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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 base64
import pytest
import proto
def test_bytes_init():
class Foo(proto.Message):
bar = proto.Field(proto.BYTES, number=1)
baz = proto.Field(proto.BYTES, number=2)
foo = Foo(bar=b"spam")
assert foo.bar == b"spam"
assert foo.baz == b""
assert not foo.baz
assert Foo.pb(foo).bar == b"spam"
assert Foo.pb(foo).baz == b""
def test_bytes_rmw():
class Foo(proto.Message):
spam = proto.Field(proto.BYTES, number=1)
eggs = proto.Field(proto.BYTES, number=2)
foo = Foo(spam=b"bar")
foo.eggs = b"baz"
assert foo.spam == b"bar"
assert foo.eggs == b"baz"
assert Foo.pb(foo).spam == b"bar"
assert Foo.pb(foo).eggs == b"baz"
foo.spam = b"bacon"
assert foo.spam == b"bacon"
assert foo.eggs == b"baz"
assert Foo.pb(foo).spam == b"bacon"
assert Foo.pb(foo).eggs == b"baz"
def test_bytes_del():
class Foo(proto.Message):
bar = proto.Field(proto.BYTES, number=1)
foo = Foo(bar=b"spam")
assert foo.bar == b"spam"
del foo.bar
assert foo.bar == b""
assert not foo.bar
def test_bytes_string_distinct():
class Foo(proto.Message):
bar = proto.Field(proto.STRING, number=1)
baz = proto.Field(proto.BYTES, number=2)
foo = Foo()
assert foo.bar != foo.baz
# Since protobuf was written against Python 2, it accepts bytes objects
# for strings (but not vice versa).
foo.bar = b"anything"
assert foo.bar == "anything"
# We need to permit setting bytes fields from strings,
# but the marshalling needs to base64 decode the result.
# This is a requirement for interop with the vanilla protobuf runtime:
# converting a proto message to a dict base64 encodes the bytes
# because it may be sent over the network via a protocol like HTTP.
encoded_swallow: str = base64.urlsafe_b64encode(b"unladen swallow").decode("utf-8")
assert type(encoded_swallow) == str
foo.baz = encoded_swallow
assert foo.baz == b"unladen swallow"
def test_bytes_to_dict_bidi():
class Foo(proto.Message):
bar = proto.Field(proto.BYTES, number=1)
foo = Foo(bar=b"spam")
foo_dict = Foo.to_dict(foo)
foo_two = Foo(foo_dict)
assert foo == foo_two
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