[ISSUE #55]🎨Fix CheetahString Serialize empty make Deserialize error🚀 (#56)

Author: mxsm

src/cheetah_string.rs

@@ -7,7 +7,7 @@ use std::ops::Deref;
 use std::str::FromStr;
 use std::sync::Arc;
 
-const EMPTY_STRING: &str = "";
+pub const EMPTY_STRING: &str = "";
 
 #[derive(Clone)]
 #[repr(transparent)]

src/serde.rs

@@ -1,4 +1,4 @@
-use crate::cheetah_string::InnerString;
+use crate::cheetah_string::{InnerString, EMPTY_STRING};
 use crate::CheetahString;
 use serde::de::{Error, Unexpected, Visitor};
 use serde::{Deserialize, Deserializer, Serialize, Serializer};
@@ -14,7 +14,7 @@ impl Serialize for CheetahString {
             InnerString::ArcVecString(s) => serializer.serialize_bytes(s),
             #[cfg(feature = "bytes")]
             InnerString::Bytes(bytes) => serializer.serialize_bytes(bytes.as_ref()),
-            InnerString::Empty => serializer.serialize_bytes(&[]),
+            InnerString::Empty => serializer.serialize_str(EMPTY_STRING),
         }
     }
 }