hamcrest 0.1.5

A port of the Hamcrest testing library
Documentation 
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// Copyright 2014 Carl Lerche, Steve Klabnik, Alex Crichton, Yehuda Katz,
//                Ben Longbons
// Copyright 2015 Carl Lerche, Alex Crichton, Robin Gloster
// Copyright 2016 Urban Hafner
//
// 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::fmt;

use core::*;

pub struct EqualTo<T> {
    expected: T,
}

impl<T: fmt::Debug> fmt::Display for EqualTo<T> {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        self.expected.fmt(f)
    }
}

impl<T: PartialEq + fmt::Debug> Matcher<T> for EqualTo<T> {
    fn matches(&self, actual: T) -> MatchResult {
        if self.expected.eq(&actual) {
            success()
        } else {
            Err(format!("was {:?}", actual))
        }
    }
}

pub fn equal_to<T: PartialEq + fmt::Debug>(expected: T) -> EqualTo<T> {
    EqualTo { expected: expected }
}