Pass ignore attribute to unsupported tests (#4360)

CHANGELOG.md

@@ -43,6 +43,9 @@
 * Fixed passing large arrays into Rust failing because of internal memory allocations invalidating the memory buffer.
   [#4353](https://github.com/rustwasm/wasm-bindgen/pull/4353)
 
+* Pass along an `ignore` attribute to `unsupported` tests.
+  [#4360](https://github.com/rustwasm/wasm-bindgen/pull/4360)
+
 --------------------------------------------------------------------------------
 
 ## [0.2.99](https://github.com/rustwasm/wasm-bindgen/compare/0.2.98...0.2.99)

crates/test-macro/src/lib.rs

@@ -80,7 +80,7 @@ pub fn wasm_bindgen_test(
         None => quote! { ::core::option::Option::None },
     };
 
-    let ignore = match ignore {
+    let ignore_par = match &ignore {
         Some(Some(lit)) => {
             quote! { ::core::option::Option::Some(::core::option::Option::Some(#lit)) }
         }
@@ -89,9 +89,9 @@ pub fn wasm_bindgen_test(
     };
 
     let test_body = if attributes.r#async {
-        quote! { cx.execute_async(test_name, #ident, #should_panic_par, #ignore); }
+        quote! { cx.execute_async(test_name, #ident, #should_panic_par, #ignore_par); }
     } else {
-        quote! { cx.execute_sync(test_name, #ident, #should_panic_par, #ignore); }
+        quote! { cx.execute_sync(test_name, #ident, #should_panic_par, #ignore_par); }
     };
 
     // We generate a `#[no_mangle]` with a known prefix so the test harness can
@@ -130,6 +130,18 @@ pub fn wasm_bindgen_test(
                 quote! { #[cfg_attr(not(all(target_arch = "wasm32", any(target_os = "unknown", target_os = "none"))), #should_panic)] }
             )
         }
+
+        if let Some(ignore) = ignore {
+            let ignore = if let Some(lit) = ignore {
+                quote! { ignore = #lit }
+            } else {
+                quote! { ignore }
+            };
+
+            tokens.extend(
+                quote! { #[cfg_attr(not(all(target_arch = "wasm32", any(target_os = "unknown", target_os = "none"))), #ignore)] }
+            )
+        }
     }
 
     tokens.extend(leading_tokens);