From dc5a920deb7aa9f778cde3f0aad485a2592f738f Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Tue, 8 Nov 2022 00:47:31 -0800
Subject: [PATCH] Add raw identifier ui test

---
 tests/ui/raw_ident_namespace.rs     | 53 +++++++++++++++++++++++++++++
 tests/ui/raw_ident_namespace.stderr | 11 ++++++
 2 files changed, 64 insertions(+)
 create mode 100644 tests/ui/raw_ident_namespace.rs
 create mode 100644 tests/ui/raw_ident_namespace.stderr

diff --git a/tests/ui/raw_ident_namespace.rs b/tests/ui/raw_ident_namespace.rs
new file mode 100644
index 000000000..2c8286c70
--- /dev/null
+++ b/tests/ui/raw_ident_namespace.rs
@@ -0,0 +1,53 @@
+use cxx::{type_id, ExternType};
+
+#[repr(transparent)]
+pub struct QuotedRaw(usize);
+
+unsafe impl ExternType for QuotedRaw {
+    type Id = type_id!("org::r#box::implementation::QuotedRaw");
+    type Kind = cxx::kind::Trivial;
+}
+
+#[repr(transparent)]
+pub struct QuotedKeyword(usize);
+
+unsafe impl ExternType for QuotedKeyword {
+    type Id = type_id!("org::box::implementation::QuotedKeyword");
+    type Kind = cxx::kind::Trivial;
+}
+
+#[repr(transparent)]
+pub struct UnquotedRaw(usize);
+
+unsafe impl ExternType for UnquotedRaw {
+    type Id = type_id!(org::r#box::implementation::UnquotedRaw);
+    type Kind = cxx::kind::Trivial;
+}
+
+#[repr(transparent)]
+pub struct UnquotedKeyword(usize);
+
+unsafe impl ExternType for UnquotedKeyword {
+    type Id = type_id!(org::box::implementation::UnquotedKeyword);
+    type Kind = cxx::kind::Trivial;
+}
+
+#[cxx::bridge]
+pub mod ffi {
+    extern "C++" {
+        #[namespace = "org::r#box::implementation"]
+        type QuotedRaw = crate::QuotedRaw;
+
+        #[namespace = "org::box::implementation"]
+        type QuotedKeyword = crate::QuotedKeyword;
+
+        #[namespace = org::r#box::implementation]
+        type UnquotedRaw = crate::UnquotedRaw;
+
+        // Not allowed by rustc (independent of cxx):
+        // #[namespace = org::box::implementation]
+        // type UnquotedKeyword = crate::UnquotedKeyword;
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/raw_ident_namespace.stderr b/tests/ui/raw_ident_namespace.stderr
new file mode 100644
index 000000000..e46845942
--- /dev/null
+++ b/tests/ui/raw_ident_namespace.stderr
@@ -0,0 +1,11 @@
+error: raw identifier `r#box` is not allowed in a quoted namespace
+ --> tests/ui/raw_ident_namespace.rs:7:24
+  |
+7 |     type Id = type_id!("org::r#box::implementation::QuotedRaw");
+  |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: raw identifier `r#box` is not allowed in a quoted namespace
+  --> tests/ui/raw_ident_namespace.rs:38:23
+   |
+38 |         #[namespace = "org::r#box::implementation"]
+   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^