ProcessUtils.java

/*
 * Copyright (c) 2017, 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.
 */

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;

/*
 * Utilities for executing java process.
 */
public class ProcessUtils {

    private static final String TEST_CLASSES = System.getProperty("test.classes");

    public static OutputAnalyzer java(String jdkPath, Map<String, String> props,
            Class<?> clazz) {
        List<String> cmds = new ArrayList<>();
        cmds.add(jdkPath + "/bin/java");

        if (props != null) {
            for (Map.Entry<String, String> prop : props.entrySet()) {
                cmds.add("-D" + prop.getKey() + "=" + prop.getValue());
            }
        }

        cmds.add("-cp");
        cmds.add(TEST_CLASSES);
        cmds.add(clazz.getName());
        try {
            return ProcessTools.executeCommand(
                    cmds.toArray(new String[cmds.size()]));
        } catch (Throwable e) {
            throw new RuntimeException("Execute command failed: " + cmds, e);
        }
    }
}