def test_tip_tracking_chain(local_test_pipette, robot):
trash, tiprack1, tiprack2, plate, p200 = local_test_pipette
# TODO (ben 20171130): revise this test to make more sense in the
# context of required tip pick_up/drop sequencing, etc.
total_tips_per_plate = 4
tiprack1 = generate_plate(total_tips_per_plate, 2, (5, 5), (0, 0), 5)
tiprack2 = generate_plate(total_tips_per_plate, 2, (5, 5), (0, 0), 5)
robot._deck['1'].add(tiprack1, 'tiprack1')
robot._deck['2'].add(tiprack2, 'tiprack2')
p200 = Pipette(robot,
mount='right',
tip_racks=[tiprack1, tiprack2],
trash_container=tiprack1,
name='pipette-for-transfer-tests',
max_volume=200,
ul_per_mm=18.5)
p200.move_to = mock.Mock()
for _ in range(0, total_tips_per_plate * 2):
p200.pick_up_tip()
p200.tip_attached = False # prior expectation, for test only
expected = []
for i in range(0, total_tips_per_plate):
expected.extend(build_pick_up_tip(p200, tiprack1[i]))
for i in range(0, total_tips_per_plate):
expected.extend(build_pick_up_tip(p200, tiprack2[i]))
assert p200.move_to.mock_calls == expected
# test then when we go over the total number of tips,
# Pipette raises a RuntimeWarning
robot.clear_commands()
p200.reset()
for _ in range(0, total_tips_per_plate * 2):
p200.pick_up_tip()
p200.tip_attached = False # prior expectation, for test only
with pytest.raises(RuntimeWarning):
p200.pick_up_tip()
def local_test_pipette(robot):
trash = containers_load(robot, 'point', '1')
tiprack1 = containers_load(robot, 'tiprack-10ul', '5')
tiprack2 = containers_load(robot, 'tiprack-10ul', '8')
plate = containers_load(robot, '96-flat', '4')
p200 = Pipette(
robot,
ul_per_mm=18.5,
trash_container=trash,
tip_racks=[tiprack1, tiprack2],
max_volume=200,
min_volume=10, # These are variable
mount='left',
channels=1,
name='other-pipette-for-transfer-tests')
p200.reset()
p200.calibrate_plunger(top=0, bottom=10, blow_out=12, drop_tip=13)
robot.home()
return trash, tiprack1, tiprack2, plate, p200