text: # -*- coding: utf-8 -*-
  #
  # Copyright 2019 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.
  """Unit tests."""
  
  import mock
  import pytest
  
  from google.cloud import logging_v2
  from google.cloud.logging_v2.proto import logging_metrics_pb2
  from google.protobuf import empty_pb2
  
  
  class MultiCallableStub(object):
      """Stub for the grpc.UnaryUnaryMultiCallable interface."""
  
      def __init__(self, method, channel_stub):
          self.method = method
          self.channel_stub = channel_stub
  
      def __call__(self, request, timeout=None, metadata=None, credentials=None):
          self.channel_stub.requests.append((self.method, request))
  
          response = None
          if self.channel_stub.responses:
              response = self.channel_stub.responses.pop()
  
          if isinstance(response, Exception):
              raise response
  
          if response:
              return response
  
  
  class ChannelStub(object):
      """Stub for the grpc.Channel interface."""
  
      def __init__(self, responses=[]):
          self.responses = responses
          self.requests = []
  
      def unary_unary(self, method, request_serializer=None, response_deserializer=None):
          return MultiCallableStub(method, self)
  
  
  class CustomException(Exception):
      pass
  
  
  class TestMetricsServiceV2Client(object):
      def test_list_log_metrics(self):
          # Setup Expected Response
          next_page_token = ""
          metrics_element = {}
          metrics = [metrics_element]
          expected_response = {"next_page_token": next_page_token, "metrics": metrics}
          expected_response = logging_metrics_pb2.ListLogMetricsResponse(
              **expected_response
          )
  
          # Mock the API response
          channel = ChannelStub(responses=[expected_response])
          patch = mock.patch("google.api_core.grpc_helpers.create_channel")
          with patch as create_channel:
              create_channel.return_value = channel
              client = logging_v2.MetricsServiceV2Client()
  
          # Setup Request
          parent = client.project_path("[PROJECT]")
  
          paged_list_response = client.list_log_metrics(parent)
          resources = list(paged_list_response)
          assert len(resources) == 1
  
          assert expected_response.metrics[0] == resources[0]
  
          assert len(channel.requests) == 1
          expected_request = logging_metrics_pb2.ListLogMetricsRequest(parent=parent)
          actual_request = channel.requests[0][1]
          assert expected_request == actual_request
  
      def test_list_log_metrics_exception(self):
          channel = ChannelStub(responses=[CustomException()])
          patch = mock.patch("google.api_core.grpc_helpers.create_channel")
          with patch as create_channel:
              create_channel.return_value = channel
              client = logging_v2.MetricsServiceV2Client()
  
          # Setup request
          parent = client.project_path("[PROJECT]")
  
          paged_list_response = client.list_log_metrics(parent)
          with pytest.raises(CustomException):
              list(paged_list_response)
  
      def test_get_log_metric(self):
          # Setup Expected Response
          name = "name3373707"
          description = "description-1724546052"
          filter_ = "filter-1274492040"
          value_extractor = "valueExtractor2047672534"
          expected_response = {
              "name": name,
              "description": description,
              "filter": filter_,
              "value_extractor": value_extractor,
          }
          expected_response = logging_metrics_pb2.LogMetric(**expected_response)
  
          # Mock the API response
          channel = ChannelStub(responses=[expected_response])
          patch = mock.patch("google.api_core.grpc_helpers.create_channel")
          with patch as create_channel:
              create_channel.return_value = channel
              client = logging_v2.MetricsServiceV2Client()
  
          # Setup Request
          metric_name = client.metric_path("[PROJECT]", "[METRIC]")
  
          response = client.get_log_metric(metric_name)
          assert expected_response == response
  
          assert len(channel.requests) == 1
          expected_request = logging_metrics_pb2.GetLogMetricRequest(
              metric_name=metric_name
          )
          actual_request = channel.requests[0][1]
          assert expected_request == actual_request
  
      def test_get_log_metric_exception(self):
          # Mock the API response
          channel = ChannelStub(responses=[CustomException()])
          patch = mock.patch("google.api_core.grpc_helpers.create_channel")
          with patch as create_channel:
              create_channel.return_value = channel
              client = logging_v2.MetricsServiceV2Client()
  
          # Setup request
          metric_name = client.metric_path("[PROJECT]", "[METRIC]")
  
          with pytest.raises(CustomException):
              client.get_log_metric(metric_name)
  
      def test_create_log_metric(self):
          # Setup Expected Response
          name = "name3373707"
          description = "description-1724546052"
          filter_ = "filter-1274492040"
          value_extractor = "valueExtractor2047672534"
          expected_response = {
              "name": name,
              "description": description,
              "filter": filter_,
              "value_extractor": value_extractor,
          }
          expected_response = logging_metrics_pb2.LogMetric(**expected_response)
  
          # Mock the API response
          channel = ChannelStub(responses=[expected_response])
          patch = mock.patch("google.api_core.grpc_helpers.create_channel")
          with patch as create_channel:
              create_channel.return_value = channel
              client = logging_v2.MetricsServiceV2Client()
  
          # Setup Request
          parent = client.project_path("[PROJECT]")
          metric = {}
  
          response = client.create_log_metric(parent, metric)
          assert expected_response == response
  
          assert len(channel.requests) == 1
          expected_request = logging_metrics_pb2.CreateLogMetricRequest(
              parent=parent, metric=metric
          )
          actual_request = channel.requests[0][1]
          assert expected_request == actual_request
  
      def test_create_log_metric_exception(self):
          # Mock the API response
          channel = ChannelStub(responses=[CustomException()])
          patch = mock.patch("google.api_core.grpc_helpers.create_channel")
          with patch as create_channel:
              create_channel.return_value = channel
              client = logging_v2.MetricsServiceV2Client()
  
          # Setup request
          parent = client.project_path("[PROJECT]")
          metric = {}
  
          with pytest.raises(CustomException):
              client.create_log_metric(parent, metric)
  
      def test_update_log_metric(self):
          # Setup Expected Response
          name = "name3373707"
          description = "description-1724546052"
          filter_ = "filter-1274492040"
          value_extractor = "valueExtractor2047672534"
          expected_response = {
              "name": name,
              "description": description,
              "filter": filter_,
              "value_extractor": value_extractor,
          }
          expected_response = logging_metrics_pb2.LogMetric(**expected_response)
  
          # Mock the API response
          channel = ChannelStub(responses=[expected_response])
          patch = mock.patch("google.api_core.grpc_helpers.create_channel")
          with patch as create_channel:
              create_channel.return_value = channel
              client = logging_v2.MetricsServiceV2Client()
  
          # Setup Request
          metric_name = client.metric_path("[PROJECT]", "[METRIC]")
          metric = {}
  
          response = client.update_log_metric(metric_name, metric)
          assert expected_response == response
  
          assert len(channel.requests) == 1
          expected_request = logging_metrics_pb2.UpdateLogMetricRequest(
              metric_name=metric_name, metric=metric
          )
          actual_request = channel.requests[0][1]
          assert expected_request == actual_request
  
      def test_update_log_metric_exception(self):
          # Mock the API response
          channel = ChannelStub(responses=[CustomException()])
          patch = mock.patch("google.api_core.grpc_helpers.create_channel")
          with patch as create_channel:
              create_channel.return_value = channel
              client = logging_v2.MetricsServiceV2Client()
  
          # Setup request
          metric_name = client.metric_path("[PROJECT]", "[METRIC]")
          metric = {}
  
          with pytest.raises(CustomException):
              client.update_log_metric(metric_name, metric)
  
      def test_delete_log_metric(self):
          channel = ChannelStub()
          patch = mock.patch("google.api_core.grpc_helpers.create_channel")
          with patch as create_channel:
              create_channel.return_value = channel
              client = logging_v2.MetricsServiceV2Client()
  
          # Setup Request
          metric_name = client.metric_path("[PROJECT]", "[METRIC]")
  
          client.delete_log_metric(metric_name)
  
          assert len(channel.requests) == 1
          expected_request = logging_metrics_pb2.DeleteLogMetricRequest(
              metric_name=metric_name
          )
          actual_request = channel.requests[0][1]
          assert expected_request == actual_request
  
      def test_delete_log_metric_exception(self):
          # Mock the API response
          channel = ChannelStub(responses=[CustomException()])
          patch = mock.patch("google.api_core.grpc_helpers.create_channel")
          with patch as create_channel:
              create_channel.return_value = channel
              client = logging_v2.MetricsServiceV2Client()
  
          # Setup request
          metric_name = client.metric_path("[PROJECT]", "[METRIC]")
  
          with pytest.raises(CustomException):
              client.delete_log_metric(metric_name)
  