mirror of https://github.com/mahmoud/boltons.git
89 lines
1.7 KiB
Python
89 lines
1.7 KiB
Python
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from collections import namedtuple
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from pytest import raises
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from boltons.debugutils import wrap_trace
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def test_trace_dict():
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target = {}
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wrapped = wrap_trace(target)
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assert target is not wrapped
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assert isinstance(wrapped, dict)
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wrapped['a'] = 'A'
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assert target['a'] == 'A'
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assert len(wrapped) == len(target)
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wrapped.pop('a')
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assert 'a' not in target
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with raises(AttributeError):
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wrapped.nonexistent_attr = 'nope'
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return
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def test_trace_bytes():
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target = u'Hello'.encode('ascii')
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wrapped = wrap_trace(target)
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assert target is not wrapped
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assert isinstance(wrapped, bytes)
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assert len(wrapped) == len(target)
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assert wrapped.decode('utf-8') == u'Hello'
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assert wrapped.lower() == target.lower()
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def test_trace_exc():
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class TestException(Exception):
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pass
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target = TestException('exceptions can be a good thing')
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wrapped = wrap_trace(target)
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try:
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raise wrapped
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except TestException as te:
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assert te.args == target.args
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def test_trace_which():
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class Config(object):
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def __init__(self, value):
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self.value = value
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config = Config('first')
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wrapped = wrap_trace(config, which='__setattr__')
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wrapped.value = 'second'
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assert config.value == 'second'
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def test_trace_namedtuple():
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TargetType = namedtuple('TargetType', 'x y z')
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target = TargetType(1, 2, 3)
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wrapped = wrap_trace(target)
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assert wrapped == (1, 2, 3)
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def test_trace_oldstyle():
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class Oldie:
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test = object()
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def get_test(self):
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return self.test
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oldie = Oldie()
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wrapped = wrap_trace(oldie)
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assert wrapped.get_test() is oldie.test
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return
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