From a59e025098b9ef3e5f1ca29cede58ff9bc50f171 Mon Sep 17 00:00:00 2001
From: davidsemakula <hello@davidsemakula.com>
Date: Fri, 8 Mar 2024 16:44:01 +0300
Subject: [PATCH 1/2] Restrict syntax for setting ink! e2e test node to auto

---
 crates/e2e/macro/src/config.rs | 26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)

diff --git a/crates/e2e/macro/src/config.rs b/crates/e2e/macro/src/config.rs
index b5d561c3480..182549edeef 100644
--- a/crates/e2e/macro/src/config.rs
+++ b/crates/e2e/macro/src/config.rs
@@ -40,6 +40,7 @@ impl Default for Backend {
 pub enum Node {
     /// A fresh node instance will be spawned for the lifetime of the test.
     #[darling(word)]
+    #[darling(skip)]
     Auto,
     /// The test will run against an already running node at the supplied URL.
     Url(String),
@@ -137,7 +138,7 @@ mod tests {
 
     #[test]
     #[should_panic(expected = "ErrorUnknownField")]
-    fn config_works_backend_runtime_only_default_not_allowed() {
+    fn config_backend_runtime_only_default_not_allowed() {
         let input = quote! {
             backend(runtime_only(default)),
         };
@@ -164,7 +165,7 @@ mod tests {
     }
 
     #[test]
-    fn config_works_backend_node_default_auto() {
+    fn config_works_backend_node() {
         let input = quote! {
             backend(node),
         };
@@ -172,15 +173,6 @@ mod tests {
             E2EConfig::from_list(&NestedMeta::parse_meta_list(input).unwrap()).unwrap();
 
         assert_eq!(config.backend(), Backend::Node(Node::Auto));
-    }
-
-    #[test]
-    fn config_works_backend_node_auto() {
-        let input = quote! {
-            backend(node(auto)),
-        };
-        let config =
-            E2EConfig::from_list(&NestedMeta::parse_meta_list(input).unwrap()).unwrap();
 
         match config.backend() {
             Backend::Node(node_config) => {
@@ -204,6 +196,18 @@ mod tests {
         }
     }
 
+    #[test]
+    #[should_panic(expected = "ErrorUnknownField")]
+    fn config_backend_node_auto_not_allowed() {
+        let input = quote! {
+            backend(node(auto)),
+        };
+        let config =
+            E2EConfig::from_list(&NestedMeta::parse_meta_list(input).unwrap()).unwrap();
+
+        assert_eq!(config.backend(), Backend::Node(Node::Auto));
+    }
+
     #[test]
     fn config_works_backend_node_url() {
         let input = quote! {

From 63ffa595c3b5ffa80c9b76a871291efafaf64f8a Mon Sep 17 00:00:00 2001
From: davidsemakula <hello@davidsemakula.com>
Date: Fri, 8 Mar 2024 17:24:02 +0300
Subject: [PATCH 2/2] Add changelog entry

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 69f847e66e4..98fdc490bd3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 - Use name-only syntax for `anonymous` ink! event item configuration argument - [#2140](https://github.com/paritytech/ink/pull/2140)
 - Restrict syntax for setting default ink! e2e test runtime-only emulator - [#2143](https://github.com/paritytech/ink/pull/2143)
+- Restrict syntax for setting ink! e2e test node to auto - [#2146](https://github.com/paritytech/ink/pull/2146)
 
 ## Version 5.0.0-rc.2