From 3677be8ea48d33d2c30d7a7b2736182d807a5a0b Mon Sep 17 00:00:00 2001
From: zeroXbrock <2791467+zeroXbrock@users.noreply.github.com>
Date: Thu, 14 Nov 2024 16:03:25 -0800
Subject: [PATCH] remove errant panic, improve logs for bad config

---
 crates/core/src/generator/mod.rs | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/crates/core/src/generator/mod.rs b/crates/core/src/generator/mod.rs
index cfcd53f..9cc2662 100644
--- a/crates/core/src/generator/mod.rs
+++ b/crates/core/src/generator/mod.rs
@@ -58,7 +58,13 @@ where
 fn parse_map_key(fuzz: FuzzParam) -> Result<String> {
     if fuzz.param.is_none() && fuzz.value.is_none() {
         return Err(ContenderError::SpamError(
-            "fuzz must specify one of `param` or `value`",
+            "fuzz must specify either `param` or `value`",
+            None,
+        ));
+    }
+    if fuzz.param.is_some() && fuzz.value.is_some() {
+        return Err(ContenderError::SpamError(
+            "fuzz cannot specify both `param` and `value`; choose one per fuzz directive",
             None,
         ));
     }
@@ -74,7 +80,7 @@ fn parse_map_key(fuzz: FuzzParam) -> Result<String> {
         }
         VALUE_KEY.to_owned()
     } else {
-        panic!("this should never happen");
+        return Err(ContenderError::SpamError("this should never happen", None));
     };
 
     Ok(key)