def test_pow_create_new_instance_dimensions():
q0 = DQ(1, dimensions=D({'a': -1}))
q1_exp = DQ(1, D({'a': -2}))
q1_real = q0**2
assert (q1_exp.dimensions == q1_real.dimensions)
assert (id(q0.dimensions) != id(q1_real.dimensions))
def test_sub_basics():
q0 = D({'a': 1, 'b': 0, 'c': 0})
q1 = D({'a': 0, 'b': 1, 'd': 0})
q2_exp = D({'a': 1, 'b': -1, 'c': 0, 'd': 0})
q2_real = q0 - q1
assert (q2_exp == q2_real)
def test_mul_numeric():
# __mul__ does make sense if the other is a number
q0 = D({'a': 1, 'b': 0, 'c': 0})
q1 = -1 * q0
q0_ = D({'a': -1, 'b': 0, 'c': 0})
assert (q1 == q0_)
q2 = 2 * q0
assert (q2['a'] == 2)
def test_add_basics():
q0 = D({'a': 1, 'b': 0, 'c': 0})
q1 = D({'a': 0, 'b': 1, 'd': 0})
q2_exp = D({'a': 1, 'b': 1, 'c': 0, 'd': 0})
q2_real = q0 + q1
assert (q2_exp == q2_real)
def test_ne():
q0 = DQ(1, D({'a':1, 'b':0, 'c':0}))
q1 = DQ(2, D({'a':1, 'b':0, 'c':0}))
assert(q0 != q1)
with pytest.raises(TypeError):
a = (q1!=2)
q2 = DQ(3, D({'a':1}))
with pytest.raises(NotImplementedError):
a = (q0!=q2)
def test_mul_create_new_instance_dimensions():
q0 = DQ(2, dimensions=D({'a': -1}))
q1 = DQ(3, dimensions=D({'a': -1}))
q2_exp = DQ(6, D({'a': -2}))
q2_real = q0 * q1
assert (q2_exp.dimensions == q2_real.dimensions)
assert(id(q0.dimensions)!=id(q2_real.dimensions) \
and id(q1.dimensions)!=id(q2_real.dimensions))
def test_div_create_new_instance_dimensions():
q0 = DQ(1, dimensions=D({'a': -1}))
q1 = DQ(2, dimensions=D({'a': -1}))
q2_exp = DQ(0.5, D({'a': 0}))
q2_real = q0 / q1
assert (q2_exp.dimensions == q2_real.dimensions)
assert(id(q0.dimensions)!=id(q2_real.dimensions) \
and id(q1.dimensions)!=id(q2_real.dimensions))
def test_add_create_new_instance_dimensions():
q0 = DQ(dimensions=D({'a': -1}))
q1 = DQ(dimensions=D({'a': -1}))
q2 = q0 + q1
assert(q0.dimensions == q2.dimensions \
and q1.dimensions == q2.dimensions)
assert(id(q0.dimensions)!=id(q2.dimensions) \
and id(q1.dimensions)!=id(q2.dimensions))
def test_numeric_value_settings():
with pytest.raises(TypeError):
test = DQ(numeric='1', dimensions=D())
with pytest.raises(TypeError):
test = DQ(numeric=(1, 1), dimensions=D())
with pytest.raises(TypeError):
test = DQ(numeric=True, dimensions=D())
valid = DQ(numeric=1)
valid = DQ(numeric=1.0)
valid = DQ(numeric=1 + 2j)
def test_add_nomal_dict():
q0 = D({'a': 1, 'b': 0, 'c': 0})
q_wrong = {
'd': 1
} # this is a regular dict, not an instance of Dimensional
q_exp = D({'a': 1, 'b': 0, 'c': 0, 'd': 1})
assert (q_exp == q0 + q_wrong
) # this is True because Dimensional can handle the wrong type
assert (q_exp == q_wrong + q0) # same for __radd__
def test_rpow_basics():
q = DQ(2, D({'a': 1, 'b': -1}))
# each dimension declared in q.dimensions has to be 0 in order for pow to make sense
with pytest.raises(NotImplementedError):
q_ = 2**q
q1 = DQ(1, D({'a': 1, 'b': -1}))
q2 = q / q1
dim_null = D({'a': 0, 'b': 0})
assert (q2.dimensions == dim_null)
base = 2
value = base**q2
assert (value == 4)
def test_decorator_wrapping():
q0 = D({'a': 1, 'b': 0, 'c': 0})
assert (q0.__add__.__name__ == '__add__')
assert (q0.__sub__.__name__ == '__sub__')
assert (q0.__mul__.__name__ == '__mul__')
assert (q0.__radd__.__name__ == '__radd__')
assert (q0.__rsub__.__name__ == '__rsub__')
assert (q0.__rmul__.__name__ == '__rmul__')
def multiplying_Q_many_times():
dq_1m = DQ(1, D({'L': 1}))
pint_1m = 1 * ureg.meter
nu_1m = 1 * nu.m
normal_int = 1
for i in range(1000):
dq_1m *= dq_1m
pint_1m *= pint_1m
nu_1m *= nu_1m
normal_int *= normal_int
def test_ge():
q0 = DQ(2)
q1 = DQ(1)
assert(q0>=q1)
assert(q0>=1)
q2 = DQ(1, {'a':1})
with pytest.raises(TypeError):
a = (q2>=0)
with pytest.raises(NotImplementedError):
a = (q0>=q2)
q0.dimensions = D({'a':1})
assert(q0>=q2)
def test_le():
q0 = DQ(2)
q1 = DQ(1)
assert(q1<=q0)
assert(q1<=2)
q2 = DQ(1, {'a':1})
with pytest.raises(TypeError):
a = (q2<=2)
with pytest.raises(NotImplementedError):
a = (q2<=q0)
q0.dimensions = D({'a':1})
assert(q2<=q0)
def test_dimensions_settings():
valid = DQ(dimensions={'a': 1})
valid = DQ(dimensions=OrderedDict({'a': 1}))
valid = DQ(dimensions=D({'a': 1}))
with pytest.raises(TypeError):
test = DQ(dimensions=1)
with pytest.raises(TypeError):
test = DQ(dimensions='1')
with pytest.raises(TypeError):
test = DQ(dimensions=(1, 2))
with pytest.raises(TypeError):
test = DQ(dimensions=[1, 2])
def test_SI_dimensions(translator):
# http://www.bipm.org/en/publications/si-brochure/section1-3.html
assert (translator.translate('m').dimensions == D({'L': 1}))
assert (translator.translate('s').dimensions == D({'t': 1})
) # 't' instead of suggested (by SI) 'T' because
assert (translator.translate('K').dimensions == D({'T': 1})
) # the suggested \theta doesn't quite work, hence 'T' here.
assert (
translator.translate('A').dimensions == D({'i': 1})
) # lower case 'i' instead of upper 'I' to avoid confusion between (1, l, I) (one, lower L, upper i)
assert (translator.translate('mol').dimensions == D({'N': 1}))
assert (translator.translate('cd').dimensions == D({'J': 1}))
assert (translator.translate('kg').dimensions == D({'M': 1}))
def test_mul():
# __mul__ doesn't make sense hence it isn't implemented
q0 = D({'a': 1, 'b': 0, 'c': 0})
q1 = D({'a': 0, 'b': 1, 'd': 0})
with pytest.raises(TypeError):
q2 = q0 * q1
# http://www.bipm.org/en/publications/si-brochure/section1-3.html
assert (translator.translate('m').dimensions == D({'L': 1}))
assert (translator.translate('s').dimensions == D({'t': 1})
) # 't' instead of suggested (by SI) 'T' because
assert (translator.translate('K').dimensions == D({'T': 1})
) # the suggested \theta doesn't quite work, hence 'T' here.
assert (
translator.translate('A').dimensions == D({'i': 1})
) # lower case 'i' instead of upper 'I' to avoid confusion between (1, l, I) (one, lower L, upper i)
assert (translator.translate('mol').dimensions == D({'N': 1}))
assert (translator.translate('cd').dimensions == D({'J': 1}))
assert (translator.translate('kg').dimensions == D({'M': 1}))
@pytest.mark.parametrize('dim_string,expected_dimension', (
('m', D({'L': 1})),
('m2', D({'L': 2})),
('m-2', D({'L': -2})),
))
def test_SI_dimension_m_multiples(translator, dim_string, expected_dimension):
q0 = translator.translate(dim_string).dimensions
assert (q0 == expected_dimension)
@pytest.mark.parametrize('string, expected_dimension', (
('(kg.s)-2/((m3/K)-3/A2)',
D({
'M': -2.0,
't': -2.0,
'L': 9.0,
'T': -3.0,
def test_dimensions_settings_new_id():
q0 = DQ()
d0 = D({'a': 1})
q0.dimensions = d0
assert (id(q0.dimensions) != id(d0))
def test_eq():
q0 = DQ(1, D({'a':1, 'b':0, 'c':0}))
q1 = DQ(1, D({'a':1, 'b':0, 'c':0}))
assert(q0 == q1)
if method(dimquant)==possibility:
passed = True
break
return passed
def test_dimquant_with_str_init():
q0 = DQ('1 m')
q1 = DQ('1 s')
q2 = DQ('1 m/s')
assert( q2==(q0/q1) )
q2_ = DQ('1 m.s-1')
assert( q2==q2_ )
@pytest.mark.parametrize('expected_strs,dq',(
( ('1 m.s-1','1 s-1.m'),
DQ(1, D({'L': 1, 't': -1}))),
( ('2 m.s-1','2 s-1.m'),
DQ(2, D({'L': 1, 't': -1}))),
( ('1 m2.s-1','1 s-1.m2'),
DQ(1, D({'L': 2, 't': -1}))),
))
def test_dimquant_str_out(expected_strs,dq):
assert( accept_multiple_possibilities(expected_strs, dq, str) )
@pytest.mark.parametrize('expected_reprs,dq',(
( ('BaseDimQuant(1, Dimensional({\'L\': 1, \'t\': -1}))',
'BaseDimQuant(1, Dimensional({\'t\': -1, \'L\': 1}))'),
BDQ(1, D({'L': 1, 't': -1}))),
( ('BaseDimQuant(2, Dimensional({\'L\': 1, \'t\': -1}))',
'BaseDimQuant(2, Dimensional({\'t\': -1, \'L\': 1}))'),
BDQ(2, D({'L': 1, 't': -1}))),
def test_add_nondict():
q0 = D({'a': 1, 'b': 0, 'c': 0})
with pytest.raises(TypeError):
q2 = q0 + 1
with pytest.raises(TypeError):
q2 = 1 + q0
def test_sub_create_new_instances():
q0 = D({'a': 1, 'b': 0, 'c': 0})
q1 = D({'a': 0, 'b': 1, 'd': 0})
q2 = q0 - q1
assert (id(q0) != id(q2) and id(q1) != id(q2))
def test_sub_nondict():
q0 = D({'a': 1, 'b': 0, 'c': 0})
with pytest.raises(TypeError):
q2 = q0 - 1
with pytest.raises(TypeError):
q2 = 1 - q0
def test_DQ_default_init():
default = DQ()
assert (default.numeric == 0)
assert (default.dimensions == D())
def test_add_create_new_instance_dimensions():
q0 = DQ(dimensions=D({'a': -1}))
q1 = DQ(dimensions=D({'a': -1}))
q2 = q0 + q1
assert(q0.dimensions == q2.dimensions \
and q1.dimensions == q2.dimensions)
assert(id(q0.dimensions)!=id(q2.dimensions) \
and id(q1.dimensions)!=id(q2.dimensions))
@pytest.mark.parametrize('summand0, summand1, expectation', (
(DQ(1, D({
'a': 1,
'b': 0,
'c': 0
})), DQ(2, D({
'a': 1,
'b': 0,
'c': 0
})), DQ(3, D({
'a': 1,
'b': 0,
'c': 0
}))),
(DQ(4, D({
'a': 1,
'b': 1,
'c': 0
})), DQ(5, D({