mirror of
https://github.com/python/cpython.git
synced 2025-11-03 23:21:29 +00:00
db98e0bb12
(cherry picked from commit 2602d8ae98)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
291 lines
11 KiB
Python
291 lines
11 KiB
Python
'''
|
|
Test cases for pyclbr.py
|
|
Nick Mathewson
|
|
'''
|
|
|
|
import importlib.machinery
|
|
import sys
|
|
from contextlib import contextmanager
|
|
from textwrap import dedent
|
|
from types import FunctionType, MethodType, BuiltinFunctionType
|
|
import pyclbr
|
|
from unittest import TestCase, main as unittest_main
|
|
from test.test_importlib import util as test_importlib_util
|
|
import warnings
|
|
|
|
|
|
StaticMethodType = type(staticmethod(lambda: None))
|
|
ClassMethodType = type(classmethod(lambda c: None))
|
|
|
|
# Here we test the python class browser code.
|
|
#
|
|
# The main function in this suite, 'testModule', compares the output
|
|
# of pyclbr with the introspected members of a module. Because pyclbr
|
|
# is imperfect (as designed), testModule is called with a set of
|
|
# members to ignore.
|
|
|
|
|
|
@contextmanager
|
|
def temporary_main_spec():
|
|
"""
|
|
A context manager that temporarily sets the `__spec__` attribute
|
|
of the `__main__` module if it's missing.
|
|
"""
|
|
main_mod = sys.modules.get("__main__")
|
|
if main_mod is None:
|
|
yield # Do nothing if __main__ is not present
|
|
return
|
|
|
|
original_spec = getattr(main_mod, "__spec__", None)
|
|
if original_spec is None:
|
|
main_mod.__spec__ = importlib.machinery.ModuleSpec(
|
|
name="__main__", loader=None, origin="built-in"
|
|
)
|
|
try:
|
|
yield
|
|
finally:
|
|
main_mod.__spec__ = original_spec
|
|
|
|
|
|
class PyclbrTest(TestCase):
|
|
|
|
def assertListEq(self, l1, l2, ignore):
|
|
''' succeed iff {l1} - {ignore} == {l2} - {ignore} '''
|
|
missing = (set(l1) ^ set(l2)) - set(ignore)
|
|
if missing:
|
|
print("l1=%r\nl2=%r\nignore=%r" % (l1, l2, ignore), file=sys.stderr)
|
|
self.fail("%r missing" % missing.pop())
|
|
|
|
def assertHaskey(self, obj, key, ignore):
|
|
''' succeed iff key in obj or key in ignore. '''
|
|
if key in ignore: return
|
|
if key not in obj:
|
|
print("***",key, file=sys.stderr)
|
|
self.assertIn(key, obj)
|
|
|
|
def assertEqualsOrIgnored(self, a, b, ignore):
|
|
''' succeed iff a == b or a in ignore or b in ignore '''
|
|
if a not in ignore and b not in ignore:
|
|
self.assertEqual(a, b)
|
|
|
|
def checkModule(self, moduleName, module=None, ignore=()):
|
|
''' succeed iff pyclbr.readmodule_ex(modulename) corresponds
|
|
to the actual module object, module. Any identifiers in
|
|
ignore are ignored. If no module is provided, the appropriate
|
|
module is loaded with __import__.'''
|
|
|
|
ignore = set(ignore) | set(['object'])
|
|
|
|
if module is None:
|
|
# Import it.
|
|
# ('<silly>' is to work around an API silliness in __import__)
|
|
module = __import__(moduleName, globals(), {}, ['<silly>'])
|
|
|
|
dict = pyclbr.readmodule_ex(moduleName)
|
|
|
|
def ismethod(oclass, obj, name):
|
|
classdict = oclass.__dict__
|
|
if isinstance(obj, MethodType):
|
|
# could be a classmethod
|
|
if (not isinstance(classdict[name], ClassMethodType) or
|
|
obj.__self__ is not oclass):
|
|
return False
|
|
elif not isinstance(obj, FunctionType):
|
|
return False
|
|
|
|
objname = obj.__name__
|
|
if objname.startswith("__") and not objname.endswith("__"):
|
|
if stripped_typename := oclass.__name__.lstrip('_'):
|
|
objname = f"_{stripped_typename}{objname}"
|
|
return objname == name
|
|
|
|
# Make sure the toplevel functions and classes are the same.
|
|
for name, value in dict.items():
|
|
if name in ignore:
|
|
continue
|
|
self.assertHasAttr(module, name)
|
|
py_item = getattr(module, name)
|
|
if isinstance(value, pyclbr.Function):
|
|
self.assertIsInstance(py_item, (FunctionType, BuiltinFunctionType))
|
|
if py_item.__module__ != moduleName:
|
|
continue # skip functions that came from somewhere else
|
|
self.assertEqual(py_item.__module__, value.module)
|
|
else:
|
|
self.assertIsInstance(py_item, type)
|
|
if py_item.__module__ != moduleName:
|
|
continue # skip classes that came from somewhere else
|
|
|
|
real_bases = [base.__name__ for base in py_item.__bases__]
|
|
pyclbr_bases = [ getattr(base, 'name', base)
|
|
for base in value.super ]
|
|
|
|
try:
|
|
self.assertListEq(real_bases, pyclbr_bases, ignore)
|
|
except:
|
|
print("class=%s" % py_item, file=sys.stderr)
|
|
raise
|
|
|
|
actualMethods = []
|
|
for m in py_item.__dict__.keys():
|
|
if m == "__annotate__":
|
|
continue
|
|
if ismethod(py_item, getattr(py_item, m), m):
|
|
actualMethods.append(m)
|
|
|
|
if stripped_typename := name.lstrip('_'):
|
|
foundMethods = []
|
|
for m in value.methods.keys():
|
|
if m.startswith('__') and not m.endswith('__'):
|
|
foundMethods.append(f"_{stripped_typename}{m}")
|
|
else:
|
|
foundMethods.append(m)
|
|
else:
|
|
foundMethods = list(value.methods.keys())
|
|
|
|
try:
|
|
self.assertListEq(foundMethods, actualMethods, ignore)
|
|
self.assertEqual(py_item.__module__, value.module)
|
|
|
|
self.assertEqualsOrIgnored(py_item.__name__, value.name,
|
|
ignore)
|
|
# can't check file or lineno
|
|
except:
|
|
print("class=%s" % py_item, file=sys.stderr)
|
|
raise
|
|
|
|
# Now check for missing stuff.
|
|
def defined_in(item, module):
|
|
if isinstance(item, type):
|
|
return item.__module__ == module.__name__
|
|
if isinstance(item, FunctionType):
|
|
return item.__globals__ is module.__dict__
|
|
return False
|
|
for name in dir(module):
|
|
item = getattr(module, name)
|
|
if isinstance(item, (type, FunctionType)):
|
|
if defined_in(item, module):
|
|
self.assertHaskey(dict, name, ignore)
|
|
|
|
def test_easy(self):
|
|
self.checkModule('pyclbr')
|
|
# XXX: Metaclasses are not supported
|
|
# self.checkModule('ast')
|
|
with temporary_main_spec():
|
|
self.checkModule('doctest', ignore=("TestResults", "_SpoofOut",
|
|
"DocTestCase", '_DocTestSuite'))
|
|
self.checkModule('difflib', ignore=("Match",))
|
|
|
|
def test_cases(self):
|
|
# see test.pyclbr_input for the rationale behind the ignored symbols
|
|
self.checkModule('test.pyclbr_input', ignore=['om', 'f'])
|
|
|
|
def test_nested(self):
|
|
mb = pyclbr
|
|
# Set arguments for descriptor creation and _creat_tree call.
|
|
m, p, f, t, i = 'test', '', 'test.py', {}, None
|
|
source = dedent("""\
|
|
def f0():
|
|
def f1(a,b,c):
|
|
def f2(a=1, b=2, c=3): pass
|
|
return f1(a,b,d)
|
|
class c1: pass
|
|
class C0:
|
|
"Test class."
|
|
def F1():
|
|
"Method."
|
|
return 'return'
|
|
class C1():
|
|
class C2:
|
|
"Class nested within nested class."
|
|
def F3(): return 1+1
|
|
|
|
""")
|
|
actual = mb._create_tree(m, p, f, source, t, i)
|
|
|
|
# Create descriptors, linked together, and expected dict.
|
|
f0 = mb.Function(m, 'f0', f, 1, end_lineno=5)
|
|
f1 = mb._nest_function(f0, 'f1', 2, 4)
|
|
f2 = mb._nest_function(f1, 'f2', 3, 3)
|
|
c1 = mb._nest_class(f0, 'c1', 5, 5)
|
|
C0 = mb.Class(m, 'C0', None, f, 6, end_lineno=14)
|
|
F1 = mb._nest_function(C0, 'F1', 8, 10)
|
|
C1 = mb._nest_class(C0, 'C1', 11, 14)
|
|
C2 = mb._nest_class(C1, 'C2', 12, 14)
|
|
F3 = mb._nest_function(C2, 'F3', 14, 14)
|
|
expected = {'f0':f0, 'C0':C0}
|
|
|
|
def compare(parent1, children1, parent2, children2):
|
|
"""Return equality of tree pairs.
|
|
|
|
Each parent,children pair define a tree. The parents are
|
|
assumed equal. Comparing the children dictionaries as such
|
|
does not work due to comparison by identity and double
|
|
linkage. We separate comparing string and number attributes
|
|
from comparing the children of input children.
|
|
"""
|
|
self.assertEqual(children1.keys(), children2.keys())
|
|
for ob in children1.values():
|
|
self.assertIs(ob.parent, parent1)
|
|
for ob in children2.values():
|
|
self.assertIs(ob.parent, parent2)
|
|
for key in children1.keys():
|
|
o1, o2 = children1[key], children2[key]
|
|
t1 = type(o1), o1.name, o1.file, o1.module, o1.lineno, o1.end_lineno
|
|
t2 = type(o2), o2.name, o2.file, o2.module, o2.lineno, o2.end_lineno
|
|
self.assertEqual(t1, t2)
|
|
if type(o1) is mb.Class:
|
|
self.assertEqual(o1.methods, o2.methods)
|
|
# Skip superclasses for now as not part of example
|
|
compare(o1, o1.children, o2, o2.children)
|
|
|
|
compare(None, actual, None, expected)
|
|
|
|
def test_others(self):
|
|
cm = self.checkModule
|
|
|
|
# These were once some of the longest modules.
|
|
cm('random', ignore=('Random',)) # from _random import Random as CoreGenerator
|
|
cm('pickle', ignore=('partial', 'PickleBuffer'))
|
|
with warnings.catch_warnings():
|
|
warnings.simplefilter('ignore', DeprecationWarning)
|
|
cm('sre_parse', ignore=('dump', 'groups', 'pos')) # from sre_constants import *; property
|
|
with temporary_main_spec():
|
|
cm(
|
|
'pdb',
|
|
# pyclbr does not handle elegantly `typing` or properties
|
|
ignore=('Union', '_ModuleTarget', '_ScriptTarget', '_ZipTarget', 'curframe_locals',
|
|
'_InteractState'),
|
|
)
|
|
cm('pydoc', ignore=('input', 'output',)) # properties
|
|
|
|
# Tests for modules inside packages
|
|
cm('email.parser')
|
|
cm('test.test_pyclbr')
|
|
|
|
|
|
class ReadmoduleTests(TestCase):
|
|
|
|
def setUp(self):
|
|
self._modules = pyclbr._modules.copy()
|
|
|
|
def tearDown(self):
|
|
pyclbr._modules = self._modules
|
|
|
|
|
|
def test_dotted_name_not_a_package(self):
|
|
# test ImportError is raised when the first part of a dotted name is
|
|
# not a package.
|
|
#
|
|
# Issue #14798.
|
|
self.assertRaises(ImportError, pyclbr.readmodule_ex, 'asyncio.foo')
|
|
|
|
def test_module_has_no_spec(self):
|
|
module_name = "doesnotexist"
|
|
assert module_name not in pyclbr._modules
|
|
with test_importlib_util.uncache(module_name):
|
|
with self.assertRaises(ModuleNotFoundError):
|
|
pyclbr.readmodule_ex(module_name)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest_main()
|