'empty_call' unit tests failing on some libraries

[busunkim96]

https://source.cloud.google.com/results/invocations/a8592aaa-9284-46c8-b2a1-0abbecbd3e08/targets/cloud-devrel%2Fclient-libraries%2Fpython%2Fgoogleapis%2Fpython-secret-manager%2Fpresubmit%2Fpresubmit/log

=========================== short test summary info ============================
FAILED tests/unit/gapic/secretmanager_v1/test_secret_manager_service.py::test_set_iam_policy_empty_call
FAILED tests/unit/gapic/secretmanager_v1/test_secret_manager_service.py::test_get_iam_policy_empty_call
FAILED tests/unit/gapic/secretmanager_v1/test_secret_manager_service.py::test_test_iam_permissions_empty_call
FAILED tests/unit/gapic/secretmanager_v1beta1/test_secret_manager_service.py::test_set_iam_policy_empty_call
FAILED tests/unit/gapic/secretmanager_v1beta1/test_secret_manager_service.py::test_get_iam_policy_empty_call
FAILED tests/unit/gapic/secretmanager_v1beta1/test_secret_manager_service.py::test_test_iam_permissions_empty_call
6 failed, 432 passed in 6.87s

________________________ test_set_iam_policy_empty_call ________________________

    def test_set_iam_policy_empty_call():
        # This test is a coverage failsafe to make sure that totally empty calls,
        # i.e. request == None and no flattened fields passed, work.
        client = SecretManagerServiceClient(
            credentials=credentials.AnonymousCredentials(), transport="grpc",
        )

        # Mock the actual call within the gRPC stub, and fake the request.
        with mock.patch.object(type(client.transport.set_iam_policy), "__call__") as call:
>           client.set_iam_policy()

tests/unit/gapic/secretmanager_v1/test_secret_manager_service.py:3539:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = <google.cloud.secretmanager_v1.services.secret_manager_service.client.SecretManagerServiceClient object at 0x7fe0d352c850>
request = None

    def set_iam_policy(
        self,
        request: iam_policy.SetIamPolicyRequest = None,
        *,
        retry: retries.Retry = gapic_v1.method.DEFAULT,
        timeout: float = None,
        metadata: Sequence[Tuple[str, str]] = (),
    ) -> policy.Policy:
        r"""Sets the access control policy on the specified secret. Replaces
        any existing policy.

        Permissions on
        [SecretVersions][google.cloud.secretmanager.v1.SecretVersion]
        are enforced according to the policy set on the associated
        [Secret][google.cloud.secretmanager.v1.Secret].

        Args:
            request (google.iam.v1.iam_policy_pb2.SetIamPolicyRequest):
                The request object. Request message for `SetIamPolicy`
                method.

            retry (google.api_core.retry.Retry): Designation of what errors, if any,
                should be retried.
            timeout (float): The timeout for this request.
            metadata (Sequence[Tuple[str, str]]): Strings which should be
                sent along with the request as metadata.

        Returns:
            google.iam.v1.policy_pb2.Policy:
                Defines an Identity and Access Management (IAM) policy. It is used to
                   specify access control policies for Cloud Platform
                   resources.

                   A Policy is a collection of bindings. A binding binds
                   one or more members to a single role. Members can be
                   user accounts, service accounts, Google groups, and
                   domains (such as G Suite). A role is a named list of
                   permissions (defined by IAM or configured by users).
                   A binding can optionally specify a condition, which
                   is a logic expression that further constrains the
                   role binding based on attributes about the request
                   and/or target resource.

                   **JSON Example**

                      {
                         "bindings": [
                            {
                               "role":
                               "roles/resourcemanager.organizationAdmin",
                               "members": [ "user:mike@example.com",
                               "group:admins@example.com",
                               "domain:google.com",
                               "serviceAccount:my-project-id@appspot.gserviceaccount.com"
                               ]

                            }, { "role":
                            "roles/resourcemanager.organizationViewer",
                            "members": ["user:eve@example.com"],
                            "condition": { "title": "expirable access",
                            "description": "Does not grant access after
                            Sep 2020", "expression": "request.time <
                            timestamp('2020-10-01T00:00:00.000Z')", } }

                         ]

                      }

                   **YAML Example**

                      bindings: - members: - user:\ mike@example.com -
                      group:\ admins@example.com - domain:google.com -
                      serviceAccount:\ my-project-id@appspot.gserviceaccount.com
                      role: roles/resourcemanager.organizationAdmin -
                      members: - user:\ eve@example.com role:
                      roles/resourcemanager.organizationViewer
                      condition: title: expirable access description:
                      Does not grant access after Sep 2020 expression:
                      request.time <
                      timestamp('2020-10-01T00:00:00.000Z')

                   For a description of IAM and its features, see the
                   [IAM developer's
                   guide](\ https://cloud.google.com/iam/docs).

        """
        # Create or coerce a protobuf request object.

        # The request isn't a proto-plus wrapped type,
        # so it must be constructed via keyword expansion.
        if isinstance(request, dict):
            request = iam_policy.SetIamPolicyRequest(**request)

        # Wrap the RPC method; this adds retry and timeout information,
        # and friendly error handling.
        rpc = self._transport._wrapped_methods[self._transport.set_iam_policy]

        # Certain fields should be provided within the metadata header;
        # add these here.
        metadata = tuple(metadata) + (
>           gapic_v1.routing_header.to_grpc_metadata((("resource", request.resource),)),
        )
E       AttributeError: 'NoneType' object has no attribute 'resource'

google/cloud/secretmanager_v1/services/secret_manager_service/client.py:1510: AttributeError