Mercurial > hg
view tests/test-demandimport.py @ 42415:c767e655ffda
narrow: use narrow_widen wireproto command to widen in case of ellipses
Few releases ago, we introduce narrow_widen wireproto command to be used to widen
narrow repositories. Before this patch, that was used in non-ellipses cases
only. In ellipses cases, we still do exchange.pull() which can pull more data
than required.
After this patch, the client will first check whether server supports doing
ellipses widening using wireproto command or not by checking server's wireproto
capability. If the server is upto date and support latest ellipses capability,
we call the wireproto command. Otherwise we fallback to exchange.pull() like
before.
The compat code make sure that things works even if one of the client or server
is old. The initial version of this patch does not had this compat code. It's
added to help Google release things smoothly internally. I plan to drop the
compat code before the upcoming major release.
Due to change to wireproto command, the code looks a bit dirty, next patches
will clean that up.
Differential Revision: https://phab.mercurial-scm.org/D6436
author | Pulkit Goyal <7895pulkit@gmail.com> |
---|---|
date | Wed, 22 May 2019 02:59:48 +0530 |
parents | 30248d6bc057 |
children | 2372284d9457 |
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from __future__ import absolute_import, print_function 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. ispy3 = sys.version_info[0] >= 3 # Only run if demandimport is allowed if subprocess.call(['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) if ispy3: from importlib.util import _LazyModule try: from importlib.util import _Module as moduletype except ImportError: moduletype = types.ModuleType else: 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. if ispy3: assert not isinstance(node, _LazyModule) else: assert f(node) == "<module 'mercurial.node' from '?'>", f(node) # 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 if ispy3: # unsure why this isn't lazy. assert not isinstance(f, _LazyModule) assert f(errorproxy) == "<module 'mercurial.error' from '?'>", f(errorproxy) else: assert f(errorproxy) == "<unloaded module 'error'>", 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 if ispy3: assert not isinstance(errorproxy, _LazyModule) assert f(errorproxy) == "<module 'mercurial.error' from '?'>", f(errorproxy) else: assert f(errorproxy) == "<proxied module 'error'>", f(errorproxy) import os if ispy3: assert not isinstance(os, _LazyModule) assert f(os) == "<module 'os' from '?'>", f(os) else: assert f(os) == "<unloaded module 'os'>", f(os) assert f(os.system) == '<built-in function system>', f(os.system) assert f(os) == "<module 'os' from '?'>", f(os) assert 'mercurial.utils.procutil' not in sys.modules from mercurial.utils import procutil if ispy3: assert isinstance(procutil, _LazyModule) assert f(procutil) == "<module 'mercurial.utils.procutil' from '?'>", f( procutil ) else: assert f(procutil) == "<unloaded module 'procutil'>", 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 if ispy3: assert not 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) else: assert f(hgweb) == "<unloaded module 'hgweb'>", f(hgweb) assert f(hgweb.hgweb_mod) == "<unloaded module 'hgweb_mod'>", f( hgweb.hgweb_mod ) assert f(hgweb) == "<module 'mercurial.hgweb' from '?'>", f(hgweb) import re as fred if ispy3: assert not isinstance(fred, _LazyModule) assert f(fred) == "<module 're' from '?'>" else: assert f(fred) == "<unloaded module 're'>", f(fred) import re as remod if ispy3: assert not isinstance(remod, _LazyModule) assert f(remod) == "<module 're' from '?'>" else: assert f(remod) == "<unloaded module 're'>", f(remod) import sys as re if ispy3: assert not isinstance(re, _LazyModule) assert f(re) == "<module 'sys' (built-in)>" else: assert f(re) == "<unloaded module 'sys'>", f(re) if ispy3: assert not isinstance(fred, _LazyModule) assert f(fred) == "<module 're' from '?'>", f(fred) else: assert f(fred) == "<unloaded module 're'>", f(fred) assert f(fred.sub) == '<function sub at 0x?>', f(fred.sub) if ispy3: assert not isinstance(fred, _LazyModule) assert f(fred) == "<module 're' from '?'>", f(fred) else: assert f(fred) == "<proxied module 're'>", f(fred) remod.escape # use remod assert f(remod) == "<module 're' from '?'>", f(remod) if ispy3: 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)>" else: assert f(re) == "<unloaded module 'sys'>", f(re) assert f(re.stderr) == "<open file '<whatever>', mode 'w' at 0x?>", f( re.stderr ) assert f(re) == "<proxied module 'sys'>", f(re) assert 'telnetlib' not in sys.modules import telnetlib if ispy3: assert not isinstance(telnetlib, _LazyModule) assert f(telnetlib) == "<module 'telnetlib' from '?'>" else: assert f(telnetlib) == "<unloaded module 'telnetlib'>", f(telnetlib) 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' ) from mercurial import util # 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 'zipfile' not in sys.modules zipfileimp = __import__('zipfile', globals(), locals(), ['unknownattr']) assert f(zipfileimp) == "<module 'zipfile' from '?'>", f(zipfileimp) assert not util.safehasattr(zipfileimp, 'unknownattr')