def test1(self):
print "Testing GalactICs initialization"
instance = GalactICs(**default_options)
instance.initialize_code()
instance.parameters.generate_bulge_flag = False
instance.parameters.generate_disk_flag = False
instance.parameters.order_of_multipole_expansion = 0
instance.commit_parameters()
instance.cleanup_code()
instance.stop()
def test1(self):
print "Testing GalactICs initialization"
instance = GalactICs(**default_options)
instance.initialize_code()
instance.parameters.generate_bulge_flag = False
instance.parameters.generate_disk_flag = False
instance.parameters.order_of_multipole_expansion = 0
instance.commit_parameters()
instance.cleanup_code()
instance.stop()
def test2(self):
print "Testing GalactICs parameters (with unit converter)"
instance = GalactICs(self.default_unit_converter, **default_options)
instance.initialize_code()
for par, value in [('generate_halo_flag', True),
('generate_disk_flag', True),
('generate_bulge_flag', True),
('halo_do_center_flag', True),
('bulge_do_center_flag', True),
('disk_do_center_flag', True)]:
self.assertTrue(value is getattr(instance.parameters, par))
setattr(instance.parameters, par, not value)
self.assertFalse(value is getattr(instance.parameters, par))
for par, value in [('number_of_grid_intervals', 90000),
('order_of_multipole_expansion', 10),
('number_of_radial_steps_correction_fns_disk_df',
10), ('number_of_iterations_disk_df', 50),
('halo_number_of_particles', 200000),
('bulge_number_of_particles', 50000),
('disk_number_of_particles', 100000),
('halo_random_seed', -1), ('bulge_random_seed', -1),
('disk_random_seed', -1)]:
self.assertEquals(value, getattr(instance.parameters, par))
setattr(instance.parameters, par, 1)
self.assertEquals(1, getattr(instance.parameters, par))
for par, value in [
('halo_outer_radius', 300.0 | nbody_system.length),
('halo_scale_velocity', 3.26331115 | nbody_system.speed),
('halo_scale_radius', 6.06699419 | nbody_system.length),
('halo_truncation_width', 100.0 | nbody_system.length)
]:
self.assertEquals(instance.unit_converter.to_si(value),
getattr(instance.parameters, par))
setattr(instance.parameters, par, 3.0 | value.unit)
self.assertEquals(instance.unit_converter.to_si(3.0 | value.unit),
getattr(instance.parameters, par))
self.assertEquals(os.path.join(instance.get_output_directory()),
instance.parameters.output_directory)
instance.parameters.output_directory = 'test'
self.assertEquals("test", instance.parameters.output_directory)
instance.cleanup_code()
instance.stop()
def test3(self):
print "Testing GalactICs parameters (nbody units, no converter)"
instance = GalactICs(**default_options)
instance.initialize_code()
for par, value in [('halo_outer_radius', 300.0 | nbody_system.length),
('halo_scale_velocity', 3.26331115 | nbody_system.speed),
('halo_scale_radius', 6.06699419 | nbody_system.length),
('halo_truncation_width', 100.0 | nbody_system.length)]:
self.assertEquals(value, getattr(instance.parameters, par))
setattr(instance.parameters, par, 3.0 | value.unit)
self.assertEquals(3.0 | value.unit, getattr(instance.parameters, par))
instance.cleanup_code()
instance.stop()
def test2(self):
print "Testing GalactICs parameters (with unit converter)"
instance = GalactICs(self.default_unit_converter, **default_options)
instance.initialize_code()
for par, value in [
("generate_halo_flag", True),
("generate_disk_flag", True),
("generate_bulge_flag", True),
("halo_do_center_flag", True),
("bulge_do_center_flag", True),
("disk_do_center_flag", True),
]:
self.assertTrue(value is getattr(instance.parameters, par))
setattr(instance.parameters, par, not value)
self.assertFalse(value is getattr(instance.parameters, par))
for par, value in [
("number_of_grid_intervals", 90000),
("order_of_multipole_expansion", 10),
("number_of_radial_steps_correction_fns_disk_df", 10),
("number_of_iterations_disk_df", 50),
("halo_number_of_particles", 200000),
("bulge_number_of_particles", 50000),
("disk_number_of_particles", 100000),
("halo_random_seed", -1),
("bulge_random_seed", -1),
("disk_random_seed", -1),
]:
self.assertEquals(value, getattr(instance.parameters, par))
setattr(instance.parameters, par, 1)
self.assertEquals(1, getattr(instance.parameters, par))
for par, value in [
("halo_outer_radius", 300.0 | nbody_system.length),
("halo_scale_velocity", 3.26331115 | nbody_system.speed),
("halo_scale_radius", 6.06699419 | nbody_system.length),
("halo_truncation_width", 100.0 | nbody_system.length),
]:
self.assertEquals(instance.unit_converter.to_si(value), getattr(instance.parameters, par))
setattr(instance.parameters, par, 3.0 | value.unit)
self.assertEquals(instance.unit_converter.to_si(3.0 | value.unit), getattr(instance.parameters, par))
self.assertEquals(os.path.join(instance.get_output_directory()), instance.parameters.output_directory)
instance.parameters.output_directory = "test"
self.assertEquals("test", instance.parameters.output_directory)
instance.cleanup_code()
instance.stop()
def _new_galactics_model(halo_number_of_particles, unit_system_converter=None, do_scale=False, **keyword_arguments):
instance = GalactICs(unit_converter=unit_system_converter)
instance.parameters.halo_number_of_particles = halo_number_of_particles
for (key, value) in keyword_arguments.iteritems():
setattr(instance.parameters, key, value)
instance.generate_particles()
result = instance.particles.copy()
instance.stop()
result.move_to_center()
if do_scale:
result.scale_to_standard(convert_nbody=unit_system_converter)
if not unit_system_converter is None:
result = ParticlesWithUnitsConverted(result, unit_system_converter.as_converter_from_si_to_generic())
result = result.copy()
return result
def test7(self):
print "Testing GalactICs state"
number_of_particles = 1000
print "First do everything manually:"
instance = GalactICs(**default_options)
self.assertEquals(instance.get_name_of_current_state(),
'UNINITIALIZED')
instance.initialize_code()
self.assertEquals(instance.get_name_of_current_state(), 'INITIALIZED')
instance.parameters.halo_number_of_particles = number_of_particles
instance.parameters.generate_bulge_flag = False
instance.parameters.generate_disk_flag = False
instance.parameters.order_of_multipole_expansion = 0
instance.commit_parameters()
self.assertEquals(instance.get_name_of_current_state(), 'EDIT')
instance.overridden().generate_particles()
self.assertEquals(instance.get_name_of_current_state(), 'UPDATE')
instance.invoke_state_change_updated()
self.assertEquals(instance.get_name_of_current_state(), 'RUN')
self.assertEquals(len(instance.particles), number_of_particles)
instance.cleanup_code()
self.assertEquals(instance.get_name_of_current_state(), 'END')
instance.stop()
print "initialize_code(), (re)commit_parameters(), update_particle_set(), " \
"and cleanup_code() should be called automatically:"
instance = GalactICs(**default_options)
self.assertEquals(instance.get_name_of_current_state(),
'UNINITIALIZED')
instance.parameters.halo_number_of_particles = number_of_particles
instance.parameters.generate_bulge_flag = False
instance.parameters.generate_disk_flag = False
instance.parameters.order_of_multipole_expansion = 0
self.assertEquals(instance.get_name_of_current_state(), 'INITIALIZED')
self.assertEquals(instance.get_number_of_particles_updated(), 0)
self.assertEquals(instance.get_name_of_current_state(), 'EDIT')
instance.parameters.halo_random_seed = -42.0
self.assertEquals(instance.get_name_of_current_state(),
'CHANGE_PARAMETERS_EDIT')
self.assertEquals(instance.get_number_of_particles_updated(), 0)
self.assertEquals(instance.get_name_of_current_state(), 'EDIT')
instance.generate_particles()
self.assertEquals(instance.get_name_of_current_state(), 'RUN')
self.assertEquals(len(instance.particles), number_of_particles)
self.assertEquals(instance.get_number_of_particles_updated(), 0)
instance.stop()
self.assertEquals(instance.get_name_of_current_state(), 'STOPPED')
def test6(self):
print "Testing GalactICs generate_particles: generate multiple sets"
number_of_particles = 1000
instance = GalactICs(**default_options)
instance.initialize_code()
instance.parameters.halo_number_of_particles = number_of_particles
instance.parameters.generate_bulge_flag = False
instance.parameters.generate_disk_flag = False
instance.parameters.order_of_multipole_expansion = 0
instance.parameters.halo_random_seed = -1.0
instance.commit_parameters()
instance.generate_particles()
set1 = instance.particles.copy()
self.assertEquals(len(set1), number_of_particles)
instance.generate_particles()
set2 = instance.particles.copy()
self.assertEquals(len(set2), number_of_particles)
# GalactICs' random-number generator is re-seeded with 'halo_random_seed'
# each time, and the result should be the same:
for attribute in ["mass", "x", "y", "z", "vx", "vy", "vz"]:
self.assertEquals(getattr(set1, attribute),
getattr(set2, attribute))
instance.parameters.halo_random_seed = -42.0
instance.generate_particles()
# halo_random_seed changed: draw a different random set of particles
set3 = instance.particles.copy()
self.assertEquals(len(set3), number_of_particles)
self.assertEquals(set1.mass, set3.mass)
self.assertRaises(self.failureException, self.assertEquals, set1.x,
set3.x)
self.assertAlmostRelativeEquals(
abs(set1.x).median(),
abs(set3.x).median(), 1)
self.assertAlmostRelativeEquals(
abs(set1.vy).median(),
abs(set3.vy).median(), 1)
instance.cleanup_code()
instance.stop()
def test5(self):
print "Testing GalactICs generate_particles"
instance = GalactICs(**default_options)
instance.initialize_code()
instance.parameters.halo_number_of_particles = 1000
instance.parameters.generate_bulge_flag = False
instance.parameters.generate_disk_flag = False
instance.parameters.order_of_multipole_expansion = 0
instance.commit_parameters()
instance.generate_particles()
self.assertEquals(len(instance.particles), 1000)
accuracy = 3
mass_halo = 1178.89297009 | nbody_system.mass
expected_kinetic_energy = 2418.49730735 | nbody_system.energy
self.assertAlmostRelativeEquals(instance.particles.total_mass(),
mass_halo, accuracy)
self.assertAlmostRelativeEquals(instance.particles.kinetic_energy(),
expected_kinetic_energy, accuracy)
self.assertEqual(len(instance.halo_particles), 1000)
self.assertEqual(len(instance.disk_particles), 0)
self.assertEqual(len(instance.bulge_particles), 0)
instance.cleanup_code()
instance.stop()
def slowtest4(self):
print "Testing GalactICs generate_particles"
n_particles_halo = 100
n_particles_bulge = 100
n_particles_disk = 100
number_of_particles = n_particles_disk + n_particles_bulge + n_particles_halo
instance = GalactICs(**default_options)
instance.initialize_code()
instance.parameters.disk_number_of_particles = n_particles_disk
instance.parameters.bulge_number_of_particles = n_particles_bulge
instance.parameters.halo_number_of_particles = n_particles_halo
instance.commit_parameters()
instance.generate_particles()
self.assertEquals(len(instance.particles), number_of_particles)
self.assertAlmostRelativeEquals(instance.particles.total_mass(),
1225.4466176 | nbody_system.mass, 3)
self.assertAlmostRelativeEquals(instance.particles.kinetic_energy(),
2564.69894361 | nbody_system.energy, 3)
self.assertAlmostRelativeEquals(
instance.particles.potential_energy(G=nbody_system.G),
-4531.58416742 | nbody_system.energy, 3)
self.assertAlmostRelativeEquals(instance.particles.virial_radius(),
165.694750127 | nbody_system.length, 3)
instance.cleanup_code()
instance.stop()
def _create_docstring():
_tmp_instance = GalactICs()
docstring = "\nGalactICs documentation:\n" + GalactICsInterface.__doc__ + \
"\n" + _tmp_instance.parameters.__doc__ + "\n"
_tmp_instance.stop()
return docstring
def test7(self):
print "Testing GalactICs state"
number_of_particles = 1000
print "First do everything manually:"
instance = GalactICs(**default_options)
self.assertEquals(instance.get_name_of_current_state(), "UNINITIALIZED")
instance.initialize_code()
self.assertEquals(instance.get_name_of_current_state(), "INITIALIZED")
instance.parameters.halo_number_of_particles = number_of_particles
instance.parameters.generate_bulge_flag = False
instance.parameters.generate_disk_flag = False
instance.parameters.order_of_multipole_expansion = 0
instance.commit_parameters()
self.assertEquals(instance.get_name_of_current_state(), "EDIT")
instance.overridden().generate_particles()
self.assertEquals(instance.get_name_of_current_state(), "UPDATE")
instance.invoke_state_change_updated()
self.assertEquals(instance.get_name_of_current_state(), "RUN")
self.assertEquals(len(instance.particles), number_of_particles)
instance.cleanup_code()
self.assertEquals(instance.get_name_of_current_state(), "END")
instance.stop()
print "initialize_code(), (re)commit_parameters(), update_particle_set(), " "and cleanup_code() should be called automatically:"
instance = GalactICs(**default_options)
self.assertEquals(instance.get_name_of_current_state(), "UNINITIALIZED")
instance.parameters.halo_number_of_particles = number_of_particles
instance.parameters.generate_bulge_flag = False
instance.parameters.generate_disk_flag = False
instance.parameters.order_of_multipole_expansion = 0
self.assertEquals(instance.get_name_of_current_state(), "INITIALIZED")
self.assertEquals(instance.get_number_of_particles_updated(), 0)
self.assertEquals(instance.get_name_of_current_state(), "EDIT")
instance.parameters.halo_random_seed = -42.0
self.assertEquals(instance.get_name_of_current_state(), "CHANGE_PARAMETERS_EDIT")
self.assertEquals(instance.get_number_of_particles_updated(), 0)
self.assertEquals(instance.get_name_of_current_state(), "EDIT")
instance.generate_particles()
self.assertEquals(instance.get_name_of_current_state(), "RUN")
self.assertEquals(len(instance.particles), number_of_particles)
self.assertEquals(instance.get_number_of_particles_updated(), 0)
instance.stop()
self.assertEquals(instance.get_name_of_current_state(), "STOPPED")
def test6(self):
print "Testing GalactICs generate_particles: generate multiple sets"
number_of_particles = 1000
instance = GalactICs(**default_options)
instance.initialize_code()
instance.parameters.halo_number_of_particles = number_of_particles
instance.parameters.generate_bulge_flag = False
instance.parameters.generate_disk_flag = False
instance.parameters.order_of_multipole_expansion = 0
instance.parameters.halo_random_seed = -1.0
instance.commit_parameters()
instance.generate_particles()
set1 = instance.particles.copy()
self.assertEquals(len(set1), number_of_particles)
instance.generate_particles()
set2 = instance.particles.copy()
self.assertEquals(len(set2), number_of_particles)
# GalactICs' random-number generator is re-seeded with 'halo_random_seed'
# each time, and the result should be the same:
for attribute in ["mass", "x", "y", "z", "vx", "vy", "vz"]:
self.assertEquals(getattr(set1, attribute), getattr(set2, attribute))
instance.parameters.halo_random_seed = -42.0
instance.generate_particles()
# halo_random_seed changed: draw a different random set of particles
set3 = instance.particles.copy()
self.assertEquals(len(set3), number_of_particles)
self.assertEquals(set1.mass, set3.mass)
self.assertRaises(self.failureException, self.assertEquals, set1.x, set3.x)
self.assertAlmostRelativeEquals(abs(set1.x).median(), abs(set3.x).median(), 1)
self.assertAlmostRelativeEquals(abs(set1.vy).median(), abs(set3.vy).median(), 1)
instance.cleanup_code()
instance.stop()
def test5(self):
print "Testing GalactICs generate_particles"
instance = GalactICs(**default_options)
instance.initialize_code()
instance.parameters.halo_number_of_particles = 1000
instance.parameters.generate_bulge_flag = False
instance.parameters.generate_disk_flag = False
instance.parameters.order_of_multipole_expansion = 0
instance.commit_parameters()
instance.generate_particles()
self.assertEquals(len(instance.particles), 1000)
accuracy = 3
mass_halo = 1178.89297009 | nbody_system.mass
expected_kinetic_energy = 2418.49730735 | nbody_system.energy
self.assertAlmostRelativeEquals(instance.particles.total_mass(), mass_halo, accuracy)
self.assertAlmostRelativeEquals(instance.particles.kinetic_energy(), expected_kinetic_energy, accuracy)
self.assertEqual(len(instance.halo_particles), 1000)
self.assertEqual(len(instance.disk_particles), 0)
self.assertEqual(len(instance.bulge_particles), 0)
instance.cleanup_code()
instance.stop()
def slowtest4(self):
print "Testing GalactICs generate_particles"
n_particles_halo = 100
n_particles_bulge = 100
n_particles_disk = 100
number_of_particles = n_particles_disk + n_particles_bulge + n_particles_halo
instance = GalactICs(**default_options)
instance.initialize_code()
instance.parameters.disk_number_of_particles = n_particles_disk
instance.parameters.bulge_number_of_particles = n_particles_bulge
instance.parameters.halo_number_of_particles = n_particles_halo
instance.commit_parameters()
instance.generate_particles()
self.assertEquals(len(instance.particles), number_of_particles)
self.assertAlmostRelativeEquals(instance.particles.total_mass(), 1225.4466176 | nbody_system.mass, 3)
self.assertAlmostRelativeEquals(instance.particles.kinetic_energy(), 2564.69894361 | nbody_system.energy, 3)
self.assertAlmostRelativeEquals(
instance.particles.potential_energy(G=nbody_system.G), -4531.58416742 | nbody_system.energy, 3
)
self.assertAlmostRelativeEquals(instance.particles.virial_radius(), 165.694750127 | nbody_system.length, 3)
instance.cleanup_code()
instance.stop()
def _create_docstring():
_tmp_instance = GalactICs()
docstring = "\nGalactICs documentation:\n" + GalactICsInterface.__doc__ + \
"\n" + _tmp_instance.parameters.__doc__ + "\n"
_tmp_instance.stop()
return docstring
