def test_get_slot_from_several_parents():
"""
o.parents
|
|-- p <-- cycle, yay --,
| |-- x -> Object() |
| |-- y -> Object() |
| `-- z -> p --------'
|
`-- p3
`-- x -> p2
|
`-- xex
"""
val = PrimitiveStrObject("it is xex!")
p = Object()
p.meta_add_slot("x", Object())
p.meta_add_slot("y", Object())
p.meta_add_slot("z", p) # cycle, yay!
p2 = Object()
p.meta_add_slot("xex", val)
p3 = Object()
p.meta_add_slot("x", p2)
o = Object()
o.meta_add_parent("p", p)
o.meta_add_parent("p3", p3)
assert o.get_slot("xex") is None
assert o.parent_lookup("xex") is val
def test_parent_lookup_from_parent_tree():
"""
Based on real case.
"""
value = PrimitiveStrObject("value")
o1 = Object()
o2 = Object()
o3 = o2.clone()
o4 = Object()
o5 = Object()
o1.scope_parent = o2
o2.scope_parent = o3
o2.meta_add_parent("*", o5)
o3.scope_parent = o4
o3.meta_add_parent("*", o5)
o4.scope_parent = o5
o4.meta_add_slot("value", value)
assert o1.get_slot("value") is None
assert o1.parent_lookup("value") is value
def test_get_slot_from_one_parent():
val = PrimitiveStrObject("it is xex!")
p = Object()
p.meta_add_slot("xex", val)
o = Object()
o.meta_add_parent("p", p)
assert o.get_slot("xex") is None
assert o.parent_lookup("xex") is val
