def test_with_empty_sensors():
adc = ADCDevice(hardware_required=False, **{
"input_impedance": 1000.5,
"bit_rate": 1,
"sensors": {}
})
assert isinstance(adc, ADCDevice)
assert adc.readings() == {}
def test_with_valid_voltage_channel():
config = {
"device": "ADCPi",
"input_impedance": 10,
"bit_rate": 12,
"sensors": {
"your label": {
"type": "voltage",
"channel": 1,
"zero_point": 0,
"resistance": 50.5
}
}
}
adc = ADCDevice(hardware_required=False, **config)
assert len(adc.sensors) == 1
sensor = adc.sensors['your label']
assert isinstance(sensor, ADCSensor)
assert sensor.type == "voltage"
assert sensor.sensitivity == 6.05
assert str(adc) == "ADC(ch_1: 'your label')"
assert vars(sensor) == {
"type": "voltage",
"channel": 1,
"zero_point": 0.0,
"ref_channel": None,
"resistance": 50.5,
"sensitivity": 6.05
}
assert sensor.config() == {
"type": "voltage",
"channel": 1,
"zero_point": 0.0,
"ref_channel": None,
"resistance": 50.5,
}
assert adc.config() == {
"device": "ADCPi",
"address1": 104,
"address2": 105,
"input_impedance": 10.0,
"bit_rate": 12,
"sensors": {
"your label": {
"type": "voltage",
"channel": 1,
"ref_channel": None,
"zero_point": 0,
"resistance": 50.5
}
}
}
def test_with_missing_sensors():
with pytest.raises(ADCError) as e:
adc = ADCDevice(**{
"input_impedance": "test",
"bit_rate": "lots"
})
assert "Missing parameter: 'sensors'" in str(e)
def test_with_invalid_sensors():
with pytest.raises(ADCError) as e:
adc = ADCDevice(**{
"input_impedance": 1000,
"bit_rate": 16,
"sensors": "this is invalid"
})
assert "'sensors' must be a dictionary" in str(e)
def test_with_invalid_bit_rate():
with pytest.raises(ADCError) as e:
adc = ADCDevice(**{
"input_impedance": 1000,
"bit_rate": "lots",
"sensors": {}
})
assert "bit_rate: 'lots' must be an integer" in str(e)
def test_with_invalid_impedance():
with pytest.raises(ADCError) as e:
adc = ADCDevice(**{
"input_impedance": "test",
"bit_rate": "lots",
"sensors": {}
})
assert "input_impedance: 'test' must be a number" in str(e)
def test_with_missing_channel():
with pytest.raises(ADCError) as e:
adc = ADCDevice(hardware_required=False, **{
"input_impedance": 1.5,
"bit_rate": 200000,
"sensors": {
"your label": {}
}
})
assert "channel ['your label']: missing required field 'channel'" in str(e)
def test_with_missing_zero_point():
with pytest.raises(ADCError) as e:
adc = ADCDevice(hardware_required=False, **{
"input_impedance": 1.5,
"bit_rate": 1.5,
"sensors": {
"your label": {
"channel": 1,
"type": "voltage",
}
}
})
assert "channel ['your label']: missing required field 'zero_point'" in str(e)
def test_with_invalid_current_channel():
with pytest.raises(ADCError) as e:
adc = ADCDevice(hardware_required=False, **{
"input_impedance": 1.5,
"bit_rate": 12,
"sensors": {
"your label": {
"type": "current",
"channel": 1,
"zero_point": 0
}
}
})
assert "channel ['your label']: current sensors require 'milliVoltPerAmp' field to be set" in str(e)
def test_with_invalid_voltage_channel():
with pytest.raises(ADCError) as e:
adc = ADCDevice(hardware_required=False, **{
"input_impedance": 1.5,
"bit_rate": 12,
"sensors": {
"your label": {
"type": "voltage",
"channel": 1,
"zero_point": 0
}
}
})
assert "channel ['your label']: voltage sensors require 'resistance' field to be set" in str(e)
def test_with_invalid_zero_point():
with pytest.raises(ADCError) as e:
adc = ADCDevice(hardware_required=False, **{
"input_impedance": 1.5,
"bit_rate": 12,
"sensors": {
"your label": {
"type": "voltage",
"channel": 1,
"zero_point": "needs a float"
}
}
})
assert "channel ['your label']: zero_point: 'needs a float' (expected float)" in str(e)
def test_with_valid_current_channel():
adc = ADCDevice(hardware_required=False, **{
"input_impedance": 10,
"bit_rate": 12,
"sensors": {
"your label": {
"type": "current",
"channel": 1,
"zero_point": 0,
"milliVoltPerAmp": 10000
}
}
})
assert len(adc.sensors) == 1
sensor = adc.sensors['your label']
assert isinstance(sensor, ADCSensor)
assert sensor.type == "current"
assert sensor.sensitivity == 0.1
assert str(adc) == "ADC(ch_1: 'your label')"
def test_without_config():
with pytest.raises(ADCError) as e:
adc = ADCDevice(**{})
assert "Missing parameter: 'input_impedance'" in str(e)
def test_with_missing_bit_rate():
with pytest.raises(ADCError) as e:
adc = ADCDevice(**{
"input_impedance": "test"
})
assert "Missing parameter: 'bit_rate'" in str(e)
