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# Copyright 2018 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import pytest
import proto
def test_int_init():
class Foo(proto.Message):
bar = proto.Field(proto.INT32, number=1)
baz = proto.Field(proto.INT32, number=2)
foo = Foo(bar=42)
assert foo.bar == 42
assert foo.baz == 0
assert not foo.baz
assert Foo.pb(foo).bar == 42
assert Foo.pb(foo).baz == 0
def test_int_rmw():
class Foo(proto.Message):
spam = proto.Field(proto.INT32, number=1)
eggs = proto.Field(proto.INT32, number=2)
foo = Foo(spam=42)
foo.eggs = 76 # trombones led the big parade...
assert foo.spam == 42
assert foo.eggs == 76
assert Foo.pb(foo).spam == 42
assert Foo.pb(foo).eggs == 76
foo.spam = 144
assert foo.spam == 144
assert foo.eggs == 76
assert Foo.pb(foo).spam == 144
assert Foo.pb(foo).eggs == 76
def test_int_del():
class Foo(proto.Message):
bar = proto.Field(proto.INT32, number=1)
foo = Foo(bar=42)
assert foo.bar == 42
del foo.bar
assert foo.bar == 0
assert not foo.bar
def test_int_size():
class Foo(proto.Message):
small = proto.Field(proto.INT32, number=1)
big = proto.Field(proto.INT64, number=2)
foo = Foo()
foo.big = 2**40
assert foo.big == 2**40
with pytest.raises(ValueError):
foo.small = 2**40
with pytest.raises(ValueError):
Foo(small=2**40)
def test_int_unsigned():
class Foo(proto.Message):
signed = proto.Field(proto.INT32, number=1)
unsigned = proto.Field(proto.UINT32, number=2)
foo = Foo()
foo.signed = -10
assert foo.signed == -10
with pytest.raises(ValueError):
foo.unsigned = -10
with pytest.raises(ValueError):
Foo(unsigned=-10)
def test_field_descriptor_idempotent():
class Foo(proto.Message):
bar = proto.Field(proto.INT32, number=1)
bar_field = Foo.meta.fields["bar"]
assert bar_field.descriptor is bar_field.descriptor
def test_int64_dict_round_trip():
# When converting a message to other types, protobuf turns int64 fields
# into decimal coded strings.
# This is not a problem for round trip JSON, but it is a problem
# when doing a round trip conversion from a message to a dict to a message.
# See https://github.com/protocolbuffers/protobuf/issues/2679
# and
# https://developers.google.com/protocol-buffers/docs/proto3#json
# for more details.
class Squid(proto.Message):
mass_kg = proto.Field(proto.INT64, number=1)
length_cm = proto.Field(proto.UINT64, number=2)
age_s = proto.Field(proto.FIXED64, number=3)
depth_m = proto.Field(proto.SFIXED64, number=4)
serial_num = proto.Field(proto.SINT64, number=5)
s = Squid(mass_kg=10, length_cm=20, age_s=30, depth_m=40, serial_num=50)
s_dict = Squid.to_dict(s)
s2 = Squid(s_dict)
assert s == s2
# Double check that the conversion works with deeply nested messages.
class Clam(proto.Message):
class Shell(proto.Message):
class Pearl(proto.Message):
mass_kg = proto.Field(proto.INT64, number=1)
pearl = proto.Field(Pearl, number=1)
shell = proto.Field(Shell, number=1)
c = Clam(shell=Clam.Shell(pearl=Clam.Shell.Pearl(mass_kg=10)))
c_dict = Clam.to_dict(c)
c2 = Clam(c_dict)
assert c == c2
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