Merge branch '3.x'

1 files changed, 1782 insertions, 2 deletions

diff --git a/tests/test_ext_autodoc.py b/tests/test_ext_autodoc.py
index 69846d3ae..4ed4a9b05 100644
--- a/tests/test_ext_autodoc.py
+++ b/tests/test_ext_autodoc.py
@@ -2,15 +2,1795 @@
     test_autodoc
     ~~~~~~~~~~~~
 
-    Test the autodoc extension.
+    Test the autodoc extension.  This tests mainly the Documenters; the auto
+    directives are tested in a test source file translated by test_build.
 
     :copyright: Copyright 2007-2020 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
 
+import sys
+from unittest.mock import Mock
+from warnings import catch_warnings
+
 import pytest
+from docutils.statemachine import ViewList
 
 from sphinx import addnodes
+from sphinx.ext.autodoc import ModuleLevelDocumenter, ALL, Options
+from sphinx.ext.autodoc.directive import DocumenterBridge, process_documenter_options
+from sphinx.testing.util import SphinxTestApp, Struct  # NOQA
+from sphinx.util.docutils import LoggingReporter
+
+try:
+    # Enable pyximport to test cython module
+    import pyximport
+    pyximport.install()
+except ImportError:
+    pyximport = None
+
+
+def do_autodoc(app, objtype, name, options=None):
+    if options is None:
+        options = {}
+    app.env.temp_data.setdefault('docname', 'index')  # set dummy docname
+    doccls = app.registry.documenters[objtype]
+    docoptions = process_documenter_options(doccls, app.config, options)
+    state = Mock()
+    state.document.settings.tab_width = 8
+    bridge = DocumenterBridge(app.env, LoggingReporter(''), docoptions, 1, state)
+    documenter = doccls(bridge, name)
+    documenter.generate()
+
+    return bridge.result
+
+
+def make_directive_bridge(env):
+    options = Options(
+        inherited_members = False,
+        undoc_members = False,
+        private_members = False,
+        special_members = False,
+        imported_members = False,
+        show_inheritance = False,
+        noindex = False,
+        annotation = None,
+        synopsis = '',
+        platform = '',
+        deprecated = False,
+        members = [],
+        member_order = 'alphabetical',
+        exclude_members = set(),
+        ignore_module_all = False,
+    )
+
+    directive = Struct(
+        env = env,
+        genopt = options,
+        result = ViewList(),
+        filename_set = set(),
+        state = Mock(),
+    )
+    directive.state.document.settings.tab_width = 8
+
+    return directive
+
+
+processed_signatures = []
+
+
+def process_signature(app, what, name, obj, options, args, retann):
+    processed_signatures.append((what, name))
+    if name == 'bar':
+        return '42', None
+
+
+def skip_member(app, what, name, obj, skip, options):
+    if name in ('__special1__', '__special2__'):
+        return skip
+    if name.startswith('__'):
+        return True
+    if name == 'skipmeth':
+        return True
+
+
+def test_parse_name(app):
+    def verify(objtype, name, result):
+        inst = app.registry.documenters[objtype](directive, name)
+        assert inst.parse_name()
+        assert (inst.modname, inst.objpath, inst.args, inst.retann) == result
+
+    directive = make_directive_bridge(app.env)
+
+    # for modules
+    verify('module', 'test_ext_autodoc', ('test_ext_autodoc', [], None, None))
+    verify('module', 'test.test_ext_autodoc', ('test.test_ext_autodoc', [], None, None))
+    verify('module', 'test(arg)', ('test', [], 'arg', None))
+    assert 'signature arguments' in app._warning.getvalue()
+
+    # for functions/classes
+    verify('function', 'test_ext_autodoc.raises',
+           ('test_ext_autodoc', ['raises'], None, None))
+    verify('function', 'test_ext_autodoc.raises(exc) -> None',
+           ('test_ext_autodoc', ['raises'], 'exc', 'None'))
+    directive.env.temp_data['autodoc:module'] = 'test_ext_autodoc'
+    verify('function', 'raises', ('test_ext_autodoc', ['raises'], None, None))
+    del directive.env.temp_data['autodoc:module']
+    directive.env.ref_context['py:module'] = 'test_ext_autodoc'
+    verify('function', 'raises', ('test_ext_autodoc', ['raises'], None, None))
+    verify('class', 'Base', ('test_ext_autodoc', ['Base'], None, None))
+
+    # for members
+    directive.env.ref_context['py:module'] = 'foo'
+    verify('method', 'util.SphinxTestApp.cleanup',
+           ('foo', ['util', 'SphinxTestApp', 'cleanup'], None, None))
+    directive.env.ref_context['py:module'] = 'util'
+    directive.env.ref_context['py:class'] = 'Foo'
+    directive.env.temp_data['autodoc:class'] = 'SphinxTestApp'
+    verify('method', 'cleanup', ('util', ['SphinxTestApp', 'cleanup'], None, None))
+    verify('method', 'SphinxTestApp.cleanup',
+           ('util', ['SphinxTestApp', 'cleanup'], None, None))
+
+
+def test_format_signature(app):
+    app.connect('autodoc-process-signature', process_signature)
+    app.connect('autodoc-skip-member', skip_member)
+
+    directive = make_directive_bridge(app.env)
+
+    def formatsig(objtype, name, obj, args, retann):
+        inst = app.registry.documenters[objtype](directive, name)
+        inst.fullname = name
+        inst.doc_as_attr = False  # for class objtype
+        inst.parent = object  # dummy
+        inst.object = obj
+        inst.objpath = [name]
+        inst.args = args
+        inst.retann = retann
+        res = inst.format_signature()
+        print(res)
+        return res
+
+    # no signatures for modules
+    assert formatsig('module', 'test', None, None, None) == ''
+
+    # test for functions
+    def f(a, b, c=1, **d):
+        pass
+
+    def g(a='\n'):
+        pass
+    assert formatsig('function', 'f', f, None, None) == '(a, b, c=1, **d)'
+    assert formatsig('function', 'f', f, 'a, b, c, d', None) == '(a, b, c, d)'
+    assert formatsig('function', 'f', f, None, 'None') == '(a, b, c=1, **d) -> None'
+    assert formatsig('function', 'g', g, None, None) == r"(a='\n')"
+
+    # test for classes
+    class D:
+        pass
+
+    class E:
+        pass
+    # no signature for classes without __init__
+    for C in (D, E):
+        assert formatsig('class', 'D', C, None, None) == ''
+
+    class F:
+        def __init__(self, a, b=None):
+            pass
+
+    class G(F):
+        pass
+    for C in (F, G):
+        assert formatsig('class', 'C', C, None, None) == '(a, b=None)'
+    assert formatsig('class', 'C', D, 'a, b', 'X') == '(a, b) -> X'
+
+    # __init__ have signature at first line of docstring
+    directive.env.config.autoclass_content = 'both'
+
+    class F2:
+        '''some docstring for F2.'''
+        def __init__(self, *args, **kw):
+            '''
+            __init__(a1, a2, kw1=True, kw2=False)
+
+            some docstring for __init__.
+            '''
+    class G2(F2):
+        pass
+
+    assert formatsig('class', 'F2', F2, None, None) == \
+        '(a1, a2, kw1=True, kw2=False)'
+    assert formatsig('class', 'G2', G2, None, None) == \
+        '(a1, a2, kw1=True, kw2=False)'
+
+    # test for methods
+    class H:
+        def foo1(self, b, *c):
+            pass
+
+        def foo2(b, *c):
+            pass
+
+        def foo3(self, d='\n'):
+            pass
+    assert formatsig('method', 'H.foo', H.foo1, None, None) == '(b, *c)'
+    assert formatsig('method', 'H.foo', H.foo1, 'a', None) == '(a)'
+    assert formatsig('method', 'H.foo', H.foo2, None, None) == '(*c)'
+    assert formatsig('method', 'H.foo', H.foo3, None, None) == r"(d='\n')"
+
+    # test bound methods interpreted as functions
+    assert formatsig('function', 'foo', H().foo1, None, None) == '(b, *c)'
+    assert formatsig('function', 'foo', H().foo2, None, None) == '(*c)'
+    assert formatsig('function', 'foo', H().foo3, None, None) == r"(d='\n')"
+
+    # test exception handling (exception is caught and args is '')
+    directive.env.config.autodoc_docstring_signature = False
+    assert formatsig('function', 'int', int, None, None) == ''
+
+    # test processing by event handler
+    assert formatsig('method', 'bar', H.foo1, None, None) == '42'
+
+    # test functions created via functools.partial
+    from functools import partial
+    curried1 = partial(lambda a, b, c: None, 'A')
+    assert formatsig('function', 'curried1', curried1, None, None) == \
+        '(b, c)'
+    curried2 = partial(lambda a, b, c=42: None, 'A')
+    assert formatsig('function', 'curried2', curried2, None, None) == \
+        '(b, c=42)'
+    curried3 = partial(lambda a, b, *c: None, 'A')
+    assert formatsig('function', 'curried3', curried3, None, None) == \
+        '(b, *c)'
+    curried4 = partial(lambda a, b, c=42, *d, **e: None, 'A')
+    assert formatsig('function', 'curried4', curried4, None, None) == \
+        '(b, c=42, *d, **e)'
+
+
+def test_get_doc(app):
+    directive = make_directive_bridge(app.env)
+
+    def getdocl(objtype, obj):
+        inst = app.registry.documenters[objtype](directive, 'tmp')
+        inst.parent = object  # dummy
+        inst.object = obj
+        inst.objpath = [obj.__name__]
+        inst.doc_as_attr = False
+        inst.format_signature()  # handle docstring signatures!
+        ds = inst.get_doc()
+        # for testing purposes, concat them and strip the empty line at the end
+        res = sum(ds, [])[:-1]
+        print(res)
+        return res
+
+    # objects without docstring
+    def f():
+        pass
+    assert getdocl('function', f) == []
+
+    # standard function, diverse docstring styles...
+    def f():
+        """Docstring"""
+    def g():
+        """
+        Docstring
+        """
+    for func in (f, g):
+        assert getdocl('function', func) == ['Docstring']
+
+    # first line vs. other lines indentation
+    def f():
+        """First line
+
+        Other
+          lines
+        """
+    assert getdocl('function', f) == ['First line', '', 'Other', '  lines']
+
+    # charset guessing (this module is encoded in utf-8)
+    def f():
+        """Döcstring"""
+    assert getdocl('function', f) == ['Döcstring']
+
+    # already-unicode docstrings must be taken literally
+    def f():
+        """Döcstring"""
+    assert getdocl('function', f) == ['Döcstring']
+
+    # verify that method docstrings get extracted in both normal case
+    # and in case of bound method posing as a function
+    class J:  # NOQA
+        def foo(self):
+            """Method docstring"""
+    assert getdocl('method', J.foo) == ['Method docstring']
+    assert getdocl('function', J().foo) == ['Method docstring']
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_new_documenter(app):
+    class MyDocumenter(ModuleLevelDocumenter):
+        objtype = 'integer'
+        directivetype = 'integer'
+        priority = 100
+
+        @classmethod
+        def can_document_member(cls, member, membername, isattr, parent):
+            return isinstance(member, int)
+
+        def document_members(self, all_members=False):
+            return
+
+    app.add_autodocumenter(MyDocumenter)
+
+    options = {"members": 'integer'}
+    actual = do_autodoc(app, 'module', 'target', options)
+    assert list(actual) == [
+        '',
+        '.. py:module:: target',
+        '',
+        '',
+        '.. py:integer:: integer',
+        '   :module: target',
+        '',
+        '   documentation for the integer',
+        '',
+    ]
+
+
+def test_attrgetter_using(app):
+    from target import Class
+    from target.inheritance import Derived
+
+    directive = make_directive_bridge(app.env)
+
+    def assert_getter_works(objtype, name, obj, attrs=[], **kw):
+        getattr_spy = []
+
+        def special_getattr(obj, name, *defargs):
+            if name in attrs:
+                getattr_spy.append((obj, name))
+                return None
+            return getattr(obj, name, *defargs)
+        app.add_autodoc_attrgetter(type, special_getattr)
+
+        del getattr_spy[:]
+        inst = app.registry.documenters[objtype](directive, name)
+        inst.generate(**kw)
+
+        hooked_members = [s[1] for s in getattr_spy]
+        documented_members = [s[1] for s in processed_signatures]
+        for attr in attrs:
+            fullname = '.'.join((name, attr))
+            assert attr in hooked_members
+            assert fullname not in documented_members, \
+                '%r was not hooked by special_attrgetter function' % fullname
+
+    with catch_warnings(record=True):
+        directive.genopt['members'] = ALL
+        directive.genopt['inherited_members'] = False
+        print(directive.genopt)
+        assert_getter_works('class', 'target.Class', Class, ['meth'])
+
+        directive.genopt['inherited_members'] = True
+        assert_getter_works('class', 'target.inheritance.Derived', Derived, ['inheritedmeth'])
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_py_module(app, warning):
+    # without py:module
+    actual = do_autodoc(app, 'method', 'Class.meth')
+    assert list(actual) == []
+    assert ("don't know which module to import for autodocumenting 'Class.meth'"
+            in warning.getvalue())
+
+    # with py:module
+    app.env.ref_context['py:module'] = 'target'
+    warning.truncate(0)
+
+    actual = do_autodoc(app, 'method', 'Class.meth')
+    assert list(actual) == [
+        '',
+        '.. py:method:: Class.meth()',
+        '   :module: target',
+        '',
+        '   Function.',
+        '',
+    ]
+    assert ("don't know which module to import for autodocumenting 'Class.meth'"
+            not in warning.getvalue())
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_decorator(app):
+    actual = do_autodoc(app, 'decorator', 'target.decorator.deco1')
+    assert list(actual) == [
+        '',
+        '.. py:decorator:: deco1',
+        '   :module: target.decorator',
+        '',
+        '   docstring for deco1',
+        '',
+    ]
+
+    actual = do_autodoc(app, 'decorator', 'target.decorator.deco2')
+    assert list(actual) == [
+        '',
+        '.. py:decorator:: deco2(condition, message)',
+        '   :module: target.decorator',
+        '',
+        '   docstring for deco2',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_exception(app):
+    actual = do_autodoc(app, 'exception', 'target.CustomEx')
+    assert list(actual) == [
+        '',
+        '.. py:exception:: CustomEx',
+        '   :module: target',
+        '',
+        '   My custom exception.',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_warnings(app, warning):
+    app.env.temp_data['docname'] = 'dummy'
+
+    # can't import module
+    do_autodoc(app, 'module', 'unknown')
+    assert "failed to import module 'unknown'" in warning.getvalue()
+
+    # missing function
+    do_autodoc(app, 'function', 'unknown')
+    assert "import for autodocumenting 'unknown'" in warning.getvalue()
+
+    do_autodoc(app, 'function', 'target.unknown')
+    assert "failed to import function 'unknown' from module 'target'" in warning.getvalue()
+
+    # missing method
+    do_autodoc(app, 'method', 'target.Class.unknown')
+    assert "failed to import method 'Class.unknown' from module 'target'" in warning.getvalue()
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_attributes(app):
+    options = {"synopsis": 'Synopsis',
+               "platform": "Platform",
+               "deprecated": None}
+    actual = do_autodoc(app, 'module', 'target', options)
+    assert list(actual) == [
+        '',
+        '.. py:module:: target',
+        '   :synopsis: Synopsis',
+        '   :platform: Platform',
+        '   :deprecated:',
+        ''
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_members(app):
+    # default (no-members)
+    actual = do_autodoc(app, 'class', 'target.inheritance.Base')
+    assert list(filter(lambda l: '::' in l, actual)) == [
+        '.. py:class:: Base',
+    ]
+
+    # default ALL-members
+    options = {"members": None}
+    actual = do_autodoc(app, 'class', 'target.inheritance.Base', options)
+    assert list(filter(lambda l: '::' in l, actual)) == [
+        '.. py:class:: Base',
+        '   .. py:method:: Base.inheritedclassmeth()',
+        '   .. py:method:: Base.inheritedmeth()',
+        '   .. py:method:: Base.inheritedstaticmeth(cls)'
+    ]
+
+    # default specific-members
+    options = {"members": "inheritedmeth,inheritedstaticmeth"}
+    actual = do_autodoc(app, 'class', 'target.inheritance.Base', options)
+    assert list(filter(lambda l: '::' in l, actual)) == [
+        '.. py:class:: Base',
+        '   .. py:method:: Base.inheritedmeth()',
+        '   .. py:method:: Base.inheritedstaticmeth(cls)'
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_exclude_members(app):
+    options = {"members": None,
+               "exclude-members": "inheritedmeth,inheritedstaticmeth"}
+    actual = do_autodoc(app, 'class', 'target.inheritance.Base', options)
+    assert list(filter(lambda l: '::' in l, actual)) == [
+        '.. py:class:: Base',
+        '   .. py:method:: Base.inheritedclassmeth()'
+    ]
+
+    # members vs exclude-members
+    options = {"members": "inheritedmeth",
+               "exclude-members": "inheritedmeth"}
+    actual = do_autodoc(app, 'class', 'target.inheritance.Base', options)
+    assert list(filter(lambda l: '::' in l, actual)) == [
+        '.. py:class:: Base',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_undoc_members(app):
+    options = {"members": None,
+               "undoc-members": None}
+    actual = do_autodoc(app, 'class', 'target.Class', options)
+    assert list(filter(lambda l: '::' in l, actual)) == [
+        '.. py:class:: Class(arg)',
+        '   .. py:attribute:: Class.attr',
+        '   .. py:attribute:: Class.docattr',
+        '   .. py:method:: Class.excludemeth()',
+        '   .. py:attribute:: Class.inst_attr_comment',
+        '   .. py:attribute:: Class.inst_attr_inline',
+        '   .. py:attribute:: Class.inst_attr_string',
+        '   .. py:attribute:: Class.mdocattr',
+        '   .. py:method:: Class.meth()',
+        '   .. py:method:: Class.moore(a, e, f) -> happiness',
+        '   .. py:method:: Class.roger(a, *, b=2, c=3, d=4, e=5, f=6)',
+        '   .. py:attribute:: Class.skipattr',
+        '   .. py:method:: Class.skipmeth()',
+        '   .. py:attribute:: Class.udocattr',
+        '   .. py:method:: Class.undocmeth()'
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_inherited_members(app):
+    options = {"members": None,
+               "inherited-members": None}
+    actual = do_autodoc(app, 'class', 'target.inheritance.Derived', options)
+    assert list(filter(lambda l: 'method::' in l, actual)) == [
+        '   .. py:method:: Derived.inheritedclassmeth()',
+        '   .. py:method:: Derived.inheritedmeth()',
+        '   .. py:method:: Derived.inheritedstaticmeth(cls)',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_inherited_members_Base(app):
+    options = {"members": None,
+               "inherited-members": "Base",
+               "special-members": None}
+
+    # check methods for object class are shown
+    actual = do_autodoc(app, 'class', 'target.inheritance.Derived', options)
+    assert '   .. py:method:: Derived.inheritedmeth()' in actual
+    assert '   .. py:method:: Derived.inheritedclassmeth' not in actual
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_inherited_members_None(app):
+    options = {"members": None,
+               "inherited-members": "None",
+               "special-members": None}
+
+    # check methods for object class are shown
+    actual = do_autodoc(app, 'class', 'target.inheritance.Derived', options)
+    assert '   .. py:method:: Derived.__init__()' in actual
+    assert '   .. py:method:: Derived.__str__()' in actual
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_imported_members(app):
+    options = {"members": None,
+               "imported-members": None,
+               "ignore-module-all": None}
+    actual = do_autodoc(app, 'module', 'target', options)
+    assert '.. py:function:: save_traceback(app: Sphinx) -> str' in actual
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_special_members(app):
+    # specific special methods
+    options = {"undoc-members": None,
+               "special-members": "__init__,__special1__"}
+    actual = do_autodoc(app, 'class', 'target.Class', options)
+    assert list(filter(lambda l: '::' in l, actual)) == [
+        '.. py:class:: Class(arg)',
+        '   .. py:method:: Class.__init__(arg)',
+        '   .. py:method:: Class.__special1__()',
+    ]
+
+    # combination with specific members
+    options = {"members": "attr,docattr",
+               "undoc-members": None,
+               "special-members": "__init__,__special1__"}
+    actual = do_autodoc(app, 'class', 'target.Class', options)
+    assert list(filter(lambda l: '::' in l, actual)) == [
+        '.. py:class:: Class(arg)',
+        '   .. py:method:: Class.__init__(arg)',
+        '   .. py:method:: Class.__special1__()',
+        '   .. py:attribute:: Class.attr',
+        '   .. py:attribute:: Class.docattr',
+    ]
+
+    # all special methods
+    options = {"members": None,
+               "undoc-members": None,
+               "special-members": None}
+    actual = do_autodoc(app, 'class', 'target.Class', options)
+    assert list(filter(lambda l: '::' in l, actual)) == [
+        '.. py:class:: Class(arg)',
+        '   .. py:attribute:: Class.__dict__',
+        '   .. py:method:: Class.__init__(arg)',
+        '   .. py:attribute:: Class.__module__',
+        '   .. py:method:: Class.__special1__()',
+        '   .. py:method:: Class.__special2__()',
+        '   .. py:attribute:: Class.__weakref__',
+        '   .. py:attribute:: Class.attr',
+        '   .. py:attribute:: Class.docattr',
+        '   .. py:method:: Class.excludemeth()',
+        '   .. py:attribute:: Class.inst_attr_comment',
+        '   .. py:attribute:: Class.inst_attr_inline',
+        '   .. py:attribute:: Class.inst_attr_string',
+        '   .. py:attribute:: Class.mdocattr',
+        '   .. py:method:: Class.meth()',
+        '   .. py:method:: Class.moore(a, e, f) -> happiness',
+        '   .. py:method:: Class.roger(a, *, b=2, c=3, d=4, e=5, f=6)',
+        '   .. py:attribute:: Class.skipattr',
+        '   .. py:method:: Class.skipmeth()',
+        '   .. py:attribute:: Class.udocattr',
+        '   .. py:method:: Class.undocmeth()'
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_ignore_module_all(app):
+    # default (no-ignore-module-all)
+    options = {"members": None}
+    actual = do_autodoc(app, 'module', 'target', options)
+    assert list(filter(lambda l: 'class::' in l, actual)) == [
+        '.. py:class:: Class(arg)',
+    ]
+
+    # ignore-module-all
+    options = {"members": None,
+               "ignore-module-all": None}
+    actual = do_autodoc(app, 'module', 'target', options)
+    assert list(filter(lambda l: 'class::' in l, actual)) == [
+        '.. py:class:: Class(arg)',
+        '.. py:class:: CustomDict',
+        '.. py:class:: InnerChild',
+        '.. py:class:: InstAttCls()',
+        '.. py:class:: Outer',
+        '   .. py:class:: Outer.Inner',
+        '.. py:class:: StrRepr'
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_noindex(app):
+    options = {"noindex": True}
+    actual = do_autodoc(app, 'module', 'target', options)
+    assert list(actual) == [
+        '',
+        '.. py:module:: target',
+        '   :noindex:',
+        ''
+    ]
+
+    # TODO: :noindex: should be propagated to children of target item.
+
+    actual = do_autodoc(app, 'class', 'target.inheritance.Base', options)
+    assert list(actual) == [
+        '',
+        '.. py:class:: Base',
+        '   :noindex:',
+        '   :module: target.inheritance',
+        ''
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_subclass_of_builtin_class(app):
+    options = {"members": None}
+    actual = do_autodoc(app, 'class', 'target.CustomDict', options)
+    assert list(actual) == [
+        '',
+        '.. py:class:: CustomDict',
+        '   :module: target',
+        '',
+        '   Docstring.',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_inner_class(app):
+    options = {"members": None}
+    actual = do_autodoc(app, 'class', 'target.Outer', options)
+    assert list(actual) == [
+        '',
+        '.. py:class:: Outer',
+        '   :module: target',
+        '',
+        '   Foo',
+        '',
+        '',
+        '   .. py:class:: Outer.Inner',
+        '      :module: target',
+        '',
+        '      Foo',
+        '',
+        '',
+        '      .. py:method:: Outer.Inner.meth()',
+        '         :module: target',
+        '',
+        '         Foo',
+        '',
+        '',
+        '   .. py:attribute:: Outer.factory',
+        '      :module: target',
+        '',
+        '      alias of :class:`builtins.dict`'
+    ]
+
+    actual = do_autodoc(app, 'class', 'target.Outer.Inner', options)
+    assert list(actual) == [
+        '',
+        '.. py:class:: Outer.Inner',
+        '   :module: target',
+        '',
+        '   Foo',
+        '',
+        '',
+        '   .. py:method:: Outer.Inner.meth()',
+        '      :module: target',
+        '',
+        '      Foo',
+        '',
+    ]
+
+    options['show-inheritance'] = True
+    actual = do_autodoc(app, 'class', 'target.InnerChild', options)
+    assert list(actual) == [
+        '',
+        '.. py:class:: InnerChild',
+        '   :module: target', '',
+        '   Bases: :class:`target.Outer.Inner`',
+        '',
+        '   InnerChild docstring',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_classmethod(app):
+    actual = do_autodoc(app, 'method', 'target.inheritance.Base.inheritedclassmeth')
+    assert list(actual) == [
+        '',
+        '.. py:method:: Base.inheritedclassmeth()',
+        '   :module: target.inheritance',
+        '   :classmethod:',
+        '',
+        '   Inherited class method.',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_staticmethod(app):
+    actual = do_autodoc(app, 'method', 'target.inheritance.Base.inheritedstaticmeth')
+    assert list(actual) == [
+        '',
+        '.. py:method:: Base.inheritedstaticmeth(cls)',
+        '   :module: target.inheritance',
+        '   :staticmethod:',
+        '',
+        '   Inherited static method.',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_descriptor(app):
+    options = {"members": None,
+               "undoc-members": True}
+    actual = do_autodoc(app, 'class', 'target.descriptor.Class', options)
+    assert list(actual) == [
+        '',
+        '.. py:class:: Class',
+        '   :module: target.descriptor',
+        '',
+        '',
+        '   .. py:attribute:: Class.descr',
+        '      :module: target.descriptor',
+        '',
+        '      Descriptor instance docstring.',
+        '',
+        '',
+        '   .. py:method:: Class.prop',
+        '      :module: target.descriptor',
+        '      :property:',
+        '',
+        '      Property.',
+        ''
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_c_module(app):
+    actual = do_autodoc(app, 'function', 'time.asctime')
+    assert list(actual) == [
+        '',
+        '.. py:function:: asctime([tuple]) -> string',
+        '   :module: time',
+        '',
+        "   Convert a time tuple to a string, e.g. 'Sat Jun 06 16:26:11 1998'.",
+        '   When the time tuple is not present, current time as returned by localtime()',
+        '   is used.',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_member_order(app):
+    # case member-order='bysource'
+    options = {"members": None,
+               'member-order': 'bysource',
+               "undoc-members": True,
+               'private-members': True}
+    actual = do_autodoc(app, 'class', 'target.Class', options)
+    assert list(filter(lambda l: '::' in l, actual)) == [
+        '.. py:class:: Class(arg)',
+        '   .. py:method:: Class.meth()',
+        '   .. py:method:: Class.undocmeth()',
+        '   .. py:method:: Class.skipmeth()',
+        '   .. py:method:: Class.excludemeth()',
+        '   .. py:attribute:: Class.skipattr',
+        '   .. py:attribute:: Class.attr',
+        '   .. py:attribute:: Class.docattr',
+        '   .. py:attribute:: Class.udocattr',
+        '   .. py:attribute:: Class.mdocattr',
+        '   .. py:method:: Class.roger(a, *, b=2, c=3, d=4, e=5, f=6)',
+        '   .. py:method:: Class.moore(a, e, f) -> happiness',
+        '   .. py:attribute:: Class.inst_attr_inline',
+        '   .. py:attribute:: Class.inst_attr_comment',
+        '   .. py:attribute:: Class.inst_attr_string',
+        '   .. py:attribute:: Class._private_inst_attr'
+    ]
+
+    # case member-order='groupwise'
+    options = {"members": None,
+               'member-order': 'groupwise',
+               "undoc-members": True,
+               'private-members': True}
+    actual = do_autodoc(app, 'class', 'target.Class', options)
+    assert list(filter(lambda l: '::' in l, actual)) == [
+        '.. py:class:: Class(arg)',
+        '   .. py:method:: Class.excludemeth()',
+        '   .. py:method:: Class.meth()',
+        '   .. py:method:: Class.moore(a, e, f) -> happiness',
+        '   .. py:method:: Class.roger(a, *, b=2, c=3, d=4, e=5, f=6)',
+        '   .. py:method:: Class.skipmeth()',
+        '   .. py:method:: Class.undocmeth()',
+        '   .. py:attribute:: Class._private_inst_attr',
+        '   .. py:attribute:: Class.attr',
+        '   .. py:attribute:: Class.docattr',
+        '   .. py:attribute:: Class.inst_attr_comment',
+        '   .. py:attribute:: Class.inst_attr_inline',
+        '   .. py:attribute:: Class.inst_attr_string',
+        '   .. py:attribute:: Class.mdocattr',
+        '   .. py:attribute:: Class.skipattr',
+        '   .. py:attribute:: Class.udocattr'
+    ]
+
+    # case member-order=None
+    options = {"members": None,
+               "undoc-members": True,
+               'private-members': True}
+    actual = do_autodoc(app, 'class', 'target.Class', options)
+    assert list(filter(lambda l: '::' in l, actual)) == [
+        '.. py:class:: Class(arg)',
+        '   .. py:attribute:: Class._private_inst_attr',
+        '   .. py:attribute:: Class.attr',
+        '   .. py:attribute:: Class.docattr',
+        '   .. py:method:: Class.excludemeth()',
+        '   .. py:attribute:: Class.inst_attr_comment',
+        '   .. py:attribute:: Class.inst_attr_inline',
+        '   .. py:attribute:: Class.inst_attr_string',
+        '   .. py:attribute:: Class.mdocattr',
+        '   .. py:method:: Class.meth()',
+        '   .. py:method:: Class.moore(a, e, f) -> happiness',
+        '   .. py:method:: Class.roger(a, *, b=2, c=3, d=4, e=5, f=6)',
+        '   .. py:attribute:: Class.skipattr',
+        '   .. py:method:: Class.skipmeth()',
+        '   .. py:attribute:: Class.udocattr',
+        '   .. py:method:: Class.undocmeth()'
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_module_scope(app):
+    app.env.temp_data['autodoc:module'] = 'target'
+    actual = do_autodoc(app, 'attribute', 'Class.mdocattr')
+    assert list(actual) == [
+        '',
+        '.. py:attribute:: Class.mdocattr',
+        '   :module: target',
+        '   :value: <_io.StringIO object>',
+        '',
+        '   should be documented as well - süß',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_class_scope(app):
+    app.env.temp_data['autodoc:module'] = 'target'
+    app.env.temp_data['autodoc:class'] = 'Class'
+    actual = do_autodoc(app, 'attribute', 'mdocattr')
+    assert list(actual) == [
+        '',
+        '.. py:attribute:: Class.mdocattr',
+        '   :module: target',
+        '   :value: <_io.StringIO object>',
+        '',
+        '   should be documented as well - süß',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_class_attributes(app):
+    options = {"members": None,
+               "undoc-members": True}
+    actual = do_autodoc(app, 'class', 'target.AttCls', options)
+    assert list(actual) == [
+        '',
+        '.. py:class:: AttCls',
+        '   :module: target',
+        '',
+        '',
+        '   .. py:attribute:: AttCls.a1',
+        '      :module: target',
+        '      :value: hello world',
+        '',
+        '',
+        '   .. py:attribute:: AttCls.a2',
+        '      :module: target',
+        '      :value: None',
+        ''
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_instance_attributes(app):
+    options = {"members": None}
+    actual = do_autodoc(app, 'class', 'target.InstAttCls', options)
+    assert list(actual) == [
+        '',
+        '.. py:class:: InstAttCls()',
+        '   :module: target',
+        '',
+        '   Class with documented class and instance attributes.',
+        '',
+        '',
+        '   .. py:attribute:: InstAttCls.ca1',
+        '      :module: target',
+        "      :value: 'a'",
+        '',
+        '      Doc comment for class attribute InstAttCls.ca1.',
+        '      It can have multiple lines.',
+        '',
+        '',
+        '   .. py:attribute:: InstAttCls.ca2',
+        '      :module: target',
+        "      :value: 'b'",
+        '',
+        '      Doc comment for InstAttCls.ca2. One line only.',
+        '',
+        '',
+        '   .. py:attribute:: InstAttCls.ca3',
+        '      :module: target',
+        "      :value: 'c'",
+        '',
+        '      Docstring for class attribute InstAttCls.ca3.',
+        '',
+        '',
+        '   .. py:attribute:: InstAttCls.ia1',
+        '      :module: target',
+        '',
+        '      Doc comment for instance attribute InstAttCls.ia1',
+        '',
+        '',
+        '   .. py:attribute:: InstAttCls.ia2',
+        '      :module: target',
+        '',
+        '      Docstring for instance attribute InstAttCls.ia2.',
+        ''
+    ]
+
+    # pick up arbitrary attributes
+    options = {"members": 'ca1,ia1'}
+    actual = do_autodoc(app, 'class', 'target.InstAttCls', options)
+    assert list(actual) == [
+        '',
+        '.. py:class:: InstAttCls()',
+        '   :module: target',
+        '',
+        '   Class with documented class and instance attributes.',
+        '',
+        '',
+        '   .. py:attribute:: InstAttCls.ca1',
+        '      :module: target',
+        "      :value: 'a'",
+        '',
+        '      Doc comment for class attribute InstAttCls.ca1.',
+        '      It can have multiple lines.',
+        '',
+        '',
+        '   .. py:attribute:: InstAttCls.ia1',
+        '      :module: target',
+        '',
+        '      Doc comment for instance attribute InstAttCls.ia1',
+        ''
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_slots(app):
+    options = {"members": None,
+               "undoc-members": True}
+    actual = do_autodoc(app, 'module', 'target.slots', options)
+    assert list(actual) == [
+        '',
+        '.. py:module:: target.slots',
+        '',
+        '',
+        '.. py:class:: Bar()',
+        '   :module: target.slots',
+        '',
+        '',
+        '   .. py:attribute:: Bar.attr1',
+        '      :module: target.slots',
+        '',
+        '      docstring of attr1',
+        '',
+        '',
+        '   .. py:attribute:: Bar.attr2',
+        '      :module: target.slots',
+        '',
+        '      docstring of instance attr2',
+        '',
+        '',
+        '   .. py:attribute:: Bar.attr3',
+        '      :module: target.slots',
+        '',
+        '',
+        '.. py:class:: Foo',
+        '   :module: target.slots',
+        '',
+        '',
+        '   .. py:attribute:: Foo.attr',
+        '      :module: target.slots',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_enum_class(app):
+    options = {"members": None}
+    actual = do_autodoc(app, 'class', 'target.enum.EnumCls', options)
+    assert list(actual) == [
+        '',
+        '.. py:class:: EnumCls',
+        '   :module: target.enum',
+        '',
+        '   this is enum class',
+        '',
+        '',
+        '   .. py:method:: EnumCls.say_goodbye()',
+        '      :module: target.enum',
+        '      :classmethod:',
+        '',
+        '      a classmethod says good-bye to you.',
+        '',
+        '',
+        '   .. py:method:: EnumCls.say_hello()',
+        '      :module: target.enum',
+        '',
+        '      a method says hello to you.',
+        '',
+        '',
+        '   .. py:attribute:: EnumCls.val1',
+        '      :module: target.enum',
+        '      :value: 12',
+        '',
+        '      doc for val1',
+        '',
+        '',
+        '   .. py:attribute:: EnumCls.val2',
+        '      :module: target.enum',
+        '      :value: 23',
+        '',
+        '      doc for val2',
+        '',
+        '',
+        '   .. py:attribute:: EnumCls.val3',
+        '      :module: target.enum',
+        '      :value: 34',
+        '',
+        '      doc for val3',
+        '',
+    ]
+
+    # checks for an attribute of EnumClass
+    actual = do_autodoc(app, 'attribute', 'target.enum.EnumCls.val1')
+    assert list(actual) == [
+        '',
+        '.. py:attribute:: EnumCls.val1',
+        '   :module: target.enum',
+        '   :value: 12',
+        '',
+        '   doc for val1',
+        ''
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_descriptor_class(app):
+    options = {"members": 'CustomDataDescriptor,CustomDataDescriptor2'}
+    actual = do_autodoc(app, 'module', 'target.descriptor', options)
+    assert list(actual) == [
+        '',
+        '.. py:module:: target.descriptor',
+        '',
+        '',
+        '.. py:class:: CustomDataDescriptor(doc)',
+        '   :module: target.descriptor',
+        '',
+        '   Descriptor class docstring.',
+        '',
+        '',
+        '   .. py:method:: CustomDataDescriptor.meth()',
+        '      :module: target.descriptor',
+        '',
+        '      Function.',
+        '',
+        '',
+        '.. py:class:: CustomDataDescriptor2(doc)',
+        '   :module: target.descriptor',
+        '',
+        '   Descriptor class with custom metaclass docstring.',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autofunction_for_classes(app):
+    actual = do_autodoc(app, 'function', 'target.classes.Foo')
+    assert list(actual) == [
+        '',
+        '.. py:function:: Foo()',
+        '   :module: target.classes',
+        '',
+    ]
+
+    actual = do_autodoc(app, 'function', 'target.classes.Bar')
+    assert list(actual) == [
+        '',
+        '.. py:function:: Bar(x, y)',
+        '   :module: target.classes',
+        '',
+    ]
+
+    actual = do_autodoc(app, 'function', 'target.classes.Baz')
+    assert list(actual) == [
+        '',
+        '.. py:function:: Baz(x, y)',
+        '   :module: target.classes',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autofunction_for_callable(app):
+    actual = do_autodoc(app, 'function', 'target.callable.function')
+    assert list(actual) == [
+        '',
+        '.. py:function:: function(arg1, arg2, **kwargs)',
+        '   :module: target.callable',
+        '',
+        '   A callable object that behaves like a function.',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autofunction_for_method(app):
+    actual = do_autodoc(app, 'function', 'target.callable.method')
+    assert list(actual) == [
+        '',
+        '.. py:function:: method(arg1, arg2)',
+        '   :module: target.callable',
+        '',
+        '   docstring of Callable.method().',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autofunction_for_builtin(app):
+    actual = do_autodoc(app, 'function', 'os.umask')
+    assert list(actual) == [
+        '',
+        '.. py:function:: umask(mask, /)',
+        '   :module: os',
+        '',
+        '   Set the current numeric umask and return the previous umask.',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autofunction_for_methoddescriptor(app):
+    actual = do_autodoc(app, 'function', 'builtins.int.__add__')
+    assert list(actual) == [
+        '',
+        '.. py:function:: int.__add__(self, value, /)',
+        '   :module: builtins',
+        '',
+        '   Return self+value.',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autofunction_for_decorated(app):
+    actual = do_autodoc(app, 'function', 'target.decorator.foo')
+    assert list(actual) == [
+        '',
+        '.. py:function:: foo()',
+        '   :module: target.decorator',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_automethod_for_builtin(app):
+    actual = do_autodoc(app, 'method', 'builtins.int.__add__')
+    assert list(actual) == [
+        '',
+        '.. py:method:: int.__add__(value, /)',
+        '   :module: builtins',
+        '',
+        '   Return self+value.',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_automethod_for_decorated(app):
+    actual = do_autodoc(app, 'method', 'target.decorator.Bar.meth')
+    assert list(actual) == [
+        '',
+        '.. py:method:: Bar.meth()',
+        '   :module: target.decorator',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_abstractmethods(app):
+    options = {"members": None,
+               "undoc-members": None}
+    actual = do_autodoc(app, 'module', 'target.abstractmethods', options)
+    assert list(actual) == [
+        '',
+        '.. py:module:: target.abstractmethods',
+        '',
+        '',
+        '.. py:class:: Base',
+        '   :module: target.abstractmethods',
+        '',
+        '',
+        '   .. py:method:: Base.abstractmeth()',
+        '      :module: target.abstractmethods',
+        '      :abstractmethod:',
+        '',
+        '',
+        '   .. py:method:: Base.classmeth()',
+        '      :module: target.abstractmethods',
+        '      :abstractmethod:',
+        '      :classmethod:',
+        '',
+        '',
+        '   .. py:method:: Base.coroutinemeth()',
+        '      :module: target.abstractmethods',
+        '      :abstractmethod:',
+        '      :async:',
+        '',
+        '',
+        '   .. py:method:: Base.meth()',
+        '      :module: target.abstractmethods',
+        '',
+        '',
+        '   .. py:method:: Base.prop',
+        '      :module: target.abstractmethods',
+        '      :abstractmethod:',
+        '      :property:',
+        '',
+        '',
+        '   .. py:method:: Base.staticmeth()',
+        '      :module: target.abstractmethods',
+        '      :abstractmethod:',
+        '      :staticmethod:',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_partialfunction(app):
+    options = {"members": None}
+    actual = do_autodoc(app, 'module', 'target.partialfunction', options)
+    assert list(actual) == [
+        '',
+        '.. py:module:: target.partialfunction',
+        '',
+        '',
+        '.. py:function:: func1(a, b, c)',
+        '   :module: target.partialfunction',
+        '',
+        '   docstring of func1',
+        '',
+        '',
+        '.. py:function:: func2(b, c)',
+        '   :module: target.partialfunction',
+        '',
+        '   docstring of func1',
+        '',
+        '',
+        '.. py:function:: func3(c)',
+        '   :module: target.partialfunction',
+        '',
+        '   docstring of func3',
+        '',
+        '',
+        '.. py:function:: func4()',
+        '   :module: target.partialfunction',
+        '',
+        '   docstring of func3',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_imported_partialfunction_should_not_shown_without_imported_members(app):
+    options = {"members": None}
+    actual = do_autodoc(app, 'module', 'target.imported_members', options)
+    assert list(actual) == [
+        '',
+        '.. py:module:: target.imported_members',
+        ''
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_bound_method(app):
+    options = {"members": None}
+    actual = do_autodoc(app, 'module', 'target.bound_method', options)
+    assert list(actual) == [
+        '',
+        '.. py:module:: target.bound_method',
+        '',
+        '',
+        '.. py:function:: bound_method()',
+        '   :module: target.bound_method',
+        '',
+        '   Method docstring',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_coroutine(app):
+    actual = do_autodoc(app, 'function', 'target.functions.coroutinefunc')
+    assert list(actual) == [
+        '',
+        '.. py:function:: coroutinefunc()',
+        '   :module: target.functions',
+        '   :async:',
+        '',
+    ]
+
+    options = {"members": None}
+    actual = do_autodoc(app, 'class', 'target.coroutine.AsyncClass', options)
+    assert list(actual) == [
+        '',
+        '.. py:class:: AsyncClass',
+        '   :module: target.coroutine',
+        '',
+        '',
+        '   .. py:method:: AsyncClass.do_coroutine()',
+        '      :module: target.coroutine',
+        '      :async:',
+        '',
+        '      A documented coroutine function',
+        '',
+        '',
+        '   .. py:method:: AsyncClass.do_coroutine2()',
+        '      :module: target.coroutine',
+        '      :async:',
+        '      :classmethod:',
+        '',
+        '      A documented coroutine classmethod',
+        '',
+        '',
+        '   .. py:method:: AsyncClass.do_coroutine3()',
+        '      :module: target.coroutine',
+        '      :async:',
+        '      :staticmethod:',
+        '',
+        '      A documented coroutine staticmethod',
+        '',
+    ]
+
+    # force-synchronized wrapper
+    actual = do_autodoc(app, 'function', 'target.coroutine.sync_func')
+    assert list(actual) == [
+        '',
+        '.. py:function:: sync_func(*args, **kwargs)',
+        '   :module: target.coroutine',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_partialmethod(app):
+    expected = [
+        '',
+        '.. py:class:: Cell',
+        '   :module: target.partialmethod',
+        '',
+        '   An example for partialmethod.',
+        '',
+        '   refs: https://docs.python.jp/3/library/functools.html#functools.partialmethod',
+        '',
+        '',
+        '   .. py:method:: Cell.set_alive()',
+        '      :module: target.partialmethod',
+        '',
+        '      Make a cell alive.',
+        '',
+        '',
+        '   .. py:method:: Cell.set_state(state)',
+        '      :module: target.partialmethod',
+        '',
+        '      Update state of cell to *state*.',
+        '',
+    ]
+
+    options = {"members": None}
+    actual = do_autodoc(app, 'class', 'target.partialmethod.Cell', options)
+    assert list(actual) == expected
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_wrappedfunction(app):
+    actual = do_autodoc(app, 'function', 'target.wrappedfunction.slow_function')
+    assert list(actual) == [
+        '',
+        '.. py:function:: slow_function(message, timeout)',
+        '   :module: target.wrappedfunction',
+        '',
+        '   This function is slow.',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_partialmethod_undoc_members(app):
+    expected = [
+        '',
+        '.. py:class:: Cell',
+        '   :module: target.partialmethod',
+        '',
+        '   An example for partialmethod.',
+        '',
+        '   refs: https://docs.python.jp/3/library/functools.html#functools.partialmethod',
+        '',
+        '',
+        '   .. py:method:: Cell.set_alive()',
+        '      :module: target.partialmethod',
+        '',
+        '      Make a cell alive.',
+        '',
+        '',
+        '   .. py:method:: Cell.set_dead()',
+        '      :module: target.partialmethod',
+        '',
+        '',
+        '   .. py:method:: Cell.set_state(state)',
+        '      :module: target.partialmethod',
+        '',
+        '      Update state of cell to *state*.',
+        '',
+    ]
+
+    options = {"members": None,
+               "undoc-members": None}
+    actual = do_autodoc(app, 'class', 'target.partialmethod.Cell', options)
+    assert list(actual) == expected
+
+
+@pytest.mark.skipif(sys.version_info < (3, 6), reason='py36+ is available since python3.6.')
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_typed_instance_variables(app):
+    options = {"members": None,
+               "undoc-members": True}
+    actual = do_autodoc(app, 'module', 'target.typed_vars', options)
+    assert list(actual) == [
+        '',
+        '.. py:module:: target.typed_vars',
+        '',
+        '',
+        '.. py:class:: Class()',
+        '   :module: target.typed_vars',
+        '',
+        '',
+        '   .. py:attribute:: Class.attr1',
+        '      :module: target.typed_vars',
+        '      :type: int',
+        '      :value: 0',
+        '',
+        '',
+        '   .. py:attribute:: Class.attr2',
+        '      :module: target.typed_vars',
+        '      :type: int',
+        '',
+        '',
+        '   .. py:attribute:: Class.attr3',
+        '      :module: target.typed_vars',
+        '      :type: int',
+        '      :value: 0',
+        '',
+        '',
+        '   .. py:attribute:: Class.attr4',
+        '      :module: target.typed_vars',
+        '      :type: int',
+        '',
+        '      attr4',
+        '',
+        '',
+        '   .. py:attribute:: Class.attr5',
+        '      :module: target.typed_vars',
+        '      :type: int',
+        '',
+        '      attr5',
+        '',
+        '',
+        '   .. py:attribute:: Class.attr6',
+        '      :module: target.typed_vars',
+        '      :type: int',
+        '',
+        '      attr6',
+        '',
+        '',
+        '   .. py:attribute:: Class.descr4',
+        '      :module: target.typed_vars',
+        '      :type: int',
+        '',
+        '      This is descr4',
+        '',
+        '',
+        '.. py:data:: attr1',
+        '   :module: target.typed_vars',
+        '   :type: str',
+        "   :value: ''",
+        '',
+        '   attr1',
+        '',
+        '',
+        '.. py:data:: attr2',
+        '   :module: target.typed_vars',
+        '   :type: str',
+        '',
+        '   attr2',
+        '',
+        '',
+        '.. py:data:: attr3',
+        '   :module: target.typed_vars',
+        '   :type: str',
+        "   :value: ''",
+        '',
+        '   attr3',
+        '',
+    ]
+
+
+@pytest.mark.skipif(sys.version_info < (3, 9), reason='py39+ is required.')
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_autodoc_Annotated(app):
+    options = {"members": None}
+    actual = do_autodoc(app, 'module', 'target.annotated', options)
+    assert list(actual) == [
+        '',
+        '.. py:module:: target.annotated',
+        '',
+        '',
+        '.. py:function:: hello(name: str) -> None',
+        '   :module: target.annotated',
+        '',
+        '   docstring',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='pycode-egg')
+def test_autodoc_for_egged_code(app):
+    options = {"members": None,
+               "undoc-members": None}
+    actual = do_autodoc(app, 'module', 'sample', options)
+    assert list(actual) == [
+        '',
+        '.. py:module:: sample',
+        '',
+        '',
+        '.. py:data:: CONSTANT',
+        '   :module: sample',
+        '   :value: 1',
+        '',
+        '   constant on sample.py',
+        '',
+        '',
+        '.. py:function:: hello(s)',
+        '   :module: sample',
+        ''
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_singledispatch(app):
+    options = {"members": None}
+    actual = do_autodoc(app, 'module', 'target.singledispatch', options)
+    assert list(actual) == [
+        '',
+        '.. py:module:: target.singledispatch',
+        '',
+        '',
+        '.. py:function:: func(arg, kwarg=None)',
+        '                 func(arg: int, kwarg=None)',
+        '                 func(arg: str, kwarg=None)',
+        '   :module: target.singledispatch',
+        '',
+        '   A function for general use.',
+        '',
+    ]
+
+
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_singledispatch_autofunction(app):
+    options = {}
+    actual = do_autodoc(app, 'function', 'target.singledispatch.func', options)
+    assert list(actual) == [
+        '',
+        '.. py:function:: func(arg, kwarg=None)',
+        '                 func(arg: int, kwarg=None)',
+        '                 func(arg: str, kwarg=None)',
+        '   :module: target.singledispatch',
+        '',
+        '   A function for general use.',
+        '',
+    ]
+
+
+@pytest.mark.skipif(sys.version_info < (3, 8),
+                    reason='singledispatchmethod is available since python3.8')
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_singledispatchmethod(app):
+    options = {"members": None}
+    actual = do_autodoc(app, 'module', 'target.singledispatchmethod', options)
+    assert list(actual) == [
+        '',
+        '.. py:module:: target.singledispatchmethod',
+        '',
+        '',
+        '.. py:class:: Foo',
+        '   :module: target.singledispatchmethod',
+        '',
+        '   docstring',
+        '',
+        '',
+        '   .. py:method:: Foo.meth(arg, kwarg=None)',
+        '                  Foo.meth(arg: int, kwarg=None)',
+        '                  Foo.meth(arg: str, kwarg=None)',
+        '      :module: target.singledispatchmethod',
+        '',
+        '      A method for general use.',
+        '',
+    ]
+
+
+@pytest.mark.skipif(sys.version_info < (3, 8),
+                    reason='singledispatchmethod is available since python3.8')
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_singledispatchmethod_automethod(app):
+    options = {}
+    actual = do_autodoc(app, 'method', 'target.singledispatchmethod.Foo.meth', options)
+    assert list(actual) == [
+        '',
+        '.. py:method:: Foo.meth(arg, kwarg=None)',
+        '               Foo.meth(arg: int, kwarg=None)',
+        '               Foo.meth(arg: str, kwarg=None)',
+        '   :module: target.singledispatchmethod',
+        '',
+        '   A method for general use.',
+        '',
+    ]
+
+
+@pytest.mark.skipif(pyximport is None, reason='cython is not installed')
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_cython(app):
+    options = {"members": None,
+               "undoc-members": None}
+    actual = do_autodoc(app, 'module', 'target.cython', options)
+    assert list(actual) == [
+        '',
+        '.. py:module:: target.cython',
+        '',
+        '',
+        '.. py:class:: Class',
+        '   :module: target.cython',
+        '',
+        '   Docstring.',
+        '',
+        '',
+        '   .. py:method:: Class.meth(name: str, age: int = 0) -> None',
+        '      :module: target.cython',
+        '',
+        '      Docstring.',
+        '',
+        '',
+        '.. py:function:: foo(x: int, *args, y: str, **kwargs)',
+        '   :module: target.cython',
+        '',
+        '   Docstring.',
+        '',
+    ]
+
+
+@pytest.mark.skipif(sys.version_info < (3, 8),
+                    reason='typing.final is available since python3.8')
+@pytest.mark.sphinx('html', testroot='ext-autodoc')
+def test_final(app):
+    options = {"members": None}
+    actual = do_autodoc(app, 'module', 'target.final', options)
+    assert list(actual) == [
+        '',
+        '.. py:module:: target.final',
+        '',
+        '',
+        '.. py:class:: Class',
+        '   :module: target.final',
+        '   :final:',
+        '',
+        '   docstring',
+        '',
+        '',
+        '   .. py:method:: Class.meth1()',
+        '      :module: target.final',
+        '      :final:',
+        '',
+        '      docstring',
+        '',
+        '',
+        '   .. py:method:: Class.meth2()',
+        '      :module: target.final',
+        '',
+        '      docstring',
+        '',
+    ]
 
 
 @pytest.mark.sphinx('dummy', testroot='ext-autodoc')
@@ -19,7 +1799,7 @@ def test_autodoc(app, status, warning):
 
     content = app.env.get_doctree('index')
     assert isinstance(content[3], addnodes.desc)
-    assert content[3][0].astext() == 'autodoc_dummy_module.test'
+    assert content[3][0].astext() == 'autodoc_dummy_module.test()'
     assert content[3][1].astext() == 'Dummy function using dummy.*'
 
     # issue sphinx-doc/sphinx#2437