Test PartialEq multidispatch

Author: Jorge Aparicio

src/test/run-pass/eq-multidispatch.rs

@@ -0,0 +1,37 @@
+// 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.
+
+#![feature(default_type_params)]
+
+#[deriving(PartialEq)]
+struct Bar;
+struct Baz;
+struct Foo;
+struct Fu;
+
+impl PartialEq for Baz { fn eq(&self, _: &Baz) -> bool  { true } }
+
+impl PartialEq<Fu> for Foo { fn eq(&self, _: &Fu) -> bool { true } }
+impl PartialEq<Foo> for Fu { fn eq(&self, _: &Foo) -> bool { true } }
+
+impl PartialEq<Bar> for Foo { fn eq(&self, _: &Bar) -> bool { false } }
+impl PartialEq<Foo> for Bar { fn eq(&self, _: &Foo) -> bool { false } }
+
+fn main() {
+    assert!(Bar != Foo);
+    assert!(Foo != Bar);
+
+    assert!(Bar == Bar);
+
+    assert!(Baz == Baz);
+
+    assert!(Foo == Fu);
+    assert!(Fu == Foo);
+}