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