From a233b1656e0311e6a9842546d2f4273a95ebf6d6 Mon Sep 17 00:00:00 2001
From: Michael Goulet <michael@errs.io>
Date: Wed, 21 Feb 2024 17:16:35 +0000
Subject: [PATCH] Add an ATB test

---
 .../associated-type-bounds/no-gat-position.rs  | 18 ++++++++++++++++++
 .../no-gat-position.stderr                     |  9 +++++++++
 2 files changed, 27 insertions(+)
 create mode 100644 tests/ui/associated-type-bounds/no-gat-position.rs
 create mode 100644 tests/ui/associated-type-bounds/no-gat-position.stderr

diff --git a/tests/ui/associated-type-bounds/no-gat-position.rs b/tests/ui/associated-type-bounds/no-gat-position.rs
new file mode 100644
index 0000000000000..01740e6242e98
--- /dev/null
+++ b/tests/ui/associated-type-bounds/no-gat-position.rs
@@ -0,0 +1,18 @@
+#![feature(associated_type_bounds)]
+
+// Test for <https://github.com/rust-lang/rust/issues/119857>.
+
+pub trait Iter {
+    type Item<'a>: 'a where Self: 'a;
+
+    fn next<'a>(&'a mut self) -> Option<Self::Item<'a, As1: Copy>>;
+    //~^ ERROR associated type bindings are not allowed here
+}
+
+impl Iter for () {
+    type Item<'a> = &'a mut [()];
+
+    fn next<'a>(&'a mut self) -> Option<Self::Item<'a>> { None }
+}
+
+fn main() {}
diff --git a/tests/ui/associated-type-bounds/no-gat-position.stderr b/tests/ui/associated-type-bounds/no-gat-position.stderr
new file mode 100644
index 0000000000000..5692b2c7d0902
--- /dev/null
+++ b/tests/ui/associated-type-bounds/no-gat-position.stderr
@@ -0,0 +1,9 @@
+error[E0229]: associated type bindings are not allowed here
+  --> $DIR/no-gat-position.rs:8:56
+   |
+LL |     fn next<'a>(&'a mut self) -> Option<Self::Item<'a, As1: Copy>>;
+   |                                                        ^^^^^^^^^ associated type not allowed here
+
+error: aborting due to 1 previous error
+
+For more information about this error, try `rustc --explain E0229`.