def fake_amr_ds(fields=("Density", ), geometry="cartesian", particles=0):
from yt.frontends.stream.api import load_amr_grids
prng = RandomState(0x4d3d3d3)
LE, RE = _geom_transforms[geometry]
LE = np.array(LE)
RE = np.array(RE)
data = []
for gspec in _amr_grid_index:
level, left_edge, right_edge, dims = gspec
left_edge = left_edge * (RE - LE) + LE
right_edge = right_edge * (RE - LE) + LE
gdata = dict(level=level,
left_edge=left_edge,
right_edge=right_edge,
dimensions=dims)
for f in fields:
gdata[f] = prng.random_sample(dims)
if particles:
for i, f in enumerate('particle_position_%s' % ax for ax in 'xyz'):
pdata = prng.random_sample(particles)
pdata /= (right_edge[i] - left_edge[i])
pdata += left_edge[i]
gdata['io', f] = (pdata, 'code_length')
for f in ('particle_velocity_%s' % ax for ax in 'xyz'):
gdata['io', f] = (prng.random_sample(particles) - 0.5, 'cm/s')
gdata['io', 'particle_mass'] = (prng.random_sample(particles), 'g')
data.append(gdata)
bbox = np.array([LE, RE]).T
return load_amr_grids(data, [32, 32, 32], geometry=geometry, bbox=bbox)
def setup():
"""Prepare setup specific environment"""
global test_ds
grid_data = [
dict(left_edge=[0.0, 0.0, 0.0], right_edge=[1.0, 1.0, 1.],
level=0, dimensions=[16, 16, 16]),
dict(left_edge=[0.25, 0.25, 0.25], right_edge=[0.75, 0.75, 0.75],
level=1, dimensions=[16, 16, 16]),
dict(left_edge=[0.25, 0.25, 0.375], right_edge=[0.5, 0.5, 0.625],
level=2, dimensions=[16, 16, 16]),
dict(left_edge=[0.5, 0.5, 0.375], right_edge=[0.75, 0.75, 0.625],
level=2, dimensions=[16, 16, 16]),
dict(left_edge=[0.3125, 0.3125, 0.4375],
right_edge=[0.4375, 0.4375, 0.5625],
level=3, dimensions=[16, 16, 16]),
dict(left_edge=[0.5625, 0.5625, 0.4375],
right_edge=[0.6875, 0.6875, 0.5625],
level=3, dimensions=[16, 16, 16])
]
for grid in grid_data:
grid["density"] = \
np.random.random(grid["dimensions"]) * 2 ** grid["level"]
test_ds = load_amr_grids(grid_data, [16, 16, 16], 1.0)
def setup_test_ds():
"""Prepare setup specific environment"""
grid_data = [
dict(left_edge=[0.0, 0.0, 0.0],
right_edge=[1.0, 1.0, 1.],
level=0,
dimensions=[16, 16, 16]),
dict(left_edge=[0.25, 0.25, 0.25],
right_edge=[0.75, 0.75, 0.75],
level=1,
dimensions=[16, 16, 16]),
dict(left_edge=[0.25, 0.25, 0.375],
right_edge=[0.5, 0.5, 0.625],
level=2,
dimensions=[16, 16, 16]),
dict(left_edge=[0.5, 0.5, 0.375],
right_edge=[0.75, 0.75, 0.625],
level=2,
dimensions=[16, 16, 16]),
dict(left_edge=[0.3125, 0.3125, 0.4375],
right_edge=[0.4375, 0.4375, 0.5625],
level=3,
dimensions=[16, 16, 16]),
dict(left_edge=[0.5625, 0.5625, 0.4375],
right_edge=[0.6875, 0.6875, 0.5625],
level=3,
dimensions=[16, 16, 16])
]
for grid in grid_data:
grid["density"] = \
(np.random.random(grid["dimensions"]) * 2 ** grid["level"], "g/cm**3")
return load_amr_grids(grid_data, [16, 16, 16])
def fake_amr_ds(
fields=("Density", ), geometry="cartesian", particles=0,
length_unit=None):
from yt.frontends.stream.api import load_amr_grids
prng = RandomState(0x4D3D3D3)
LE, RE = _geom_transforms[geometry]
LE = np.array(LE)
RE = np.array(RE)
data = []
for gspec in _amr_grid_index:
level, left_edge, right_edge, dims = gspec
left_edge = left_edge * (RE - LE) + LE
right_edge = right_edge * (RE - LE) + LE
gdata = dict(level=level,
left_edge=left_edge,
right_edge=right_edge,
dimensions=dims)
for f in fields:
gdata[f] = prng.random_sample(dims)
if particles:
for i, f in enumerate(f"particle_position_{ax}" for ax in "xyz"):
pdata = prng.random_sample(particles)
pdata /= right_edge[i] - left_edge[i]
pdata += left_edge[i]
gdata["io", f] = (pdata, "code_length")
for f in (f"particle_velocity_{ax}" for ax in "xyz"):
gdata["io", f] = (prng.random_sample(particles) - 0.5, "cm/s")
gdata["io", "particle_mass"] = (prng.random_sample(particles), "g")
data.append(gdata)
bbox = np.array([LE, RE]).T
return load_amr_grids(data, [32, 32, 32],
geometry=geometry,
bbox=bbox,
length_unit=length_unit)
def fake_amr_ds(fields = ("Density",)):
from yt.frontends.stream.api import load_amr_grids
data = []
for gspec in _amr_grid_index:
level, left_edge, right_edge, dims = gspec
gdata = dict(level = level,
left_edge = left_edge,
right_edge = right_edge,
dimensions = dims)
for f in fields:
gdata[f] = np.random.random(dims)
data.append(gdata)
return load_amr_grids(data, [32, 32, 32], 1.0)
def fake_amr_ds(fields=("Density", ), geometry="cartesian"):
from yt.frontends.stream.api import load_amr_grids
LE, RE = _geom_transforms[geometry]
LE = np.array(LE)
RE = np.array(RE)
data = []
for gspec in _amr_grid_index:
level, left_edge, right_edge, dims = gspec
left_edge = left_edge * (RE - LE) + LE
right_edge = right_edge * (RE - LE) + LE
gdata = dict(level=level,
left_edge=left_edge,
right_edge=right_edge,
dimensions=dims)
for f in fields:
gdata[f] = np.random.random(dims)
data.append(gdata)
bbox = np.array([LE, RE]).T
return load_amr_grids(data, [32, 32, 32], geometry=geometry, bbox=bbox)
def fake_amr_ds(fields = ("Density",), geometry = "cartesian"):
from yt.frontends.stream.api import load_amr_grids
LE, RE = _geom_transforms[geometry]
LE = np.array(LE)
RE = np.array(RE)
data = []
for gspec in _amr_grid_index:
level, left_edge, right_edge, dims = gspec
left_edge = left_edge * (RE - LE) + LE
right_edge = right_edge * (RE - LE) + LE
gdata = dict(level = level,
left_edge = left_edge,
right_edge = right_edge,
dimensions = dims)
for f in fields:
gdata[f] = np.random.random(dims)
data.append(gdata)
bbox = np.array([LE, RE]).T
return load_amr_grids(data, [32, 32, 32], 1.0, geometry=geometry, bbox=bbox)
def test_stream_particles():
num_particles = 100000
domain_dims = (64, 64, 64)
dens = np.random.random(domain_dims)
x = np.random.uniform(size=num_particles)
y = np.random.uniform(size=num_particles)
z = np.random.uniform(size=num_particles)
m = np.ones(num_particles)
# Field operators and cell flagging methods
fo = []
fo.append(ic.TopHatSphere(0.1, [0.2, 0.3, 0.4], {"density": 2.0}))
fo.append(ic.TopHatSphere(0.05, [0.7, 0.4, 0.75], {"density": 20.0}))
rc = [fm.flagging_method_registry["overdensity"](1.0)]
# Check that all of this runs ok without particles
ug0 = load_uniform_grid({"density": dens}, domain_dims, 1.0, nprocs=8)
amr0 = refine_amr(ug0, rc, fo, 3)
grid_data = []
for grid in amr0.index.grids:
data = dict(
left_edge=grid.LeftEdge,
right_edge=grid.RightEdge,
level=grid.Level,
dimensions=grid.ActiveDimensions,
)
for field in amr0.field_list:
data[field] = grid[field]
grid_data.append(data)
amr0 = load_amr_grids(grid_data, domain_dims)
# Now add particles
fields1 = {
"density": dens,
"particle_position_x": x,
"particle_position_y": y,
"particle_position_z": z,
"particle_mass": m,
}
fields2 = fields1.copy()
ug1 = load_uniform_grid(fields1, domain_dims, 1.0)
ug2 = load_uniform_grid(fields2, domain_dims, 1.0, nprocs=8)
# Check to make sure the number of particles is the same
number_of_particles1 = np.sum([grid.NumberOfParticles for grid in ug1.index.grids])
number_of_particles2 = np.sum([grid.NumberOfParticles for grid in ug2.index.grids])
assert_equal(number_of_particles1, num_particles)
assert_equal(number_of_particles1, number_of_particles2)
for grid in ug2.index.grids:
tot_parts = grid["io", "particle_position_x"].size
tot_all_parts = grid["all", "particle_position_x"].size
assert tot_parts == grid.NumberOfParticles
assert tot_all_parts == grid.NumberOfParticles
# Check to make sure the fields have been defined correctly
for ptype in ("all", "io"):
assert (
ug1._get_field_info(ptype, "particle_position_x").sampling_type
== "particle"
)
assert (
ug1._get_field_info(ptype, "particle_position_y").sampling_type
== "particle"
)
assert (
ug1._get_field_info(ptype, "particle_position_z").sampling_type
== "particle"
)
assert ug1._get_field_info(ptype, "particle_mass").sampling_type == "particle"
assert not ug1._get_field_info("gas", "density").sampling_type == "particle"
for ptype in ("all", "io"):
assert (
ug2._get_field_info(ptype, "particle_position_x").sampling_type
== "particle"
)
assert (
ug2._get_field_info(ptype, "particle_position_y").sampling_type
== "particle"
)
assert (
ug2._get_field_info(ptype, "particle_position_z").sampling_type
== "particle"
)
assert ug2._get_field_info(ptype, "particle_mass").sampling_type == "particle"
assert not ug2._get_field_info("gas", "density").sampling_type == "particle"
# Now refine this
amr1 = refine_amr(ug1, rc, fo, 3)
for field in sorted(ug1.field_list):
assert field in amr1.field_list
grid_data = []
for grid in amr1.index.grids:
data = dict(
left_edge=grid.LeftEdge,
right_edge=grid.RightEdge,
level=grid.Level,
dimensions=grid.ActiveDimensions,
)
for field in amr1.field_list:
if field[0] not in ("all", "nbody"):
data[field] = grid[field]
grid_data.append(data)
amr2 = load_amr_grids(grid_data, domain_dims)
# Check everything again
number_of_particles1 = [grid.NumberOfParticles for grid in amr1.index.grids]
number_of_particles2 = [grid.NumberOfParticles for grid in amr2.index.grids]
assert_equal(np.sum(number_of_particles1), num_particles)
assert_equal(number_of_particles1, number_of_particles2)
for grid in amr1.index.grids:
tot_parts = grid["io", "particle_position_x"].size
tot_all_parts = grid["all", "particle_position_x"].size
assert tot_parts == grid.NumberOfParticles
assert tot_all_parts == grid.NumberOfParticles
for grid in amr2.index.grids:
tot_parts = grid["io", "particle_position_x"].size
tot_all_parts = grid["all", "particle_position_x"].size
assert tot_parts == grid.NumberOfParticles
assert tot_all_parts == grid.NumberOfParticles
assert (
amr1._get_field_info("all", "particle_position_x").sampling_type == "particle"
)
assert (
amr1._get_field_info("all", "particle_position_y").sampling_type == "particle"
)
assert (
amr1._get_field_info("all", "particle_position_z").sampling_type == "particle"
)
assert amr1._get_field_info("all", "particle_mass").sampling_type == "particle"
assert not amr1._get_field_info("gas", "density").sampling_type == "particle"
assert (
amr2._get_field_info("all", "particle_position_x").sampling_type == "particle"
)
assert (
amr2._get_field_info("all", "particle_position_y").sampling_type == "particle"
)
assert (
amr2._get_field_info("all", "particle_position_z").sampling_type == "particle"
)
assert amr2._get_field_info("all", "particle_mass").sampling_type == "particle"
assert not amr2._get_field_info("gas", "density").sampling_type == "particle"
# Now perform similar checks, but with multiple particle types
num_dm_particles = 30000
xd = np.random.uniform(size=num_dm_particles)
yd = np.random.uniform(size=num_dm_particles)
zd = np.random.uniform(size=num_dm_particles)
md = np.ones(num_dm_particles)
num_star_particles = 20000
xs = np.random.uniform(size=num_star_particles)
ys = np.random.uniform(size=num_star_particles)
zs = np.random.uniform(size=num_star_particles)
ms = 2.0 * np.ones(num_star_particles)
dens = np.random.random(domain_dims)
fields3 = {
"density": dens,
("dm", "particle_position_x"): xd,
("dm", "particle_position_y"): yd,
("dm", "particle_position_z"): zd,
("dm", "particle_mass"): md,
("star", "particle_position_x"): xs,
("star", "particle_position_y"): ys,
("star", "particle_position_z"): zs,
("star", "particle_mass"): ms,
}
fields4 = fields3.copy()
ug3 = load_uniform_grid(fields3, domain_dims, 1.0)
ug4 = load_uniform_grid(fields4, domain_dims, 1.0, nprocs=8)
# Check to make sure the number of particles is the same
number_of_particles3 = np.sum([grid.NumberOfParticles for grid in ug3.index.grids])
number_of_particles4 = np.sum([grid.NumberOfParticles for grid in ug4.index.grids])
assert_equal(number_of_particles3, num_dm_particles + num_star_particles)
assert_equal(number_of_particles3, number_of_particles4)
for grid in ug4.index.grids:
tot_parts = grid["dm", "particle_position_x"].size
tot_parts += grid["star", "particle_position_x"].size
tot_all_parts = grid["all", "particle_position_x"].size
assert tot_parts == grid.NumberOfParticles
assert tot_all_parts == grid.NumberOfParticles
# Check to make sure the fields have been defined correctly
for ptype in ("dm", "star"):
assert (
ug3._get_field_info(ptype, "particle_position_x").sampling_type
== "particle"
)
assert (
ug3._get_field_info(ptype, "particle_position_y").sampling_type
== "particle"
)
assert (
ug3._get_field_info(ptype, "particle_position_z").sampling_type
== "particle"
)
assert ug3._get_field_info(ptype, "particle_mass").sampling_type == "particle"
assert (
ug4._get_field_info(ptype, "particle_position_x").sampling_type
== "particle"
)
assert (
ug4._get_field_info(ptype, "particle_position_y").sampling_type
== "particle"
)
assert (
ug4._get_field_info(ptype, "particle_position_z").sampling_type
== "particle"
)
assert ug4._get_field_info(ptype, "particle_mass").sampling_type == "particle"
# Now refine this
amr3 = refine_amr(ug3, rc, fo, 3)
for field in sorted(ug3.field_list):
assert field in amr3.field_list
grid_data = []
for grid in amr3.index.grids:
data = dict(
left_edge=grid.LeftEdge,
right_edge=grid.RightEdge,
level=grid.Level,
dimensions=grid.ActiveDimensions,
)
for field in amr3.field_list:
if field[0] not in ("all", "nbody"):
data[field] = grid[field]
grid_data.append(data)
amr4 = load_amr_grids(grid_data, domain_dims)
# Check everything again
number_of_particles3 = [grid.NumberOfParticles for grid in amr3.index.grids]
number_of_particles4 = [grid.NumberOfParticles for grid in amr4.index.grids]
assert_equal(np.sum(number_of_particles3), num_star_particles + num_dm_particles)
assert_equal(number_of_particles3, number_of_particles4)
for ptype in ("dm", "star"):
assert (
amr3._get_field_info(ptype, "particle_position_x").sampling_type
== "particle"
)
assert (
amr3._get_field_info(ptype, "particle_position_y").sampling_type
== "particle"
)
assert (
amr3._get_field_info(ptype, "particle_position_z").sampling_type
== "particle"
)
assert amr3._get_field_info(ptype, "particle_mass").sampling_type == "particle"
assert (
amr4._get_field_info(ptype, "particle_position_x").sampling_type
== "particle"
)
assert (
amr4._get_field_info(ptype, "particle_position_y").sampling_type
== "particle"
)
assert (
amr4._get_field_info(ptype, "particle_position_z").sampling_type
== "particle"
)
assert amr4._get_field_info(ptype, "particle_mass").sampling_type == "particle"
for grid in amr3.index.grids:
tot_parts = grid["dm", "particle_position_x"].size
tot_parts += grid["star", "particle_position_x"].size
tot_all_parts = grid["all", "particle_position_x"].size
assert tot_parts == grid.NumberOfParticles
assert tot_all_parts == grid.NumberOfParticles
for grid in amr4.index.grids:
tot_parts = grid["dm", "particle_position_x"].size
tot_parts += grid["star", "particle_position_x"].size
tot_all_parts = grid["all", "particle_position_x"].size
assert tot_parts == grid.NumberOfParticles
assert tot_all_parts == grid.NumberOfParticles
def test_stream_particles() :
num_particles = 100000
domain_dims = (64, 64, 64)
dens = np.random.random(domain_dims)
x = np.random.uniform(size=num_particles)
y = np.random.uniform(size=num_particles)
z = np.random.uniform(size=num_particles)
m = np.ones((num_particles))
# Field operators and cell flagging methods
fo = []
fo.append(ic.TopHatSphere(0.1, [0.2,0.3,0.4],{"density": 2.0}))
fo.append(ic.TopHatSphere(0.05, [0.7,0.4,0.75],{"density": 20.0}))
rc = [fm.flagging_method_registry["overdensity"](1.0)]
# Check that all of this runs ok without particles
ug0 = load_uniform_grid({"density": dens}, domain_dims, 1.0, nprocs=8)
amr0 = refine_amr(ug0, rc, fo, 3)
grid_data = []
for grid in amr0.index.grids :
data = dict(left_edge = grid.LeftEdge,
right_edge = grid.RightEdge,
level = grid.Level,
dimensions = grid.ActiveDimensions,
number_of_particles = grid.NumberOfParticles)
for field in amr0.field_list :
data[field] = grid[field]
grid_data.append(data)
amr0 = load_amr_grids(grid_data, domain_dims, 1.0)
# Now add particles
fields1 = {"density": dens,
"particle_position_x": x,
"particle_position_y": y,
"particle_position_z": z,
"particle_mass": m,
"number_of_particles": num_particles}
fields2 = fields1.copy()
ug1 = load_uniform_grid(fields1, domain_dims, 1.0)
ug2 = load_uniform_grid(fields2, domain_dims, 1.0, nprocs=8)
# Check to make sure the number of particles is the same
number_of_particles1 = np.sum([grid.NumberOfParticles for grid in ug1.index.grids])
number_of_particles2 = np.sum([grid.NumberOfParticles for grid in ug2.index.grids])
yield assert_equal, number_of_particles1, num_particles
yield assert_equal, number_of_particles1, number_of_particles2
# Check to make sure the fields have been defined correctly
for ptype in ("all", "io"):
assert ug1._get_field_info(ptype, "particle_position_x").particle_type
assert ug1._get_field_info(ptype, "particle_position_y").particle_type
assert ug1._get_field_info(ptype, "particle_position_z").particle_type
assert ug1._get_field_info(ptype, "particle_mass").particle_type
assert not ug1._get_field_info("gas", "density").particle_type
for ptype in ("all", "io"):
assert ug2._get_field_info(ptype, "particle_position_x").particle_type
assert ug2._get_field_info(ptype, "particle_position_y").particle_type
assert ug2._get_field_info(ptype, "particle_position_z").particle_type
assert ug2._get_field_info(ptype, "particle_mass").particle_type
assert not ug2._get_field_info("gas", "density").particle_type
# Now refine this
amr1 = refine_amr(ug1, rc, fo, 3)
for field in sorted(ug1.field_list):
yield assert_equal, (field in amr1.field_list), True
grid_data = []
for grid in amr1.index.grids :
data = dict(left_edge = grid.LeftEdge,
right_edge = grid.RightEdge,
level = grid.Level,
dimensions = grid.ActiveDimensions,
number_of_particles = grid.NumberOfParticles)
for field in amr1.field_list :
data[field] = grid[field]
grid_data.append(data)
amr2 = load_amr_grids(grid_data, domain_dims, 1.0)
# Check everything again
number_of_particles1 = [grid.NumberOfParticles for grid in amr1.index.grids]
number_of_particles2 = [grid.NumberOfParticles for grid in amr2.index.grids]
yield assert_equal, np.sum(number_of_particles1), num_particles
yield assert_equal, number_of_particles1, number_of_particles2
assert amr1._get_field_info("all", "particle_position_x").particle_type
assert amr1._get_field_info("all", "particle_position_y").particle_type
assert amr1._get_field_info("all", "particle_position_z").particle_type
assert amr1._get_field_info("all", "particle_mass").particle_type
assert not amr1._get_field_info("gas", "density").particle_type
assert amr2._get_field_info("all", "particle_position_x").particle_type
assert amr2._get_field_info("all", "particle_position_y").particle_type
assert amr2._get_field_info("all", "particle_position_z").particle_type
assert amr2._get_field_info("all", "particle_mass").particle_type
assert not amr2._get_field_info("gas", "density").particle_type
def test_stream_particles():
num_particles = 100000
domain_dims = (64, 64, 64)
dens = np.random.random(domain_dims)
x = np.random.uniform(size=num_particles)
y = np.random.uniform(size=num_particles)
z = np.random.uniform(size=num_particles)
m = np.ones((num_particles))
# Field operators and cell flagging methods
fo = []
fo.append(ic.TopHatSphere(0.1, [0.2, 0.3, 0.4], {"density": 2.0}))
fo.append(ic.TopHatSphere(0.05, [0.7, 0.4, 0.75], {"density": 20.0}))
rc = [fm.flagging_method_registry["overdensity"](1.0)]
# Check that all of this runs ok without particles
ug0 = load_uniform_grid({"density": dens}, domain_dims, 1.0, nprocs=8)
amr0 = refine_amr(ug0, rc, fo, 3)
grid_data = []
for grid in amr0.index.grids:
data = dict(left_edge=grid.LeftEdge,
right_edge=grid.RightEdge,
level=grid.Level,
dimensions=grid.ActiveDimensions,
number_of_particles=grid.NumberOfParticles)
for field in amr0.field_list:
data[field] = grid[field]
grid_data.append(data)
amr0 = load_amr_grids(grid_data, domain_dims, 1.0)
# Now add particles
fields1 = {
"density": dens,
"particle_position_x": x,
"particle_position_y": y,
"particle_position_z": z,
"particle_mass": m,
"number_of_particles": num_particles
}
fields2 = fields1.copy()
ug1 = load_uniform_grid(fields1, domain_dims, 1.0)
ug2 = load_uniform_grid(fields2, domain_dims, 1.0, nprocs=8)
# Check to make sure the number of particles is the same
number_of_particles1 = np.sum(
[grid.NumberOfParticles for grid in ug1.index.grids])
number_of_particles2 = np.sum(
[grid.NumberOfParticles for grid in ug2.index.grids])
yield assert_equal, number_of_particles1, num_particles
yield assert_equal, number_of_particles1, number_of_particles2
# Check to make sure the fields have been defined correctly
for ptype in ("all", "io"):
assert ug1._get_field_info(ptype, "particle_position_x").particle_type
assert ug1._get_field_info(ptype, "particle_position_y").particle_type
assert ug1._get_field_info(ptype, "particle_position_z").particle_type
assert ug1._get_field_info(ptype, "particle_mass").particle_type
assert not ug1._get_field_info("gas", "density").particle_type
for ptype in ("all", "io"):
assert ug2._get_field_info(ptype, "particle_position_x").particle_type
assert ug2._get_field_info(ptype, "particle_position_y").particle_type
assert ug2._get_field_info(ptype, "particle_position_z").particle_type
assert ug2._get_field_info(ptype, "particle_mass").particle_type
assert not ug2._get_field_info("gas", "density").particle_type
# Now refine this
amr1 = refine_amr(ug1, rc, fo, 3)
for field in sorted(ug1.field_list):
yield assert_equal, (field in amr1.field_list), True
grid_data = []
for grid in amr1.index.grids:
data = dict(left_edge=grid.LeftEdge,
right_edge=grid.RightEdge,
level=grid.Level,
dimensions=grid.ActiveDimensions,
number_of_particles=grid.NumberOfParticles)
for field in amr1.field_list:
data[field] = grid[field]
grid_data.append(data)
amr2 = load_amr_grids(grid_data, domain_dims, 1.0)
# Check everything again
number_of_particles1 = [
grid.NumberOfParticles for grid in amr1.index.grids
]
number_of_particles2 = [
grid.NumberOfParticles for grid in amr2.index.grids
]
yield assert_equal, np.sum(number_of_particles1), num_particles
yield assert_equal, number_of_particles1, number_of_particles2
assert amr1._get_field_info("all", "particle_position_x").particle_type
assert amr1._get_field_info("all", "particle_position_y").particle_type
assert amr1._get_field_info("all", "particle_position_z").particle_type
assert amr1._get_field_info("all", "particle_mass").particle_type
assert not amr1._get_field_info("gas", "density").particle_type
assert amr2._get_field_info("all", "particle_position_x").particle_type
assert amr2._get_field_info("all", "particle_position_y").particle_type
assert amr2._get_field_info("all", "particle_position_z").particle_type
assert amr2._get_field_info("all", "particle_mass").particle_type
assert not amr2._get_field_info("gas", "density").particle_type