127 lines
4.0 KiB
Java
127 lines
4.0 KiB
Java
/*
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* Copyright (c) 2022, 2023, Oracle and/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 Test Thread.sleep(Duration)
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* @run junit SleepWithDuration
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*/
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import java.time.Duration;
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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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class SleepWithDuration {
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/**
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* Basic test for sleep(Duration).
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*/
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@Test
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void testSleep() throws Exception {
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// sleep for 2 seconds
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long start = millisTime();
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Thread.sleep(Duration.ofMillis(2000));
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expectDuration(start, /*min*/1900, /*max*/20_000);
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Thread.sleep(Duration.ofNanos(-1));
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Thread.sleep(Duration.ofNanos(0));
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Thread.sleep(Duration.ofNanos(1));
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assertThrows(NullPointerException.class, () -> Thread.sleep(null));
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}
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/**
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* Test Thread.sleep with interrupt status set.
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*/
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@Test
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void testSleepWithInterruptStatusSet() throws Exception {
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Thread.currentThread().interrupt();
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try {
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Thread.sleep(Duration.ofNanos(0));
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fail();
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} catch (InterruptedException e) {
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assertFalse(Thread.interrupted());
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}
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Thread.currentThread().interrupt();
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try {
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Thread.sleep(Duration.ofSeconds(2));
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fail();
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} catch (InterruptedException e) {
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assertFalse(Thread.interrupted());
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}
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}
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/**
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* Test interrupting Thread.sleep.
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*/
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@Test
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void testInterruptSleep() throws Exception {
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// schedule current thread to be interrupted after 1s
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Thread targetThread = Thread.currentThread();
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Thread wakerThread = new Thread(() -> {
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try {
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Thread.sleep(1000);
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targetThread.interrupt();
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} catch (Exception e) {
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e.printStackTrace();
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}
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});
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wakerThread.start();
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try {
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Thread.sleep(Duration.ofSeconds(60));
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fail();
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} catch (InterruptedException e) {
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// interrupt status should be cleared
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assertFalse(Thread.interrupted());
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} finally {
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wakerThread.join();
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}
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}
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/**
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* Returns the current time in milliseconds.
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*/
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private static long millisTime() {
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long now = System.nanoTime();
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return TimeUnit.MILLISECONDS.convert(now, TimeUnit.NANOSECONDS);
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}
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/**
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* Check the duration of a task
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* @param start start time, in milliseconds
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* @param min minimum expected duration, in milliseconds
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* @param max maximum expected duration, in milliseconds
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* @return the duration (now - start), in milliseconds
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*/
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private static void expectDuration(long start, long min, long max) {
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long duration = millisTime() - start;
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assertTrue(duration >= min,
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"Duration " + duration + "ms, expected >= " + min + "ms");
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assertTrue(duration <= max,
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"Duration " + duration + "ms, expected <= " + max + "ms");
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}
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}
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