Add test for wildcard selector (doesn't work :()

crates/ink/ir/src/ir/attrs.rs

@@ -1084,6 +1084,19 @@ mod tests {
         );
     }
 
+    #[test]
+    fn wildcard_selector_works() {
+        assert_attribute_try_from(
+            syn::parse_quote! {
+                #[ink(selector = _)]
+            },
+            Ok(test::Attribute::Ink(vec![AttributeArg::Selector(
+                SelectorOrWildcard::Wildcard
+            )])),
+        );
+    }
+
+
     #[test]
     fn selector_negative_number() {
         assert_attribute_try_from(