def test_cgs_equivalent():
"""
Check cgs equivalent of a unit.
"""
Msun_cgs = mass_sun_grams
Mpc_cgs = cm_per_mpc
u1 = Unit("Msun * Mpc**-3")
u2 = Unit("g * cm**-3")
u3 = u1.get_cgs_equivalent()
yield assert_true, u2.expr == u3.expr
yield assert_true, u2 == u3
yield assert_allclose, u1.cgs_value, Msun_cgs / Mpc_cgs**3, 1e-12
yield assert_true, u2.cgs_value == 1
yield assert_true, u3.cgs_value == 1
mass_density = mass / length**3
yield assert_true, u1.dimensions == mass_density
yield assert_true, u2.dimensions == mass_density
yield assert_true, u3.dimensions == mass_density
yield assert_allclose, get_conversion_factor(u1, u3)[0], \
Msun_cgs / Mpc_cgs**3, 1e-12
def test_base_equivalent():
"""
Check base equivalent of a unit.
"""
Msun_cgs = mass_sun_grams
Mpc_cgs = cm_per_mpc
u1 = Unit("Msun * Mpc**-3")
u2 = Unit("g * cm**-3")
u3 = u1.get_base_equivalent()
assert_true(u2.expr == u3.expr)
assert_true(u2 == u3)
assert_allclose_units(u1.base_value, Msun_cgs / Mpc_cgs**3, 1e-12)
assert_true(u2.base_value == 1)
assert_true(u3.base_value == 1)
mass_density = mass / length**3
assert_true(u1.dimensions == mass_density)
assert_true(u2.dimensions == mass_density)
assert_true(u3.dimensions == mass_density)
assert_allclose_units(
get_conversion_factor(u1, u3)[0], Msun_cgs / Mpc_cgs**3, 1e-12)
def test_base_equivalent():
"""
Check base equivalent of a unit.
"""
Msun_cgs = mass_sun_grams
Mpc_cgs = cm_per_mpc
u1 = Unit("Msun * Mpc**-3")
u2 = Unit("g * cm**-3")
u3 = u1.get_base_equivalent()
yield assert_true, u2.expr == u3.expr
yield assert_true, u2 == u3
yield assert_allclose_units, u1.base_value, Msun_cgs / Mpc_cgs**3, 1e-12
yield assert_true, u2.base_value == 1
yield assert_true, u3.base_value == 1
mass_density = mass / length**3
yield assert_true, u1.dimensions == mass_density
yield assert_true, u2.dimensions == mass_density
yield assert_true, u3.dimensions == mass_density
yield assert_allclose_units, get_conversion_factor(u1, u3)[0], \
Msun_cgs / Mpc_cgs**3, 1e-12