Implement new mod import sugar

Implements RFC #168.

1 files changed, 32 insertions, 0 deletions

diff --git a/src/test/compile-fail/use-mod.rs b/src/test/compile-fail/use-mod.rs
new file mode 100644
index 00000000000..b2b0eb21ace
--- /dev/null
+++ b/src/test/compile-fail/use-mod.rs
@@ -0,0 +1,32 @@
+// Copyright 2014 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.
+
+use foo::bar::{
+    mod,
+//~^ ERROR `mod` import can only appear once in the list
+    Bar,
+    mod
+//~^ NOTE another `mod` import appears here
+};
+
+use {mod};
+//~^ ERROR `mod` import can only appear in an import list with a non-empty prefix
+
+use foo::mod;
+//~^ ERROR `mod` imports are only allowed within a { } list
+
+mod foo {
+    pub mod bar {
+        pub struct Bar;
+        pub struct Baz;
+    }
+}
+
+fn main() {}