From 96e423ff31701a782560ac25a940b6467c0adea0 Mon Sep 17 00:00:00 2001
From: Sunli <scott_s829@163.com>
Date: Fri, 6 May 2022 09:28:57 +0800
Subject: [PATCH] Fixes #911

---
 src/registry/mod.rs     | 6 +++---
 src/validation/utils.rs | 6 +++++-
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/registry/mod.rs b/src/registry/mod.rs
index 837ba533..5174f1ff 100644
--- a/src/registry/mod.rs
+++ b/src/registry/mod.rs
@@ -33,8 +33,8 @@ pub enum MetaTypeName<'a> {
     Named(&'a str),
 }
 
-impl<'a> std::fmt::Display for MetaTypeName<'a> {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+impl<'a> Display for MetaTypeName<'a> {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
         match self {
             MetaTypeName::Named(name) => write!(f, "{}", name),
             MetaTypeName::NonNull(name) => write!(f, "{}!", name),
@@ -388,7 +388,7 @@ impl MetaType {
 pub struct MetaDirective {
     pub name: &'static str,
     pub description: Option<&'static str>,
-    pub locations: Vec<model::__DirectiveLocation>,
+    pub locations: Vec<__DirectiveLocation>,
     pub args: IndexMap<String, MetaInputValue>,
     pub is_repeatable: bool,
     pub visible: Option<MetaVisibleFn>,
diff --git a/src/validation/utils.rs b/src/validation/utils.rs
index 68453e0f..8a3804e3 100644
--- a/src/validation/utils.rs
+++ b/src/validation/utils.rs
@@ -69,7 +69,11 @@ pub fn is_valid_input_value(
                 return None;
             }
 
-            match registry.types.get(type_name).unwrap() {
+            match registry
+                .types
+                .get(type_name)
+                .unwrap_or_else(|| panic!("Type `{}` not defined", type_name))
+            {
                 registry::MetaType::Scalar { is_valid, .. } => {
                     if is_valid(&value) {
                         None