Generated REST unit tests do not work if a nested field is used in url path #1386
Description
//google/cloud/redis/v1 is an example of such case:
rpc UpdateInstance(UpdateInstanceRequest) returns (google.longrunning.Operation) {
option (google.api.http) = {
patch: "/v1/{instance.name=projects/*/locations/*/instances/*}"
body: "instance"
};
option (google.api.method_signature) = "update_mask,instance";
option (google.longrunning.operation_info) = {
response_type: "google.cloud.redis.v1.Instance"
metadata_type: "google.cloud.redis.v1.OperationMetadata"
};
}