Add tests for self type using builtin kinds. (#7083)

Author: bblum

src/test/compile-fail/builtin-superkinds-self-type.rs

@@ -0,0 +1,26 @@
+// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Tests (negatively) the ability for the Self type in default methods
+// to use capabilities granted by builtin kinds as supertraits.
+
+trait Foo : Freeze {
+    fn foo(self, chan: std::comm::Chan<Self>) {
+        chan.send(self); //~ ERROR does not fulfill `Send`
+    }
+}
+
+impl <T: Freeze> Foo for T { }
+
+fn main() {
+    let (p,c) = std::comm::stream();
+    1193182.foo(c);
+    assert!(p.recv() == 1193182);
+}

src/test/run-pass/builtin-superkinds-self-type.rs

@@ -0,0 +1,26 @@
+// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Tests the ability for the Self type in default methods to use
+// capabilities granted by builtin kinds as supertraits.
+
+trait Foo : Send {
+    fn foo(self, chan: std::comm::Chan<Self>) {
+        chan.send(self);
+    }
+}
+
+impl <T: Send> Foo for T { }
+
+fn main() {
+    let (p,c) = std::comm::stream();
+    1193182.foo(c);
+    assert!(p.recv() == 1193182);
+}