def test_context_serialization():
def custom_resolver(name):
if name == 'SBKImpl':
return SBKImpl
test_resolvers = [custom_resolver] + cirq.DEFAULT_RESOLVERS
sbki_empty = SBKImpl('sbki_empty')
assert_json_roundtrip_works(sbki_empty, resolvers=test_resolvers)
sbki_list = SBKImpl('sbki_list', data_list=[sbki_empty, sbki_empty])
assert_json_roundtrip_works(sbki_list, resolvers=test_resolvers)
sbki_tuple = SBKImpl('sbki_tuple', data_tuple=(sbki_list, sbki_list))
assert_json_roundtrip_works(sbki_tuple, resolvers=test_resolvers)
sbki_dict = SBKImpl('sbki_dict',
data_dict={
'a': sbki_tuple,
'b': sbki_tuple
})
assert_json_roundtrip_works(sbki_dict, resolvers=test_resolvers)
sbki_json = str(cirq.to_json(sbki_dict))
# There should be exactly one context item for each previous SBKImpl.
assert sbki_json.count('"cirq_type": "_SerializedContext"') == 4
# There should be exactly two key items for each of sbki_(empty|list|tuple),
# plus one for the top-level sbki_dict.
assert sbki_json.count('"cirq_type": "_SerializedKey"') == 7
# The final object should be a _SerializedKey for sbki_dict.
final_obj_idx = sbki_json.rfind('{')
final_obj = sbki_json[final_obj_idx:sbki_json.find('}', final_obj_idx) + 1]
assert (final_obj == """{
"cirq_type": "_SerializedKey",
"key": "sbki_dict"
}""")
list_sbki = [sbki_dict]
assert_json_roundtrip_works(list_sbki, resolvers=test_resolvers)
dict_sbki = {'a': sbki_dict}
assert_json_roundtrip_works(dict_sbki, resolvers=test_resolvers)
assert sbki_list != json_serialization._SerializedKey(sbki_list)
sbki_other_list = SBKImpl('sbki_list', data_list=[sbki_list])
with pytest.raises(
ValueError,
match='different objects with the same serialization key'):
_ = cirq.to_json(sbki_other_list)
def test_internal_serializer_types():
sbki = SBKImpl('test_key')
test_key = json_serialization._SerializedKey(sbki)
test_context = json_serialization._SerializedContext(sbki)
test_serialization = json_serialization._ContextualSerialization(sbki)
key_json = test_key._json_dict_()
with pytest.raises(TypeError, match='_from_json_dict_'):
_ = json_serialization._SerializedKey._from_json_dict_(**key_json)
context_json = test_context._json_dict_()
with pytest.raises(TypeError, match='_from_json_dict_'):
_ = json_serialization._SerializedContext._from_json_dict_(**context_json)
serialization_json = test_serialization._json_dict_()
with pytest.raises(TypeError, match='_from_json_dict_'):
_ = json_serialization._ContextualSerialization._from_json_dict_(**serialization_json)