--- /dev/null 2015-11-05 17:45:32.000000000 -0800 +++ new/test/java/util/List/ListFactories.java 2015-11-05 17:45:32.000000000 -0800 @@ -0,0 +1,221 @@ +/* + * Copyright (c) 2015, 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. + */ + +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.IOException; +import java.io.ObjectInputStream; +import java.io.ObjectOutputStream; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.Iterator; +import java.util.List; + +import org.testng.annotations.DataProvider; +import org.testng.annotations.Test; + +import static java.util.Arrays.asList; + +import static org.testng.Assert.assertEquals; +import static org.testng.Assert.assertFalse; +import static org.testng.Assert.assertTrue; +import static org.testng.Assert.fail; + +/* + * @test + * @bug 8048330 + * @summary Test convenience static factory methods on List. + * @run testng ListFactories + */ + +public class ListFactories { + + static final int NUM_STRINGS = 20; // should be larger than the largest fixed-arg overload + static final String[] stringArray; + static { + String[] sa = new String[NUM_STRINGS]; + for (int i = 0; i < NUM_STRINGS; i++) { + sa[i] = String.valueOf((char)('a' + i)); + } + stringArray = sa; + } + + // returns array of [actual, expected] + static Object[] a(List act, List exp) { + return new Object[] { act, exp }; + } + + @DataProvider(name="empty") + public Iterator empty() { + return Collections.singletonList( + a(List.of(), Collections.emptyList()) + ).iterator(); + } + + @DataProvider(name="nonempty") + public Iterator nonempty() { + return asList( + a(List.of("a"), + asList("a")), + a(List.of("a", "b"), + asList("a", "b")), + a(List.of("a", "b", "c"), + asList("a", "b", "c")), + a(List.of("a", "b", "c", "d"), + asList("a", "b", "c", "d")), + a(List.of("a", "b", "c", "d", "e"), + asList("a", "b", "c", "d", "e")), + a(List.of("a", "b", "c", "d", "e", "f"), + asList("a", "b", "c", "d", "e", "f")), + a(List.of("a", "b", "c", "d", "e", "f", "g"), + asList("a", "b", "c", "d", "e", "f", "g")), + a(List.of("a", "b", "c", "d", "e", "f", "g", "h"), + asList("a", "b", "c", "d", "e", "f", "g", "h")), + a(List.of("a", "b", "c", "d", "e", "f", "g", "h", "i"), + asList("a", "b", "c", "d", "e", "f", "g", "h", "i")), + a(List.of("a", "b", "c", "d", "e", "f", "g", "h", "i", "j"), + asList("a", "b", "c", "d", "e", "f", "g", "h", "i", "j")), + a(List.of(stringArray), + asList(stringArray)) + ).iterator(); + } + + @DataProvider(name="all") + public Iterator all() { + List all = new ArrayList<>(); + empty().forEachRemaining(all::add); + nonempty().forEachRemaining(all::add); + return all.iterator(); + } + + @Test(dataProvider="all", expectedExceptions=UnsupportedOperationException.class) + public void cannotAddLast(List act, List exp) { + act.add("x"); + } + + @Test(dataProvider="all", expectedExceptions=UnsupportedOperationException.class) + public void cannotAddFirst(List act, List exp) { + act.add(0, "x"); + } + + @Test(dataProvider="nonempty", expectedExceptions=UnsupportedOperationException.class) + public void cannotRemove(List act, List exp) { + act.remove(0); + } + + @Test(dataProvider="nonempty", expectedExceptions=UnsupportedOperationException.class) + public void cannotSet(List act, List exp) { + act.set(0, "x"); + } + + @Test(dataProvider="all") + public void contentsMatch(List act, List exp) { + assertEquals(act, exp); + } + + @Test(expectedExceptions=NullPointerException.class) + public void nullDisallowed1() { + List.of((Object)null); // force one-arg overload + } + + @Test(expectedExceptions=NullPointerException.class) + public void nullDisallowed2a() { + List.of("a", null); + } + + @Test(expectedExceptions=NullPointerException.class) + public void nullDisallowed2b() { + List.of(null, "b"); + } + + @Test(expectedExceptions=NullPointerException.class) + public void nullDisallowed3() { + List.of("a", "b", null); + } + + @Test(expectedExceptions=NullPointerException.class) + public void nullDisallowed4() { + List.of("a", "b", "c", null); + } + + @Test(expectedExceptions=NullPointerException.class) + public void nullDisallowed5() { + List.of("a", "b", "c", "d", null); + } + + @Test(expectedExceptions=NullPointerException.class) + public void nullDisallowed6() { + List.of("a", "b", "c", "d", "e", null); + } + + @Test(expectedExceptions=NullPointerException.class) + public void nullDisallowed7() { + List.of("a", "b", "c", "d", "e", "f", null); + } + + @Test(expectedExceptions=NullPointerException.class) + public void nullDisallowed8() { + List.of("a", "b", "c", "d", "e", "f", "g", null); + } + + @Test(expectedExceptions=NullPointerException.class) + public void nullDisallowed9() { + List.of("a", "b", "c", "d", "e", "f", "g", "h", null); + } + + @Test(expectedExceptions=NullPointerException.class) + public void nullDisallowed10() { + List.of("a", "b", "c", "d", "e", "f", "g", "h", "i", null); + } + + @Test(expectedExceptions=NullPointerException.class) + public void nullDisallowedN() { + String[] array = stringArray.clone(); + array[0] = null; + List.of(array); + } + + @Test(dataProvider="all") + public void serialEquality(List act, List exp) { + // assume that act.equals(exp) tested elsewhere + List copy = serialClone(act); + assertEquals(act, copy); + assertEquals(copy, exp); + } + + @SuppressWarnings("unchecked") + static T serialClone(T obj) { + try { + ByteArrayOutputStream baos = new ByteArrayOutputStream(); + ObjectOutputStream oos = new ObjectOutputStream(baos); + oos.writeObject(obj); + oos.close(); + ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray()); + ObjectInputStream ois = new ObjectInputStream(bais); + return (T) ois.readObject(); + } catch (IOException | ClassNotFoundException e) { + throw new AssertionError(e); + } + } +}