mirror of
https://github.com/PiBrewing/craftbeerpi4.git
synced 2024-12-26 07:24:56 +01:00
364 lines
14 KiB
Python
364 lines
14 KiB
Python
# These classes implement a doctest runner plugin for nose, a "known failure"
|
|
# error class, and a customized TestProgram for NumPy.
|
|
|
|
# Because this module imports nose directly, it should not
|
|
# be used except by nosetester.py to avoid a general NumPy
|
|
# dependency on nose.
|
|
import os
|
|
import sys
|
|
import doctest
|
|
import inspect
|
|
|
|
import numpy
|
|
import nose
|
|
from nose.plugins import doctests as npd
|
|
from nose.plugins.errorclass import ErrorClass, ErrorClassPlugin
|
|
from nose.plugins.base import Plugin
|
|
from nose.util import src
|
|
from .nosetester import get_package_name
|
|
from .utils import KnownFailureException, KnownFailureTest
|
|
|
|
|
|
# Some of the classes in this module begin with 'Numpy' to clearly distinguish
|
|
# them from the plethora of very similar names from nose/unittest/doctest
|
|
|
|
#-----------------------------------------------------------------------------
|
|
# Modified version of the one in the stdlib, that fixes a python bug (doctests
|
|
# not found in extension modules, https://bugs.python.org/issue3158)
|
|
class NumpyDocTestFinder(doctest.DocTestFinder):
|
|
|
|
def _from_module(self, module, object):
|
|
"""
|
|
Return true if the given object is defined in the given
|
|
module.
|
|
"""
|
|
if module is None:
|
|
return True
|
|
elif inspect.isfunction(object):
|
|
return module.__dict__ is object.__globals__
|
|
elif inspect.isbuiltin(object):
|
|
return module.__name__ == object.__module__
|
|
elif inspect.isclass(object):
|
|
return module.__name__ == object.__module__
|
|
elif inspect.ismethod(object):
|
|
# This one may be a bug in cython that fails to correctly set the
|
|
# __module__ attribute of methods, but since the same error is easy
|
|
# to make by extension code writers, having this safety in place
|
|
# isn't such a bad idea
|
|
return module.__name__ == object.__self__.__class__.__module__
|
|
elif inspect.getmodule(object) is not None:
|
|
return module is inspect.getmodule(object)
|
|
elif hasattr(object, '__module__'):
|
|
return module.__name__ == object.__module__
|
|
elif isinstance(object, property):
|
|
return True # [XX] no way not be sure.
|
|
else:
|
|
raise ValueError("object must be a class or function")
|
|
|
|
def _find(self, tests, obj, name, module, source_lines, globs, seen):
|
|
"""
|
|
Find tests for the given object and any contained objects, and
|
|
add them to `tests`.
|
|
"""
|
|
|
|
doctest.DocTestFinder._find(self, tests, obj, name, module,
|
|
source_lines, globs, seen)
|
|
|
|
# Below we re-run pieces of the above method with manual modifications,
|
|
# because the original code is buggy and fails to correctly identify
|
|
# doctests in extension modules.
|
|
|
|
# Local shorthands
|
|
from inspect import (
|
|
isroutine, isclass, ismodule, isfunction, ismethod
|
|
)
|
|
|
|
# Look for tests in a module's contained objects.
|
|
if ismodule(obj) and self._recurse:
|
|
for valname, val in obj.__dict__.items():
|
|
valname1 = f'{name}.{valname}'
|
|
if ( (isroutine(val) or isclass(val))
|
|
and self._from_module(module, val)):
|
|
|
|
self._find(tests, val, valname1, module, source_lines,
|
|
globs, seen)
|
|
|
|
# Look for tests in a class's contained objects.
|
|
if isclass(obj) and self._recurse:
|
|
for valname, val in obj.__dict__.items():
|
|
# Special handling for staticmethod/classmethod.
|
|
if isinstance(val, staticmethod):
|
|
val = getattr(obj, valname)
|
|
if isinstance(val, classmethod):
|
|
val = getattr(obj, valname).__func__
|
|
|
|
# Recurse to methods, properties, and nested classes.
|
|
if ((isfunction(val) or isclass(val) or
|
|
ismethod(val) or isinstance(val, property)) and
|
|
self._from_module(module, val)):
|
|
valname = f'{name}.{valname}'
|
|
self._find(tests, val, valname, module, source_lines,
|
|
globs, seen)
|
|
|
|
|
|
# second-chance checker; if the default comparison doesn't
|
|
# pass, then see if the expected output string contains flags that
|
|
# tell us to ignore the output
|
|
class NumpyOutputChecker(doctest.OutputChecker):
|
|
def check_output(self, want, got, optionflags):
|
|
ret = doctest.OutputChecker.check_output(self, want, got,
|
|
optionflags)
|
|
if not ret:
|
|
if "#random" in want:
|
|
return True
|
|
|
|
# it would be useful to normalize endianness so that
|
|
# bigendian machines don't fail all the tests (and there are
|
|
# actually some bigendian examples in the doctests). Let's try
|
|
# making them all little endian
|
|
got = got.replace("'>", "'<")
|
|
want = want.replace("'>", "'<")
|
|
|
|
# try to normalize out 32 and 64 bit default int sizes
|
|
for sz in [4, 8]:
|
|
got = got.replace("'<i%d'" % sz, "int")
|
|
want = want.replace("'<i%d'" % sz, "int")
|
|
|
|
ret = doctest.OutputChecker.check_output(self, want,
|
|
got, optionflags)
|
|
|
|
return ret
|
|
|
|
|
|
# Subclass nose.plugins.doctests.DocTestCase to work around a bug in
|
|
# its constructor that blocks non-default arguments from being passed
|
|
# down into doctest.DocTestCase
|
|
class NumpyDocTestCase(npd.DocTestCase):
|
|
def __init__(self, test, optionflags=0, setUp=None, tearDown=None,
|
|
checker=None, obj=None, result_var='_'):
|
|
self._result_var = result_var
|
|
self._nose_obj = obj
|
|
doctest.DocTestCase.__init__(self, test,
|
|
optionflags=optionflags,
|
|
setUp=setUp, tearDown=tearDown,
|
|
checker=checker)
|
|
|
|
|
|
print_state = numpy.get_printoptions()
|
|
|
|
class NumpyDoctest(npd.Doctest):
|
|
name = 'numpydoctest' # call nosetests with --with-numpydoctest
|
|
score = 1000 # load late, after doctest builtin
|
|
|
|
# always use whitespace and ellipsis options for doctests
|
|
doctest_optflags = doctest.NORMALIZE_WHITESPACE | doctest.ELLIPSIS
|
|
|
|
# files that should be ignored for doctests
|
|
doctest_ignore = ['generate_numpy_api.py',
|
|
'setup.py']
|
|
|
|
# Custom classes; class variables to allow subclassing
|
|
doctest_case_class = NumpyDocTestCase
|
|
out_check_class = NumpyOutputChecker
|
|
test_finder_class = NumpyDocTestFinder
|
|
|
|
# Don't use the standard doctest option handler; hard-code the option values
|
|
def options(self, parser, env=os.environ):
|
|
Plugin.options(self, parser, env)
|
|
# Test doctests in 'test' files / directories. Standard plugin default
|
|
# is False
|
|
self.doctest_tests = True
|
|
# Variable name; if defined, doctest results stored in this variable in
|
|
# the top-level namespace. None is the standard default
|
|
self.doctest_result_var = None
|
|
|
|
def configure(self, options, config):
|
|
# parent method sets enabled flag from command line --with-numpydoctest
|
|
Plugin.configure(self, options, config)
|
|
self.finder = self.test_finder_class()
|
|
self.parser = doctest.DocTestParser()
|
|
if self.enabled:
|
|
# Pull standard doctest out of plugin list; there's no reason to run
|
|
# both. In practice the Unplugger plugin above would cover us when
|
|
# run from a standard numpy.test() call; this is just in case
|
|
# someone wants to run our plugin outside the numpy.test() machinery
|
|
config.plugins.plugins = [p for p in config.plugins.plugins
|
|
if p.name != 'doctest']
|
|
|
|
def set_test_context(self, test):
|
|
""" Configure `test` object to set test context
|
|
|
|
We set the numpy / scipy standard doctest namespace
|
|
|
|
Parameters
|
|
----------
|
|
test : test object
|
|
with ``globs`` dictionary defining namespace
|
|
|
|
Returns
|
|
-------
|
|
None
|
|
|
|
Notes
|
|
-----
|
|
`test` object modified in place
|
|
"""
|
|
# set the namespace for tests
|
|
pkg_name = get_package_name(os.path.dirname(test.filename))
|
|
|
|
# Each doctest should execute in an environment equivalent to
|
|
# starting Python and executing "import numpy as np", and,
|
|
# for SciPy packages, an additional import of the local
|
|
# package (so that scipy.linalg.basic.py's doctests have an
|
|
# implicit "from scipy import linalg" as well).
|
|
#
|
|
# Note: __file__ allows the doctest in NoseTester to run
|
|
# without producing an error
|
|
test.globs = {'__builtins__':__builtins__,
|
|
'__file__':'__main__',
|
|
'__name__':'__main__',
|
|
'np':numpy}
|
|
# add appropriate scipy import for SciPy tests
|
|
if 'scipy' in pkg_name:
|
|
p = pkg_name.split('.')
|
|
p2 = p[-1]
|
|
test.globs[p2] = __import__(pkg_name, test.globs, {}, [p2])
|
|
|
|
# Override test loading to customize test context (with set_test_context
|
|
# method), set standard docstring options, and install our own test output
|
|
# checker
|
|
def loadTestsFromModule(self, module):
|
|
if not self.matches(module.__name__):
|
|
npd.log.debug("Doctest doesn't want module %s", module)
|
|
return
|
|
try:
|
|
tests = self.finder.find(module)
|
|
except AttributeError:
|
|
# nose allows module.__test__ = False; doctest does not and
|
|
# throws AttributeError
|
|
return
|
|
if not tests:
|
|
return
|
|
tests.sort()
|
|
module_file = src(module.__file__)
|
|
for test in tests:
|
|
if not test.examples:
|
|
continue
|
|
if not test.filename:
|
|
test.filename = module_file
|
|
# Set test namespace; test altered in place
|
|
self.set_test_context(test)
|
|
yield self.doctest_case_class(test,
|
|
optionflags=self.doctest_optflags,
|
|
checker=self.out_check_class(),
|
|
result_var=self.doctest_result_var)
|
|
|
|
# Add an afterContext method to nose.plugins.doctests.Doctest in order
|
|
# to restore print options to the original state after each doctest
|
|
def afterContext(self):
|
|
numpy.set_printoptions(**print_state)
|
|
|
|
# Ignore NumPy-specific build files that shouldn't be searched for tests
|
|
def wantFile(self, file):
|
|
bn = os.path.basename(file)
|
|
if bn in self.doctest_ignore:
|
|
return False
|
|
return npd.Doctest.wantFile(self, file)
|
|
|
|
|
|
class Unplugger:
|
|
""" Nose plugin to remove named plugin late in loading
|
|
|
|
By default it removes the "doctest" plugin.
|
|
"""
|
|
name = 'unplugger'
|
|
enabled = True # always enabled
|
|
score = 4000 # load late in order to be after builtins
|
|
|
|
def __init__(self, to_unplug='doctest'):
|
|
self.to_unplug = to_unplug
|
|
|
|
def options(self, parser, env):
|
|
pass
|
|
|
|
def configure(self, options, config):
|
|
# Pull named plugin out of plugins list
|
|
config.plugins.plugins = [p for p in config.plugins.plugins
|
|
if p.name != self.to_unplug]
|
|
|
|
|
|
class KnownFailurePlugin(ErrorClassPlugin):
|
|
'''Plugin that installs a KNOWNFAIL error class for the
|
|
KnownFailureClass exception. When KnownFailure is raised,
|
|
the exception will be logged in the knownfail attribute of the
|
|
result, 'K' or 'KNOWNFAIL' (verbose) will be output, and the
|
|
exception will not be counted as an error or failure.'''
|
|
enabled = True
|
|
knownfail = ErrorClass(KnownFailureException,
|
|
label='KNOWNFAIL',
|
|
isfailure=False)
|
|
|
|
def options(self, parser, env=os.environ):
|
|
env_opt = 'NOSE_WITHOUT_KNOWNFAIL'
|
|
parser.add_option('--no-knownfail', action='store_true',
|
|
dest='noKnownFail', default=env.get(env_opt, False),
|
|
help='Disable special handling of KnownFailure '
|
|
'exceptions')
|
|
|
|
def configure(self, options, conf):
|
|
if not self.can_configure:
|
|
return
|
|
self.conf = conf
|
|
disable = getattr(options, 'noKnownFail', False)
|
|
if disable:
|
|
self.enabled = False
|
|
|
|
KnownFailure = KnownFailurePlugin # backwards compat
|
|
|
|
|
|
class FPUModeCheckPlugin(Plugin):
|
|
"""
|
|
Plugin that checks the FPU mode before and after each test,
|
|
raising failures if the test changed the mode.
|
|
"""
|
|
|
|
def prepareTestCase(self, test):
|
|
from numpy.core._multiarray_tests import get_fpu_mode
|
|
|
|
def run(result):
|
|
old_mode = get_fpu_mode()
|
|
test.test(result)
|
|
new_mode = get_fpu_mode()
|
|
|
|
if old_mode != new_mode:
|
|
try:
|
|
raise AssertionError(
|
|
"FPU mode changed from {0:#x} to {1:#x} during the "
|
|
"test".format(old_mode, new_mode))
|
|
except AssertionError:
|
|
result.addFailure(test, sys.exc_info())
|
|
|
|
return run
|
|
|
|
|
|
# Class allows us to save the results of the tests in runTests - see runTests
|
|
# method docstring for details
|
|
class NumpyTestProgram(nose.core.TestProgram):
|
|
def runTests(self):
|
|
"""Run Tests. Returns true on success, false on failure, and
|
|
sets self.success to the same value.
|
|
|
|
Because nose currently discards the test result object, but we need
|
|
to return it to the user, override TestProgram.runTests to retain
|
|
the result
|
|
"""
|
|
if self.testRunner is None:
|
|
self.testRunner = nose.core.TextTestRunner(stream=self.config.stream,
|
|
verbosity=self.config.verbosity,
|
|
config=self.config)
|
|
plug_runner = self.config.plugins.prepareTestRunner(self.testRunner)
|
|
if plug_runner is not None:
|
|
self.testRunner = plug_runner
|
|
self.result = self.testRunner.run(self.test)
|
|
self.success = self.result.wasSuccessful()
|
|
return self.success
|