def test_lookup_nested_absent_raise():
"""lookup raises KeyError for absent items by default"""
data = {"a": {"b": {"c": 123}}}
with pytest.raises(KeyError) as error:
lookup(data, "a.b.d")
assert "a.b.d" in str(error.value)
def _data_to_init_args(cls, data):
# maps from raw Pulp dict to a kwargs dict used to initialize
# a new object of this class.
#
# The default implementation looks at defined attributes and metadata
# (PULP2_FIELD). If this is not sufficient, subclasses can override
# this, and can also call super() to reuse this as needed.
out = {}
fields = attr.fields(cls)
absent = object()
for field in fields:
pulp_field = field.metadata.get(PULP2_FIELD)
if pulp_field:
value = lookup(data, pulp_field, absent)
if value is not absent:
converter = get_converter(field, value)
value = converter(value)
out[field.name] = value
return out
def test_lookup_nested_found():
"""lookup can find elements in nested dicts"""
data = {"a": {"b": {"c": 123}}}
assert lookup(data, "a.b.c") == 123
def test_lookup_nested_absent_default():
"""lookup returns given default value for failed lookup"""
data = {"a": {"b": {"c": 123}}}
assert lookup(data, "a.d.c", "my-default") == "my-default"