From 14ba619bc4eede4b69644bf53fdea253fa416a87 Mon Sep 17 00:00:00 2001
From: Jonas Zeunert <jonas@zeunert.org>
Date: Sun, 18 Feb 2024 17:30:41 +0100
Subject: [PATCH] Impl: Check for wrong input characters

---
 src/main.rs | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 6d8c46a..817fe66 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,7 +1,5 @@
 use clap::Parser;
 
-use regex::Regex;
-
 #[derive(Parser)]
 #[command(version, about, long_about = None)]
 struct Cli {
@@ -87,7 +85,12 @@ fn parse_playfield(field: &String, field_size: usize) -> Playfield {
                 continue;
             }
 
-            field.value = Some(char_field.parse().unwrap());
+            field.value = Some(char_field.parse().unwrap_or_else(|char_field| {
+                panic!(
+                    "Input must contain only digits followed by space. Disallowed character: {}",
+                    char_field
+                )
+            }));
         }
     }
 
@@ -132,7 +135,7 @@ mod tests {
     }
 
     #[test]
-    #[should_panic(expected = "Input must have dimension of size 2x2")]
+    #[should_panic(expected = "Input must have dimension of size 3x3")]
     fn test_parse_field_too_short_input() {
         let input = "1 2 3";
         let field_size = 3;