001/*
002 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.graph.test.matchers;
024
025import org.hamcrest.*;
026
027import com.oracle.graal.graph.iterators.*;
028
029public class NodeIterableCount extends TypeSafeDiagnosingMatcher<NodeIterable<?>> {
030    private int count;
031
032    public NodeIterableCount(int count) {
033        this.count = count;
034    }
035
036    @Override
037    public void describeTo(Description description) {
038        description.appendText("is a NodeIterable containing ").appendValue(count).appendText(" elements");
039    }
040
041    public static NodeIterableCount hasCount(int count) {
042        return new NodeIterableCount(count);
043    }
044
045    @Override
046    protected boolean matchesSafely(NodeIterable<?> iterable, Description mismatchDescription) {
047        mismatchDescription.appendText("is a NodeIterable containing ").appendValue(iterable.count()).appendText(" elements");
048        return iterable.count() == count;
049    }
050}