kopia lustrzana https://github.com/corrscope/corrscope
77 wiersze
2.1 KiB
Python
77 wiersze
2.1 KiB
Python
import pytest
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from corrscope.gui.data_bind import rgetattr, rsetattr, rhasattr
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def test_rgetattr():
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""" Test to ensure recursive model access works.
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GUI elements are named "prefix__" "recursive__attr" and bind to recursive.attr.
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https://stackoverflow__com/a/31174427/
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"""
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class Person(object):
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def __init__(self):
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self.pet = Pet()
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self.residence = Residence()
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class Pet(object):
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def __init__(self, name="Fido", species="Dog"):
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self.name = name
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self.species = species
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class Residence(object):
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def __init__(self, type="House", sqft=None):
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self.type = type
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self.sqft = sqft
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p = Person()
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# Test rgetattr(present)
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assert rgetattr(p, "pet__species") == "Dog"
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assert rgetattr(p, "pet__species", object()) == "Dog"
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# Test rgetattr(missing)
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assert rgetattr(p, "pet__ghost__species", "calico") == "calico"
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with pytest.raises(AttributeError):
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# Without a default argument, `rgetattr`, like `getattr`, raises
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# AttributeError when the dotted attribute is missing
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print(rgetattr(p, "pet__ghost__species"))
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# Test rsetattr()
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rsetattr(p, "pet__name", "Sparky")
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rsetattr(p, "residence__type", "Apartment")
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assert p.pet.name == "Sparky"
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assert p.residence.type == "Apartment"
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# Test rhasattr()
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assert rhasattr(p, "pet")
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assert rhasattr(p, "pet__name")
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# Test rhasattr(levels of missing)
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assert not rhasattr(p, "pet__ghost")
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assert not rhasattr(p, "pet__ghost__species")
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assert not rhasattr(p, "ghost")
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assert not rhasattr(p, "ghost__species")
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@pytest.mark.xfail(
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reason="rgetattr copied from Stack Overflow and subtly broken", strict=True
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)
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def test_rgetattr_broken():
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"""
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rgetattr(default) fails to short-circuit/return on the first missing attribute.
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I never use rgetattr(default) so I won't bother fixing the bug.
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Wrong answer:
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- None.foo AKA 1
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- 1.bar AKA 1
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- 1.imag == 0
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Right answer:
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- None.foo AKA return 1 to caller
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"""
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result = rgetattr(None, "foo__bar__imag", 1)
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assert result == 1, result
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