def assertAlmostEqual64(self, actual, desired, atol=2e-15, rtol=2e-3):
'''Assert numerical equivalence with packed data.
Test closeness of ``actual`` to ``desired`` data, where the latter are
specified as a base64 packed data string (see :func:`nutils.numeric.pack`
and :func:`nutils.numeric.unpack` for details on packing). The primary use
case is embedded regression testing.
The ``atol`` and ``rtol`` arguments are used for both unpacking and
equivalence testing and cannot be changed independently of the base64 string.
Doing so will raise an exception with a suggested update.
Args
----
actual : :class:`float` array
The obtained data.
desired : :class:`str`
The desired data in the form of a base64 string.
atol : :class:`float`
Absolute tolerance
rtol : :class:`float`
Relative tolerance
'''
try:
desired = numeric.unpack(
numpy.frombuffer(zlib.decompress(binascii.a2b_base64(desired)),
dtype=numpy.int16), atol,
rtol).reshape(actual.shape)
except Exception as e:
status = ['failed to decode data: {}'.format(e)]
else:
error = abs(actual - desired)
spacing = numpy.sqrt(atol**2 + (desired * rtol)**2)
fail = numpy.logical_xor(numpy.isnan(actual), numpy.isnan(desired))
numpy.greater(error, spacing, where=~numpy.isnan(error), out=fail)
nfail = fail.sum()
if not nfail:
return
status = [
'{}/{} values do not match up to atol={:.2e}, rtol={:.2e}:'.
format(nfail, fail.size, atol, rtol)
]
status.extend(
'{} desired: {:+.4e}, actual: {:+.4e}, spacing: {:.1e}'.format(
list(index), desired[index], actual[index], spacing[index])
for index in zip(*fail.nonzero()))
if nfail > 10:
status[6:-5] = '...',
status.append('If this is expected, update the base64 string to:')
with warnings.via(status.append):
s = binascii.b2a_base64(
zlib.compress(
numeric.pack(actual, atol, rtol, numpy.int16).tobytes(),
9)).decode().rstrip()
status.extend(s[i:i + 80] for i in range(0, len(s), 80))
self.fail('\n'.join(status))
def assertAlmostEqual64(self, actual, desired, atol=2e-15, rtol=2e-3):
'''Assert numerical equivalence with packed data.
Test closeness of ``actual`` to ``desired`` data, where the latter are
specified as a base64 packed data string (see :func:`nutils.numeric.pack`
and :func:`nutils.numeric.unpack` for details on packing). The primary use
case is embedded regression testing.
The ``atol`` and ``rtol`` arguments are used for both unpacking and
equivalence testing and cannot be changed independently of the base64 string.
Doing so will raise an exception with a suggested update.
Args
----
actual : :class:`float` array
The obtained data.
desired : :class:`str`
The desired data in the form of a base64 string.
atol : :class:`float`
Absolute tolerance
rtol : :class:`float`
Relative tolerance
'''
try:
desired = numeric.unpack(numpy.frombuffer(zlib.decompress(binascii.a2b_base64(desired)), dtype=numpy.int16), atol, rtol).reshape(actual.shape)
except Exception as e:
status = ['failed to decode data: {}'.format(e)]
else:
error = abs(actual - desired)
spacing = numpy.sqrt(atol**2 + (desired*rtol)**2)
fail = numpy.logical_xor(numpy.isnan(actual), numpy.isnan(desired))
numpy.greater(error, spacing, where=~numpy.isnan(error), out=fail)
nfail = fail.sum()
if not nfail:
return
status = ['{}/{} values do not match up to atol={:.2e}, rtol={:.2e}:'.format(nfail, fail.size, atol, rtol)]
status.extend('{} desired: {:+.4e}, actual: {:+.4e}, spacing: {:.1e}'.format(list(index), desired[index], actual[index], spacing[index]) for index in zip(*fail.nonzero()))
if nfail > 10:
status[6:-5] = '...',
status.append('If this is expected, update the base64 string to:')
with warnings.via(status.append):
s = binascii.b2a_base64(zlib.compress(numeric.pack(actual, atol, rtol, numpy.int16).tobytes(), 9)).decode().rstrip()
status.extend(s[i:i+80] for i in range(0, len(s), 80))
self.fail('\n'.join(status))