Move /src/test to /tests

tests/ui/threads-sendsync/task-spawn-move-and-copy.rs

@@ -0,0 +1,23 @@
+// run-pass
+#![allow(unused_must_use)]
+// ignore-emscripten no threads support
+
+use std::thread;
+use std::sync::mpsc::channel;
+
+pub fn main() {
+    let (tx, rx) = channel::<usize>();
+
+    let x: Box<isize> = Box::new(1);
+    let x_in_parent = &(*x) as *const isize as usize;
+
+    let t = thread::spawn(move || {
+        let x_in_child = &(*x) as *const isize as usize;
+        tx.send(x_in_child).unwrap();
+    });
+
+    let x_in_child = rx.recv().unwrap();
+    assert_eq!(x_in_parent, x_in_child);
+
+    t.join();
+}