepted_with_allow_broadcast_read() -> None:
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config = _controller(0, **{modbus.CONF_ALLOW_BROADCAST_READ: True})
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assert config[CONF_ADDRESS] == 0
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assert config[modbus.CONF_ALLOW_BROADCAST_READ] is True
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def test_allow_broadcast_read_defaults_false() -> None:
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assert _controller(1)[modbus.CONF_ALLOW_BROADCAST_READ] is False
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def test_writer_entity_takes_expect_broadcast_write_response() -> None:
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# The write-side option lives on the writing platforms, not the controller.
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from esphome.components.modbus_controller.const import CONF_MODBUS_CONTROLLER_ID
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from esphome.components.modbus_controller.switch import (
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CONFIG_SCHEMA as SWITCH_SCHEMA,
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)
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from esphome.const import CONF_NAME
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key = modbus.CONF_EXPECT_BROADCAST_WRITE_RESPONSE
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base = {
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CONF_MODBUS_CONTROLLER_ID: "ctl",
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CONF_NAME: "Switch",
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"register_type": "coil",
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CONF_ADDRESS: 0x20,
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}
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assert SWITCH_SCHEMA(base)[key] is False
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assert SWITCH_SCHEMA({**base, CONF_NAME: "Switch 2", key: True})[key] is True
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with pytest.raises(cv.Invalid):
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CONFIG_SCHEMA({modbus.CONF_MODBUS_ID: "bus", CONF_ADDRESS: 1, key: True})
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def test_allow_broadcast_read_requires_address_zero() -> None:
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# The option only means something at address 0; elsewhere it would be silently inert.
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with pytest.raises(cv.Invalid, match="only applies to the broadcast address"):
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_controller(5, **{modbus.CONF_ALLOW_BROADCAST_READ: True})
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def test_add_command_options_skips_defaults() -> None:
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# The setter is only emitted when an option differs from its C++ default.
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import esphome.codegen as cg
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from esphome.const import CONF_CONTINUOUS
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var = cg.MockObj("ctl")
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emitted: list = []
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original = cg.add
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cg.add = emitted.append
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try:
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modbus.add_command_options(
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var, "set_read_options", {CONF_CONTINUOUS: False}, direction="read"
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)
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assert emitted == []
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modbus.add_command_options(
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var, "set_read_options", {CONF_CONTINUOUS: True}, direction="read"
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)
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assert len(emitted) == 1
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assert "set_read_options" in str(emitted[0])
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finally:
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cg.add = original
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