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common.py
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45 lines (37 loc) · 1.37 KB
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import sys
if sys.version.startswith('2.6') or sys.version.startswith('3.1'):
import unittest2 as unittest
else:
import unittest
import numpy as np
from ..quantity import Quantity
from ..units import set_default_units
class TestCase(unittest.TestCase):
def setUp(self):
set_default_units('SI')
def tearDown(self):
set_default_units('SI')
def assertQuantityEqual(self, q1, q2, msg=None, delta=None):
"""
Make sure q1 and q2 are the same quantities to within the given
precision.
"""
delta = 1e-5 if delta is None else delta
msg = '' if msg is None else ' (%s)' % msg
q1 = Quantity(q1)
q2 = Quantity(q2)
if q1.shape != q2.shape:
raise self.failureException(
"Shape mismatch (%s vs %s)%s" % (q1.shape, q2.shape, msg)
)
if not np.all(np.abs(q1.magnitude - q2.magnitude) < delta):
raise self.failureException(
"Magnitudes differ by more than %g (%s vs %s)%s"
% (delta, q1.magnitude, q2.magnitude, msg)
)
d1 = getattr(q1, '_dimensionality', None)
d2 = getattr(q2, '_dimensionality', None)
if (d1 or d2) and not (d1 == d2):
raise self.failureException(
"Dimensionalities are not equal (%s vs %s)%s" % (d1, d2, msg)
)