Split up tests, reduce coverage

src/test/compile-fail/issue-22897.rs

@@ -17,15 +17,3 @@ fn unconstrained_type() {
     [];
     //~^ ERROR cannot determine a type for this expression: unconstrained type
 }
-
-fn invalid_impl_within_scope() {
-    {
-        use std::ops::Deref;
-        struct Something;
-
-        impl Deref for Something {}
-        //~^ ERROR not all trait items implemented, missing: `Target`, `deref`
-
-        *Something
-    };
-}

src/test/compile-fail/issue-23041.rs

@@ -0,0 +1,18 @@
+// Copyright 2015 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 std::any::Any;
+fn main()
+{
+    fn bar(x:i32) ->i32 { 3*x };
+    let b:Box<Any> = Box::new(bar as fn(_)->_);
+    b.downcast_ref::<fn(_)->_>();
+    //~^ ERROR cannot determine a type for this expression: unconstrained type
+}

src/test/compile-fail/issue-23966.rs

@@ -0,0 +1,14 @@
+// Copyright 2015 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.
+
+fn main() {
+    "".chars().fold(|_, _| (), ());
+    //~^ ERROR cannot determine a type for this expression: unconstrained type
+}

src/test/compile-fail/issue-24013.rs

@@ -0,0 +1,17 @@
+// Copyright 2015 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.
+
+fn main() {
+    use std::mem::{transmute, swap};
+    let a = 1;
+    let b = 2;
+    unsafe {swap::<&mut _>(transmute(&a), transmute(&b))};
+    //~^ ERROR cannot determine a type for this expression: unconstrained type
+}