inputhooks

This commit is contained in:
Vitor Santos Costa
2018-01-05 17:13:37 +00:00
parent 1cff18d1c0
commit 791484c132
111 changed files with 20555 additions and 0 deletions

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"""Simple example using doctests.
This file just contains doctests both using plain python and yap_ipython prompts.
All tests should be loaded by nose.
"""
def pyfunc():
"""Some pure python tests...
>>> pyfunc()
'pyfunc'
>>> import os
>>> 2+3
5
>>> for i in range(3):
... print(i, end=' ')
... print(i+1, end=' ')
...
0 1 1 2 2 3
"""
return 'pyfunc'
def ipfunc():
"""Some ipython tests...
In [1]: import os
In [3]: 2+3
Out[3]: 5
In [26]: for i in range(3):
....: print(i, end=' ')
....: print(i+1, end=' ')
....:
0 1 1 2 2 3
Examples that access the operating system work:
In [1]: !echo hello
hello
In [2]: !echo hello > /tmp/foo_iptest
In [3]: !cat /tmp/foo_iptest
hello
In [4]: rm -f /tmp/foo_iptest
It's OK to use '_' for the last result, but do NOT try to use yap_ipython's
numbered history of _NN outputs, since those won't exist under the
doctest environment:
In [7]: 'hi'
Out[7]: 'hi'
In [8]: print(repr(_))
'hi'
In [7]: 3+4
Out[7]: 7
In [8]: _+3
Out[8]: 10
In [9]: ipfunc()
Out[9]: 'ipfunc'
"""
return 'ipfunc'
def ranfunc():
"""A function with some random output.
Normal examples are verified as usual:
>>> 1+3
4
But if you put '# random' in the output, it is ignored:
>>> 1+3
junk goes here... # random
>>> 1+2
again, anything goes #random
if multiline, the random mark is only needed once.
>>> 1+2
You can also put the random marker at the end:
# random
>>> 1+2
# random
.. or at the beginning.
More correct input is properly verified:
>>> ranfunc()
'ranfunc'
"""
return 'ranfunc'
def random_all():
"""A function where we ignore the output of ALL examples.
Examples:
# all-random
This mark tells the testing machinery that all subsequent examples should
be treated as random (ignoring their output). They are still executed,
so if a they raise an error, it will be detected as such, but their
output is completely ignored.
>>> 1+3
junk goes here...
>>> 1+3
klasdfj;
>>> 1+2
again, anything goes
blah...
"""
pass
def iprand():
"""Some ipython tests with random output.
In [7]: 3+4
Out[7]: 7
In [8]: print('hello')
world # random
In [9]: iprand()
Out[9]: 'iprand'
"""
return 'iprand'
def iprand_all():
"""Some ipython tests with fully random output.
# all-random
In [7]: 1
Out[7]: 99
In [8]: print('hello')
world
In [9]: iprand_all()
Out[9]: 'junk'
"""
return 'iprand_all'

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"""Nose Plugin that supports yap_ipython doctests.
Limitations:
- When generating examples for use as doctests, make sure that you have
pretty-printing OFF. This can be done either by setting the
``PlainTextFormatter.pprint`` option in your configuration file to False, or
by interactively disabling it with %Pprint. This is required so that yap_ipython
output matches that of normal Python, which is used by doctest for internal
execution.
- Do not rely on specific prompt numbers for results (such as using
'_34==True', for example). For yap_ipython tests run via an external process the
prompt numbers may be different, and yap_ipython tests run as normal python code
won't even have these special _NN variables set at all.
"""
#-----------------------------------------------------------------------------
# Module imports
# From the standard library
import builtins as builtin_mod
import doctest
import inspect
import logging
import os
import re
import sys
from importlib import import_module
from io import StringIO
from testpath import modified_env
from inspect import getmodule
# We are overriding the default doctest runner, so we need to import a few
# things from doctest directly
from doctest import (REPORTING_FLAGS, REPORT_ONLY_FIRST_FAILURE,
_unittest_reportflags, DocTestRunner,
_extract_future_flags, pdb, _OutputRedirectingPdb,
_exception_traceback,
linecache)
# Third-party modules
from nose.plugins import doctests, Plugin
from nose.util import anyp, tolist
#-----------------------------------------------------------------------------
# Module globals and other constants
#-----------------------------------------------------------------------------
log = logging.getLogger(__name__)
#-----------------------------------------------------------------------------
# Classes and functions
#-----------------------------------------------------------------------------
def is_extension_module(filename):
"""Return whether the given filename is an extension module.
This simply checks that the extension is either .so or .pyd.
"""
return os.path.splitext(filename)[1].lower() in ('.so','.pyd')
class DocTestSkip(object):
"""Object wrapper for doctests to be skipped."""
ds_skip = """Doctest to skip.
>>> 1 #doctest: +SKIP
"""
def __init__(self,obj):
self.obj = obj
def __getattribute__(self,key):
if key == '__doc__':
return DocTestSkip.ds_skip
else:
return getattr(object.__getattribute__(self,'obj'),key)
# Modified version of the one in the stdlib, that fixes a python bug (doctests
# not found in extension modules, http://bugs.python.org/issue3158)
class DocTestFinder(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.
elif inspect.ismethoddescriptor(object):
# Unbound PyQt signals reach this point in Python 3.4b3, and we want
# to avoid throwing an error. See also http://bugs.python.org/issue3158
return False
else:
raise ValueError("object must be a class or function, got %r" % object)
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`.
"""
print('_find for:', obj, name, module) # dbg
if hasattr(obj,"skip_doctest"):
#print 'SKIPPING DOCTEST FOR:',obj # dbg
obj = DocTestSkip(obj)
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
# Look for tests in a module's contained objects.
if inspect.ismodule(obj) and self._recurse:
for valname, val in obj.__dict__.items():
valname1 = '%s.%s' % (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 inspect.isclass(obj) and self._recurse:
#print 'RECURSE into class:',obj # dbg
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 ((inspect.isfunction(val) or inspect.isclass(val) or
inspect.ismethod(val) or
isinstance(val, property)) and
self._from_module(module, val)):
valname = '%s.%s' % (name, valname)
self._find(tests, val, valname, module, source_lines,
globs, seen)
class IPDoctestOutputChecker(doctest.OutputChecker):
"""Second-chance checker with support for random tests.
If the default comparison doesn't pass, this checker looks in the expected
output string for flags that tell us to ignore the output.
"""
random_re = re.compile(r'#\s*random\s+')
def check_output(self, want, got, optionflags):
"""Check output, accepting special markers embedded in the output.
If the output didn't pass the default validation but the special string
'#random' is included, we accept it."""
# Let the original tester verify first, in case people have valid tests
# that happen to have a comment saying '#random' embedded in.
ret = doctest.OutputChecker.check_output(self, want, got,
optionflags)
if not ret and self.random_re.search(want):
#print >> sys.stderr, 'RANDOM OK:',want # dbg
return True
return ret
class DocTestCase(doctests.DocTestCase):
"""Proxy for DocTestCase: provides an address() method that
returns the correct address for the doctest case. Otherwise
acts as a proxy to the test case. To provide hints for address(),
an obj may also be passed -- this will be used as the test object
for purposes of determining the test address, if it is provided.
"""
# Note: this method was taken from numpy's nosetester module.
# 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
def __init__(self, test, optionflags=0, setUp=None, tearDown=None,
checker=None, obj=None, result_var='_'):
self._result_var = result_var
doctests.DocTestCase.__init__(self, test,
optionflags=optionflags,
setUp=setUp, tearDown=tearDown,
checker=checker)
# Now we must actually copy the original constructor from the stdlib
# doctest class, because we can't call it directly and a bug in nose
# means it never gets passed the right arguments.
self._dt_optionflags = optionflags
self._dt_checker = checker
self._dt_test = test
self._dt_test_globs_ori = test.globs
self._dt_setUp = setUp
self._dt_tearDown = tearDown
# XXX - store this runner once in the object!
runner = IPDocTestRunner(optionflags=optionflags,
checker=checker, verbose=False)
self._dt_runner = runner
# Each doctest should remember the directory it was loaded from, so
# things like %run work without too many contortions
self._ori_dir = os.path.dirname(test.filename)
# Modified runTest from the default stdlib
def runTest(self):
test = self._dt_test
runner = self._dt_runner
old = sys.stdout
new = StringIO()
optionflags = self._dt_optionflags
if not (optionflags & REPORTING_FLAGS):
# The option flags don't include any reporting flags,
# so add the default reporting flags
optionflags |= _unittest_reportflags
try:
# Save our current directory and switch out to the one where the
# test was originally created, in case another doctest did a
# directory change. We'll restore this in the finally clause.
curdir = os.getcwd()
#print 'runTest in dir:', self._ori_dir # dbg
os.chdir(self._ori_dir)
runner.DIVIDER = "-"*70
failures, tries = runner.run(test,out=new.write,
clear_globs=False)
finally:
sys.stdout = old
os.chdir(curdir)
if failures:
raise self.failureException(self.format_failure(new.getvalue()))
def setUp(self):
"""Modified test setup that syncs with ipython namespace"""
#print "setUp test", self._dt_test.examples # dbg
if isinstance(self._dt_test.examples[0], IPExample):
# for yap_ipython examples *only*, we swap the globals with the ipython
# namespace, after updating it with the globals (which doctest
# fills with the necessary info from the module being tested).
self.user_ns_orig = {}
self.user_ns_orig.update(_ip.user_ns)
_ip.user_ns.update(self._dt_test.globs)
# We must remove the _ key in the namespace, so that Python's
# doctest code sets it naturally
_ip.user_ns.pop('_', None)
_ip.user_ns['__builtins__'] = builtin_mod
self._dt_test.globs = _ip.user_ns
super(DocTestCase, self).setUp()
def tearDown(self):
# Undo the test.globs reassignment we made, so that the parent class
# teardown doesn't destroy the ipython namespace
if isinstance(self._dt_test.examples[0], IPExample):
self._dt_test.globs = self._dt_test_globs_ori
_ip.user_ns.clear()
_ip.user_ns.update(self.user_ns_orig)
# XXX - fperez: I am not sure if this is truly a bug in nose 0.11, but
# it does look like one to me: its tearDown method tries to run
#
# delattr(builtin_mod, self._result_var)
#
# without checking that the attribute really is there; it implicitly
# assumes it should have been set via displayhook. But if the
# displayhook was never called, this doesn't necessarily happen. I
# haven't been able to find a little self-contained example outside of
# ipython that would show the problem so I can report it to the nose
# team, but it does happen a lot in our code.
#
# So here, we just protect as narrowly as possible by trapping an
# attribute error whose message would be the name of self._result_var,
# and letting any other error propagate.
try:
super(DocTestCase, self).tearDown()
except AttributeError as exc:
if exc.args[0] != self._result_var:
raise
# A simple subclassing of the original with a different class name, so we can
# distinguish and treat differently yap_ipython examples from pure python ones.
class IPExample(doctest.Example): pass
class IPExternalExample(doctest.Example):
"""Doctest examples to be run in an external process."""
def __init__(self, source, want, exc_msg=None, lineno=0, indent=0,
options=None):
# Parent constructor
doctest.Example.__init__(self,source,want,exc_msg,lineno,indent,options)
# An EXTRA newline is needed to prevent pexpect hangs
self.source += '\n'
class IPDocTestParser(doctest.DocTestParser):
"""
A class used to parse strings containing doctest examples.
Note: This is a version modified to properly recognize yap_ipython input and
convert any yap_ipython examples into valid Python ones.
"""
# This regular expression is used to find doctest examples in a
# string. It defines three groups: `source` is the source code
# (including leading indentation and prompts); `indent` is the
# indentation of the first (PS1) line of the source code; and
# `want` is the expected output (including leading indentation).
# Classic Python prompts or default yap_ipython ones
_PS1_PY = r'>>>'
_PS2_PY = r'\.\.\.'
_PS1_IP = r'In\ \[\d+\]:'
_PS2_IP = r'\ \ \ \.\.\.+:'
_RE_TPL = r'''
# Source consists of a PS1 line followed by zero or more PS2 lines.
(?P<source>
(?:^(?P<indent> [ ]*) (?P<ps1> %s) .*) # PS1 line
(?:\n [ ]* (?P<ps2> %s) .*)*) # PS2 lines
\n? # a newline
# Want consists of any non-blank lines that do not start with PS1.
(?P<want> (?:(?![ ]*$) # Not a blank line
(?![ ]*%s) # Not a line starting with PS1
(?![ ]*%s) # Not a line starting with PS2
.*$\n? # But any other line
)*)
'''
_EXAMPLE_RE_PY = re.compile( _RE_TPL % (_PS1_PY,_PS2_PY,_PS1_PY,_PS2_PY),
re.MULTILINE | re.VERBOSE)
_EXAMPLE_RE_IP = re.compile( _RE_TPL % (_PS1_IP,_PS2_IP,_PS1_IP,_PS2_IP),
re.MULTILINE | re.VERBOSE)
# Mark a test as being fully random. In this case, we simply append the
# random marker ('#random') to each individual example's output. This way
# we don't need to modify any other code.
_RANDOM_TEST = re.compile(r'#\s*all-random\s+')
# Mark tests to be executed in an external process - currently unsupported.
_EXTERNAL_IP = re.compile(r'#\s*ipdoctest:\s*EXTERNAL')
def ip2py(self,source):
"""Convert input yap_ipython source into valid Python."""
block = _ip.input_transformer_manager.transform_cell(source)
if len(block.splitlines()) == 1:
return _ip.prefilter(block)
else:
return block
def parse(self, string, name='<string>'):
"""
Divide the given string into examples and intervening text,
and return them as a list of alternating Examples and strings.
Line numbers for the Examples are 0-based. The optional
argument `name` is a name identifying this string, and is only
used for error messages.
"""
#print 'Parse string:\n',string # dbg
string = string.expandtabs()
# If all lines begin with the same indentation, then strip it.
min_indent = self._min_indent(string)
if min_indent > 0:
string = '\n'.join([l[min_indent:] for l in string.split('\n')])
output = []
charno, lineno = 0, 0
# We make 'all random' tests by adding the '# random' mark to every
# block of output in the test.
if self._RANDOM_TEST.search(string):
random_marker = '\n# random'
else:
random_marker = ''
# Whether to convert the input from ipython to python syntax
ip2py = False
# Find all doctest examples in the string. First, try them as Python
# examples, then as yap_ipython ones
terms = list(self._EXAMPLE_RE_PY.finditer(string))
if terms:
# Normal Python example
#print '-'*70 # dbg
#print 'PyExample, Source:\n',string # dbg
#print '-'*70 # dbg
Example = doctest.Example
else:
# It's an ipython example. Note that IPExamples are run
# in-process, so their syntax must be turned into valid python.
# IPExternalExamples are run out-of-process (via pexpect) so they
# don't need any filtering (a real ipython will be executing them).
terms = list(self._EXAMPLE_RE_IP.finditer(string))
if self._EXTERNAL_IP.search(string):
#print '-'*70 # dbg
#print 'IPExternalExample, Source:\n',string # dbg
#print '-'*70 # dbg
Example = IPExternalExample
else:
#print '-'*70 # dbg
#print 'IPExample, Source:\n',string # dbg
#print '-'*70 # dbg
Example = IPExample
ip2py = True
for m in terms:
# Add the pre-example text to `output`.
output.append(string[charno:m.start()])
# Update lineno (lines before this example)
lineno += string.count('\n', charno, m.start())
# Extract info from the regexp match.
(source, options, want, exc_msg) = \
self._parse_example(m, name, lineno,ip2py)
# Append the random-output marker (it defaults to empty in most
# cases, it's only non-empty for 'all-random' tests):
want += random_marker
if Example is IPExternalExample:
options[doctest.NORMALIZE_WHITESPACE] = True
want += '\n'
# Create an Example, and add it to the list.
if not self._IS_BLANK_OR_COMMENT(source):
output.append(Example(source, want, exc_msg,
lineno=lineno,
indent=min_indent+len(m.group('indent')),
options=options))
# Update lineno (lines inside this example)
lineno += string.count('\n', m.start(), m.end())
# Update charno.
charno = m.end()
# Add any remaining post-example text to `output`.
output.append(string[charno:])
return output
def _parse_example(self, m, name, lineno,ip2py=False):
"""
Given a regular expression match from `_EXAMPLE_RE` (`m`),
return a pair `(source, want)`, where `source` is the matched
example's source code (with prompts and indentation stripped);
and `want` is the example's expected output (with indentation
stripped).
`name` is the string's name, and `lineno` is the line number
where the example starts; both are used for error messages.
Optional:
`ip2py`: if true, filter the input via yap_ipython to convert the syntax
into valid python.
"""
# Get the example's indentation level.
indent = len(m.group('indent'))
# Divide source into lines; check that they're properly
# indented; and then strip their indentation & prompts.
source_lines = m.group('source').split('\n')
# We're using variable-length input prompts
ps1 = m.group('ps1')
ps2 = m.group('ps2')
ps1_len = len(ps1)
self._check_prompt_blank(source_lines, indent, name, lineno,ps1_len)
if ps2:
self._check_prefix(source_lines[1:], ' '*indent + ps2, name, lineno)
source = '\n'.join([sl[indent+ps1_len+1:] for sl in source_lines])
if ip2py:
# Convert source input from yap_ipython into valid Python syntax
source = self.ip2py(source)
# Divide want into lines; check that it's properly indented; and
# then strip the indentation. Spaces before the last newline should
# be preserved, so plain rstrip() isn't good enough.
want = m.group('want')
want_lines = want.split('\n')
if len(want_lines) > 1 and re.match(r' *$', want_lines[-1]):
del want_lines[-1] # forget final newline & spaces after it
self._check_prefix(want_lines, ' '*indent, name,
lineno + len(source_lines))
# Remove ipython output prompt that might be present in the first line
want_lines[0] = re.sub(r'Out\[\d+\]: \s*?\n?','',want_lines[0])
want = '\n'.join([wl[indent:] for wl in want_lines])
# If `want` contains a traceback message, then extract it.
m = self._EXCEPTION_RE.match(want)
if m:
exc_msg = m.group('msg')
else:
exc_msg = None
# Extract options from the source.
options = self._find_options(source, name, lineno)
return source, options, want, exc_msg
def _check_prompt_blank(self, lines, indent, name, lineno, ps1_len):
"""
Given the lines of a source string (including prompts and
leading indentation), check to make sure that every prompt is
followed by a space character. If any line is not followed by
a space character, then raise ValueError.
Note: yap_ipython-modified version which takes the input prompt length as a
parameter, so that prompts of variable length can be dealt with.
"""
space_idx = indent+ps1_len
min_len = space_idx+1
for i, line in enumerate(lines):
if len(line) >= min_len and line[space_idx] != ' ':
raise ValueError('line %r of the docstring for %s '
'lacks blank after %s: %r' %
(lineno+i+1, name,
line[indent:space_idx], line))
SKIP = doctest.register_optionflag('SKIP')
class IPDocTestRunner(doctest.DocTestRunner,object):
"""Test runner that synchronizes the yap_ipython namespace with test globals.
"""
def run(self, test, compileflags=None, out=None, clear_globs=True):
# Hack: ipython needs access to the execution context of the example,
# so that it can propagate user variables loaded by %run into
# test.globs. We put them here into our modified %run as a function
# attribute. Our new %run will then only make the namespace update
# when called (rather than unconconditionally updating test.globs here
# for all examples, most of which won't be calling %run anyway).
#_ip._ipdoctest_test_globs = test.globs
#_ip._ipdoctest_test_filename = test.filename
test.globs.update(_ip.user_ns)
# Override terminal size to standardise traceback format
with modified_env({'COLUMNS': '80', 'LINES': '24'}):
return super(IPDocTestRunner,self).run(test,
compileflags,out,clear_globs)
class DocFileCase(doctest.DocFileCase):
"""Overrides to provide filename
"""
def address(self):
return (self._dt_test.filename, None, None)
class ExtensionDoctest(doctests.Doctest):
"""Nose Plugin that supports doctests in extension modules.
"""
name = 'extdoctest' # call nosetests with --with-extdoctest
enabled = True
def options(self, parser, env=os.environ):
Plugin.options(self, parser, env)
parser.add_option('--doctest-tests', action='store_true',
dest='doctest_tests',
default=env.get('NOSE_DOCTEST_TESTS',True),
help="Also look for doctests in test modules. "
"Note that classes, methods and functions should "
"have either doctests or non-doctest tests, "
"not both. [NOSE_DOCTEST_TESTS]")
parser.add_option('--doctest-extension', action="append",
dest="doctestExtension",
help="Also look for doctests in files with "
"this extension [NOSE_DOCTEST_EXTENSION]")
# Set the default as a list, if given in env; otherwise
# an additional value set on the command line will cause
# an error.
env_setting = env.get('NOSE_DOCTEST_EXTENSION')
if env_setting is not None:
parser.set_defaults(doctestExtension=tolist(env_setting))
def configure(self, options, config):
Plugin.configure(self, options, config)
# Pull standard doctest plugin out of config; we will do doctesting
config.plugins.plugins = [p for p in config.plugins.plugins
if p.name != 'doctest']
self.doctest_tests = options.doctest_tests
self.extension = tolist(options.doctestExtension)
self.parser = doctest.DocTestParser()
self.finder = DocTestFinder()
self.checker = IPDoctestOutputChecker()
self.globs = None
self.extraglobs = None
def loadTestsFromExtensionModule(self,filename):
bpath,mod = os.path.split(filename)
modname = os.path.splitext(mod)[0]
try:
sys.path.append(bpath)
module = import_module(modname)
tests = list(self.loadTestsFromModule(module))
finally:
sys.path.pop()
return tests
# NOTE: the method below is almost a copy of the original one in nose, with
# a few modifications to control output checking.
def loadTestsFromModule(self, module):
#print '*** ipdoctest - lTM',module # dbg
if not self.matches(module.__name__):
log.debug("Doctest doesn't want module %s", module)
return
tests = self.finder.find(module,globs=self.globs,
extraglobs=self.extraglobs)
if not tests:
return
# always use whitespace and ellipsis options
optionflags = doctest.NORMALIZE_WHITESPACE | doctest.ELLIPSIS
tests.sort()
module_file = module.__file__
if module_file[-4:] in ('.pyc', '.pyo'):
module_file = module_file[:-1]
for test in tests:
if not test.examples:
continue
if not test.filename:
test.filename = module_file
yield DocTestCase(test,
optionflags=optionflags,
checker=self.checker)
def loadTestsFromFile(self, filename):
#print "ipdoctest - from file", filename # dbg
if is_extension_module(filename):
for t in self.loadTestsFromExtensionModule(filename):
yield t
else:
if self.extension and anyp(filename.endswith, self.extension):
name = os.path.basename(filename)
dh = open(filename)
try:
doc = dh.read()
finally:
dh.close()
test = self.parser.get_doctest(
doc, globs={'__file__': filename}, name=name,
filename=filename, lineno=0)
if test.examples:
#print 'FileCase:',test.examples # dbg
yield DocFileCase(test)
else:
yield False # no tests to load
class IPythonDoctest(ExtensionDoctest):
"""Nose Plugin that supports doctests in extension modules.
"""
name = 'ipdoctest' # call nosetests with --with-ipdoctest
enabled = True
def makeTest(self, obj, parent):
"""Look for doctests in the given object, which will be a
function, method or class.
"""
#print 'Plugin analyzing:', obj, parent # dbg
# always use whitespace and ellipsis options
optionflags = doctest.NORMALIZE_WHITESPACE | doctest.ELLIPSIS
doctests = self.finder.find(obj, module=getmodule(parent))
if doctests:
for test in doctests:
if len(test.examples) == 0:
continue
yield DocTestCase(test, obj=obj,
optionflags=optionflags,
checker=self.checker)
def options(self, parser, env=os.environ):
#print "Options for nose plugin:", self.name # dbg
Plugin.options(self, parser, env)
parser.add_option('--ipdoctest-tests', action='store_true',
dest='ipdoctest_tests',
default=env.get('NOSE_IPDOCTEST_TESTS',True),
help="Also look for doctests in test modules. "
"Note that classes, methods and functions should "
"have either doctests or non-doctest tests, "
"not both. [NOSE_IPDOCTEST_TESTS]")
parser.add_option('--ipdoctest-extension', action="append",
dest="ipdoctest_extension",
help="Also look for doctests in files with "
"this extension [NOSE_IPDOCTEST_EXTENSION]")
# Set the default as a list, if given in env; otherwise
# an additional value set on the command line will cause
# an error.
env_setting = env.get('NOSE_IPDOCTEST_EXTENSION')
if env_setting is not None:
parser.set_defaults(ipdoctest_extension=tolist(env_setting))
def configure(self, options, config):
#print "Configuring nose plugin:", self.name # dbg
Plugin.configure(self, options, config)
# Pull standard doctest plugin out of config; we will do doctesting
config.plugins.plugins = [p for p in config.plugins.plugins
if p.name != 'doctest']
self.doctest_tests = options.ipdoctest_tests
self.extension = tolist(options.ipdoctest_extension)
self.parser = IPDocTestParser()
self.finder = DocTestFinder(parser=self.parser)
self.checker = IPDoctestOutputChecker()
self.globs = None
self.extraglobs = None

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#!/usr/bin/env python
"""Nose-based test runner.
"""
from nose.core import main
from nose.plugins.builtin import plugins
from nose.plugins.doctests import Doctest
from . import ipdoctest
from .ipdoctest import IPDocTestRunner
if __name__ == '__main__':
print('WARNING: this code is incomplete!')
print()
pp = [x() for x in plugins] # activate all builtin plugins first
main(testRunner=IPDocTestRunner(),
plugins=pp+[ipdoctest.IPythonDoctest(),Doctest()])

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#!/usr/bin/env python
"""A Nose plugin to support yap_ipython doctests.
"""
from setuptools import setup
setup(name='yap_ipython doctest plugin',
version='0.1',
author='The yap_ipython Team',
description = 'Nose plugin to load yap_ipython-extended doctests',
license = 'LGPL',
py_modules = ['ipdoctest'],
entry_points = {
'nose.plugins.0.10': ['ipdoctest = ipdoctest:IPythonDoctest',
'extdoctest = ipdoctest:ExtensionDoctest',
],
},
)

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"""Simple script to show reference holding behavior.
This is used by a companion test case.
"""
import gc
class C(object):
def __del__(self):
pass
#print 'deleting object...' # dbg
if __name__ == '__main__':
c = C()
c_refs = gc.get_referrers(c)
ref_ids = list(map(id,c_refs))
print('c referrers:',list(map(type,c_refs)))

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"""Simple example using doctests.
This file just contains doctests both using plain python and yap_ipython prompts.
All tests should be loaded by nose.
"""
def pyfunc():
"""Some pure python tests...
>>> pyfunc()
'pyfunc'
>>> import os
>>> 2+3
5
>>> for i in range(3):
... print(i, end=' ')
... print(i+1, end=' ')
...
0 1 1 2 2 3
"""
return 'pyfunc'
def ipyfunc2():
"""Some pure python tests...
>>> 1+1
2
"""
return 'pyfunc2'

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x = 1
print('x is:',x)

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"""Tests for the ipdoctest machinery itself.
Note: in a file named test_X, functions whose only test is their docstring (as
a doctest) and which have no test functionality of their own, should be called
'doctest_foo' instead of 'test_foo', otherwise they get double-counted (the
empty function call is counted as a test, which just inflates tests numbers
artificially).
"""
from yap_ipython.utils.py3compat import doctest_refactor_print
@doctest_refactor_print
def doctest_simple():
"""ipdoctest must handle simple inputs
In [1]: 1
Out[1]: 1
In [2]: print 1
1
"""
@doctest_refactor_print
def doctest_multiline1():
"""The ipdoctest machinery must handle multiline examples gracefully.
In [2]: for i in range(4):
...: print i
...:
0
1
2
3
"""
@doctest_refactor_print
def doctest_multiline2():
"""Multiline examples that define functions and print output.
In [7]: def f(x):
...: return x+1
...:
In [8]: f(1)
Out[8]: 2
In [9]: def g(x):
...: print 'x is:',x
...:
In [10]: g(1)
x is: 1
In [11]: g('hello')
x is: hello
"""
def doctest_multiline3():
"""Multiline examples with blank lines.
In [12]: def h(x):
....: if x>1:
....: return x**2
....: # To leave a blank line in the input, you must mark it
....: # with a comment character:
....: #
....: # otherwise the doctest parser gets confused.
....: else:
....: return -1
....:
In [13]: h(5)
Out[13]: 25
In [14]: h(1)
Out[14]: -1
In [15]: h(0)
Out[15]: -1
"""

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"""Some simple tests for the plugin while running scripts.
"""
# Module imports
# Std lib
import inspect
# Our own
#-----------------------------------------------------------------------------
# Testing functions
def test_trivial():
"""A trivial passing test."""
pass
def doctest_run():
"""Test running a trivial script.
In [13]: run simplevars.py
x is: 1
"""
def doctest_runvars():
"""Test that variables defined in scripts get loaded correcly via %run.
In [13]: run simplevars.py
x is: 1
In [14]: x
Out[14]: 1
"""
def doctest_ivars():
"""Test that variables defined interactively are picked up.
In [5]: zz=1
In [6]: zz
Out[6]: 1
"""
def doctest_refs():
"""DocTest reference holding issues when running scripts.
In [32]: run show_refs.py
c referrers: [<... 'dict'>]
"""

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# encoding: utf-8
__docformat__ = "restructuredtext en"
#-------------------------------------------------------------------------------
# Copyright (C) 2005 Fernando Perez <fperez@colorado.edu>
# Brian E Granger <ellisonbg@gmail.com>
# Benjamin Ragan-Kelley <benjaminrk@gmail.com>
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-------------------------------------------------------------------------------

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"""Tests for the decorators we've created for yap_ipython.
"""
# Module imports
# Std lib
import inspect
import sys
# Third party
import nose.tools as nt
# Our own
from yap_ipython.testing import decorators as dec
#-----------------------------------------------------------------------------
# Utilities
# Note: copied from OInspect, kept here so the testing stuff doesn't create
# circular dependencies and is easier to reuse.
def getargspec(obj):
"""Get the names and default values of a function's arguments.
A tuple of four things is returned: (args, varargs, varkw, defaults).
'args' is a list of the argument names (it may contain nested lists).
'varargs' and 'varkw' are the names of the * and ** arguments or None.
'defaults' is an n-tuple of the default values of the last n arguments.
Modified version of inspect.getargspec from the Python Standard
Library."""
if inspect.isfunction(obj):
func_obj = obj
elif inspect.ismethod(obj):
func_obj = obj.__func__
else:
raise TypeError('arg is not a Python function')
args, varargs, varkw = inspect.getargs(func_obj.__code__)
return args, varargs, varkw, func_obj.__defaults__
#-----------------------------------------------------------------------------
# Testing functions
@dec.as_unittest
def trivial():
"""A trivial test"""
pass
@dec.skip
def test_deliberately_broken():
"""A deliberately broken test - we want to skip this one."""
1/0
@dec.skip('Testing the skip decorator')
def test_deliberately_broken2():
"""Another deliberately broken test - we want to skip this one."""
1/0
# Verify that we can correctly skip the doctest for a function at will, but
# that the docstring itself is NOT destroyed by the decorator.
def doctest_bad(x,y=1,**k):
"""A function whose doctest we need to skip.
>>> 1+1
3
"""
print('x:',x)
print('y:',y)
print('k:',k)
def call_doctest_bad():
"""Check that we can still call the decorated functions.
>>> doctest_bad(3,y=4)
x: 3
y: 4
k: {}
"""
pass
def test_skip_dt_decorator():
"""Doctest-skipping decorator should preserve the docstring.
"""
# Careful: 'check' must be a *verbatim* copy of the doctest_bad docstring!
check = """A function whose doctest we need to skip.
>>> 1+1
3
"""
# Fetch the docstring from doctest_bad after decoration.
val = doctest_bad.__doc__
nt.assert_equal(check,val,"doctest_bad docstrings don't match")
# Doctest skipping should work for class methods too
class FooClass(object):
"""FooClass
Example:
>>> 1+1
2
"""
def __init__(self,x):
"""Make a FooClass.
Example:
>>> f = FooClass(3)
junk
"""
print('Making a FooClass.')
self.x = x
def bar(self,y):
"""Example:
>>> ff = FooClass(3)
>>> ff.bar(0)
boom!
>>> 1/0
bam!
"""
return 1/y
def baz(self,y):
"""Example:
>>> ff2 = FooClass(3)
Making a FooClass.
>>> ff2.baz(3)
True
"""
return self.x==y
def test_skip_dt_decorator2():
"""Doctest-skipping decorator should preserve function signature.
"""
# Hardcoded correct answer
dtargs = (['x', 'y'], None, 'k', (1,))
# Introspect out the value
dtargsr = getargspec(doctest_bad)
assert dtargsr==dtargs, \
"Incorrectly reconstructed args for doctest_bad: %s" % (dtargsr,)
@dec.skip_linux
def test_linux():
nt.assert_false(sys.platform.startswith('linux'),"This test can't run under linux")
@dec.skip_win32
def test_win32():
nt.assert_not_equal(sys.platform,'win32',"This test can't run under windows")
@dec.skip_osx
def test_osx():
nt.assert_not_equal(sys.platform,'darwin',"This test can't run under osx")

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"""Tests for yap_ipython's test support utilities.
These are decorators that allow standalone functions and docstrings to be seen
as tests by unittest, replicating some of nose's functionality. Additionally,
yap_ipython-syntax docstrings can be auto-converted to '>>>' so that ipython
sessions can be copy-pasted as tests.
This file can be run as a script, and it will call unittest.main(). We must
check that it works with unittest as well as with nose...
Notes:
- Using nosetests --with-doctest --doctest-tests testfile.py
will find docstrings as tests wherever they are, even in methods. But
if we use ipython syntax in the docstrings, they must be decorated with
@ipdocstring. This is OK for test-only code, but not for user-facing
docstrings where we want to keep the ipython syntax.
- Using nosetests --with-doctest file.py
also finds doctests if the file name doesn't have 'test' in it, because it is
treated like a normal module. But if nose treats the file like a test file,
then for normal classes to be doctested the extra --doctest-tests is
necessary.
- running this script with python (it has a __main__ section at the end) misses
one docstring test, the one embedded in the Foo object method. Since our
approach relies on using decorators that create standalone TestCase
instances, it can only be used for functions, not for methods of objects.
Authors
-------
- Fernando Perez <Fernando.Perez@berkeley.edu>
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2009-2011 The yap_ipython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
from yap_ipython.testing.ipunittest import ipdoctest, ipdocstring
from yap_ipython.utils.py3compat import doctest_refactor_print
#-----------------------------------------------------------------------------
# Test classes and functions
#-----------------------------------------------------------------------------
@ipdoctest
@doctest_refactor_print
def simple_dt():
"""
>>> print 1+1
2
"""
@ipdoctest
@doctest_refactor_print
def ipdt_flush():
"""
In [20]: print 1
1
In [26]: for i in range(4):
....: print i
....:
....:
0
1
2
3
In [27]: 3+4
Out[27]: 7
"""
@ipdoctest
@doctest_refactor_print
def ipdt_indented_test():
"""
In [20]: print 1
1
In [26]: for i in range(4):
....: print i
....:
....:
0
1
2
3
In [27]: 3+4
Out[27]: 7
"""
class Foo(object):
"""For methods, the normal decorator doesn't work.
But rewriting the docstring with ip2py does, *but only if using nose
--with-doctest*. Do we want to have that as a dependency?
"""
@ipdocstring
@doctest_refactor_print
def ipdt_method(self):
"""
In [20]: print 1
1
In [26]: for i in range(4):
....: print i
....:
....:
0
1
2
3
In [27]: 3+4
Out[27]: 7
"""
@doctest_refactor_print
def normaldt_method(self):
"""
>>> print 1+1
2
"""

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# encoding: utf-8
"""
Tests for testing.tools
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2008-2011 The yap_ipython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
import os
import unittest
import nose.tools as nt
from yap_ipython.testing import decorators as dec
from yap_ipython.testing import tools as tt
#-----------------------------------------------------------------------------
# Tests
#-----------------------------------------------------------------------------
@dec.skip_win32
def test_full_path_posix():
spath = '/foo/bar.py'
result = tt.full_path(spath,['a.txt','b.txt'])
nt.assert_equal(result, ['/foo/a.txt', '/foo/b.txt'])
spath = '/foo'
result = tt.full_path(spath,['a.txt','b.txt'])
nt.assert_equal(result, ['/a.txt', '/b.txt'])
result = tt.full_path(spath,'a.txt')
nt.assert_equal(result, ['/a.txt'])
@dec.skip_if_not_win32
def test_full_path_win32():
spath = 'c:\\foo\\bar.py'
result = tt.full_path(spath,['a.txt','b.txt'])
nt.assert_equal(result, ['c:\\foo\\a.txt', 'c:\\foo\\b.txt'])
spath = 'c:\\foo'
result = tt.full_path(spath,['a.txt','b.txt'])
nt.assert_equal(result, ['c:\\a.txt', 'c:\\b.txt'])
result = tt.full_path(spath,'a.txt')
nt.assert_equal(result, ['c:\\a.txt'])
def test_parser():
err = ("FAILED (errors=1)", 1, 0)
fail = ("FAILED (failures=1)", 0, 1)
both = ("FAILED (errors=1, failures=1)", 1, 1)
for txt, nerr, nfail in [err, fail, both]:
nerr1, nfail1 = tt.parse_test_output(txt)
nt.assert_equal(nerr, nerr1)
nt.assert_equal(nfail, nfail1)
def test_temp_pyfile():
src = 'pass\n'
fname, fh = tt.temp_pyfile(src)
assert os.path.isfile(fname)
fh.close()
with open(fname) as fh2:
src2 = fh2.read()
nt.assert_equal(src2, src)
class TestAssertPrints(unittest.TestCase):
def test_passing(self):
with tt.AssertPrints("abc"):
print("abcd")
print("def")
print(b"ghi")
def test_failing(self):
def func():
with tt.AssertPrints("abc"):
print("acd")
print("def")
print(b"ghi")
self.assertRaises(AssertionError, func)
class Test_ipexec_validate(unittest.TestCase, tt.TempFileMixin):
def test_main_path(self):
"""Test with only stdout results.
"""
self.mktmp("print('A')\n"
"print('B')\n"
)
out = "A\nB"
tt.ipexec_validate(self.fname, out)
def test_main_path2(self):
"""Test with only stdout results, expecting windows line endings.
"""
self.mktmp("print('A')\n"
"print('B')\n"
)
out = "A\r\nB"
tt.ipexec_validate(self.fname, out)
def test_exception_path(self):
"""Test exception path in exception_validate.
"""
self.mktmp("import sys\n"
"print('A')\n"
"print('B')\n"
"print('C', file=sys.stderr)\n"
"print('D', file=sys.stderr)\n"
)
out = "A\nB"
tt.ipexec_validate(self.fname, expected_out=out, expected_err="C\nD")
def test_exception_path2(self):
"""Test exception path in exception_validate, expecting windows line endings.
"""
self.mktmp("import sys\n"
"print('A')\n"
"print('B')\n"
"print('C', file=sys.stderr)\n"
"print('D', file=sys.stderr)\n"
)
out = "A\r\nB"
tt.ipexec_validate(self.fname, expected_out=out, expected_err="C\r\nD")
def tearDown(self):
# tear down correctly the mixin,
# unittest.TestCase.tearDown does nothing
tt.TempFileMixin.tearDown(self)