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# -*- coding: utf-8 -*-
from __future__ import division, unicode_literals, print_function, absolute_import
import os
import logging
from pint.compat import ndarray, unittest, np
from pint import logger, UnitRegistry
from pint.quantity import _Quantity
from logging.handlers import BufferingHandler
h = logging.StreamHandler()
f = logging.Formatter("%(levelname)s %(asctime)s %(funcName)s %(lineno)d %(message)s")
h.setLevel(logging.DEBUG)
h.setFormatter(f)
logger.addHandler(h)
logger.setLevel(logging.DEBUG)
class TestHandler(BufferingHandler):
def __init__(self):
# BufferingHandler takes a "capacity" argument
# so as to know when to flush. As we're overriding
# shouldFlush anyway, we can set a capacity of zero.
# You can call flush() manually to clear out the
# buffer.
BufferingHandler.__init__(self, 0)
def shouldFlush(self):
return False
def emit(self, record):
self.buffer.append(record.__dict__)
class TestCase(unittest.TestCase):
FORCE_NDARRAY = False
@classmethod
def setUpClass(cls):
cls.ureg = UnitRegistry(force_ndarray=cls.FORCE_NDARRAY)
cls.Q_ = cls.ureg.Quantity
def _get_comparable_magnitudes(self, first, second, msg):
if isinstance(first, _Quantity) and isinstance(second, _Quantity):
second = second.to(first)
self.assertEqual(first.units, second.units, msg=msg + 'Units are not equal.')
m1, m2 = first.magnitude, second.magnitude
elif isinstance(first, _Quantity):
self.assertTrue(first.dimensionless, msg=msg + 'The first is not dimensionless.')
first = first.to('')
m1, m2 = first.magnitude, second
elif isinstance(second, _Quantity):
self.assertTrue(second.dimensionless, msg=msg + 'The second is not dimensionless.')
second = second.to('')
m1, m2 = first, second.magnitude
else:
m1, m2 = first, second
return m1, m2
def assertSequenceEqual(self, seq1, seq2, msg=None, seq_type=None):
if isinstance(seq1, _Quantity):
if isinstance(seq2, _Quantity):
seq2 = seq2.to(seq1).magnitude
seq1 = seq1.magnitude
else:
seq1 = seq1.to('').magnitude
if isinstance(seq2, _Quantity):
if isinstance(seq1, _Quantity):
seq1 = seq1.to(seq2).magnitude
seq2 = seq2.magnitude
else:
seq2 = seq2.to('').magnitude
if isinstance(seq1, ndarray):
seq1 = seq1.tolist()
if isinstance(seq2, ndarray):
seq2 = seq2.tolist()
unittest.TestCase.assertSequenceEqual(self, seq1, seq2, msg, seq_type)
def assertQuantityEqual(self, first, second, msg=None):
if msg is None:
msg = 'Comparing %r and %r. ' % (first, second)
m1, m2 = self._get_comparable_magnitudes(first, second, msg)
if isinstance(m1, ndarray) or isinstance(m2, ndarray):
np.testing.assert_array_equal(m1, m2, err_msg=msg)
else:
unittest.TestCase.assertEqual(self, m1, m2, msg, )
def assertQuantityAlmostEqual(self, first, second, places=None, msg=None, delta=None):
if msg is None:
msg = 'Comparing %r and %r. ' % (first, second)
m1, m2 = self._get_comparable_magnitudes(first, second, msg)
if isinstance(m1, ndarray) or isinstance(m2, ndarray):
if delta is not None:
rtol, atol = 0, delta
else:
places = places or 7
rtol, atol = 10 ** (-places), 0
np.testing.assert_allclose(m1, m2, rtol=rtol, atol=atol, err_msg=msg)
else:
unittest.TestCase.assertAlmostEqual(self, m1, m2, places, msg, delta)
def assertAlmostEqual(self, first, second, places=None, msg=None, delta=None):
if isinstance(first, _Quantity) and isinstance(second, _Quantity):
second = second.to(first)
unittest.TestCase.assertAlmostEqual(self, first.magnitude, second.magnitude, places, msg, delta)
self.assertEqual(first.units, second.units)
elif isinstance(first, _Quantity):
self.assertTrue(first.dimensionless)
first = first.to('')
unittest.TestCase.assertAlmostEqual(self, first.magnitude, second, places, msg, delta)
elif isinstance(second, _Quantity):
self.assertTrue(second.dimensionless)
second = second.to('')
unittest.TestCase.assertAlmostEqual(self, first, second.magnitude, places, msg, delta)
else:
unittest.TestCase.assertAlmostEqual(self, first, second, places, msg, delta)
def assertAlmostEqualRelError(self, first, second, rel, msg=None):
if isinstance(first, _Quantity) and isinstance(second, _Quantity):
second = second.to(first)
val = abs((second - first) / (second + first))
elif isinstance(first, _Quantity):
self.assertTrue(first.dimensionless)
first = first.to('')
val = abs((second - first) / (second + first))
elif isinstance(second, _Quantity):
self.assertTrue(second.dimensionless)
second = second.to('')
val = abs((second - first) / (second + first))
else:
val = abs((second - first) / (second + first))
self.assertLess(val, rel, msg=msg)
def testsuite():
"""A testsuite that has all the pint tests.
"""
return unittest.TestLoader().discover(os.path.dirname(__file__))
def main():
"""Runs the testsuite as command line application."""
try:
unittest.main()
except Exception as e:
print('Error: %s' % e)
def run():
"""Run all tests i
"""
test_runner = unittest.TextTestRunner()
test_runner.run(testsuite())
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