test more cases of path validation

actix-router/src/resource.rs

@@ -967,7 +967,7 @@ impl ResourceDef {
                 _ => false,
             })
             .unwrap_or_else(|| {
-                panic!(r#"path "{}" contains malformed dynamic segment"#, pattern)
+                panic!(r#"pattern "{}" contains malformed dynamic segment"#, pattern)
             });
 
         let (mut param, mut unprocessed) = pattern.split_at(close_idx + 1);

actix-web-codegen/src/route.rs

@@ -102,6 +102,7 @@ impl Args {
             match arg {
                 NestedMeta::Lit(syn::Lit::Str(lit)) => match path {
                     None => {
+                        let _ = ResourceDef::new(lit.value());
                         path = Some(lit);
                     }
                     _ => {
@@ -114,7 +115,6 @@ impl Args {
                 NestedMeta::Meta(syn::Meta::NameValue(nv)) => {
                     if nv.path.is_ident("name") {
                         if let syn::Lit::Str(lit) = nv.lit {
-                            let _ = ResourceDef::new(lit.value());
                             resource_name = Some(lit);
                         } else {
                             return Err(syn::Error::new_spanned(

actix-web-codegen/tests/trybuild/route-malformed-path-fail.rs

@@ -1,7 +1,33 @@
-use actix_web_codegen::*;
+use actix_web_codegen::get;
 
-#[get("/one/{", other)]
-async fn one() -> String {
-    "Hello World!".to_owned()
+#[get("/{")]
+async fn zero() -> &'static str {
+    "malformed resource def"
 }
+
+#[get("/{foo")]
+async fn one() -> &'static str {
+    "malformed resource def"
+}
+
+#[get("/{}")]
+async fn two() -> &'static str {
+    "malformed resource def"
+}
+
+#[get("/*")]
+async fn three() -> &'static str {
+    "malformed resource def"
+}
+
+#[get("/{tail:\\d+}*")]
+async fn four() -> &'static str {
+    "malformed resource def"
+}
+
+#[get("/{a}/{b}/{c}/{d}/{e}/{f}/{g}/{h}/{i}/{j}/{k}/{l}/{m}/{n}/{o}/{p}/{q}")]
+async fn five() -> &'static str {
+    "malformed resource def"
+}
+
 fn main() {}

actix-web-codegen/tests/trybuild/route-malformed-path-fail.stderr

@@ -1,5 +1,42 @@
-error: Unknown attribute.
- --> $DIR/route-malformed-path-fail.rs:3:17
+error: custom attribute panicked
+ --> $DIR/route-malformed-path-fail.rs:3:1
   |
-3 | #[get("/one/{", other)]
-  |                 ^^^^^
+3 | #[get("/{")]
+  | ^^^^^^^^^^^^
+  |
+  = help: message: pattern "{" contains malformed dynamic segment
+
+error: custom attribute panicked
+ --> $DIR/route-malformed-path-fail.rs:8:1
+  |
+8 | #[get("/{foo")]
+  | ^^^^^^^^^^^^^^^
+  |
+  = help: message: pattern "{foo" contains malformed dynamic segment
+
+error: custom attribute panicked
+  --> $DIR/route-malformed-path-fail.rs:13:1
+   |
+13 | #[get("/{}")]
+   | ^^^^^^^^^^^^^
+   |
+   = help: message: Wrong path pattern: "/{}" regex parse error:
+               ((?s-m)^/(?P<>[^/]+))$
+                            ^
+           error: empty capture group name
+
+error: custom attribute panicked
+  --> $DIR/route-malformed-path-fail.rs:23:1
+   |
+23 | #[get("/{tail:\\d+}*")]
+   | ^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: message: custom regex is not supported for tail match
+
+error: custom attribute panicked
+  --> $DIR/route-malformed-path-fail.rs:28:1
+   |
+28 | #[get("/{a}/{b}/{c}/{d}/{e}/{f}/{g}/{h}/{i}/{j}/{k}/{l}/{m}/{n}/{o}/{p}/{q}")]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: message: Only 16 dynamic segments are allowed, provided: 17