Improve issue-112852 tests

Author: GuillaumeGomez

tests/rustdoc-json/impls/issue-112852-dangling-trait-impl-id-2.rs

@@ -1,12 +1,15 @@
 #![feature(no_core)]
 #![no_core]
 
+// @count "$.index[*][?(@.inner.impl)]" 1
 // @!has "$.index[*][?(@.name == 'HiddenPubStruct')]"
-// @!has "$.index[*][?(@.inner.impl)]"
+// @has "$.index[*][?(@.name == 'NotHiddenPubStruct')]"
 // @has "$.index[*][?(@.name=='PubTrait')]"
 pub trait PubTrait {}
 
 #[doc(hidden)]
 pub struct HiddenPubStruct;
+pub struct NotHiddenPubStruct;
 
 impl PubTrait for HiddenPubStruct {}
+impl PubTrait for NotHiddenPubStruct {}

tests/rustdoc-json/impls/issue-112852-dangling-trait-impl-id.rs

@@ -1,8 +1,9 @@
 #![feature(no_core)]
 #![no_core]
 
+// @count "$.index[*][?(@.inner.impl)]" 1
 // @!has "$.index[*][?(@.name == 'HiddenPubStruct')]"
-// @!has "$.index[*][?(@.inner.impl)]"
+// @has "$.index[*][?(@.name == 'NotHiddenPubStruct')]"
 // @has "$.index[*][?(@.name=='PubTrait')]"
 pub trait PubTrait {}
 
@@ -12,3 +13,9 @@ pub mod hidden {
 
     impl crate::PubTrait for HiddenPubStruct {}
 }
+
+pub mod not_hidden {
+    pub struct NotHiddenPubStruct;
+
+    impl crate::PubTrait for NotHiddenPubStruct {}
+}