Add test for verifying to get memory usage in client request

src/ruby/end2end/client_memory_usage_client.rb

@@ -0,0 +1,44 @@
+#!/usr/bin/env ruby
+
+# Copyright 2018 gRPC authors.
+#
+# 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.
+
+require_relative './end2end_common'
+require 'objspace'
+
+def main
+  server_port = ''
+  loop_count = 200
+
+  OptionParser.new do |opts|
+    opts.on('--client_control_port=P', String) do
+      STDERR.puts 'client_control_port ignored'
+    end
+    opts.on('--server_port=P', String) do |p|
+      server_port = p
+    end
+  end.parse!
+
+  loop_count.times do
+    stub = Echo::EchoServer::Stub.new("localhost:#{server_port}", :this_channel_is_insecure)
+    stub.echo(Echo::EchoRequest.new(request: 'client/child'))
+
+    # Get memory usage of all objects
+    ObjectSpace.memsize_of_all
+  end
+
+  STDERR.puts "Succeeded in getting memory usage for #{loop_count} times"
+end
+
+main

src/ruby/end2end/client_memory_usage_driver.rb

@@ -0,0 +1,36 @@
+#!/usr/bin/env ruby
+
+# Copyright 2018 gRPC authors.
+#
+# 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.
+
+require_relative './end2end_common'
+
+def main
+  STDERR.puts 'start server'
+  server_runner = ServerRunner.new(EchoServerImpl)
+  server_port = server_runner.run
+  STDERR.puts 'start client'
+  _, client_pid = start_client('client_memory_usage_client.rb', server_port)
+
+  Process.wait(client_pid)
+
+  client_exit_code = $CHILD_STATUS
+  if client_exit_code != 0
+    raise "Getting memory usage was failed, exit code #{client_exit_code}"
+  end
+ensure
+  server_runner.stop
+end
+
+main

tools/run_tests/helper_scripts/run_ruby_end2end_tests.sh

@@ -28,4 +28,5 @@ ruby src/ruby/end2end/forking_client_driver.rb || EXIT_CODE=1
 ruby src/ruby/end2end/grpc_class_init_driver.rb || EXIT_CODE=1
 ruby src/ruby/end2end/multiple_killed_watching_threads_driver.rb || EXIT_CODE=1
 ruby src/ruby/end2end/load_grpc_with_gc_stress_driver.rb || EXIT_CODE=1
+ruby src/ruby/end2end/client_memory_usage_driver.rb || EXIT_CODE=1
 exit $EXIT_CODE