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* Copyright ( c ) 2017 , 2020 , 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 .
*
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*/
/*
* @ test
* @ modules java . scripting
* @ library modules classpath / pearscript
* @ build ReloadTest org . pear . PearScript org . pear . PearScriptEngineFactory bananascript /*
* @ run testng / othervm ReloadTest
* @ summary Basic test of ServiceLoader . reload
*/
import java.util.ConcurrentModificationException;
import java.util.Iterator;
import java.util.List;
import java.util.ServiceLoader;
import java.util.ServiceLoader.Provider;
import java.util.Spliterator;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import static java.util.ServiceLoader.*;
import javax.script.ScriptEngineFactory;
import org.testng.annotations.Test;
import static org.testng.Assert .*;
@Test
public class ReloadTest {
public void testReload() {
ServiceLoader<ScriptEngineFactory> sl = load(ScriptEngineFactory.class );
List<String> names1 = sl.stream()
.map(Provider::get)
.map(ScriptEngineFactory::getEngineName)
.collect(Collectors.toList());
assertFalse(names1.isEmpty());
sl.reload();
List<String> names2 = sl.stream()
.map(Provider::get)
.map(ScriptEngineFactory::getEngineName)
.collect(Collectors.toList());
assertEquals(names1, names2);
}
@Test(expectedExceptions = { ConcurrentModificationException.class })
public void testIteratorHasNext() {
ServiceLoader<ScriptEngineFactory> sl = load(ScriptEngineFactory.class );
Iterator<ScriptEngineFactory> iterator = sl.iterator();
sl.reload();
iterator.hasNext();
}
@Test(expectedExceptions = { ConcurrentModificationException.class })
public void testIteratorNext() {
ServiceLoader<ScriptEngineFactory> sl = load(ScriptEngineFactory.class );
Iterator<ScriptEngineFactory> iterator = sl.iterator();
assertTrue(iterator.hasNext());
sl.reload();
iterator.next();
}
@Test(expectedExceptions = { ConcurrentModificationException.class })
public void testStreamFindAny() {
ServiceLoader<ScriptEngineFactory> sl = load(ScriptEngineFactory.class );
Stream<Provider<ScriptEngineFactory>> stream = sl.stream();
sl.reload();
stream.findAny();
}
@Test(expectedExceptions = { ConcurrentModificationException.class })
public void testSpliteratorTryAdvance() {
ServiceLoader<ScriptEngineFactory> sl = load(ScriptEngineFactory.class );
Stream<Provider<ScriptEngineFactory>> stream = sl.stream();
Spliterator<Provider<ScriptEngineFactory>> spliterator = stream.spliterator();
sl.reload();
spliterator.tryAdvance(System.out::println);
}
}
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