291     message_port_ = std::make_unique<SimpleMessagePort>();  in SetUp()
294         &client_, environment_.get(), message_port_.get(),  in SetUp()
302   std::unique_ptr<SimpleMessagePort> message_port_;  member in openscreen::cast::ReceiverSessionTest
334   message_port_->ReceiveMessage(kValidOfferMessage);  in TEST_F()
336   const auto& messages = message_port_->posted_messages();  in TEST_F()
368       &client_, environment_.get(), message_port_.get(),  in TEST_F()
391   message_port_->ReceiveMessage(kValidOfferMessage);  in TEST_F()
409   ReceiverSession session(&client_, environment_.get(), message_port_.get(),  in TEST_F()
419   message_port_->ReceiveMessage(kValidOfferMessage);  in TEST_F()
421   const auto& messages = message_port_->posted_messages();  in TEST_F()
474   message_port_->ReceiveMessage(kNoAudioOfferMessage);  in TEST_F()
475   const auto& messages = message_port_->posted_messages();  in TEST_F()
492   message_port_->ReceiveMessage(kInvalidCodecOfferMessage);  in TEST_F()
493   const auto& messages = message_port_->posted_messages();  in TEST_F()
511   message_port_->ReceiveMessage(kNoVideoOfferMessage);  in TEST_F()
512   const auto& messages = message_port_->posted_messages();  in TEST_F()
529   message_port_->ReceiveMessage(kNoAudioOrVideoOfferMessage);  in TEST_F()
530   const auto& messages = message_port_->posted_messages();  in TEST_F()
543   message_port_->ReceiveMessage(kInvalidJsonOfferMessage);  in TEST_F()
550   message_port_->ReceiveMessage(kMissingSeqNumOfferMessage);  in TEST_F()
558   message_port_->ReceiveMessage(kMissingMandatoryFieldOfferMessage);  in TEST_F()
559   const auto& messages = message_port_->posted_messages();  in TEST_F()
569   message_port_->ReceiveMessage(kValidJsonInvalidFormatOfferMessage);  in TEST_F()
570   const auto& messages = message_port_->posted_messages();  in TEST_F()
579   message_port_->ReceiveMessage(kNullJsonOfferMessage);  in TEST_F()
584   message_port_->ReceiveMessage(kInvalidSequenceNumberMessage);  in TEST_F()
589   message_port_->ReceiveMessage(kUnknownTypeMessage);  in TEST_F()
594   message_port_->ReceiveMessage(kInvalidTypeMessage);  in TEST_F()
598   message_port_->ReceiveError(Error(Error::Code::kUnknownError));  in TEST_F()
612   message_port_->ReceiveMessage(kNoAudioOfferMessage);  in TEST_F()
613   message_port_->ReceiveMessage(kValidOfferMessage);  in TEST_F()
622   message_port_->ReceiveMessage(kValidOfferMessage);  in TEST_F()
623   const auto& messages = message_port_->posted_messages();  in TEST_F()