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# Copyright 2016 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
#
# http://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 datetime
import mock
import pytest
from google.auth import app_engine
class _AppIdentityModule(object):
"""The interface of the App Idenity app engine module.
See https://cloud.google.com/appengine/docs/standard/python/refdocs
/google.appengine.api.app_identity.app_identity
"""
def get_application_id(self):
raise NotImplementedError()
def sign_blob(self, bytes_to_sign, deadline=None):
raise NotImplementedError()
def get_service_account_name(self, deadline=None):
raise NotImplementedError()
def get_access_token(self, scopes, service_account_id=None):
raise NotImplementedError()
@pytest.fixture
def app_identity(monkeypatch):
"""Mocks the app_identity module for google.auth.app_engine."""
app_identity_module = mock.create_autospec(_AppIdentityModule, instance=True)
monkeypatch.setattr(app_engine, "app_identity", app_identity_module)
yield app_identity_module
def test_get_project_id(app_identity):
app_identity.get_application_id.return_value = mock.sentinel.project
assert app_engine.get_project_id() == mock.sentinel.project
@mock.patch.object(app_engine, "app_identity", new=None)
def test_get_project_id_missing_apis():
with pytest.raises(EnvironmentError) as excinfo:
assert app_engine.get_project_id()
assert excinfo.match(r"App Engine APIs are not available")
class TestSigner(object):
def test_key_id(self, app_identity):
app_identity.sign_blob.return_value = (
mock.sentinel.key_id,
mock.sentinel.signature,
)
signer = app_engine.Signer()
assert signer.key_id is None
def test_sign(self, app_identity):
app_identity.sign_blob.return_value = (
mock.sentinel.key_id,
mock.sentinel.signature,
)
signer = app_engine.Signer()
to_sign = b"123"
signature = signer.sign(to_sign)
assert signature == mock.sentinel.signature
app_identity.sign_blob.assert_called_with(to_sign)
class TestCredentials(object):
@mock.patch.object(app_engine, "app_identity", new=None)
def test_missing_apis(self):
with pytest.raises(EnvironmentError) as excinfo:
app_engine.Credentials()
assert excinfo.match(r"App Engine APIs are not available")
def test_default_state(self, app_identity):
credentials = app_engine.Credentials()
# Not token acquired yet
assert not credentials.valid
# Expiration hasn't been set yet
assert not credentials.expired
# Scopes are required
assert not credentials.scopes
assert not credentials.default_scopes
assert credentials.requires_scopes
assert not credentials.quota_project_id
def test_with_scopes(self, app_identity):
credentials = app_engine.Credentials()
assert not credentials.scopes
assert credentials.requires_scopes
scoped_credentials = credentials.with_scopes(["email"])
assert scoped_credentials.has_scopes(["email"])
assert not scoped_credentials.requires_scopes
def test_with_default_scopes(self, app_identity):
credentials = app_engine.Credentials()
assert not credentials.scopes
assert not credentials.default_scopes
assert credentials.requires_scopes
scoped_credentials = credentials.with_scopes(
scopes=None, default_scopes=["email"]
)
assert scoped_credentials.has_scopes(["email"])
assert not scoped_credentials.requires_scopes
def test_with_quota_project(self, app_identity):
credentials = app_engine.Credentials()
assert not credentials.scopes
assert not credentials.quota_project_id
quota_project_creds = credentials.with_quota_project("project-foo")
assert quota_project_creds.quota_project_id == "project-foo"
def test_service_account_email_implicit(self, app_identity):
app_identity.get_service_account_name.return_value = (
mock.sentinel.service_account_email
)
credentials = app_engine.Credentials()
assert credentials.service_account_email == mock.sentinel.service_account_email
assert app_identity.get_service_account_name.called
def test_service_account_email_explicit(self, app_identity):
credentials = app_engine.Credentials(
service_account_id=mock.sentinel.service_account_email
)
assert credentials.service_account_email == mock.sentinel.service_account_email
assert not app_identity.get_service_account_name.called
@mock.patch("google.auth._helpers.utcnow", return_value=datetime.datetime.min)
def test_refresh(self, utcnow, app_identity):
token = "token"
ttl = 643942923
app_identity.get_access_token.return_value = token, ttl
credentials = app_engine.Credentials(
scopes=["email"], default_scopes=["profile"]
)
credentials.refresh(None)
app_identity.get_access_token.assert_called_with(
credentials.scopes, credentials._service_account_id
)
assert credentials.token == token
assert credentials.expiry == datetime.datetime(1990, 5, 29, 1, 2, 3)
assert credentials.valid
assert not credentials.expired
@mock.patch("google.auth._helpers.utcnow", return_value=datetime.datetime.min)
def test_refresh_with_default_scopes(self, utcnow, app_identity):
token = "token"
ttl = 643942923
app_identity.get_access_token.return_value = token, ttl
credentials = app_engine.Credentials(default_scopes=["email"])
credentials.refresh(None)
app_identity.get_access_token.assert_called_with(
credentials.default_scopes, credentials._service_account_id
)
assert credentials.token == token
assert credentials.expiry == datetime.datetime(1990, 5, 29, 1, 2, 3)
assert credentials.valid
assert not credentials.expired
def test_sign_bytes(self, app_identity):
app_identity.sign_blob.return_value = (
mock.sentinel.key_id,
mock.sentinel.signature,
)
credentials = app_engine.Credentials()
to_sign = b"123"
signature = credentials.sign_bytes(to_sign)
assert signature == mock.sentinel.signature
app_identity.sign_blob.assert_called_with(to_sign)
def test_signer(self, app_identity):
credentials = app_engine.Credentials()
assert isinstance(credentials.signer, app_engine.Signer)
def test_signer_email(self, app_identity):
credentials = app_engine.Credentials()
assert credentials.signer_email == credentials.service_account_email
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