def test_properties():
instance = m.TestProperties()
assert instance.def_readonly == 1
with pytest.raises(AttributeError):
instance.def_readonly = 2
instance.def_readwrite = 2
assert instance.def_readwrite == 2
assert instance.def_property_readonly == 2
with pytest.raises(AttributeError):
instance.def_property_readonly = 3
instance.def_property = 3
assert instance.def_property == 3
with pytest.raises(AttributeError) as excinfo:
dummy = instance.def_property_writeonly # noqa: F841 unused var
assert "unreadable attribute" in str(excinfo.value)
instance.def_property_writeonly = 4
assert instance.def_property_readonly == 4
with pytest.raises(AttributeError) as excinfo:
dummy = instance.def_property_impossible # noqa: F841 unused var
assert "unreadable attribute" in str(excinfo.value)
with pytest.raises(AttributeError) as excinfo:
instance.def_property_impossible = 5
assert "can't set attribute" in str(excinfo.value)
def test_static_properties():
assert m.TestProperties.def_readonly_static == 1
with pytest.raises(AttributeError) as excinfo:
m.TestProperties.def_readonly_static = 2
assert "can't set attribute" in str(excinfo)
m.TestProperties.def_readwrite_static = 2
assert m.TestProperties.def_readwrite_static == 2
assert m.TestProperties.def_property_readonly_static == 2
with pytest.raises(AttributeError) as excinfo:
m.TestProperties.def_property_readonly_static = 3
assert "can't set attribute" in str(excinfo)
m.TestProperties.def_property_static = 3
assert m.TestProperties.def_property_static == 3
# Static property read and write via instance
instance = m.TestProperties()
m.TestProperties.def_readwrite_static = 0
assert m.TestProperties.def_readwrite_static == 0
assert instance.def_readwrite_static == 0
instance.def_readwrite_static = 2
assert m.TestProperties.def_readwrite_static == 2
assert instance.def_readwrite_static == 2
# It should be possible to override properties in derived classes
assert m.TestPropertiesOverride().def_readonly == 99
assert m.TestPropertiesOverride.def_readonly_static == 99
def test_static_cls():
"""Static property getter and setters expect the type object as the their only argument"""
instance = m.TestProperties()
assert m.TestProperties.static_cls is m.TestProperties
assert instance.static_cls is m.TestProperties
def check_self(self):
assert self is m.TestProperties
m.TestProperties.static_cls = check_self
instance.static_cls = check_self
def test_static_properties():
assert m.TestProperties.def_readonly_static == 1
with pytest.raises(AttributeError) as excinfo:
m.TestProperties.def_readonly_static = 2
assert "can't set attribute" in str(excinfo.value)
m.TestProperties.def_readwrite_static = 2
assert m.TestProperties.def_readwrite_static == 2
with pytest.raises(AttributeError) as excinfo:
dummy = m.TestProperties.def_writeonly_static # noqa: F841 unused var
assert "unreadable attribute" in str(excinfo.value)
m.TestProperties.def_writeonly_static = 3
assert m.TestProperties.def_readonly_static == 3
assert m.TestProperties.def_property_readonly_static == 3
with pytest.raises(AttributeError) as excinfo:
m.TestProperties.def_property_readonly_static = 99
assert "can't set attribute" in str(excinfo.value)
m.TestProperties.def_property_static = 4
assert m.TestProperties.def_property_static == 4
with pytest.raises(AttributeError) as excinfo:
dummy = m.TestProperties.def_property_writeonly_static
assert "unreadable attribute" in str(excinfo.value)
m.TestProperties.def_property_writeonly_static = 5
assert m.TestProperties.def_property_static == 5
# Static property read and write via instance
instance = m.TestProperties()
m.TestProperties.def_readwrite_static = 0
assert m.TestProperties.def_readwrite_static == 0
assert instance.def_readwrite_static == 0
instance.def_readwrite_static = 2
assert m.TestProperties.def_readwrite_static == 2
assert instance.def_readwrite_static == 2
with pytest.raises(AttributeError) as excinfo:
dummy = instance.def_property_writeonly_static # noqa: F841 unused var
assert "unreadable attribute" in str(excinfo.value)
instance.def_property_writeonly_static = 4
assert instance.def_property_static == 4
# It should be possible to override properties in derived classes
assert m.TestPropertiesOverride().def_readonly == 99
assert m.TestPropertiesOverride.def_readonly_static == 99
def test_properties():
instance = m.TestProperties()
assert instance.def_readonly == 1
with pytest.raises(AttributeError):
instance.def_readonly = 2
instance.def_readwrite = 2
assert instance.def_readwrite == 2
assert instance.def_property_readonly == 2
with pytest.raises(AttributeError):
instance.def_property_readonly = 3
instance.def_property = 3
assert instance.def_property == 3
def test_static_properties():
assert m.TestProperties.def_readonly_static == 1
with pytest.raises(AttributeError) as excinfo:
m.TestProperties.def_readonly_static = 2
assert NO_SETTER_MSG in str(excinfo.value)
m.TestProperties.def_readwrite_static = 2
assert m.TestProperties.def_readwrite_static == 2
with pytest.raises(AttributeError) as excinfo:
dummy = m.TestProperties.def_writeonly_static # unused var
assert NO_GETTER_MSG in str(excinfo.value)
m.TestProperties.def_writeonly_static = 3
assert m.TestProperties.def_readonly_static == 3
assert m.TestProperties.def_property_readonly_static == 3
with pytest.raises(AttributeError) as excinfo:
m.TestProperties.def_property_readonly_static = 99
assert NO_SETTER_MSG in str(excinfo.value)
m.TestProperties.def_property_static = 4
assert m.TestProperties.def_property_static == 4
with pytest.raises(AttributeError) as excinfo:
dummy = m.TestProperties.def_property_writeonly_static
assert NO_GETTER_MSG in str(excinfo.value)
m.TestProperties.def_property_writeonly_static = 5
assert m.TestProperties.def_property_static == 5
# Static property read and write via instance
instance = m.TestProperties()
m.TestProperties.def_readwrite_static = 0
assert m.TestProperties.def_readwrite_static == 0
assert instance.def_readwrite_static == 0
instance.def_readwrite_static = 2
assert m.TestProperties.def_readwrite_static == 2
assert instance.def_readwrite_static == 2
with pytest.raises(AttributeError) as excinfo:
dummy = instance.def_property_writeonly_static # noqa: F841 unused var
assert NO_GETTER_MSG in str(excinfo.value)
instance.def_property_writeonly_static = 4
assert instance.def_property_static == 4
# It should be possible to override properties in derived classes
assert m.TestPropertiesOverride().def_readonly == 99
assert m.TestPropertiesOverride.def_readonly_static == 99
# Only static attributes can be deleted
del m.TestPropertiesOverride.def_readonly_static
assert (hasattr(m.TestPropertiesOverride, "def_readonly_static")
and m.TestPropertiesOverride.def_readonly_static is
m.TestProperties.def_readonly_static)
assert "def_readonly_static" not in m.TestPropertiesOverride.__dict__
properties_override = m.TestPropertiesOverride()
with pytest.raises(AttributeError) as excinfo:
del properties_override.def_readonly
assert NO_DELETER_MSG in str(excinfo.value)
