120 lines
4.4 KiB
Java
120 lines
4.4 KiB
Java
/*
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* Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @summary Sanity test Thread.sleep behavior
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* @run junit SleepSanity
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*/
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import java.util.concurrent.TimeUnit;
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import org.junit.jupiter.api.Test;
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import static org.junit.jupiter.api.Assertions.*;
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public class SleepSanity {
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static final int[] TRY_MILLIS = new int[] { 0, 1, 10, 100, 1_000 };
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static final int[] TRY_NANOS = new int[] { 0, 1, 10, 100, 1_000, 10_000, 100_000, 999_999 };
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@Test
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void testMillis() throws Exception {
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testIAE(() -> Thread.sleep(-1), "timeout value is negative");
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testTimeout(() -> Thread.sleep(10_000), 5_000);
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testTimeout(() -> Thread.sleep(Integer.MAX_VALUE), 5_000);
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testTimeout(() -> Thread.sleep(Long.MAX_VALUE), 5_000);
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for (final int millis : TRY_MILLIS) {
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testTimes(() -> Thread.sleep(millis), millis, 20_000);
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}
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}
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@Test
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void testMillisNanos() throws Exception {
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testIAE(() -> Thread.sleep(-1), "timeout value is negative");
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testIAE(() -> Thread.sleep(0, -1), "nanosecond timeout value out of range");
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testIAE(() -> Thread.sleep(0, 1_000_000), "nanosecond timeout value out of range");
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testIAE(() -> Thread.sleep(0, Integer.MAX_VALUE), "nanosecond timeout value out of range");
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testTimeout(() -> Thread.sleep(10_000, 0), 5_000);
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testTimeout(() -> Thread.sleep(Integer.MAX_VALUE, 0), 5_000);
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testTimeout(() -> Thread.sleep(Long.MAX_VALUE, 0), 5_000);
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testTimeout(() -> Thread.sleep(10_000, 999_999), 5_000);
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testTimeout(() -> Thread.sleep(Integer.MAX_VALUE, 999_999), 5_000);
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testTimeout(() -> Thread.sleep(Long.MAX_VALUE, 999_999), 5_000);
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for (final int millis : TRY_MILLIS) {
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for (final int nanos : TRY_NANOS) {
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testTimes(() -> Thread.sleep(millis, nanos), millis, 20_000);
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}
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}
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}
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private static void testTimes(TestCase t, long millisMin, long millisMax) throws Exception {
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long start = System.nanoTime();
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t.run();
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long end = System.nanoTime();
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long duration = TimeUnit.NANOSECONDS.toMillis(end - start);
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assertTrue(duration >= millisMin, "Duration " + duration + "ms, expected >= " + millisMin + "ms");
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assertTrue(duration <= millisMax, "Duration " + duration + "ms, expected <= " + millisMax + "ms");
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}
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private static void testTimeout(TestCase t, long millis) throws Exception {
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Thread captThread = Thread.currentThread();
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Thread watcher = new Thread(() -> {
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try {
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Thread.sleep(millis);
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} catch (InterruptedException ie) {
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// Do nothing
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}
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captThread.interrupt();
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});
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watcher.setDaemon(true);
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watcher.start();
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try {
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t.run();
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fail("Exited before timeout");
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} catch (InterruptedException ie) {
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// Expected
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}
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watcher.join();
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}
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private static void testIAE(TestCase t, String msg) throws Exception {
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try {
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t.run();
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fail("Should have thrown the IAE");
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} catch (IllegalArgumentException iae) {
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assertTrue(iae.getMessage().contains(msg),
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"Thrown IAE does not contain the string: " + msg + " " + iae);
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}
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}
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private interface TestCase {
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void run() throws Exception;
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}
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}
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