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"""Sphinx test suite utilities"""
import functools
import os
import re
import sys
import warnings
from io import StringIO
from typing import IO, Any, Dict, Generator, List, Pattern
from xml.etree import ElementTree
from docutils import nodes
from docutils.nodes import Node
from docutils.parsers.rst import directives, roles
from sphinx import application, locale
from sphinx.pycode import ModuleAnalyzer
from sphinx.testing.path import path
from sphinx.util.osutil import relpath
__all__ = [
'Struct', 'SphinxTestApp', 'SphinxTestAppWrapperForSkipBuilding',
]
def assert_re_search(regex: Pattern, text: str, flags: int = 0) -> None:
if not re.search(regex, text, flags):
assert False, '%r did not match %r' % (regex, text)
def assert_not_re_search(regex: Pattern, text: str, flags: int = 0) -> None:
if re.search(regex, text, flags):
assert False, '%r did match %r' % (regex, text)
def assert_startswith(thing: str, prefix: str) -> None:
if not thing.startswith(prefix):
assert False, '%r does not start with %r' % (thing, prefix)
def assert_node(node: Node, cls: Any = None, xpath: str = "", **kwargs: Any) -> None:
if cls:
if isinstance(cls, list):
assert_node(node, cls[0], xpath=xpath, **kwargs)
if cls[1:]:
if isinstance(cls[1], tuple):
assert_node(node, cls[1], xpath=xpath, **kwargs)
else:
assert isinstance(node, nodes.Element), \
'The node%s does not have any children' % xpath
assert len(node) == 1, \
'The node%s has %d child nodes, not one' % (xpath, len(node))
assert_node(node[0], cls[1:], xpath=xpath + "[0]", **kwargs)
elif isinstance(cls, tuple):
assert isinstance(node, (list, nodes.Element)), \
'The node%s does not have any items' % xpath
assert len(node) == len(cls), \
'The node%s has %d child nodes, not %r' % (xpath, len(node), len(cls))
for i, nodecls in enumerate(cls):
path = xpath + "[%d]" % i
assert_node(node[i], nodecls, xpath=path, **kwargs)
elif isinstance(cls, str):
assert node == cls, 'The node %r is not %r: %r' % (xpath, cls, node)
else:
assert isinstance(node, cls), \
'The node%s is not subclass of %r: %r' % (xpath, cls, node)
if kwargs:
assert isinstance(node, nodes.Element), \
'The node%s does not have any attributes' % xpath
for key, value in kwargs.items():
assert key in node, \
'The node%s does not have %r attribute: %r' % (xpath, key, node)
assert node[key] == value, \
'The node%s[%s] is not %r: %r' % (xpath, key, value, node[key])
def etree_parse(path: str) -> Any:
with warnings.catch_warnings(record=False):
warnings.filterwarnings("ignore", category=DeprecationWarning)
return ElementTree.parse(path)
class Struct:
def __init__(self, **kwargs: Any) -> None:
self.__dict__.update(kwargs)
class SphinxTestApp(application.Sphinx):
"""
A subclass of :class:`Sphinx` that runs on the test root, with some
better default values for the initialization parameters.
"""
_status: StringIO = None
_warning: StringIO = None
def __init__(self, buildername: str = 'html', srcdir: path = None, builddir: path = None,
freshenv: bool = False, confoverrides: Dict = None, status: IO = None,
warning: IO = None, tags: List[str] = None, docutilsconf: str = None,
parallel: int = 0) -> None:
if docutilsconf is not None:
(srcdir / 'docutils.conf').write_text(docutilsconf)
if builddir is None:
builddir = srcdir / '_build'
confdir = srcdir
outdir = builddir.joinpath(buildername)
outdir.makedirs(exist_ok=True)
doctreedir = builddir.joinpath('doctrees')
doctreedir.makedirs(exist_ok=True)
if confoverrides is None:
confoverrides = {}
warningiserror = False
self._saved_path = sys.path[:]
self._saved_directives = directives._directives.copy() # type: ignore
self._saved_roles = roles._roles.copy() # type: ignore
self._saved_nodeclasses = {v for v in dir(nodes.GenericNodeVisitor)
if v.startswith('visit_')}
try:
super().__init__(srcdir, confdir, outdir, doctreedir,
buildername, confoverrides, status, warning,
freshenv, warningiserror, tags, parallel=parallel)
except Exception:
self.cleanup()
raise
def cleanup(self, doctrees: bool = False) -> None:
ModuleAnalyzer.cache.clear()
locale.translators.clear()
sys.path[:] = self._saved_path
sys.modules.pop('autodoc_fodder', None)
directives._directives = self._saved_directives # type: ignore
roles._roles = self._saved_roles # type: ignore
for method in dir(nodes.GenericNodeVisitor):
if method.startswith('visit_') and \
method not in self._saved_nodeclasses:
delattr(nodes.GenericNodeVisitor, 'visit_' + method[6:])
delattr(nodes.GenericNodeVisitor, 'depart_' + method[6:])
def __repr__(self) -> str:
return '<%s buildername=%r>' % (self.__class__.__name__, self.builder.name)
class SphinxTestAppWrapperForSkipBuilding:
"""
This class is a wrapper for SphinxTestApp to speed up the test by skipping
`app.build` process if it is already built and there is even one output
file.
"""
def __init__(self, app_: SphinxTestApp) -> None:
self.app = app_
def __getattr__(self, name: str) -> Any:
return getattr(self.app, name)
def build(self, *args: Any, **kwargs: Any) -> None:
if not self.app.outdir.listdir(): # type: ignore
# if listdir is empty, do build.
self.app.build(*args, **kwargs)
# otherwise, we can use built cache
_unicode_literals_re = re.compile(r'u(".*?")|u(\'.*?\')')
def find_files(root: str, suffix: bool = None) -> Generator[str, None, None]:
for dirpath, _dirs, files in os.walk(root, followlinks=True):
dirpath = path(dirpath)
for f in [f for f in files if not suffix or f.endswith(suffix)]: # type: ignore
fpath = dirpath / f
yield relpath(fpath, root)
def strip_escseq(text: str) -> str:
return re.sub('\x1b.*?m', '', text)
def simple_decorator(f):
"""
A simple decorator that does nothing, for tests to use.
"""
@functools.wraps(f)
def wrapper(*args, **kwargs):
return f(*args, **kwargs)
return wrapper
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