From f22920828085e6e0c7ba74bbaba13f01d9b8e93f Mon Sep 17 00:00:00 2001
From: Timothy Warren <tim@timshomepage.net>
Date: Fri, 16 Apr 2021 23:04:57 -0400
Subject: [PATCH] Check for empty input

---
 src/lib.rs           |  6 ++++++
 tests/error_tests.rs | 12 ++++++++++--
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 95e673e..0d1d5e8 100644
--- a/src/lib.rs
+++ b/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()
     }
 }
diff --git a/tests/error_tests.rs b/tests/error_tests.rs
index b061960..063b7f1 100644
--- a/tests/error_tests.rs
+++ b/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();
 }