Add some more attribute ide tests

crates/hir/src/semantics.rs

@@ -16,7 +16,6 @@ use itertools::Itertools;
 use rustc_hash::{FxHashMap, FxHashSet};
 use smallvec::{smallvec, SmallVec};
 use syntax::{
-    algo::find_node_at_offset,
     ast::{self, GenericParamsOwner, LoopBodyOwner},
     match_ast, AstNode, SyntaxNode, SyntaxNodePtr, SyntaxToken, TextRange, TextSize,
 };
@@ -241,10 +240,6 @@ impl<'db, DB: HirDatabase> Semantics<'db, DB> {
         node: &SyntaxNode,
         offset: TextSize,
     ) -> Option<N> {
-        if let Some(it) = find_node_at_offset(node, offset) {
-            return Some(it);
-        }
-
         self.imp.descend_node_at_offset(node, offset).flatten().find_map(N::cast)
     }
 

crates/ide/src/expand_macro.rs

@@ -31,6 +31,7 @@ pub(crate) fn expand_macro(db: &RootDatabase, position: FilePosition) -> Option<
         SyntaxKind::IDENT => 1,
         _ => 0,
     })?;
+
     let descended = sema.descend_into_macros(tok.clone());
     if let Some(attr) = descended.ancestors().find_map(ast::Attr::cast) {
         if let Some((path, tt)) = attr.as_simple_call() {
@@ -45,6 +46,9 @@ pub(crate) fn expand_macro(db: &RootDatabase, position: FilePosition) -> Option<
             }
         }
     }
+
+    // FIXME: Intermix attribute and bang! expansions
+    // currently we only recursively expand one of the two types
     let mut expanded = None;
     let mut name = None;
     for node in tok.ancestors() {

crates/ide/src/hover.rs

@@ -1661,6 +1661,28 @@ id! {
         );
     }
 
+    #[test]
+    fn test_hover_through_attr() {
+        check(
+            r#"
+//- proc_macros: identity
+#[proc_macros::identity]
+fn foo$0() {}
+"#,
+            expect![[r#"
+                *foo*
+
+                ```rust
+                test
+                ```
+
+                ```rust
+                fn foo()
+                ```
+            "#]],
+        );
+    }
+
     #[test]
     fn test_hover_through_expr_in_macro() {
         check(

crates/ide/src/references.rs

@@ -1507,4 +1507,23 @@ fn f() {
             "#]],
         )
     }
+
+    #[test]
+    fn attr_expanded() {
+        check(
+            r#"
+//- proc_macros: identity
+
+#[proc_macros::identity]
+fn func$0() {
+    func();
+}
+"#,
+            expect![[r#"
+                func Function FileId(0) 26..51 29..33
+
+                FileId(0) 42..46
+            "#]],
+        )
+    }
 }

crates/ide/src/rename.rs

@@ -1880,4 +1880,26 @@ fn main() { f$0()  }
             "error: No identifier available to rename",
         )
     }
+
+    #[test]
+    fn attributed_item() {
+        check(
+            "function",
+            r#"
+//- proc_macros: identity
+
+#[proc_macros::identity]
+fn func$0() {
+    func();
+}
+"#,
+            r#"
+
+#[proc_macros::identity]
+fn function() {
+    function();
+}
+"#,
+        )
+    }
 }

crates/ide/src/runnables.rs

@@ -1737,6 +1737,88 @@ fn t1() {}
         );
     }
 
+    #[test]
+    fn attributed_module() {
+        check(
+            r#"
+//- proc_macros: identity
+//- /lib.rs
+$0
+#[proc_macros::identity]
+mod module {
+    #[test]
+    fn t0() {}
+    #[test]
+    fn t1() {}
+}
+"#,
+            &[TestMod, Test, Test],
+            expect![[r#"
+                [
+                    Runnable {
+                        use_name_in_title: true,
+                        nav: NavigationTarget {
+                            file_id: FileId(
+                                0,
+                            ),
+                            full_range: 26..94,
+                            focus_range: 30..36,
+                            name: "module",
+                            kind: Module,
+                            description: "mod module",
+                        },
+                        kind: TestMod {
+                            path: "module",
+                        },
+                        cfg: None,
+                    },
+                    Runnable {
+                        use_name_in_title: true,
+                        nav: NavigationTarget {
+                            file_id: FileId(
+                                0,
+                            ),
+                            full_range: 43..65,
+                            focus_range: 58..60,
+                            name: "t0",
+                            kind: Function,
+                        },
+                        kind: Test {
+                            test_id: Path(
+                                "module::t0",
+                            ),
+                            attr: TestAttr {
+                                ignore: false,
+                            },
+                        },
+                        cfg: None,
+                    },
+                    Runnable {
+                        use_name_in_title: true,
+                        nav: NavigationTarget {
+                            file_id: FileId(
+                                0,
+                            ),
+                            full_range: 70..92,
+                            focus_range: 85..87,
+                            name: "t1",
+                            kind: Function,
+                        },
+                        kind: Test {
+                            test_id: Path(
+                                "module::t1",
+                            ),
+                            attr: TestAttr {
+                                ignore: false,
+                            },
+                        },
+                        cfg: None,
+                    },
+                ]
+            "#]],
+        );
+    }
+
     #[test]
     fn find_no_tests() {
         check_tests(

crates/ide/src/syntax_highlighting/test_data/highlighting.html

@@ -51,14 +51,15 @@ pre                 { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
     <span class="keyword">pub</span> <span class="keyword">trait</span> <span class="trait declaration public">Copy</span> <span class="brace">{</span><span class="brace">}</span>
 <span class="brace">}</span>
 
-<span class="keyword">pub</span> <span class="keyword">mod</span> <span class="module declaration public">ops</span> <span class="brace">{</span>
+<span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="module attribute">proc_macros</span><span class="operator attribute">::</span><span class="builtin_attr attribute">identity</span><span class="attribute attribute">]</span>
-    <span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">lang</span><span class="attribute attribute"> </span><span class="operator attribute">=</span><span class="attribute attribute"> </span><span class="string_literal attribute">"fn_once"</span><span class="attribute attribute">]</span>
+<span class="keyword">pub</span> <span class="keyword">mod</span> <span class="module declaration">ops</span> <span class="brace">{</span>
+    <span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">lang</span> <span class="operator attribute">=</span> <span class="string_literal attribute">"fn_once"</span><span class="attribute attribute">]</span>
     <span class="keyword">pub</span> <span class="keyword">trait</span> <span class="trait declaration public">FnOnce</span><span class="angle">&lt;</span><span class="type_param declaration">Args</span><span class="angle">&gt;</span> <span class="brace">{</span><span class="brace">}</span>
 
-    <span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">lang</span><span class="attribute attribute"> </span><span class="operator attribute">=</span><span class="attribute attribute"> </span><span class="string_literal attribute">"fn_mut"</span><span class="attribute attribute">]</span>
+    <span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">lang</span> <span class="operator attribute">=</span> <span class="string_literal attribute">"fn_mut"</span><span class="attribute attribute">]</span>
     <span class="keyword">pub</span> <span class="keyword">trait</span> <span class="trait declaration public">FnMut</span><span class="angle">&lt;</span><span class="type_param declaration">Args</span><span class="angle">&gt;</span><span class="colon">:</span> <span class="trait public">FnOnce</span><span class="angle">&lt;</span><span class="type_param">Args</span><span class="angle">&gt;</span> <span class="brace">{</span><span class="brace">}</span>
 
-    <span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">lang</span><span class="attribute attribute"> </span><span class="operator attribute">=</span><span class="attribute attribute"> </span><span class="string_literal attribute">"fn"</span><span class="attribute attribute">]</span>
+    <span class="attribute attribute">#</span><span class="attribute attribute">[</span><span class="builtin_attr attribute">lang</span> <span class="operator attribute">=</span> <span class="string_literal attribute">"fn"</span><span class="attribute attribute">]</span>
     <span class="keyword">pub</span> <span class="keyword">trait</span> <span class="trait declaration public">Fn</span><span class="angle">&lt;</span><span class="type_param declaration">Args</span><span class="angle">&gt;</span><span class="colon">:</span> <span class="trait public">FnMut</span><span class="angle">&lt;</span><span class="type_param">Args</span><span class="angle">&gt;</span> <span class="brace">{</span><span class="brace">}</span>
 <span class="brace">}</span>
 

crates/ide/src/syntax_highlighting/tests.rs

@@ -10,6 +10,7 @@ use crate::{fixture, FileRange, HlTag, TextRange};
 fn test_highlighting() {
     check_highlighting(
         r#"
+//- proc_macros: identity
 //- /main.rs crate:main deps:foo
 use inner::{self as inner_mod};
 mod inner {}
@@ -23,6 +24,7 @@ pub mod marker {
     pub trait Copy {}
 }
 
+#[proc_macros::identity]
 pub mod ops {
     #[lang = "fn_once"]
     pub trait FnOnce<Args> {}