Add tests

Closes #22781.
Closes #23891.
Closes #24956.
Closes #25145.
Closes #25693.
Closes #26095.
Closes #26459.
Closes #27320.
Closes #27895.

src/test/compile-fail/issue-25145.rs

@@ -0,0 +1,22 @@
+// 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.
+
+#![feature(associated_consts)]
+
+struct S;
+
+impl S {
+    const N: usize = 3;
+}
+
+static STUFF: [u8; S::N] = [0; S::N];
+//~^ ERROR array length constant evaluation error: unresolved path in constant expression
+
+fn main() {}

src/test/compile-fail/issue-26459.rs

@@ -0,0 +1,16 @@
+// 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() {
+    match 'a' {
+        char{ch} => true
+        //~^ ERROR `char` does not name a struct or a struct variant
+    };
+}

src/test/compile-fail/issue-27895.rs

@@ -0,0 +1,21 @@
+// 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() {
+    let i = 5;
+    let index = 6;
+
+    match i {
+        0...index => println!("winner"),
+        //~^ ERROR paths in constants may only refer to constants or functions
+        //~| ERROR non-constant path in constant expression
+        _ => println!("hello"),
+    }
+}

src/test/run-pass/issue-22781.rs

@@ -0,0 +1,23 @@
+// 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::collections::HashMap;
+use std::collections::hash_map::Entry::Vacant;
+
+pub fn foo() {
+    type F = Box<Fn(&()) + 'static>;
+    let mut map: HashMap<(), F> = HashMap::new();
+    let x: &mut F = match map.entry(()) {
+        Vacant(_) => unimplemented!(),
+        _ => unimplemented!()
+    };
+}
+
+fn main() {}

src/test/run-pass/issue-23891.rs

@@ -0,0 +1,20 @@
+// 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.
+
+macro_rules! id {
+    ($s: pat) => ($s);
+}
+
+fn main() {
+    match (Some(123), Some(456)) {
+        (id!(Some(a)), _) | (_, id!(Some(a))) => println!("{}", a),
+        _ => (),
+    }
+}

src/test/run-pass/issue-24956.rs

@@ -0,0 +1,20 @@
+// 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.
+
+struct Foo(bool);
+const NEW_FALSE: bool = false;
+const STATIC_FOO: Foo = Foo(NEW_FALSE);
+
+pub fn main() {
+    match (Foo(false)) {
+        STATIC_FOO => 3,
+        _ => 11
+    };
+}

src/test/run-pass/issue-25693.rs

@@ -0,0 +1,30 @@
+// 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.
+
+pub trait Paramters { type SelfRef; }
+
+struct RP<'a> { _marker: std::marker::PhantomData<&'a ()> }
+struct BP;
+
+impl<'a> Paramters for RP<'a> { type SelfRef = &'a X<RP<'a>>; }
+impl Paramters for BP { type SelfRef = Box<X<BP>>; }
+
+pub struct Y;
+pub enum X<P: Paramters> {
+    Nothing,
+    SameAgain(P::SelfRef, Y)
+}
+
+fn main() {
+    let bnil: Box<X<BP>> = Box::new(X::Nothing);
+    let bx: Box<X<BP>> = Box::new(X::SameAgain(bnil, Y));
+    let rnil: X<RP> = X::Nothing;
+    let rx: X<RP> = X::SameAgain(&rnil, Y);
+}

src/test/run-pass/issue-26095.rs

@@ -0,0 +1,30 @@
+// 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.
+
+#![feature(associated_consts)]
+
+trait HasNumber<T> {
+    const Number: usize;
+}
+
+enum One {}
+enum Two {}
+
+enum Foo {}
+
+impl<T> HasNumber<T> for One {
+    const Number: usize = 1;
+}
+
+impl<T> HasNumber<T> for Two {
+    const Number: usize = 2;
+}
+
+fn main() {}

src/test/run-pass/issue-27320.rs

@@ -0,0 +1,21 @@
+// 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.
+
+macro_rules! piece(
+    ($piece:pat) => ($piece);
+);
+
+enum Piece {A, B}
+
+fn main() {
+    match Piece::A {
+        piece!(pt@ Piece::A) | piece!(pt@ Piece::B) => {}
+    }
+}