From b2f318323ffed782b90237e38015d65638848d3d Mon Sep 17 00:00:00 2001
From: Scott Worley <scottworley@scottworley.com>
Date: Thu, 3 Oct 2024 14:09:41 -0700
Subject: [PATCH] Invalid/unknown commands are errors

---
 src/lib.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index af582d4..d974461 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -17,6 +17,11 @@ impl Config {
                 .map_err(|e| std::io::Error::new(std::io::ErrorKind::InvalidInput, e))?;
         } else if let Some(col) = cmd.strip_prefix("col ") {
             self.static_columns.push(col.to_owned());
+        } else {
+            return Err(std::io::Error::new(
+                std::io::ErrorKind::InvalidInput,
+                format!("Unknown command: {cmd}"),
+            ));
         }
         Ok(())
     }
@@ -518,6 +523,10 @@ mod tests {
             vec!["foo".to_owned()]
         );
 
+        let bad_command = read_config(&b"!no such command"[..]);
+        assert!(bad_command.is_err());
+        assert!(format!("{bad_command:?}").contains("Unknown command"));
+
         let bad_num = read_config(&b"!col_threshold foo"[..]);
         assert!(bad_num.is_err());
         assert!(format!("{bad_num:?}").contains("Parse"));
-- 
2.44.1