From d5d7c855b0c8f4fa1db4e9dee6b22dc873ca25e8 Mon Sep 17 00:00:00 2001
From: Colin Davidson <colin@pentaquine.com>
Date: Sun, 17 Jan 2016 12:13:45 -0800
Subject: [PATCH] Add tests for UpperHex and LowerHex

---
 src/bigint.rs | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/bigint.rs b/src/bigint.rs
index 4acc2ac..6255070 100644
--- a/src/bigint.rs
+++ b/src/bigint.rs
@@ -3723,6 +3723,24 @@ mod biguint_tests {
         }
     }
 
+    #[test]
+    fn test_upper_hex() {
+        let a = BigUint::parse_bytes(b"A", 16).unwrap();
+        let hello = BigUint::parse_bytes("22405534230753963835153736737".as_bytes(), 10).unwrap();
+
+        assert_eq!(format!("{:x}", a), "a");
+        assert_eq!(format!("{:x}", hello), "48656c6c6f20776f726c6421");
+    }
+
+    #[test]
+    fn test_lower_hex() {
+        let a = BigUint::parse_bytes(b"A", 16).unwrap();
+        let hello = BigUint::parse_bytes("22405534230753963835153736737".as_bytes(), 10).unwrap();
+
+        assert_eq!(format!("{:X}", a), "A");
+        assert_eq!(format!("{:X}", hello), "48656C6C6F20776F726C6421");
+    }
+
     #[test]
     fn test_factor() {
         fn factor(n: usize) -> BigUint {