test: Add tests for multiple outer attributes on items

Issue #487

src/test/run-pass/item-attributes.rs

@@ -1,21 +1,51 @@
 // xfail-stage0
 
-#[attr = "val"]
-const int x = 10;
+mod test_single_attr_outer {
+
+  #[attr = "val"]
+  const int x = 10;
+
+  #[attr = "val"]
+  mod mod1 {
+  }
+
+  #[attr = "val"]
+  native "rust" mod rustrt {
+  }
+
+  #[attr = "val"]
+  type t = obj { };
+
+  #[attr = "val"]
+  obj o() { }
 
-#[attr = "val"]
-mod mod1 {
 }
 
-#[attr = "val"]
-native "rust" mod rustrt {
+mod test_multi_attr_outer {
+
+  #[attr1 = "val"]
+  #[attr2 = "val"]
+  const int x = 10;
+
+  #[attr1 = "val"]
+  #[attr2 = "val"]
+  mod mod1 {
+  }
+
+  #[attr1 = "val"]
+  #[attr2 = "val"]
+  native "rust" mod rustrt {
+  }
+
+  #[attr1 = "val"]
+  #[attr2 = "val"]
+  type t = obj { };
+
+  #[attr1 = "val"]
+  #[attr2 = "val"]
+  obj o() { }
+
 }
 
-#[attr = "val"]
-type t = obj { };
-
-#[attr = "val"]
-obj o() { }
-
 fn main() {
 }