def test_spills_with_and_notwith_substance(self):
'''
datastructure only adds substance/spills if substance is not None
deleting spill resets datastructure.
- the spills in _substances_spills 'is' the same as the spills
in sc.spills - same object
'''
sc = SpillContainer()
sc.spills += [
Spill(Release(datetime.now(), 10),
element_type=floating(substance=None),
name='spill0'),
Spill(Release(datetime.now(), 10),
element_type=floating(substance=test_oil),
name='spill1')
]
assert len(sc.get_substances()) == 2
sc.prepare_for_model_run()
all_spills = list(chain.from_iterable(sc._substances_spills.spills))
assert len(all_spills) == len(sc.spills)
for spill in all_spills:
assert sc.spills[spill.id] is spill
del sc.spills[-1]
assert len(sc.get_substances()) == 1
assert len(sc.iterspillsbysubstance()) == 1
def test_num_elements_to_release(self, curr_time):
rel = Release(self.rel_time, 0)
rel.num_elements_to_release(curr_time, 900)
if curr_time <= rel.release_time:
assert not rel.start_time_invalid
else:
assert rel.start_time_invalid
def test_num_elements_to_release(self, curr_time):
rel = Release(self.rel_time, 0)
rel.num_elements_to_release(curr_time, 900)
if curr_time <= rel.release_time:
assert not rel.start_time_invalid
else:
assert rel.start_time_invalid
def test_init_exceptions():
with raises(TypeError):
Spill(Release(datetime.now()), amount=10)
with raises(ValueError):
Spill(Release(release_time=datetime.now()),
element_type=floating(windage_range=(-1, 0)))
with raises(ValueError):
Spill(Release(release_time=datetime.now()),
element_type=floating(windage_persist=0))
def test_total_mass():
'''
test total_mass attribute
'''
sc = SpillContainer()
sc.spills += [
Spill(Release(datetime.now(), 10), amount=100, units='kg'),
Spill(Release(datetime.now(), 1000), amount=1234, units='kg'),
Spill(Release(datetime.now(), 100))
]
assert sc.total_mass == 100 + 1234
sc.spills.clear()
sc.spills += [Spill(Release(datetime.now(), 10))]
assert sc.total_mass is None
def test_validate_model_spills_time_mismatch_warning(self):
'''
test warning messages output for no spills and model start time
mismatch with release time
'''
model = Model(start_time=self.start_time)
(msgs, isvalid) = model.check_inputs()
print model.environment
print msgs, isvalid
assert len(msgs) == 1 and isvalid
assert ('{0} contains no spills'.format(model.name) in msgs[0])
model.spills += Spill(Release(self.start_time + timedelta(hours=1), 1))
(msgs, isvalid) = model.check_inputs()
assert len(msgs) == 1 and isvalid
assert ('{} has release time after model start time'.format(
model.spills[0].name) in msgs[0])
model.spills[0].release_time = self.start_time - timedelta(hours=1)
(msgs, isvalid) = model.check_inputs()
assert len(msgs) == 1 and not isvalid
assert ('{} has release time before model start time'.format(
model.spills[0].name) in msgs[0])
def test_spills_same_substance_init(self):
sc = SpillContainer()
et = floating(substance=test_oil)
sp_add = [
point_line_release_spill(3, (1, 1, 1),
datetime.now(),
element_type=et),
Spill(Release(datetime.now(), 10),
amount=100,
units='kg',
element_type=floating(substance=test_oil)),
Spill(Release(datetime.now(), 10),
element_type=floating(substance=et.substance))
]
sc.spills += sp_add
assert len(sc.get_substances()) == 1
sc.prepare_for_model_run()
assert all([sp_add == spills for spills in sc.iterspillsbysubstance()])
def test_spills_different_substance_init(self):
sc = SpillContainer()
splls0 = [
point_line_release_spill(
3, (1, 1, 1),
datetime.now(),
element_type=floating(substance=test_oil)),
Spill(Release(datetime.now(), 10),
element_type=floating(substance=test_oil)),
]
sc.spills += splls0
splls1 = [
Spill(Release(datetime.now(), 10),
element_type=floating(substance='oil_crude'))
]
sc.spills += splls1
assert (len(sc.get_substances()) == 2
and len(sc.iterspillsbysubstance()) == 2)
def make_model_incomplete_waves(self):
'''
create a model with waves objects with no referenced wind, water.
Include Spill so we don't get warnings for it
'''
model = Model(start_time=self.start_time)
model.spills += Spill(Release(self.start_time, 1))
waves = Waves()
model.environment += waves
return (model, waves)
def test_copy():
"""
TODO: how should this work
"""
sp1 = Spill(Release(release_time=datetime.now().replace(microsecond=0)))
sp2 = copy.copy(sp1)
assert sp1 is not sp2
assert sp1.id != sp2.id
# try deleting the copy, and see if any errors result
del sp1
del sp2
def test_no_substance(self):
'''
no substance means run trajectory without an OilProps object/without
weathering is one reason to do this
'''
sc = SpillContainer()
sc.spills += [
Spill(Release(datetime.now(), 10),
element_type=floating(substance=None),
name='spill0'),
Spill(Release(datetime.now(), 10),
element_type=floating(substance=None),
name='spill1')
]
assert len(sc.itersubstancedata('mass')) == 0
assert len(sc.get_substances()) == 1
# iterspillsbysubstance() iterates through all the spills associated
# with each substance including the spills where substance is None
assert len(sc.iterspillsbysubstance()) == 1
assert len(sc.iterspillsbysubstance()) == 1
def test_rewind(self):
rel = Release(self.rel_time, 10)
rel.num_elements_to_release(self.rel_time, 900)
assert not rel.start_time_invalid
# change attribute manually for test
rel.num_released = rel.num_elements
rel.rewind()
assert rel.start_time_invalid is None
assert rel.num_released == 0
def test_deepcopy():
"""
tests that a deepcopy results in a copy so objects are not the same
todo: how should this work?
"""
sp1 = Spill(Release(release_time=datetime.now().replace(microsecond=0)))
sp2 = copy.deepcopy(sp1)
assert sp1 is not sp2
assert sp1.id != sp2.id
# try deleting the copy, and see if any errors result
del sp2
del sp1
def test_var_attr_spill_num(output_filename):
'''
call prepare_for_model_run and ensure the spill_num attributes are written
correctly. Just a simple test that creates two models and adds a spill to
each. It then runs both models and checks that the correct spill_name
exists in 'spills_map' attribute for NetCDF output variable 'spill_num'
'''
def _make_run_model(spill, nc_name):
'internal function'
release_time = spill.release.release_time
m = Model(start_time=release_time)
m.outputters += NetCDFOutput(nc_name)
m.spills += spill
_run_model(m)
return m
def _del_nc_file(nc_name):
try:
os.remove(nc_name)
except:
pass
here = os.path.dirname(__file__)
spills = []
model = []
nc_name = []
for ix in (0, 1):
spills.append(
Spill(Release(datetime.now()), name='m{0}_spill'.format(ix)))
nc_name.append(os.path.join(here, 'temp_m{0}.nc'.format(ix)))
_del_nc_file(nc_name[ix])
_make_run_model(spills[ix], nc_name[ix])
# open and check the correct spill_name exists in each netcdf file
for ix, f_ in enumerate(nc_name):
with nc.Dataset(f_) as data:
assert (spills[ix].name in data.variables['spill_num'].spills_map)
if ix == 0:
assert (spills[1].name
not in data.variables['spill_num'].spills_map)
if ix == 1:
assert (spills[0].name
not in data.variables['spill_num'].spills_map)
_del_nc_file(nc_name[ix])
def test_rewind(self):
rel = Release(self.rel_time, 10)
rel.num_elements_to_release(self.rel_time, 900)
assert not rel.start_time_invalid
# change attribute manually for test
rel.num_released = rel.num_elements
rel.rewind()
assert rel.start_time_invalid
assert rel.num_released == 0
def test_initialize_InitRiseVelFromDropletDist_weibull():
'Test initialize data_arrays with Weibull dist'
num_elems = 10
data_arrays = mock_append_data_arrays(rise_vel_diameter_array, num_elems)
substance = get_oil_props(oil)
spill = Spill(Release(datetime.now()), water=Water())
# (.001*.2) / (.693 ** (1 / 1.8)) - smaller droplet test case, in mm
# so multiply by .001
dist = WeibullDistribution(alpha=1.8, lambda_=.000248)
fcn = InitRiseVelFromDropletSizeFromDist(dist)
fcn.initialize(num_elems, spill, data_arrays, substance)
assert_dataarray_shape_size(rise_vel_array, data_arrays, num_elems)
assert np.all(0 != data_arrays['rise_vel'])
assert np.all(0 != data_arrays['droplet_diameter'])
def test_init(element_type, amount):
'''
Test various initializations
'''
spill = Spill(Release(release_time=datetime.now()),
element_type=element_type,
amount=amount,
units='kg')
if element_type is None:
assert np.all(spill.windage_range == (0.01, 0.04))
assert spill.windage_persist == 900
# no need to test this in spill -- it shouldn't know about initializers
# assert len(spill.initializers) == 1 # add windages
# else:
# assert len(spill.initializers) == 0
assert spill.release_duration == 0
def test_init(element_type, amount):
'''
Test various initializtions
'''
spill = Spill(Release(release_time=datetime.now()),
element_type=element_type,
amount=amount,
units='kg')
if element_type is None:
assert np.all(spill.get('windage_range') == (0.01, 0.04))
assert (spill.get('windage_persist') == 900)
assert len(spill.get('initializers')) == 1 # add windages
else:
assert len(spill.get('initializers')) == 0
assert spill.name == 'Spill'
assert spill.get('release_duration') == 0
def test_SpillContainer_add_array_types():
'''
Test an array_type is dynamically added/subtracted from SpillContainer if
it is contained in Initailizer's array_types property.
For example:
Add 'rise_vel' initializer, InitRiseVelFromDropletSizeFromDist()) is
added to Spill's element_type object. Now, the array_types for this
initailizer are 'rise_vel' and 'droplet_diameter'. Only if a
RiseVelocityMover is added to the model in which case the Model
provides 'rise_vel' as an array_type to the SpillContainer to append
it to its own list, then the SpillContainer will also add the
'droplet_diameter' array_type that is additionally set by the
Initializer but is not explicitly required by the Mover.
'''
sc = SpillContainer()
s = Spill(Release(datetime(2014, 1, 1, 12, 0), 0))
s.set_initializer(
InitRiseVelFromDropletSizeFromDist(distribution=UniformDistribution()))
sc.spills += s
assert 'rise_vel' not in sc.array_types
assert 'droplet_diameter' not in sc.array_types
# Now say you added RiseVelocityMover and the Model collects ArrayTypes
# from all movers and passes it into SpillContainer's prepare_for_model_run
#
sc.prepare_for_model_run(array_types={'rise_vel'})
assert 'rise_vel' in sc.array_types
assert 'droplet_diameter' in sc.array_types
# calling prepare_for_model_run without different array_types keeps the
# previously added 'rise_vel' array_types - always rewind if you want to
# clear out the state and reset array_types to original data
sc.prepare_for_model_run()
assert 'rise_vel' in sc.array_types
assert 'droplet_diameter' in sc.array_types
# Now let's rewind array_types and these extra properties should disappear
# they are only added after the prepare_for_model_run step
sc.rewind()
sc.prepare_for_model_run()
assert 'rise_vel' not in sc.array_types
assert 'droplet_diameter' not in sc.array_types
def test_initialize_InitRiseVelFromDropletDist_weibull_with_min_max():
'Test initialize data_arrays with Weibull dist'
num_elems = 1000
data_arrays = mock_append_data_arrays(rise_vel_diameter_array, num_elems)
substance = get_oil_props(oil)
spill = Spill(Release(datetime.now()), water=Water())
# (.001*3.8) / (.693 ** (1 / 1.8)) - larger droplet test case, in mm
# so multiply by .001
dist = WeibullDistribution(min_=0.002, max_=0.004,
alpha=1.8, lambda_=.00456)
fcn = InitRiseVelFromDropletSizeFromDist(dist)
fcn.initialize(num_elems, spill, data_arrays, substance)
# test for the larger droplet case above
assert np.all(data_arrays['droplet_diameter'] >= .002)
# test for the larger droplet case above
assert np.all(data_arrays['droplet_diameter'] <= .004)
def test_amount_mass_vol(amount, units):
'''
ensure mass is being returned correctly when 'amount' is initialized wtih
'mass' or 'volume'
'''
spill = Spill(Release(datetime.now()),
amount=amount,
units=units,
substance=test_oil)
assert spill.amount == amount
assert spill.units == units
if units in Spill.valid_vol_units:
exp_mass = (spill.get('substance').get_density() *
uc.convert('Volume', units, 'm^3', spill.amount))
else:
exp_mass = uc.convert('Mass', units, 'kg', spill.amount)
assert spill.get_mass() == exp_mass
exp_mass_g = exp_mass * 1000
assert spill.get_mass('g') == exp_mass_g
def test_amount_mass_vol(amount, units):
'''
ensure mass is being returned correctly when 'amount' is initialized wtih
'mass' or 'volume'
'''
water = Water()
spill = Spill(Release(datetime.now()),
amount=amount,
units=units,
substance=test_oil,
water=water)
assert spill.amount == amount
assert spill.units == units
if units in Spill.valid_vol_units:
# use 15C (288.15K) for mass<=>volume conversion
exp_mass = (spill.substance.density_at_temp(288.15) *
uc.convert('Volume', units, 'm^3', spill.amount))
else:
exp_mass = uc.convert('Mass', units, 'kg', spill.amount)
assert spill.get_mass() == exp_mass
exp_mass_g = exp_mass * 1000
assert spill.get_mass('g') == exp_mass_g
def test_init(self):
rel = Release(self.rel_time, 0)
assert rel.num_elements == 0
assert rel.release_time == self.rel_time
assert rel.start_time_invalid is None
assert rel.release_duration == 0
def test_init():
Release(release_time=datetime.now())
assert data_arrays[key].shape == (num_released, ) + val.shape
""" Initializers - following are used for parameterizing tests """
fcn_list = (
InitWindages(), InitRiseVelFromDist(distribution=UniformDistribution()),
InitRiseVelFromDist(distribution=NormalDistribution(mean=0, sigma=0.1)),
InitRiseVelFromDist(distribution=LogNormalDistribution(mean=0, sigma=0.1)),
InitRiseVelFromDist(distribution=WeibullDistribution(
alpha=1.8, lambda_=(1 / (.693**(1 / 1.8))))),
InitRiseVelFromDropletSizeFromDist(NormalDistribution(mean=0, sigma=0.1)))
arrays_ = (windages, rise_vel_array, rise_vel_array, rise_vel_array,
rise_vel_array, rise_vel_diameter_array)
spill_list = (None, None, None, None, None, Spill(Release(datetime.now())))
@pytest.mark.parametrize(("fcn", "arr_types", "spill"),
zip(fcn_list, arrays_, spill_list))
def test_correct_particles_set_by_initializers(fcn, arr_types, spill):
'''
Tests that the correct elements (ones that
were released last) are initialized
'''
# let's only set the values for the last 10 elements
# this is not how it would be used, but this is just to make sure
# the values for the correct elements are set
data_arrays = mock_append_data_arrays(arr_types, num_elems)
data_arrays = mock_append_data_arrays(arr_types, num_elems, data_arrays)
substance = get_oil_props(oil)
sigma=0.1)),
InitRiseVelFromDist(distribution=LogNormalDistribution(mean=0,
sigma=0.1)),
InitRiseVelFromDist(distribution=WeibullDistribution(alpha=1.8,
lambda_=(1 / (.693 ** (1 / 1.8)))
)),
InitRiseVelFromDropletSizeFromDist(NormalDistribution(mean=0,
sigma=0.1))
)
arrays_ = (windages,
rise_vel_array, rise_vel_array, rise_vel_array, rise_vel_array,
rise_vel_diameter_array)
spill_list = (None, None, None, None, None,
Spill(Release(datetime.now()), water=Water()))
@pytest.mark.parametrize(("fcn", "arr_types", "spill"),
zip(fcn_list, arrays_, spill_list))
def test_correct_particles_set_by_initializers(fcn, arr_types, spill):
'''
Tests that the correct elements (ones that
were released last) are initialized
'''
# let's only set the values for the last 10 elements
# this is not how it would be used, but this is just to make sure
# the values for the correct elements are set
data_arrays = mock_append_data_arrays(arr_types, num_elems)
data_arrays = mock_append_data_arrays(arr_types, num_elems, data_arrays)
substance = get_oil_props(oil)
