Move /src/test to /tests

tests/ui/structs-enums/borrow-tuple-fields.rs

@@ -0,0 +1,38 @@
+// run-pass
+
+struct Foo(isize, isize);
+
+fn main() {
+    let x = (1, 2);
+    let a = &x.0;
+    let b = &x.0;
+    assert_eq!(*a, 1);
+    assert_eq!(*b, 1);
+
+    let mut x = (1, 2);
+    {
+        let a = &x.0;
+        let b = &mut x.1;
+        *b = 5;
+        assert_eq!(*a, 1);
+    }
+    assert_eq!(x.0, 1);
+    assert_eq!(x.1, 5);
+
+
+    let x = Foo(1, 2);
+    let a = &x.0;
+    let b = &x.0;
+    assert_eq!(*a, 1);
+    assert_eq!(*b, 1);
+
+    let mut x = Foo(1, 2);
+    {
+        let a = &x.0;
+        let b = &mut x.1;
+        *b = 5;
+        assert_eq!(*a, 1);
+    }
+    assert_eq!(x.0, 1);
+    assert_eq!(x.1, 5);
+}