russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
80 lines
2.8 KiB
Java
80 lines
2.8 KiB
Java
/*
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* Copyright (c) 2016, 2026, 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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* @bug 8155600
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* @summary Tests for Arrays.asList()
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* @run junit AsList
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*/
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import java.util.Arrays;
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import java.util.Iterator;
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import java.util.NoSuchElementException;
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import java.util.stream.IntStream;
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import org.junit.jupiter.api.TestInstance;
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import org.junit.jupiter.params.ParameterizedTest;
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import org.junit.jupiter.params.provider.MethodSource;
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import static org.junit.jupiter.api.Assertions.*;
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@TestInstance(TestInstance.Lifecycle.PER_CLASS)
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public class AsList {
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/*
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* Iterator contract test
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*/
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@ParameterizedTest
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@MethodSource("arrays")
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public void testIterator(Object[] array) {
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Iterator<Object> itr = Arrays.asList(array).iterator();
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for (Object o : array) {
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assertTrue(itr.hasNext());
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assertTrue(itr.hasNext()); // must be idempotent
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assertSame(o, itr.next());
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assertThrows(UnsupportedOperationException.class, itr::remove);
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}
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for (int i = 0; i < 3; i++) {
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assertFalse(itr.hasNext());
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assertThrows(NoSuchElementException.class, itr::next);
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}
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}
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public static Object[][] arrays() {
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return new Object[][] {
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{ new Object[] { } },
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{ new Object[] { 1 } },
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{ new Object[] { null } },
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{ new Object[] { null, 1 } },
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{ new Object[] { 1, null } },
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{ new Object[] { null, null } },
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{ new Object[] { null, 1, 2 } },
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{ new Object[] { 1, null, 2 } },
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{ new Object[] { 1, 2, null } },
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{ new Object[] { null, null, null } },
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{ new Object[] { 1, 2, 3, null, 4 } },
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{ new Object[] { "a", "a", "a", "a" } },
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{ IntStream.range(0, 100).boxed().toArray() }
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};
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}
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}
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