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"""Common lifecycle code for in-memory-ticket-exchange Face-layer tests."""

from grpc.framework.face import implementations
from grpc.framework.face.testing import base_util
from grpc.framework.face.testing import test_case
from grpc.framework.foundation import logging_pool

_TIMEOUT = 3
_MAXIMUM_POOL_SIZE = 10


class FaceTestCase(test_case.FaceTestCase):
  """Provides abstract Face-layer tests an in-memory implementation."""

  def set_up_implementation(
      self, name, methods, method_implementations,
      multi_method_implementation):
    servicer_pool = logging_pool.pool(_MAXIMUM_POOL_SIZE)
    stub_pool = logging_pool.pool(_MAXIMUM_POOL_SIZE)

    servicer = implementations.servicer(
        servicer_pool, method_implementations, multi_method_implementation)

    linked_pair = base_util.linked_pair(servicer, _TIMEOUT)
    stub = implementations.generic_stub(linked_pair.front, stub_pool)
    return stub, (servicer_pool, stub_pool, linked_pair)

  def tear_down_implementation(self, memo):
    servicer_pool, stub_pool, linked_pair = memo
    linked_pair.shut_down()
    stub_pool.shutdown(wait=True)
    servicer_pool.shutdown(wait=True)
