src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/HashMapGetTest.java

/*
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 * 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.
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package org.graalvm.compiler.core.test;

import jdk.vm.ci.meta.ResolvedJavaMethod;
import org.graalvm.compiler.nodes.IfNode;
import org.graalvm.compiler.nodes.LogicNode;
import org.graalvm.compiler.nodes.ReturnNode;
import org.graalvm.compiler.nodes.calc.ObjectEqualsNode;
import org.junit.Test;

import java.util.HashMap;

public class HashMapGetTest extends GraalCompilerTest {

    public static void mapGet(HashMap<Integer, Integer> map, Integer key) {
        map.get(key);
    }

    @Test
    public void hashMapTest() {
        HashMap<Integer, Integer> map = new HashMap<>();
        ResolvedJavaMethod get = getResolvedJavaMethod(HashMapGetTest.class, "mapGet");
        for (int i = 0; i < 5000; i++) {
            mapGet(map, i);
            map.put(i, i);
            mapGet(map, i);
        }
        test(get, null, map, new Integer(0));
        for (IfNode ifNode : lastCompiledGraph.getNodes(IfNode.TYPE)) {
            LogicNode condition = ifNode.condition();
            if (ifNode.getTrueSuccessorProbability() < 0.4 && condition instanceof ObjectEqualsNode) {
                assertTrue(ifNode.trueSuccessor().next() instanceof ReturnNode, "Expected return.", ifNode.trueSuccessor(), ifNode.trueSuccessor().next());
            }
        }
    }

}