Add tests for rust-lang#12669

Author: flodiebold

crates/hir-ty/src/tests/macros.rs

@@ -1274,3 +1274,65 @@ impl S {
         "#]],
     );
 }
+
+#[test]
+fn infer_in_unexpandable_attr_proc_macro_1() {
+    check_types(
+        r#"
+//- /main.rs crate:main deps:mac
+#[mac::attr_macro]
+fn foo() {
+    let xxx = 1;
+      //^^^ i32
+}
+
+//- /mac.rs crate:mac
+#![crate_type="proc-macro"]
+#[proc_macro_attribute]
+pub fn attr_macro() {}
+"#,
+    );
+}
+
+#[test]
+fn infer_in_unexpandable_attr_proc_macro_in_impl() {
+    check_types(
+        r#"
+//- /main.rs crate:main deps:mac
+struct Foo;
+impl Foo {
+    #[mac::attr_macro]
+    fn foo() {
+        let xxx = 1;
+          //^^^ i32
+    }
+}
+
+//- /mac.rs crate:mac
+#![crate_type="proc-macro"]
+#[proc_macro_attribute]
+pub fn attr_macro() {}
+"#,
+    );
+}
+
+#[test]
+fn infer_in_unexpandable_attr_proc_macro_in_trait() {
+    check_types(
+        r#"
+//- /main.rs crate:main deps:mac
+trait Foo {
+    #[mac::attr_macro]
+    fn foo() {
+        let xxx = 1;
+          //^^^ i32
+    }
+}
+
+//- /mac.rs crate:mac
+#![crate_type="proc-macro"]
+#[proc_macro_attribute]
+pub fn attr_macro() {}
+"#,
+    );
+}

crates/ide-diagnostics/src/handlers/inactive_code.rs

@@ -104,6 +104,25 @@ fn f() {
         );
     }
 
+    #[test]
+    fn inactive_assoc_item() {
+        // FIXME these currently don't work, hence the *
+        check(
+            r#"
+struct Foo;
+impl Foo {
+    #[cfg(any())] pub fn f() {}
+  //*************************** weak: code is inactive due to #[cfg] directives
+}
+
+trait Bar {
+    #[cfg(any())] pub fn f() {}
+  //*************************** weak: code is inactive due to #[cfg] directives
+}
+"#,
+        );
+    }
+
     /// Tests that `cfg` attributes behind `cfg_attr` is handled properly.
     #[test]
     fn inactive_via_cfg_attr() {