--- /dev/null 2016-05-31 09:42:47.975716356 -0700 +++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.graph.test/src/org/graalvm/compiler/graph/test/matchers/NodeIterableCount.java 2016-12-09 00:48:22.446365356 -0800 @@ -0,0 +1,51 @@ +/* + * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ +package org.graalvm.compiler.graph.test.matchers; + +import org.hamcrest.Description; +import org.hamcrest.TypeSafeDiagnosingMatcher; + +import org.graalvm.compiler.graph.iterators.NodeIterable; + +public class NodeIterableCount extends TypeSafeDiagnosingMatcher> { + private int count; + + public NodeIterableCount(int count) { + this.count = count; + } + + @Override + public void describeTo(Description description) { + description.appendText("is a NodeIterable containing ").appendValue(count).appendText(" elements"); + } + + public static NodeIterableCount hasCount(int count) { + return new NodeIterableCount(count); + } + + @Override + protected boolean matchesSafely(NodeIterable iterable, Description mismatchDescription) { + mismatchDescription.appendText("is a NodeIterable containing ").appendValue(iterable.count()).appendText(" elements"); + return iterable.count() == count; + } +}