File: test_fields_composite.py

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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 proto


def test_composite_init():
    class Foo(proto.Message):
        bar = proto.Field(proto.STRING, number=1)
        baz = proto.Field(proto.INT64, number=2)

    class Spam(proto.Message):
        foo = proto.Field(proto.MESSAGE, number=1, message=Foo)
        eggs = proto.Field(proto.BOOL, number=2)

    spam = Spam(foo=Foo(bar="str", baz=42))
    assert spam.foo.bar == "str"
    assert spam.foo.baz == 42
    assert spam.eggs is False


def test_composite_inner_rmw():
    class Foo(proto.Message):
        bar = proto.Field(proto.STRING, number=1)

    class Spam(proto.Message):
        foo = proto.Field(proto.MESSAGE, number=1, message=Foo)

    spam = Spam(foo=Foo(bar="str"))
    spam.foo.bar = "other str"
    assert spam.foo.bar == "other str"
    assert Spam.pb(spam).foo.bar == "other str"


def test_composite_empty_inner_rmw():
    class Foo(proto.Message):
        bar = proto.Field(proto.INT32, number=1)

    class Spam(proto.Message):
        foo = proto.Field(proto.MESSAGE, number=1, message=Foo)

    spam = Spam()
    spam.foo.bar = 42
    assert spam.foo.bar == 42


def test_composite_outer_rmw():
    class Foo(proto.Message):
        bar = proto.Field(proto.FLOAT, number=1)

    class Spam(proto.Message):
        foo = proto.Field(proto.MESSAGE, number=1, message=Foo)

    spam = Spam(foo=Foo(bar=3.14159))
    spam.foo = Foo(bar=2.71828)
    assert abs(spam.foo.bar - 2.71828) < 1e-7


def test_composite_dict_write():
    class Foo(proto.Message):
        bar = proto.Field(proto.FLOAT, number=1)

    class Spam(proto.Message):
        foo = proto.Field(proto.MESSAGE, number=1, message=Foo)

    spam = Spam()
    spam.foo = {"bar": 2.71828}
    assert abs(spam.foo.bar - 2.71828) < 1e-7


def test_composite_del():
    class Foo(proto.Message):
        bar = proto.Field(proto.STRING, number=1)

    class Spam(proto.Message):
        foo = proto.Field(proto.MESSAGE, number=1, message=Foo)

    spam = Spam(foo=Foo(bar="str"))
    del spam.foo
    assert not spam.foo
    assert isinstance(spam.foo, Foo)
    assert spam.foo.bar == ""