Check for empty input

src/lib.rs

@@ -654,6 +654,12 @@ impl JSON {
     /// # assert!(parse_result.is_ok(), "Parse method example failed");
     /// ```
     pub fn parse(json: &str) -> JSONResult {
+        if json.len() == 0 {
+            return Err(ParseError::UnexpectedEndOfInput(format!(
+                "Empty input"
+            )))
+        }
+
         JSON::new(json).parse_value()
     }
 }

tests/error_tests.rs

@@ -26,12 +26,20 @@ fn bad_object_trailing_comma() {
 fn bad_json() {
     let res = JSON::parse(r#"5eq"#);
     assert!(res.is_err());
-    println!("{:#?}", res);
+}
+
+#[test]
+fn empty_json() {
+    let res: JSONResult = JSON::parse("");
+    assert_eq!(
+        res,
+        Err(ParseError::UnexpectedEndOfInput(String::from("Empty input")))
+    )
 }
 
 #[test]
 #[should_panic]
 fn invalid_unwrap() {
     let wrapped = JSONValue::from(5.2f64);
-    let invalid: String = wrapped.unwrap();
+    let _: String = wrapped.unwrap();
 }