def test_highest_z():
deck = Deck()
fixed_trash = deck.get_fixed_trash()
assert deck.highest_z == fixed_trash.highest_z
tall_lw = labware.load(tall_lw_name, deck.position_for(1))
deck[1] = tall_lw
assert deck.highest_z == pytest.approx(tall_lw.wells()[0].top().point.z)
del deck[1]
assert deck.highest_z == fixed_trash.highest_z
mod = module_geometry.load_module(
module_geometry.TemperatureModuleModel.TEMPERATURE_V1,
deck.position_for(8))
deck[8] = mod
assert deck.highest_z == mod.highest_z
lw = labware.load(labware_name, mod.location)
mod.add_labware(lw)
deck.recalculate_high_z()
assert deck.highest_z == mod.highest_z
def test_instr_max_height():
deck = Deck()
fixed_trash = deck.get_fixed_trash()
trough = labware.load(trough_name, deck.position_for(1))
trough2 = labware.load(trough_name, deck.position_for(2))
deck[1] = trough
deck[2] = trough2
# if the highest deck height is between 1 mm and 10 mm below
# the max instrument achievable height, we use the max instrument
# height as the safe height
instr_max_height = fixed_trash.wells()[0].top().point.z + 1
height = safe_height(from_loc=trough.wells()[0].top(),
to_loc=trough2.wells()[0].top(),
deck=deck,
instr_max_height=round(instr_max_height, 2),
well_z_margin=7.0,
lw_z_margin=15.0)
assert height == round(instr_max_height, 2)
# if the highest deck height is > 10 mm below the max instrument
# height, we use the lw_z_margin instead
instr_max_height = fixed_trash.wells()[0].top().point.z + 30
height2 = safe_height(from_loc=trough.wells()[0].top(),
to_loc=trough2.wells()[0].top(),
deck=deck,
instr_max_height=round(instr_max_height, 2),
well_z_margin=7.0,
lw_z_margin=15.0)
assert height2 ==\
round(fixed_trash.wells()[0].top().point.z, 2) + 15.0
# it fails if the highest deck height is less than 1 mm below
# the max instr achievable height
instr_max_height = fixed_trash.wells()[0].top().point.z
with pytest.raises(Exception):
safe_height(from_loc=trough.wells()[0].top(),
to_loc=trough2.wells()[0].top(),
deck=deck,
instr_max_height=round(instr_max_height, 2),
well_z_margin=7.0,
lw_z_margin=15.0)