Mercurial > hg
view tests/test-extensions-wrapfunction.py @ 47170:6e0ee1810fbd
revlog: rename `versionflags` to header
The variable is named as such because it contains "version" information and
"flags" information. However you mostly needs to know the code to understand the
name which is not great. The fact that this is the very first four bytes in all
revlog seems more relevant, so we rename the variable "header".
Differential Revision: https://phab.mercurial-scm.org/D10596
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Mon, 03 May 2021 12:26:06 +0200 |
parents | 2372284d9457 |
children | 6000f5b25c9b |
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from __future__ import absolute_import, print_function from mercurial import extensions def genwrapper(x): def f(orig, *args, **kwds): return [x] + orig(*args, **kwds) f.x = x return f def getid(wrapper): return getattr(wrapper, 'x', '-') wrappers = [genwrapper(i) for i in range(5)] class dummyclass(object): def getstack(self): return ['orig'] dummy = dummyclass() def batchwrap(wrappers): for w in wrappers: extensions.wrapfunction(dummy, 'getstack', w) print('wrap %d: %s' % (getid(w), dummy.getstack())) def batchunwrap(wrappers): for w in wrappers: result = None try: result = extensions.unwrapfunction(dummy, 'getstack', w) msg = str(dummy.getstack()) except (ValueError, IndexError) as e: msg = e.__class__.__name__ print('unwrap %s: %s: %s' % (getid(w), getid(result), msg)) batchwrap(wrappers + [wrappers[0]]) batchunwrap( [ (wrappers[i] if i is not None and i >= 0 else None) for i in [3, None, 0, 4, 0, 2, 1, None] ] ) wrap0 = extensions.wrappedfunction(dummy, 'getstack', wrappers[0]) wrap1 = extensions.wrappedfunction(dummy, 'getstack', wrappers[1]) # Use them in a different order from how they were created to check that # the wrapping happens in __enter__, not in __init__ print('context manager', dummy.getstack()) with wrap1: print('context manager', dummy.getstack()) with wrap0: print('context manager', dummy.getstack()) # Bad programmer forgets to unwrap the function, but the context # managers still unwrap their wrappings. extensions.wrapfunction(dummy, 'getstack', wrappers[2]) print('context manager', dummy.getstack()) print('context manager', dummy.getstack()) print('context manager', dummy.getstack()) # Wrap callable object which has no __name__ class callableobj(object): def __call__(self): return ['orig'] dummy.cobj = callableobj() extensions.wrapfunction(dummy, 'cobj', wrappers[0]) print('wrap callable object', dummy.cobj())