Add regression test for doc alias matching vs equivalently matched items

tests/rustdoc-js/doc-alias-after-other-items.js

@@ -0,0 +1,38 @@
+// exact-check
+
+// Checking that doc aliases are always listed after items with equivalent matching.
+
+const EXPECTED = [
+    {
+        'query': 'coo',
+        'others': [
+            {
+                'path': 'doc_alias_after_other_items',
+                'name': 'Foo',
+                'href': '../doc_alias_after_other_items/struct.Foo.html',
+            },
+            {
+                'path': 'doc_alias_after_other_items',
+                'name': 'bar',
+                'alias': 'Boo',
+                'is_alias': true
+            },
+        ],
+    },
+    {
+        'query': '"confiture"',
+        'others': [
+            {
+                'path': 'doc_alias_after_other_items',
+                'name': 'Confiture',
+                'href': '../doc_alias_after_other_items/struct.Confiture.html',
+            },
+            {
+                'path': 'doc_alias_after_other_items',
+                'name': 'this_is_a_long_name',
+                'alias': 'Confiture',
+                'is_alias': true
+            },
+        ],
+    },
+];

tests/rustdoc-js/doc-alias-after-other-items.rs

@@ -0,0 +1,9 @@
+pub struct Foo;
+
+#[doc(alias = "Boo")]
+pub fn bar() {}
+
+pub struct Confiture;
+
+#[doc(alias = "Confiture")]
+pub fn this_is_a_long_name() {}