def session(request):
s = Session(add_all=False)
if s.scan() == 0:
# no devices plugged in
raise ValueError
s.add(s.available_devices[0])
yield s
# force session destruction
s._close()
def test_read_continuous_dataflow_raises():
"""Verify workflows that lead to data flow issues."""
# create a session that doesn't ignore data flow issues
session = Session(add_all=False, ignore_dataflow=False)
session.scan()
session.add(session.available_devices[0])
device = session.devices[0]
session.start(0)
time.sleep(.5)
with pytest.raises(SampleDrop):
device.read(1000)
# force session destruction
session._close()
