/usr/lib/python2.7/dist-packages/tables/tests/common.py is in python-tables 3.1.1-3.
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########################################################################
#
# License: BSD
# Created: 2005-05-24
# Author: Ivan Vilata i Balaguer - ivan@selidor.net
#
# $Id$
#
########################################################################
"""Utilities for PyTables' test suites."""
from __future__ import print_function
import os
import sys
import time
import unittest
import tempfile
import warnings
import os.path
import numpy
import tables
verbose = False
"""Show detailed output of the testing process."""
heavy = False
"""Run all tests even when they take long to complete."""
show_memory = False
"""Show the progress of memory consumption."""
if 'verbose' in sys.argv:
verbose = True
sys.argv.remove('verbose')
if 'silent' in sys.argv: # take care of old flag, just in case
verbose = False
sys.argv.remove('silent')
if '--heavy' in sys.argv:
heavy = True
sys.argv.remove('--heavy')
def verbosePrint(string, nonl=False):
"""Print out the `string` if verbose output is enabled."""
if not verbose:
return
if nonl:
print(string, end=' ')
else:
print(string)
def cleanup(klass):
# klass.__dict__.clear() # This is too hard. Don't do that
# print("Class attributes deleted")
for key in klass.__dict__:
if not klass.__dict__[key].__class__.__name__ in ('instancemethod'):
klass.__dict__[key] = None
def allequal(a, b, flavor="numpy"):
"""Checks if two numerical objects are equal."""
# print("a-->", repr(a))
# print("b-->", repr(b))
if not hasattr(b, "shape"):
# Scalar case
return a == b
if ((not hasattr(a, "shape") or a.shape == ()) and
(not hasattr(b, "shape") or b.shape == ())):
return a == b
if a.shape != b.shape:
if verbose:
print("Shape is not equal:", a.shape, "!=", b.shape)
return 0
# Way to check the type equality without byteorder considerations
if hasattr(b, "dtype") and a.dtype.str[1:] != b.dtype.str[1:]:
if verbose:
print("dtype is not equal:", a.dtype, "!=", b.dtype)
return 0
# Rank-0 case
if len(a.shape) == 0:
if a[()] == b[()]:
return 1
else:
if verbose:
print("Shape is not equal:", a.shape, "!=", b.shape)
return 0
# null arrays
if a.size == 0: # len(a) is not correct for generic shapes
if b.size == 0:
return 1
else:
if verbose:
print("length is not equal")
print("len(a.data) ==>", len(a.data))
print("len(b.data) ==>", len(b.data))
return 0
# Multidimensional case
result = (a == b)
result = numpy.all(result)
if not result and verbose:
print("Some of the elements in arrays are not equal")
return result
def areArraysEqual(arr1, arr2):
"""Are both `arr1` and `arr2` equal arrays?
Arguments can be regular NumPy arrays, chararray arrays or
structured arrays (including structured record arrays). They are
checked for type and value equality.
"""
t1 = type(arr1)
t2 = type(arr2)
if not ((hasattr(arr1, 'dtype') and arr1.dtype == arr2.dtype) or
issubclass(t1, t2) or issubclass(t2, t1)):
return False
return numpy.all(arr1 == arr2)
def pyTablesTest(oldmethod):
def newmethod(self, *args, **kwargs):
self._verboseHeader()
try:
try:
return oldmethod(self, *args, **kwargs)
except SkipTest as se:
if se.args:
msg = se.args[0]
else:
msg = "<skipped>"
verbosePrint("\nSkipped test: %s" % msg)
except self.failureException as fe:
if fe.args:
msg = fe.args[0]
else:
msg = "<failed>"
verbosePrint("\nTest failed: %s" % msg)
raise
except Exception as exc:
cname = exc.__class__.__name__
verbosePrint("\nError in test::\n\n %s: %s" % (cname, exc))
raise
finally:
verbosePrint('') # separator line between tests
newmethod.__name__ = oldmethod.__name__
newmethod.__doc__ = oldmethod.__doc__
return newmethod
class SkipTest(Exception):
"""When this exception is raised, the test is skipped successfully."""
pass
class MetaPyTablesTestCase(type):
"""Metaclass for PyTables test case classes."""
# http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/198078
def __new__(class_, name, bases, dict_):
newdict = {}
for (aname, avalue) in dict_.iteritems():
if callable(avalue) and aname.startswith('test'):
avalue = pyTablesTest(avalue)
newdict[aname] = avalue
return type.__new__(class_, name, bases, newdict)
class PyTablesTestCase(unittest.TestCase):
"""Abstract test case with useful methods."""
__metaclass__ = MetaPyTablesTestCase
def _getName(self):
"""Get the name of this test case."""
return self.id().split('.')[-2]
def _getMethodName(self):
"""Get the name of the method currently running in the test case."""
return self.id().split('.')[-1]
def _verboseHeader(self):
"""Print a nice header for the current test method if verbose."""
if verbose:
name = self._getName()
methodName = self._getMethodName()
title = "Running %s.%s" % (name, methodName)
print('%s\n%s' % (title, '-' * len(title)))
@classmethod
def _testFilename(class_, filename):
"""Returns an absolute version of the `filename`, taking care of the
location of the calling test case class."""
modname = class_.__module__
# When the definitive switch to ``setuptools`` is made,
# this should definitely use the ``pkg_resouces`` API::
#
# return pkg_resources.resource_filename(modname, filename)
#
modfile = sys.modules[modname].__file__
dirname = os.path.dirname(modfile)
return os.path.join(dirname, filename)
def failUnlessWarns(self, warnClass, callableObj, *args, **kwargs):
"""Fail unless a warning of class `warnClass` is issued.
This method will fail if no warning belonging to the given
`warnClass` is issued when invoking `callableObj` with arguments
`args` and keyword arguments `kwargs`. Warnings of the
`warnClass` are hidden, while others are shown.
This method returns the value returned by the call to
`callableObj`.
"""
issued = [False] # let's avoid scoping problems ;)
# Save the original warning-showing function.
showwarning = warnings.showwarning
# This warning-showing function hides and takes note
# of expected warnings and acts normally on others.
def myShowWarning(message, category, filename, lineno,
file=None, line=None):
if issubclass(category, warnClass):
issued[0] = True
verbosePrint(
"Great! The following ``%s`` was caught::\n"
"\n"
" %s\n"
"\n"
"In file ``%s``, line number %d.\n"
% (category.__name__, message, filename, lineno))
else:
showwarning(message, category, filename, lineno, file, line)
# By forcing Python to always show warnings of the wanted class,
# and replacing the warning-showing function with a tailored one,
# we can check for *every* occurence of the warning.
warnings.filterwarnings('always', category=warnClass)
warnings.showwarning = myShowWarning
try:
# Run code and see what happens.
ret = callableObj(*args, **kwargs)
finally:
# Restore the original warning-showing function
# and warning filter.
warnings.showwarning = showwarning
warnings.filterwarnings('default', category=warnClass)
if not issued[0]:
raise self.failureException(
"``%s`` was not issued" % warnClass.__name__)
# We only get here if the call to `callableObj` was successful
# and it issued the expected warning.
return ret
assertWarns = failUnlessWarns
def failUnlessRaises(self, excClass, callableObj, *args, **kwargs):
if not verbose:
# Use the ordinary implementation from `unittest.TestCase`.
return super(PyTablesTestCase, self).assertRaises(
excClass, callableObj, *args, **kwargs)
try:
callableObj(*args, **kwargs)
except excClass as exc:
print((
"Great! The following ``%s`` was caught::\n"
"\n"
" %s\n"
% (exc.__class__.__name__, exc)))
else:
raise self.failureException(
"``%s`` was not raised" % excClass.__name__)
assertRaises = failUnlessRaises
def _checkEqualityGroup(self, node1, node2, hardlink=False):
if verbose:
print("Group 1:", node1)
print("Group 2:", node2)
if hardlink:
self.assertTrue(node1._v_pathname != node2._v_pathname,
"node1 and node2 have the same pathnames.")
else:
self.assertTrue(node1._v_pathname == node2._v_pathname,
"node1 and node2 does not have the same pathnames.")
self.assertTrue(node1._v_children == node2._v_children,
"node1 and node2 does not have the same children.")
def _checkEqualityLeaf(self, node1, node2, hardlink=False):
if verbose:
print("Leaf 1:", node1)
print("Leaf 2:", node2)
if hardlink:
self.assertTrue(node1._v_pathname != node2._v_pathname,
"node1 and node2 have the same pathnames.")
else:
self.assertTrue(node1._v_pathname == node2._v_pathname,
"node1 and node2 does not have the same pathnames.")
self.assertTrue(areArraysEqual(node1[:], node2[:]),
"node1 and node2 does not have the same values.")
class TempFileMixin:
def setUp(self):
"""Set ``h5file`` and ``h5fname`` instance attributes.
* ``h5fname``: the name of the temporary HDF5 file.
* ``h5file``: the writable, empty, temporary HDF5 file.
"""
self.h5fname = tempfile.mktemp(suffix='.h5')
self.h5file = tables.open_file(
self.h5fname, 'w', title=self._getName())
def tearDown(self):
"""Close ``h5file`` and remove ``h5fname``."""
self.h5file.close()
self.h5file = None
os.remove(self.h5fname) # comment this for debugging purposes only
def _reopen(self, mode='r'):
"""Reopen ``h5file`` in the specified ``mode``.
Returns a true or false value depending on whether the file was
reopenend or not. If not, nothing is changed.
"""
self.h5file.close()
self.h5file = tables.open_file(self.h5fname, mode)
return True
class ShowMemTime(PyTablesTestCase):
tref = time.time()
"""Test for showing memory and time consumption."""
def test00(self):
"""Showing memory and time consumption."""
# Obtain memory info (only for Linux 2.6.x)
for line in open("/proc/self/status"):
if line.startswith("VmSize:"):
vmsize = int(line.split()[1])
elif line.startswith("VmRSS:"):
vmrss = int(line.split()[1])
elif line.startswith("VmData:"):
vmdata = int(line.split()[1])
elif line.startswith("VmStk:"):
vmstk = int(line.split()[1])
elif line.startswith("VmExe:"):
vmexe = int(line.split()[1])
elif line.startswith("VmLib:"):
vmlib = int(line.split()[1])
print("\nWallClock time:", time.time() - self.tref)
print("Memory usage: ******* %s *******" % self._getName())
print("VmSize: %7s kB\tVmRSS: %7s kB" % (vmsize, vmrss))
print("VmData: %7s kB\tVmStk: %7s kB" % (vmdata, vmstk))
print("VmExe: %7s kB\tVmLib: %7s kB" % (vmexe, vmlib))
## Local Variables:
## mode: python
## py-indent-offset: 4
## tab-width: 4
## fill-column: 72
## End:
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