548         assert_eq!(checked_str, "��");  in test_cstr_to_str()
564         assert_eq!(unchecked_str, "��");  in test_cstr_as_str_unchecked()
570         assert_eq!(format!("{}", hello_world), "hello, world!");  in test_cstr_display()
572         assert_eq!(format!("{}", non_printables), "\\x01\\x09\\x0a");  in test_cstr_display()
574         assert_eq!(format!("{}", non_ascii), "d\\xe9j\\xe0 vu");  in test_cstr_display()
576         assert_eq!(format!("{}", good_bytes), "\\xf0\\x9f\\xa6\\x80");  in test_cstr_display()
587         assert_eq!(format!("{}", cstr), ALL_ASCII_CHARS);  in test_cstr_display_all_bytes()
593         assert_eq!(format!("{:?}", hello_world), "\"hello, world!\"");  in test_cstr_debug()
595         assert_eq!(format!("{:?}", non_printables), "\"\\x01\\x09\\x0a\"");  in test_cstr_debug()
597         assert_eq!(format!("{:?}", non_ascii), "\"d\\xe9j\\xe0 vu\"");  in test_cstr_debug()
599         assert_eq!(format!("{:?}", good_bytes), "\"\\xf0\\x9f\\xa6\\x80\"");  in test_cstr_debug()
605         assert_eq!(format!("{}", hello_world), "hello, world!");  in test_bstr_display()
607         assert_eq!(format!("{}", escapes), "_\\t_\\n_\\r_\\_'_\"_");  in test_bstr_display()
609         assert_eq!(format!("{}", others), "\\x01");  in test_bstr_display()
611         assert_eq!(format!("{}", non_ascii), "d\\xe9j\\xe0 vu");  in test_bstr_display()
613         assert_eq!(format!("{}", good_bytes), "\\xf0\\x9f\\xa6\\x80");  in test_bstr_display()
619         assert_eq!(format!("{:?}", hello_world), "\"hello, world!\"");  in test_bstr_debug()
621         assert_eq!(format!("{:?}", escapes), "\"_\\t_\\n_\\r_\\\\_'_\\\"_\"");  in test_bstr_debug()
623         assert_eq!(format!("{:?}", others), "\"\\x01\"");  in test_bstr_debug()
625         assert_eq!(format!("{:?}", non_ascii), "\"d\\xe9j\\xe0 vu\"");  in test_bstr_debug()
627         assert_eq!(format!("{:?}", good_bytes), "\"\\xf0\\x9f\\xa6\\x80\"");  in test_bstr_debug()