From 6a44d0af2baa97db50250cd8bbd72c1ff25e4f4a Mon Sep 17 00:00:00 2001
From: Lambda <csgl@xiretza.xyz>
Date: Sun, 20 Oct 2024 18:50:05 +0000
Subject: [PATCH] Fix u8_slice_to_hex()

For bytes <0x10, this would omit the leading zero.
---
 src/utils.rs | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/src/utils.rs b/src/utils.rs
index e5d923d5..1eca4b4b 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -374,14 +374,14 @@ pub(crate) fn curlify<T>(req: &http::Request<T>) -> Option<String> {
 /// whitespace or commas do not appear in the output).
 pub(crate) fn u8_slice_to_hex(slice: &[u8]) -> String {
     slice.iter().fold(String::new(), |mut acc, x| {
-        write!(acc, "{x:X}").expect("in-memory write should succeed");
+        write!(acc, "{x:02X}").expect("in-memory write should succeed");
         acc
     })
 }
 
 #[cfg(test)]
 mod tests {
-    use crate::utils::dbg_truncate_str;
+    use crate::utils::{dbg_truncate_str, u8_slice_to_hex};
 
     #[test]
     fn test_truncate_str() {
@@ -395,4 +395,20 @@ mod tests {
         assert_eq!(dbg_truncate_str(ok_hand, ok_hand.len() - 1), "👌🏽");
         assert_eq!(dbg_truncate_str(ok_hand, ok_hand.len()), "👌🏽");
     }
+
+    #[test]
+    fn test_slice_to_hex() {
+        assert_eq!(u8_slice_to_hex(&[]), "");
+        assert_eq!(u8_slice_to_hex(&[0]), "00");
+        assert_eq!(u8_slice_to_hex(&[0xFF]), "FF");
+        assert_eq!(u8_slice_to_hex(&[1, 2, 3, 4]), "01020304");
+        assert_eq!(
+            u8_slice_to_hex(&[0x42; 100]),
+            "4242424242424242424242424242424242424242\
+             4242424242424242424242424242424242424242\
+             4242424242424242424242424242424242424242\
+             4242424242424242424242424242424242424242\
+             4242424242424242424242424242424242424242"
+        );
+    }
 }