1 files changed, 44 insertions, 0 deletions
diff --git a/tests/ui/deriving/deriving-cmp-generic-enum.rs b/tests/ui/deriving/deriving-cmp-generic-enum.rs
new file mode 100644
index 000000000..88da4bd06
--- /dev/null
+++ b/tests/ui/deriving/deriving-cmp-generic-enum.rs
@@ -0,0 +1,44 @@
+// run-pass
+#[derive(PartialEq, Eq, PartialOrd, Ord)]
+enum E<T> {
+    E0,
+    E1(T),
+    E2(T,T)
+}
+
+pub fn main() {
+    let e0 = E::E0;
+    let e11 = E::E1(1);
+    let e12 = E::E1(2);
+    let e21 = E::E2(1, 1);
+    let e22 = E::E2(1, 2);
+
+    // in order for both PartialOrd and Ord
+    let es = [e0, e11, e12, e21, e22];
+
+    for (i, e1) in es.iter().enumerate() {
+        for (j, e2) in es.iter().enumerate() {
+            let ord = i.cmp(&j);
+
+            let eq = i == j;
+            let lt = i < j;
+            let le = i <= j;
+            let gt = i > j;
+            let ge = i >= j;
+
+            // PartialEq
+            assert_eq!(*e1 == *e2, eq);
+            assert_eq!(*e1 != *e2, !eq);
+
+            // PartialOrd
+            assert_eq!(*e1 < *e2, lt);
+            assert_eq!(*e1 > *e2, gt);
+
+            assert_eq!(*e1 <= *e2, le);
+            assert_eq!(*e1 >= *e2, ge);
+
+            // Ord
+            assert_eq!(e1.cmp(e2), ord);
+        }
+    }
+}