tests/test-extensions-wrapfunction.py
author Gregory Szorc <gregory.szorc@gmail.com>
Mon, 13 Mar 2017 17:49:13 -0700
changeset 31435 43a7dfbead0c
parent 29777 19578bb84731
child 34032 47e52f079a57
permissions -rw-r--r--
parsers: handle refcounting of "parents" consistently Py_None can be refcounted like any other Python object. So do that.
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from __future__ import absolute_import, print_function
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from mercurial import extensions
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def genwrapper(x):
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    def f(orig, *args, **kwds):
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        return [x] + orig(*args, **kwds)
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    f.x = x
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    return f
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def getid(wrapper):
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    return getattr(wrapper, 'x', '-')
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wrappers = [genwrapper(i) for i in range(5)]
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class dummyclass(object):
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    def getstack(self):
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        return ['orig']
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dummy = dummyclass()
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def batchwrap(wrappers):
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    for w in wrappers:
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        extensions.wrapfunction(dummy, 'getstack', w)
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        print('wrap %d: %s' % (getid(w), dummy.getstack()))
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def batchunwrap(wrappers):
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    for w in wrappers:
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        result = None
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        try:
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            result = extensions.unwrapfunction(dummy, 'getstack', w)
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            msg = str(dummy.getstack())
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        except (ValueError, IndexError) as e:
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            msg = e.__class__.__name__
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        print('unwrap %s: %s: %s' % (getid(w), getid(result), msg))
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batchwrap(wrappers + [wrappers[0]])
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batchunwrap([(wrappers[i] if i >= 0 else None)
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             for i in [3, None, 0, 4, 0, 2, 1, None]])