add a trybuild test to fail lowercase methods

actix-web-codegen/tests/trybuild.rs

@@ -9,9 +9,11 @@ fn compile_macros() {
     t.pass("tests/trybuild/route-ok.rs");
     t.compile_fail("tests/trybuild/route-missing-method-fail.rs");
     t.compile_fail("tests/trybuild/route-duplicate-method-fail.rs");
-    t.pass("tests/trybuild/route-custom-method.rs");
     t.compile_fail("tests/trybuild/route-malformed-path-fail.rs");
 
+    t.pass("tests/trybuild/route-custom-method.rs");
+    t.compile_fail("tests/trybuild/route-custom-lowercase.rs");
+
     t.pass("tests/trybuild/routes-ok.rs");
     t.compile_fail("tests/trybuild/routes-missing-method-fail.rs");
     t.compile_fail("tests/trybuild/routes-missing-args-fail.rs");

actix-web-codegen/tests/trybuild/route-custom-lowercase.rs

@@ -0,0 +1,19 @@
+use actix_web_codegen::*;
+use actix_web::http::Method;
+use std::str::FromStr;
+
+#[route("/", method = "hello")]
+async fn index() -> String {
+    "Hello World!".to_owned()
+}
+
+#[actix_web::main]
+async fn main() {
+    use actix_web::App;
+
+    let srv = actix_test::start(|| App::new().service(index));
+
+    let request = srv.request(Method::from_str("hello").unwrap(), srv.url("/"));
+    let response = request.send().await.unwrap();
+    assert!(response.status().is_success());
+}

actix-web-codegen/tests/trybuild/route-custom-lowercase.stderr

@@ -0,0 +1,19 @@
+error: HTTP method must be uppercase: `hello`
+ --> tests/trybuild/route-custom-lowercase.rs:5:23
+  |
+5 | #[route("/", method = "hello")]
+  |                       ^^^^^^^
+
+error[E0277]: the trait bound `fn() -> impl std::future::Future<Output = String> {index}: HttpServiceFactory` is not satisfied
+  --> tests/trybuild/route-custom-lowercase.rs:14:55
+   |
+14 |     let srv = actix_test::start(|| App::new().service(index));
+   |                                               ------- ^^^^^ the trait `HttpServiceFactory` is not implemented for fn item `fn() -> impl std::future::Future<Output = String> {index}`
+   |                                               |
+   |                                               required by a bound introduced by this call
+   |
+note: required by a bound in `App::<T>::service`
+  --> $WORKSPACE/actix-web/src/app.rs
+   |
+   |         F: HttpServiceFactory + 'static,
+   |            ^^^^^^^^^^^^^^^^^^ required by this bound in `App::<T>::service`