import pytest

from lab_control.jds6600 import JDS6600
from lab_control.test.mock_jds6600_device import MockJDS6600Device

@pytest.fixture
def mockDevice():
    d = MockJDS6600Device()
    yield d
    d.stop()

@pytest.fixture
def uut(mockDevice):
    uut = JDS6600(mockDevice.getPortName())
    yield uut
    uut.closePort()

def checkNumericalParameter(testValues, writeValue, valueInMock):
    for ch in JDS6600.AVAILABLE_CHANNELS:
        assert valueInMock(ch) is None

        for value in testValues:
            writeValue(ch, value)
            assert valueInMock(ch) == value

def checkInvalidNumericalParameter(testValues, writeValue, valueInMock):
    for ch in JDS6600.AVAILABLE_CHANNELS:
        for value in testValues:
            with pytest.raises(AssertionError):
                writeValue(ch, value)

def test_serialConfiguration(mockDevice):
    with pytest.raises(AssertionError):
        mockDevice.checkPortConfiguration()

    uut = JDS6600(mockDevice.getPortName())
    mockDevice.checkPortConfiguration()

def test_channelOnAndOff(uut, mockDevice):
    for ch in JDS6600.AVAILABLE_CHANNELS:
        assert not mockDevice.isOn(ch)
        uut.setOn(ch)
        assert mockDevice.isOn(ch)
        uut.setOff(ch)
        assert not mockDevice.isOn(ch)

def test_setFrequency(uut, mockDevice):
    checkNumericalParameter([0.0, 100.0, 100000.0, 60000000.0], uut.setFrequency, mockDevice.getFrequency)
    
def test_setInvalidFrequency(uut, mockDevice):
    checkInvalidNumericalParameter([-10.0, 60000000.1, None], uut.setFrequency, mockDevice.getFrequency)

def test_setAmplitude(uut, mockDevice):
    checkNumericalParameter([0.0, 0.1, 1.0, 10.0, 20.0], uut.setAmplitude, mockDevice.getAmplitude)

def test_setInvalidAmplitude(uut, mockDevice):
    checkInvalidNumericalParameter([-0.1, -10.0, 20.1, None], uut.setAmplitude, mockDevice.getAmplitude)

def test_setFunction(uut, mockDevice):
    checkNumericalParameter(range(0, 17), uut.setFunction, mockDevice.getFunction)

def test_setInvalidFunction(uut, mockDevice):
    checkInvalidNumericalParameter([-1, -10, 17, 20, None], uut.setFunction, mockDevice.getFunction)

def test_invalidChannel(uut):
    testMethods = [uut.setFrequency, uut.setAmplitude, uut.setFunction]
    for ch in [-1, 0, 3, None]:
        for method in testMethods:
            with pytest.raises(AssertionError):
                method(ch, 0)

        with pytest.raises(AssertionError):
            uut.setOn(ch)

        with pytest.raises(AssertionError):
            uut.setOff(ch)

def test_setFrequencySingleFailure(uut, mockDevice):
    testFrequency = 1000.0
    testChannel = 1
    assert mockDevice.getFrequency(testChannel) is None

    mockDevice.injectFailures(1)
    uut.setFrequency(testChannel, testFrequency)

    assert mockDevice.getFrequency(testChannel) == testFrequency

def test_setFrequencyMultipleFailures(uut, mockDevice):
    testFrequency = 1000.0
    testChannel = 1
    assert mockDevice.getFrequency(testChannel) is None

    mockDevice.injectFailures(2)
    uut.setFrequency(testChannel, testFrequency)

    assert mockDevice.getFrequency(testChannel) == 0.0