Extend rustdoc macro-generated-macro test

Author: dtolnay

src/test/rustdoc/macro-generated-macro.rs

@@ -1,14 +1,21 @@
-macro_rules! outer {
-    ($($matcher:tt)*) => {
+macro_rules! make_macro {
+    ($macro_name:ident $($matcher:tt)*) => {
         #[macro_export]
-        macro_rules! inner {
+        macro_rules! $macro_name {
             (<= $($matcher)* =>) => {};
         }
     }
 }
 
-// @has macro_generated_macro/macro.inner.html //pre 'macro_rules! inner {'
+// @has macro_generated_macro/macro.interpolations.html //pre 'macro_rules! interpolations {'
 // @has - //pre '(<= type $($i : ident) :: * + $e : expr =>) => { ... };'
-outer!(type $($i:ident)::* + $e:expr);
+make_macro!(interpolations type $($i:ident)::* + $e:expr);
+interpolations!(<= type foo::bar + x.sort() =>);
 
-inner!(<= type foo::bar + x.sort() =>);
+// @has macro_generated_macro/macro.attributes.html //pre 'macro_rules! attributes {'
+// @has - //pre '(<= #! [no_std] #[inline] =>) => { ... };'
+make_macro!(attributes #![no_std] #[inline]);
+
+// @has macro_generated_macro/macro.groups.html //pre 'macro_rules! groups {'
+// @has - //pre '(<= fn {} () { foo [0] } =>) => { ... };'
+make_macro!(groups fn {}() {foo[0]});