from mercurial import demandimport

demandimport.enable()

import os

import subprocess

import sys

import types

# Don't import pycompat because it has too many side-effects.

ispy311 = (sys.version_info.major, sys.version_info.minor) >= (3, 11)

# Only run if demandimport is allowed

if subprocess.call(

    [os.environ['PYTHON'], '%s/hghave' % os.environ['TESTDIR'], 'demandimport']

):

    sys.exit(80)

# We rely on assert, which gets optimized out.

if sys.flags.optimize:

    sys.exit(80)

# The demand importer doesn't work on Python 3.5.

if sys.version_info[0:2] == (3, 5):

    sys.exit(80)

from importlib.util import _LazyModule

try:

    from importlib.util import _Module as moduletype

except ImportError:

    moduletype = types.ModuleType

if os.name != 'nt':

    try:

        import distutils.msvc9compiler

        print(

            'distutils.msvc9compiler needs to be an immediate '

            'importerror on non-windows platforms'

        )

        distutils.msvc9compiler

    except ImportError:

        pass

import re

rsub = re.sub

def f(obj):

    l = repr(obj)

    l = rsub("0x[0-9a-fA-F]+", "0x?", l)

    l = rsub("from '.*'", "from '?'", l)

    l = rsub("'<[a-z]*>'", "'<whatever>'", l)

    return l

demandimport.disable()

os.environ['HGDEMANDIMPORT'] = 'disable'

# this enable call should not actually enable demandimport!

demandimport.enable()

from mercurial import node

# We use assert instead of a unittest test case because having imports inside

# functions changes behavior of the demand importer.

assert not isinstance(node, _LazyModule)

# now enable it for real

del os.environ['HGDEMANDIMPORT']

demandimport.enable()

# Test access to special attributes through demandmod proxy

assert 'mercurial.error' not in sys.modules

from mercurial import error as errorproxy

assert isinstance(errorproxy, _LazyModule)

assert f(errorproxy) == "<module 'mercurial.error' from '?'>", f(errorproxy)

doc = ' '.join(errorproxy.__doc__.split()[:3])

assert doc == 'Mercurial exceptions. This', doc

assert errorproxy.__name__ == 'mercurial.error', errorproxy.__name__

# __name__ must be accessible via __dict__ so the relative imports can be

# resolved

name = errorproxy.__dict__['__name__']

assert name == 'mercurial.error', name

assert not isinstance(errorproxy, _LazyModule)

assert f(errorproxy) == "<module 'mercurial.error' from '?'>", f(errorproxy)

import os

assert not isinstance(os, _LazyModule)

if ispy311:

    assert f(os) == "<module 'os' (frozen)>", f(os)

else:

    assert f(os) == "<module 'os' from '?'>", f(os)

assert f(os.system) == '<built-in function system>', f(os.system)

if ispy311:

    assert f(os) == "<module 'os' (frozen)>", f(os)

else:

    assert f(os) == "<module 'os' from '?'>", f(os)

assert 'mercurial.utils.procutil' not in sys.modules

from mercurial.utils import procutil

assert isinstance(procutil, _LazyModule)

assert f(procutil) == "<module 'mercurial.utils.procutil' from '?'>", f(

    procutil

)

assert f(procutil.system) == '<function system at 0x?>', f(procutil.system)

assert procutil.__class__ == moduletype, procutil.__class__

assert f(procutil) == "<module 'mercurial.utils.procutil' from '?'>", f(

    procutil

)

assert f(procutil.system) == '<function system at 0x?>', f(procutil.system)

assert 'mercurial.hgweb' not in sys.modules

from mercurial import hgweb

assert isinstance(hgweb, _LazyModule)

assert f(hgweb) == "<module 'mercurial.hgweb' from '?'>", f(hgweb)

assert isinstance(hgweb.hgweb_mod, _LazyModule)

assert f(hgweb.hgweb_mod) == "<module 'mercurial.hgweb.hgweb_mod' from '?'>", f(

    hgweb.hgweb_mod

)

assert f(hgweb) == "<module 'mercurial.hgweb' from '?'>", f(hgweb)

import re as fred

assert not isinstance(fred, _LazyModule)

assert f(fred) == "<module 're' from '?'>"

import re as remod

assert not isinstance(remod, _LazyModule)

assert f(remod) == "<module 're' from '?'>"

import sys as re

assert not isinstance(re, _LazyModule)

assert f(re) == "<module 'sys' (built-in)>"

assert not isinstance(fred, _LazyModule)

assert f(fred) == "<module 're' from '?'>", f(fred)

assert f(fred.sub) == '<function sub at 0x?>', f(fred.sub)

assert not isinstance(fred, _LazyModule)

assert f(fred) == "<module 're' from '?'>", f(fred)

remod.escape  # use remod

assert f(remod) == "<module 're' from '?'>", f(remod)

assert not isinstance(re, _LazyModule)

assert f(re) == "<module 'sys' (built-in)>"

assert f(type(re.stderr)) == "<class '_io.TextIOWrapper'>", f(type(re.stderr))

assert f(re) == "<module 'sys' (built-in)>"

assert 'telnetlib' not in sys.modules

import telnetlib

assert isinstance(telnetlib, _LazyModule)

assert f(telnetlib) == "<module 'telnetlib' from '?'>"

try:

    from telnetlib import unknownattr

    assert False, (

        'no demandmod should be created for attribute of non-package '

        'module:\ntelnetlib.unknownattr = %s' % f(unknownattr)

    )

except ImportError as inst:

    assert rsub(r"'", '', str(inst)).startswith(

        'cannot import name unknownattr'

    )

# Unlike the import statement, __import__() function should not raise

# ImportError even if fromlist has an unknown item

# (see Python/import.c:import_module_level() and ensure_fromlist())

assert 'ftplib' not in sys.modules

zipfileimp = __import__('ftplib', globals(), locals(), ['unknownattr'])

assert f(zipfileimp) == "<module 'ftplib' from '?'>", f(zipfileimp)

assert not hasattr(zipfileimp, 'unknownattr')

# test deactivation for issue6725

del sys.modules['telnetlib']

with demandimport.deactivated():

    import telnetlib

assert telnetlib.__loader__ == telnetlib.__spec__.loader

assert telnetlib.__loader__.get_resource_reader