Add tests for CStr(ing) ser/de

test_suite/tests/test_ser.rs

@@ -6,6 +6,7 @@ use std::net;
 use std::path::{Path, PathBuf};
 use std::str;
 use std::time::Duration;
+use std::ffi::CString;
 
 extern crate serde;
 
@@ -389,6 +390,16 @@ declare_tests! {
             Token::Str("/usr/local/lib"),
         ],
     }
+    test_cstring {
+        CString::new("abc").unwrap() => &[
+            Token::Bytes(b"abc"),
+        ],
+    }
+    test_cstr {
+        (&*CString::new("abc").unwrap()) => &[
+            Token::Bytes(b"abc"),
+        ],
+    }
 }