/usr/lib/python2.7/dist-packages/sphinx/ext/doctest.py is in python-sphinx 1.4.9-2.
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"""
sphinx.ext.doctest
~~~~~~~~~~~~~~~~~~
Mimic doctest by automatically executing code snippets and checking
their results.
:copyright: Copyright 2007-2016 by the Sphinx team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
from __future__ import absolute_import
import re
import sys
import time
import codecs
from os import path
import doctest
from six import itervalues, StringIO, binary_type, text_type, PY2
from docutils import nodes
from docutils.parsers.rst import directives
import sphinx
from sphinx.builders import Builder
from sphinx.util import force_decode
from sphinx.util.nodes import set_source_info
from sphinx.util.compat import Directive
from sphinx.util.console import bold
from sphinx.util.osutil import fs_encoding
blankline_re = re.compile(r'^\s*<BLANKLINE>', re.MULTILINE)
doctestopt_re = re.compile(r'#\s*doctest:.+$', re.MULTILINE)
if PY2:
def doctest_encode(text, encoding):
if isinstance(text, text_type):
text = text.encode(encoding)
if text.startswith(codecs.BOM_UTF8):
text = text[len(codecs.BOM_UTF8):]
return text
else:
def doctest_encode(text, encoding):
return text
# set up the necessary directives
class TestDirective(Directive):
"""
Base class for doctest-related directives.
"""
has_content = True
required_arguments = 0
optional_arguments = 1
final_argument_whitespace = True
def run(self):
# use ordinary docutils nodes for test code: they get special attributes
# so that our builder recognizes them, and the other builders are happy.
code = '\n'.join(self.content)
test = None
if self.name == 'doctest':
if '<BLANKLINE>' in code:
# convert <BLANKLINE>s to ordinary blank lines for presentation
test = code
code = blankline_re.sub('', code)
if doctestopt_re.search(code):
if not test:
test = code
code = doctestopt_re.sub('', code)
nodetype = nodes.literal_block
if self.name in ('testsetup', 'testcleanup') or 'hide' in self.options:
nodetype = nodes.comment
if self.arguments:
groups = [x.strip() for x in self.arguments[0].split(',')]
else:
groups = ['default']
node = nodetype(code, code, testnodetype=self.name, groups=groups)
set_source_info(self, node)
if test is not None:
# only save if it differs from code
node['test'] = test
if self.name == 'testoutput':
# don't try to highlight output
node['language'] = 'none'
node['options'] = {}
if self.name in ('doctest', 'testoutput') and 'options' in self.options:
# parse doctest-like output comparison flags
option_strings = self.options['options'].replace(',', ' ').split()
for option in option_strings:
if (option[0] not in '+-' or option[1:] not in
doctest.OPTIONFLAGS_BY_NAME):
# XXX warn?
continue
flag = doctest.OPTIONFLAGS_BY_NAME[option[1:]]
node['options'][flag] = (option[0] == '+')
return [node]
class TestsetupDirective(TestDirective):
option_spec = {}
class TestcleanupDirective(TestDirective):
option_spec = {}
class DoctestDirective(TestDirective):
option_spec = {
'hide': directives.flag,
'options': directives.unchanged,
}
class TestcodeDirective(TestDirective):
option_spec = {
'hide': directives.flag,
}
class TestoutputDirective(TestDirective):
option_spec = {
'hide': directives.flag,
'options': directives.unchanged,
}
parser = doctest.DocTestParser()
# helper classes
class TestGroup(object):
def __init__(self, name):
self.name = name
self.setup = []
self.tests = []
self.cleanup = []
def add_code(self, code, prepend=False):
if code.type == 'testsetup':
if prepend:
self.setup.insert(0, code)
else:
self.setup.append(code)
elif code.type == 'testcleanup':
self.cleanup.append(code)
elif code.type == 'doctest':
self.tests.append([code])
elif code.type == 'testcode':
self.tests.append([code, None])
elif code.type == 'testoutput':
if self.tests and len(self.tests[-1]) == 2:
self.tests[-1][1] = code
else:
raise RuntimeError('invalid TestCode type')
def __repr__(self):
return 'TestGroup(name=%r, setup=%r, cleanup=%r, tests=%r)' % (
self.name, self.setup, self.cleanup, self.tests)
class TestCode(object):
def __init__(self, code, type, lineno, options=None):
self.code = code
self.type = type
self.lineno = lineno
self.options = options or {}
def __repr__(self):
return 'TestCode(%r, %r, %r, options=%r)' % (
self.code, self.type, self.lineno, self.options)
class SphinxDocTestRunner(doctest.DocTestRunner):
def summarize(self, out, verbose=None):
string_io = StringIO()
old_stdout = sys.stdout
sys.stdout = string_io
try:
res = doctest.DocTestRunner.summarize(self, verbose)
finally:
sys.stdout = old_stdout
out(string_io.getvalue())
return res
def _DocTestRunner__patched_linecache_getlines(self, filename,
module_globals=None):
# this is overridden from DocTestRunner adding the try-except below
m = self._DocTestRunner__LINECACHE_FILENAME_RE.match(filename)
if m and m.group('name') == self.test.name:
try:
example = self.test.examples[int(m.group('examplenum'))]
# because we compile multiple doctest blocks with the same name
# (viz. the group name) this might, for outer stack frames in a
# traceback, get the wrong test which might not have enough examples
except IndexError:
pass
else:
return example.source.splitlines(True)
return self.save_linecache_getlines(filename, module_globals)
# the new builder -- use sphinx-build.py -b doctest to run
class DocTestBuilder(Builder):
"""
Runs test snippets in the documentation.
"""
name = 'doctest'
def init(self):
# default options
self.opt = doctest.DONT_ACCEPT_TRUE_FOR_1 | doctest.ELLIPSIS | \
doctest.IGNORE_EXCEPTION_DETAIL
# HACK HACK HACK
# doctest compiles its snippets with type 'single'. That is nice
# for doctest examples but unusable for multi-statement code such
# as setup code -- to be able to use doctest error reporting with
# that code nevertheless, we monkey-patch the "compile" it uses.
doctest.compile = self.compile
sys.path[0:0] = self.config.doctest_path
self.type = 'single'
self.total_failures = 0
self.total_tries = 0
self.setup_failures = 0
self.setup_tries = 0
self.cleanup_failures = 0
self.cleanup_tries = 0
date = time.strftime('%Y-%m-%d %H:%M:%S')
self.outfile = codecs.open(path.join(self.outdir, 'output.txt'),
'w', encoding='utf-8')
self.outfile.write('''\
Results of doctest builder run on %s
==================================%s
''' % (date, '='*len(date)))
def _out(self, text):
self.info(text, nonl=True)
self.outfile.write(text)
def _warn_out(self, text):
if self.app.quiet or self.app.warningiserror:
self.warn(text)
else:
self.info(text, nonl=True)
if isinstance(text, binary_type):
text = force_decode(text, None)
self.outfile.write(text)
def get_target_uri(self, docname, typ=None):
return ''
def get_outdated_docs(self):
return self.env.found_docs
def finish(self):
# write executive summary
def s(v):
return v != 1 and 's' or ''
repl = (self.total_tries, s(self.total_tries),
self.total_failures, s(self.total_failures),
self.setup_failures, s(self.setup_failures),
self.cleanup_failures, s(self.cleanup_failures))
self._out('''
Doctest summary
===============
%5d test%s
%5d failure%s in tests
%5d failure%s in setup code
%5d failure%s in cleanup code
''' % repl)
self.outfile.close()
if self.total_failures or self.setup_failures or self.cleanup_failures:
self.app.statuscode = 1
def write(self, build_docnames, updated_docnames, method='update'):
if build_docnames is None:
build_docnames = sorted(self.env.all_docs)
self.info(bold('running tests...'))
for docname in build_docnames:
# no need to resolve the doctree
doctree = self.env.get_doctree(docname)
self.test_doc(docname, doctree)
def test_doc(self, docname, doctree):
groups = {}
add_to_all_groups = []
self.setup_runner = SphinxDocTestRunner(verbose=False,
optionflags=self.opt)
self.test_runner = SphinxDocTestRunner(verbose=False,
optionflags=self.opt)
self.cleanup_runner = SphinxDocTestRunner(verbose=False,
optionflags=self.opt)
self.test_runner._fakeout = self.setup_runner._fakeout
self.cleanup_runner._fakeout = self.setup_runner._fakeout
if self.config.doctest_test_doctest_blocks:
def condition(node):
return (isinstance(node, (nodes.literal_block, nodes.comment)) and
'testnodetype' in node) or \
isinstance(node, nodes.doctest_block)
else:
def condition(node):
return isinstance(node, (nodes.literal_block, nodes.comment)) \
and 'testnodetype' in node
for node in doctree.traverse(condition):
source = 'test' in node and node['test'] or node.astext()
if not source:
self.warn('no code/output in %s block at %s:%s' %
(node.get('testnodetype', 'doctest'),
self.env.doc2path(docname), node.line))
code = TestCode(source, type=node.get('testnodetype', 'doctest'),
lineno=node.line, options=node.get('options'))
node_groups = node.get('groups', ['default'])
if '*' in node_groups:
add_to_all_groups.append(code)
continue
for groupname in node_groups:
if groupname not in groups:
groups[groupname] = TestGroup(groupname)
groups[groupname].add_code(code)
for code in add_to_all_groups:
for group in itervalues(groups):
group.add_code(code)
if self.config.doctest_global_setup:
code = TestCode(self.config.doctest_global_setup,
'testsetup', lineno=0)
for group in itervalues(groups):
group.add_code(code, prepend=True)
if self.config.doctest_global_cleanup:
code = TestCode(self.config.doctest_global_cleanup,
'testcleanup', lineno=0)
for group in itervalues(groups):
group.add_code(code)
if not groups:
return
self._out('\nDocument: %s\n----------%s\n' %
(docname, '-'*len(docname)))
for group in itervalues(groups):
self.test_group(group, self.env.doc2path(docname, base=None))
# Separately count results from setup code
res_f, res_t = self.setup_runner.summarize(self._out, verbose=False)
self.setup_failures += res_f
self.setup_tries += res_t
if self.test_runner.tries:
res_f, res_t = self.test_runner.summarize(self._out, verbose=True)
self.total_failures += res_f
self.total_tries += res_t
if self.cleanup_runner.tries:
res_f, res_t = self.cleanup_runner.summarize(self._out,
verbose=True)
self.cleanup_failures += res_f
self.cleanup_tries += res_t
def compile(self, code, name, type, flags, dont_inherit):
return compile(code, name, self.type, flags, dont_inherit)
def test_group(self, group, filename):
if PY2:
filename_str = filename.encode(fs_encoding)
else:
filename_str = filename
ns = {}
def run_setup_cleanup(runner, testcodes, what):
examples = []
for testcode in testcodes:
examples.append(doctest.Example(
doctest_encode(testcode.code, self.env.config.source_encoding), '',
lineno=testcode.lineno))
if not examples:
return True
# simulate a doctest with the code
sim_doctest = doctest.DocTest(examples, {},
'%s (%s code)' % (group.name, what),
filename_str, 0, None)
sim_doctest.globs = ns
old_f = runner.failures
self.type = 'exec' # the snippet may contain multiple statements
runner.run(sim_doctest, out=self._warn_out, clear_globs=False)
if runner.failures > old_f:
return False
return True
# run the setup code
if not run_setup_cleanup(self.setup_runner, group.setup, 'setup'):
# if setup failed, don't run the group
return
# run the tests
for code in group.tests:
if len(code) == 1:
# ordinary doctests (code/output interleaved)
try:
test = parser.get_doctest(
doctest_encode(code[0].code, self.env.config.source_encoding), {},
group.name, filename_str, code[0].lineno)
except Exception:
self.warn('ignoring invalid doctest code: %r' %
code[0].code,
'%s:%s' % (filename, code[0].lineno))
continue
if not test.examples:
continue
for example in test.examples:
# apply directive's comparison options
new_opt = code[0].options.copy()
new_opt.update(example.options)
example.options = new_opt
self.type = 'single' # as for ordinary doctests
else:
# testcode and output separate
output = code[1] and code[1].code or ''
options = code[1] and code[1].options or {}
# disable <BLANKLINE> processing as it is not needed
options[doctest.DONT_ACCEPT_BLANKLINE] = True
# find out if we're testing an exception
m = parser._EXCEPTION_RE.match(output)
if m:
exc_msg = m.group('msg')
else:
exc_msg = None
example = doctest.Example(
doctest_encode(code[0].code, self.env.config.source_encoding), output,
exc_msg=exc_msg,
lineno=code[0].lineno,
options=options)
test = doctest.DocTest([example], {}, group.name,
filename_str, code[0].lineno, None)
self.type = 'exec' # multiple statements again
# DocTest.__init__ copies the globs namespace, which we don't want
test.globs = ns
# also don't clear the globs namespace after running the doctest
self.test_runner.run(test, out=self._warn_out, clear_globs=False)
# run the cleanup
run_setup_cleanup(self.cleanup_runner, group.cleanup, 'cleanup')
def setup(app):
app.add_directive('testsetup', TestsetupDirective)
app.add_directive('testcleanup', TestcleanupDirective)
app.add_directive('doctest', DoctestDirective)
app.add_directive('testcode', TestcodeDirective)
app.add_directive('testoutput', TestoutputDirective)
app.add_builder(DocTestBuilder)
# this config value adds to sys.path
app.add_config_value('doctest_path', [], False)
app.add_config_value('doctest_test_doctest_blocks', 'default', False)
app.add_config_value('doctest_global_setup', '', False)
app.add_config_value('doctest_global_cleanup', '', False)
return {'version': sphinx.__display_version__, 'parallel_read_safe': True}
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