3 files changed, 47 insertions, 0 deletions
diff --git a/tests/ui/pattern/usefulness/auxiliary/empty.rs b/tests/ui/pattern/usefulness/auxiliary/empty.rs
new file mode 100644
index 000000000..29a03c9e8
--- /dev/null
+++ b/tests/ui/pattern/usefulness/auxiliary/empty.rs
@@ -0,0 +1,10 @@
+#![crate_type = "rlib"]
+pub enum EmptyForeignEnum {}
+
+pub struct VisiblyUninhabitedForeignStruct {
+    pub field: EmptyForeignEnum,
+}
+
+pub struct SecretlyUninhabitedForeignStruct {
+    _priv: EmptyForeignEnum,
+}
diff --git a/tests/ui/pattern/usefulness/auxiliary/hidden.rs b/tests/ui/pattern/usefulness/auxiliary/hidden.rs
new file mode 100644
index 000000000..364514ba1
--- /dev/null
+++ b/tests/ui/pattern/usefulness/auxiliary/hidden.rs
@@ -0,0 +1,14 @@
+pub enum HiddenEnum {
+    A,
+    B,
+    #[doc(hidden)]
+    C,
+}
+
+#[derive(Default)]
+pub struct HiddenStruct {
+    pub one: u8,
+    pub two: bool,
+    #[doc(hidden)]
+    pub hide: usize,
+}
diff --git a/tests/ui/pattern/usefulness/auxiliary/unstable.rs b/tests/ui/pattern/usefulness/auxiliary/unstable.rs
new file mode 100644
index 000000000..a06b3a6e4
--- /dev/null
+++ b/tests/ui/pattern/usefulness/auxiliary/unstable.rs
@@ -0,0 +1,23 @@
+#![feature(staged_api)]
+#![stable(feature = "stable_test_feature", since = "1.0.0")]
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub enum UnstableEnum {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    Stable,
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    Stable2,
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
+    Unstable,
+}
+
+#[derive(Default)]
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub struct UnstableStruct {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    pub stable: bool,
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    pub stable2: usize,
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
+    pub unstable: u8,
+}