def to_python(self, value):
"""Returns a LabeledConstraintMap object."""
if isinstance(value, LabeledConstraintMap):
return value
elif value is not None and len(value.strip()) != 0:
return LabeledConstraintMap(value)
def test__len__for_empty_map(self):
lcm = LabeledConstraintMap('')
self.assertThat(lcm, HasLength(0))
def test__len__for_populated_map(self):
lcm = LabeledConstraintMap('eth0:space=1;eth1:space=2')
self.assertThat(lcm, HasLength(2))
def test__len__for_null_map(self):
lcm = LabeledConstraintMap(None)
self.assertThat(lcm, HasLength(0))