#
# This file is part of the PyMeasure package.
#
# Copyright (c) 2013-2024 PyMeasure Developers
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# of this software and associated documentation files (the "Software"), to deal
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import pytest

from pymeasure.test import expected_protocol
from pymeasure.instruments.tdk.tdk_gen40_38 import TDK_Gen40_38


def test_init():
    with expected_protocol(
            TDK_Gen40_38,
            [(b"ADR 6", b"OK")],
    ):
        pass  # Verify the expected communication.


@pytest.mark.parametrize("volt",
                         (b"10", b"20", b"40"))
def test_voltage_setpoint(volt):
    with expected_protocol(
            TDK_Gen40_38,
            [(b"ADR 6", b"OK"),
             (b"PV " + volt, b"OK"),
             (b"PV?", volt)]
    ) as instr:
        instr.voltage_setpoint = float(volt)
        assert instr.voltage_setpoint == float(volt)


def test_invalid_voltage():
    with pytest.raises(ValueError):
        with expected_protocol(
                TDK_Gen40_38,
                [(b"ADR 6", b"OK"),
                 (b"PV 60", b"OK"), ]
        ) as instr:
            instr.voltage_setpoint = 60


def test_invalid_current_setpoint():
    with pytest.raises(ValueError):
        with expected_protocol(
                TDK_Gen40_38,
                [(b"ADR 6", b"OK"),
                 (b"PC 50", b"OK"), ]
        ) as instr:
            instr.current_setpoint = 50