72     std::ostringstream localString;  in TEST()  local
74     std::cout.rdbuf(localString.rdbuf());  in TEST()
77     EXPECT_EQ(localString.str(), "Rx: 0a 0c 0e 19 e9 \n");  in TEST()
78     localString.str("");  in TEST()
79     localString.clear();  in TEST()
80     std::cerr << localString.str() << std::endl;  in TEST()
82     std::cout.rdbuf(localString.rdbuf());  in TEST()
85     EXPECT_EQ(localString.str(), "Tx: 0c 00 c8 0c ff \n");  in TEST()
91     std::ostringstream localString;  in TEST()  local
93     std::cout.rdbuf(localString.rdbuf());  in TEST()
95     EXPECT_EQ(localString.str(), "");  in TEST()
98     EXPECT_EQ(localString.str(), "");  in TEST()