| /* |
| * Copyright (c) 2013, 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 jdk.testlibrary; |
| |
| import static jdk.testlibrary.Asserts.assertTrue; |
| |
| import java.io.IOException; |
| import java.net.InetAddress; |
| import java.net.ServerSocket; |
| import java.net.UnknownHostException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Arrays; |
| import java.util.Collections; |
| |
| /** |
| * Common library for various test helper functions. |
| */ |
| public final class Utils { |
| |
| /** |
| * Returns the sequence used by operating system to separate lines. |
| */ |
| public static final String NEW_LINE = System.getProperty("line.separator"); |
| |
| /** |
| * Returns the value of 'test.vm.opts'system property. |
| */ |
| public static final String VM_OPTIONS = System.getProperty("test.vm.opts", "").trim(); |
| |
| /** |
| * Returns the value of 'test.java.opts'system property. |
| */ |
| public static final String JAVA_OPTIONS = System.getProperty("test.java.opts", "").trim(); |
| |
| |
| private Utils() { |
| // Private constructor to prevent class instantiation |
| } |
| |
| /** |
| * Returns the list of VM options. |
| * |
| * @return List of VM options |
| */ |
| public static List<String> getVmOptions() { |
| return Arrays.asList(safeSplitString(VM_OPTIONS)); |
| } |
| |
| /** |
| * Returns the list of VM options with -J prefix. |
| * |
| * @return The list of VM options with -J prefix |
| */ |
| public static List<String> getForwardVmOptions() { |
| String[] opts = safeSplitString(VM_OPTIONS); |
| for (int i = 0; i < opts.length; i++) { |
| opts[i] = "-J" + opts[i]; |
| } |
| return Arrays.asList(opts); |
| } |
| |
| /** |
| * Returns the default JTReg arguments for a jvm running a test. |
| * This is the combination of JTReg arguments test.vm.opts and test.java.opts. |
| * @return An array of options, or an empty array if no opptions. |
| */ |
| public static String[] getTestJavaOpts() { |
| List<String> opts = new ArrayList<String>(); |
| Collections.addAll(opts, safeSplitString(VM_OPTIONS)); |
| Collections.addAll(opts, safeSplitString(JAVA_OPTIONS)); |
| return opts.toArray(new String[0]); |
| } |
| |
| /** |
| * Combines given arguments with default JTReg arguments for a jvm running a test. |
| * This is the combination of JTReg arguments test.vm.opts and test.java.opts |
| * @return The combination of JTReg test java options and user args. |
| */ |
| public static String[] addTestJavaOpts(String... userArgs) { |
| List<String> opts = new ArrayList<String>(); |
| Collections.addAll(opts, getTestJavaOpts()); |
| Collections.addAll(opts, userArgs); |
| return opts.toArray(new String[0]); |
| } |
| |
| /** |
| * Splits a string by white space. |
| * Works like String.split(), but returns an empty array |
| * if the string is null or empty. |
| */ |
| private static String[] safeSplitString(String s) { |
| if (s == null || s.trim().isEmpty()) { |
| return new String[] {}; |
| } |
| return s.trim().split("\\s+"); |
| } |
| |
| /** |
| * @return The full command line for the ProcessBuilder. |
| */ |
| public static String getCommandLine(ProcessBuilder pb) { |
| StringBuilder cmd = new StringBuilder(); |
| for (String s : pb.command()) { |
| cmd.append(s).append(" "); |
| } |
| return cmd.toString(); |
| } |
| |
| /** |
| * Returns the free port on the local host. |
| * The function will spin until a valid port number is found. |
| * |
| * @return The port number |
| * @throws InterruptedException if any thread has interrupted the current thread |
| * @throws IOException if an I/O error occurs when opening the socket |
| */ |
| public static int getFreePort() throws InterruptedException, IOException { |
| int port = -1; |
| |
| while (port <= 0) { |
| Thread.sleep(100); |
| |
| ServerSocket serverSocket = null; |
| try { |
| serverSocket = new ServerSocket(0); |
| port = serverSocket.getLocalPort(); |
| } finally { |
| serverSocket.close(); |
| } |
| } |
| |
| return port; |
| } |
| |
| /** |
| * Returns the name of the local host. |
| * |
| * @return The host name |
| * @throws UnknownHostException if IP address of a host could not be determined |
| */ |
| public static String getHostname() throws UnknownHostException { |
| InetAddress inetAddress = InetAddress.getLocalHost(); |
| String hostName = inetAddress.getHostName(); |
| |
| assertTrue((hostName != null && !hostName.isEmpty()), |
| "Cannot get hostname"); |
| |
| return hostName; |
| } |
| |
| } |