1 files changed, 37 insertions, 0 deletions
diff --git a/src/test/ui/destructuring-assignment/tuple_destructure.rs b/src/test/ui/destructuring-assignment/tuple_destructure.rs
new file mode 100644
index 000000000..2a8584029
--- /dev/null
+++ b/src/test/ui/destructuring-assignment/tuple_destructure.rs
@@ -0,0 +1,37 @@
+// run-pass
+
+fn main() {
+    let (mut a, mut b);
+    (a, b) = (0, 1);
+    assert_eq!((a, b), (0, 1));
+    (b, a) = (a, b);
+    assert_eq!((a, b), (1, 0));
+    (a, .., b) = (1, 2);
+    assert_eq!((a, b), (1, 2));
+    (.., a) = (1, 2);
+    assert_eq!((a, b), (2, 2));
+    (..) = (3, 4);
+    assert_eq!((a, b), (2, 2));
+    (b, ..) = (5, 6, 7);
+    assert_eq!(b, 5);
+    (a, _) = (8, 9);
+    assert_eq!(a, 8);
+
+    // Test for a non-Copy type (String):
+    let (mut c, mut d);
+    (c, d) = ("c".to_owned(), "d".to_owned());
+    assert_eq!(c, "c");
+    assert_eq!(d, "d");
+    (d, c) = (c, d);
+    assert_eq!(c, "d");
+    assert_eq!(d, "c");
+
+    // Test nesting/parentheses:
+    ((a, b)) = (0, 1);
+    assert_eq!((a, b), (0, 1));
+    (((a, b)), (c)) = ((2, 3), d);
+    assert_eq!((a, b), (2, 3));
+    assert_eq!(c, "c");
+    ((a, .., b), .., (..)) = ((4, 5), ());
+    assert_eq!((a, b), (4, 5));
+}