From f47f80571dcc68e382f48b2610c60a926d7dc274 Mon Sep 17 00:00:00 2001
From: Matt Keeter <matt.j.keeter@gmail.com>
Date: Tue, 20 Feb 2024 09:20:19 -0500
Subject: [PATCH] Also print a diff

---
 fidget/src/render/mod.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fidget/src/render/mod.rs b/fidget/src/render/mod.rs
index 12e5efd8..2470a13f 100644
--- a/fidget/src/render/mod.rs
+++ b/fidget/src/render/mod.rs
@@ -42,6 +42,10 @@ mod test {
         if img_str != expected {
             println!("image mismatch detected!");
             println!("Expected:\n{expected}\nGot:\n{img_str}");
+            println!("Diff:");
+            for (a, b) in img_str.chars().zip(expected.chars()) {
+                print!("{}", if a != b { '!' } else { a });
+            }
             panic!("image mismatch");
         }
     }