199   std::string random_data;  in TEST()  local
200   random_data.reserve(4096);  in TEST()
201   generate_n(back_inserter(random_data), 4096, []() { return rand() % 256; });  in TEST()
208   const std::string src_content = random_data;  in TEST()
218   const std::string tgt_content = random_data + "extra contents";  in TEST()
292   std::string random_data;  in TEST()  local
293   random_data.reserve(4096);  in TEST()
294   generate_n(back_inserter(random_data), 4096, []() { return rand() % 256; });  in TEST()
301   const std::string src_content = random_data;  in TEST()
311   const std::string tgt_content = random_data + "abcdefg";  in TEST()
931   std::string random_data;  in TEST()  local
932   random_data.reserve(4096 * 20);  in TEST()
933   generate_n(back_inserter(random_data), 4096 * 20, []() { return rand() % 256; });  in TEST()
940                           random_data);  in TEST()
974   std::string random_data;  in TEST()  local
975   random_data.reserve(4096 * 20);  in TEST()
976   generate_n(back_inserter(random_data), 4096 * 20, []() { return rand() % 256; });  in TEST()
982   construct_deflate_entry({ { "a", 0, 10 }, { "b", 10, 5 } }, &tgt_writer, random_data);  in TEST()
991   construct_deflate_entry({ { "a", 1, 10 } }, &src_writer, random_data);  in TEST()