From 1ac8dc51bc379136cbcba737e63ba619f9524269 Mon Sep 17 00:00:00 2001
From: blyxyas <blyxyas@gmail.com>
Date: Wed, 12 Apr 2023 20:17:26 +0200
Subject: [PATCH] Compact emmited lint

---
 clippy_lints/src/items_after_test_module.rs | 33 +++++++++++----------
 tests/ui/items_after_test_module.rs         |  3 +-
 tests/ui/items_after_test_module.stderr     | 26 ++++++++--------
 3 files changed, 30 insertions(+), 32 deletions(-)

diff --git a/clippy_lints/src/items_after_test_module.rs b/clippy_lints/src/items_after_test_module.rs
index 9d949a44c02..52d716feea0 100644
--- a/clippy_lints/src/items_after_test_module.rs
+++ b/clippy_lints/src/items_after_test_module.rs
@@ -3,7 +3,7 @@ use rustc_hir::{HirId, ItemId, ItemKind, Mod};
 use rustc_lint::{LateContext, LateLintPass, LintContext};
 use rustc_middle::lint::in_external_macro;
 use rustc_session::{declare_lint_pass, declare_tool_lint};
-use rustc_span::sym;
+use rustc_span::{sym, Span};
 
 declare_clippy_lint! {
     /// ### What it does
@@ -43,38 +43,39 @@ declare_lint_pass!(ItemsAfterTestModule => [ITEMS_AFTER_TEST_MODULE]);
 impl LateLintPass<'_> for ItemsAfterTestModule {
     fn check_mod(&mut self, cx: &LateContext<'_>, _: &Mod<'_>, _: HirId) {
         let mut was_test_mod_visited = false;
-        let mut test_mod_hash: Option<u128> = None;
+        let mut test_mod_span: Option<Span> = None;
 
         let hir = cx.tcx.hir();
         let items = hir.items().collect::<Vec<ItemId>>();
 
-        for itid in &items {
+        for (i, itid) in items.iter().enumerate() {
             let item = hir.item(*itid);
 
             if_chain! {
             if was_test_mod_visited;
+            if i == (items.len() - 3 /* Weird magic number (HIR-translation behaviour) */);
             if cx.sess().source_map().lookup_char_pos(item.span.lo()).file.name_hash
-            == test_mod_hash.unwrap(); // Will never fail
-            if !matches!(item.kind, ItemKind::Mod(_) | ItemKind::Macro(_, _));
+            == cx.sess().source_map().lookup_char_pos(test_mod_span.unwrap().lo()).file.name_hash; // Will never fail
+            if !matches!(item.kind, ItemKind::Mod(_));
             if !is_in_cfg_test(cx.tcx, itid.hir_id()); // The item isn't in the testing module itself
-
             if !in_external_macro(cx.sess(), item.span);
+
             then {
-                span_lint_and_help(cx, ITEMS_AFTER_TEST_MODULE, item.span, "an item was found after the testing module", None, "move the item to before the testing module was defined");
+                span_lint_and_help(cx, ITEMS_AFTER_TEST_MODULE, test_mod_span.unwrap().with_hi(item.span.hi()), "items were found after the testing module", None, "move the items to before the testing module was defined");
             }};
 
             if matches!(item.kind, ItemKind::Mod(_)) {
                 for attr in cx.tcx.get_attrs(item.owner_id.to_def_id(), sym::cfg) {
                     if_chain! {
-                                if attr.has_name(sym::cfg);
-                                if let Some(mitems) = attr.meta_item_list();
-                                if let [mitem] = &*mitems;
-                                if mitem.has_name(sym::test);
-                                then {
-                                    was_test_mod_visited = true;
-                    test_mod_hash = Some(cx.sess().source_map().lookup_char_pos(item.span.lo()).file.name_hash);
-                                }
-                            }
+                        if attr.has_name(sym::cfg);
+                        if let Some(mitems) = attr.meta_item_list();
+                        if let [mitem] = &*mitems;
+                        if mitem.has_name(sym::test);
+                        then {
+                            was_test_mod_visited = true;
+                            test_mod_span = Some(item.span);
+                        }
+                    }
                 }
             }
         }
diff --git a/tests/ui/items_after_test_module.rs b/tests/ui/items_after_test_module.rs
index 735c06e51ff..5136b2557ec 100644
--- a/tests/ui/items_after_test_module.rs
+++ b/tests/ui/items_after_test_module.rs
@@ -1,4 +1,4 @@
-// compile-flags: --test
+//@compile-flags: --test
 #![allow(unused)]
 #![warn(clippy::items_after_test_module)]
 
@@ -18,7 +18,6 @@ mod tests {
 fn should_lint() {}
 
 const SHOULD_ALSO_LINT: usize = 1;
-
 macro_rules! should_not_lint {
     () => {};
 }
diff --git a/tests/ui/items_after_test_module.stderr b/tests/ui/items_after_test_module.stderr
index 53ca4746476..8f1616dabc1 100644
--- a/tests/ui/items_after_test_module.stderr
+++ b/tests/ui/items_after_test_module.stderr
@@ -1,19 +1,17 @@
-error: an item was found after the testing module
-  --> $DIR/items_after_test_module.rs:18:1
+error: items were found after the testing module
+  --> $DIR/items_after_test_module.rs:13:1
    |
-LL | fn should_lint() {}
-   | ^^^^^^^^^^^^^^^^^^^
+LL | / mod tests {
+LL | |     #[test]
+LL | |     fn hi() {}
+LL | | }
+...  |
+LL | |     () => {};
+LL | | }
+   | |_^
    |
-   = help: move the item to before the testing module was defined
+   = help: move the items to before the testing module was defined
    = note: `-D clippy::items-after-test-module` implied by `-D warnings`
 
-error: an item was found after the testing module
-  --> $DIR/items_after_test_module.rs:20:1
-   |
-LL | const SHOULD_ALSO_LINT: usize = 1;
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = help: move the item to before the testing module was defined
-
-error: aborting due to 2 previous errors
+error: aborting due to previous error