def test_scope_connection(self, make_reseted_cleared_scope):
bad_resource = "USB0::10893::45848::MY12345678::0::INSTR"
# The pure python VISA library (pyvisa-py) raises a ValueError while the PyVISA library raises a VisaIOError.
with pytest.raises((ValueError, VisaIOError)):
scope = KeysightDSOX1102G(bad_resource)
class TestKeysightDSOX1102G:
"""
Unit tests for KeysightDSOX1102G class.
This test suite, needs the following setup to work properly:
- A KeysightDSOX1102G device should be connected to the computer;
- The device's address must be set in the RESOURCE constant;
- A probe on Channel 1 must be connected to the Demo output of the oscilloscope.
"""
##################################################
# KeysightDSOX1102G device address goes here:
RESOURCE = "USB0::10893::6039::CN57266430::INSTR"
##################################################
#########################
# PARAMETRIZATION CASES #
#########################
BOOLEANS = [False, True]
CHANNEL_COUPLINGS = ["ac", "dc"]
CHANNEL_LABELS = [["label", "LABEL"], ["quite long label", "QUITE LONG"],
[12345, "12345"]]
TIMEBASE_MODES = ["main", "window", "xy", "roll"]
ACQUISITION_TYPES = ["normal", "average", "hresolution", "peak"]
ACQUISITION_MODES = ["realtime", "segmented"]
DIGITIZE_SOURCES = ["channel1", "channel2", "function", "math", "fft",
"abus", "ext"]
WAVEFORM_POINTS_MODES = ["normal", "maximum", "raw"]
WAVEFORM_POINTS = [100, 250, 500, 1000, 2000, 5000, 10000, 20000, 50000,
62500]
WAVEFORM_SOURCES = ["channel1", "channel2", "function", "fft", "wmemory1",
"wmemory2", "ext"]
WAVEFORM_FORMATS = ["ascii", "word", "byte"]
DOWNLOAD_SOURCES = ["channel1", "channel2", "function", "fft", "ext"]
CHANNELS = [1, 2]
SCOPE = KeysightDSOX1102G(RESOURCE)
############
# FIXTURES #
############
@pytest.fixture
def make_reseted_cleared_scope(self):
self.SCOPE.reset()
self.SCOPE.clear_status()
return self.SCOPE
#########
# TESTS #
#########
def test_scope_connection(self, make_reseted_cleared_scope):
bad_resource = "USB0::10893::45848::MY12345678::0::INSTR"
# The pure python VISA library (pyvisa-py) raises a ValueError while the PyVISA library raises a VisaIOError.
with pytest.raises((ValueError, VisaIOError)):
scope = KeysightDSOX1102G(bad_resource)
def test_autoscale(self, make_reseted_cleared_scope):
scope = make_reseted_cleared_scope
scope.write(":timebase:position 1")
# Autoscale should turn off the zoomed (delayed) time mode
assert scope.ask(":timebase:position?") == "+1.000000000000E+00\n"
scope.autoscale()
assert scope.ask(":timebase:position?") != "+1.000000000000E+00\n"
# Channel
def test_ch_current_configuration(self, make_reseted_cleared_scope):
scope = make_reseted_cleared_scope
expected = {"OFFS": 0.0, "COUP": "DC", "IMP": "ONEM", "DISP": True,
"BWL": False, "INV": False, "UNIT": "VOLT", "PROB": 10.0,
"PROB:SKEW": 0.0, "STYP": "SING", "CHAN": 1, "RANG": 40.0}
actual = scope.ch(1).current_configuration
assert actual == expected
@pytest.mark.parametrize("ch_number", CHANNELS)
@pytest.mark.parametrize("case", BOOLEANS)
def test_ch_bwlimit(self, make_reseted_cleared_scope, ch_number, case):
scope = make_reseted_cleared_scope
scope.ch(ch_number).bwlimit = case
assert scope.ch(ch_number).bwlimit == case
@pytest.mark.parametrize("ch_number", CHANNELS)
@pytest.mark.parametrize("case", CHANNEL_COUPLINGS)
def test_ch_coupling(self, make_reseted_cleared_scope, ch_number, case):
scope = make_reseted_cleared_scope
scope.ch(ch_number).coupling = case
assert scope.ch(ch_number).coupling == case
@pytest.mark.parametrize("ch_number", CHANNELS)
@pytest.mark.parametrize("case", BOOLEANS)
def test_ch_display(self, make_reseted_cleared_scope, ch_number, case):
scope = make_reseted_cleared_scope
scope.ch(ch_number).display = case
assert scope.ch(ch_number).display == case
@pytest.mark.parametrize("ch_number", CHANNELS)
@pytest.mark.parametrize("case", BOOLEANS)
def test_ch_invert(self, make_reseted_cleared_scope, ch_number, case):
scope = make_reseted_cleared_scope
scope.ch(ch_number).invert = case
assert scope.ch(ch_number).invert == case
@pytest.mark.parametrize("ch_number", CHANNELS)
@pytest.mark.parametrize("case, expected", CHANNEL_LABELS)
def test_ch_label(self, make_reseted_cleared_scope, ch_number, case, expected):
scope = make_reseted_cleared_scope
scope.ch(ch_number).label = case
assert scope.ch(ch_number).label == expected