66 lines
2.3 KiB
Python
66 lines
2.3 KiB
Python
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from unittest import TestCase
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from test import test_support
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class Bucket(object):
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def __init__(self, value):
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self.__value = value
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def _get(self):
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return self.__value
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def _set(self, value):
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assert self.__value == value, "Value changed!"
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value = property(_get,_set)
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class PropBucket(object):
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def __init__(self):
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self.__dict__['_d'] = {}
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def __getattr__(self, attr):
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value = self._d.setdefault(attr, 0)
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self._d[attr] = value + 1
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return Bucket(value)
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def __setattr__(self, attr, value):
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value.append(attr)
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class EvaluationOrder(TestCase):
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def test_TestFunctionality(self):
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bucket = PropBucket()
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try:
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bucket.prop.value = bucket.prop.value + 0
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except AssertionError:
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pass
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else:
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assert False, "PropBucket is not working"
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def test_augassign(self):
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bucket = PropBucket()
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bucket.prop.value += 0
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def test_AssignOrder(self):
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bucket = PropBucket()
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expected = ['one','two','three']
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result = []
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bucket.one = bucket.two = bucket.three = result
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assert result == expected, "expected %s, got %s" % (expected, result)
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def test_operands(self):
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m = [(2,), (1,)].pop
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assert m() + m() == (1,2), "faulty operand order"
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def test_arguments(self):
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def one(a,b,c,d,*extra):
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return reduce(lambda r,x: r+x,extra,a+b+c+d)
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m = list((x,) for x in xrange(100,0,-1)).pop
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value = one(m(),m(),m(),m())
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assert value == (1,2,3,4), "simple call, got: %s " % (value,)
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value = one(m(),m(),d=m(),c=m())
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assert value == (5,6,8,7), "call with keywords, got: %s" % (value,)
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value = one(m(),m(),m(),m(),m(),m())
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assert value == (9,10,11,12,13,14), "long call, got: %s" % (value,)
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value = one(m(),m(),*[m(),m(),m(),m()])
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assert value == (15,16,17,18,19,20), "varcalls, got: %s" % (value,)
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value = one(m(),m(),**dict(c=m(),d=m()))
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assert value == (21,22,23,24), "varkeywordcall, got: %s" % (value,)
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value = one(*[m(),m()],**dict(c=m(),d=m()))
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assert value == (25,26,27,28), "bothvarcalls, got: %s" % (value,)
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def test_main():
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test_support.run_unittest(EvaluationOrder)
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if __name__ == '__main__':
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test_main()
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