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/* |
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* Copyright (c) 2005, 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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/* |
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* @test |
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* @bug 6267846 6275009 |
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* @summary Test Collections.nCopies |
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* @author Martin Buchholz |
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*/ |
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|
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import java.util.Collections; |
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import java.util.List; |
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|
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public class NCopies { |
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static volatile int passed = 0, failed = 0; |
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|
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static void fail(String msg) { |
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failed++; |
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new AssertionError(msg).printStackTrace(); |
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} |
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|
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static void pass() { |
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passed++; |
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} |
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|
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static void unexpected(Throwable t) { |
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failed++; |
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t.printStackTrace(); |
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} |
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|
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static void check(boolean condition, String msg) { |
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if (condition) |
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passed++; |
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else |
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fail(msg); |
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} |
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|
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static void check(boolean condition) { |
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check(condition, "Assertion failure"); |
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} |
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|
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private static void checkEmpty(List<String> x) { |
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check(x.isEmpty()); |
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check(x.size() == 0); |
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check(x.indexOf("foo") == -1); |
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check(x.lastIndexOf("foo") == -1); |
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check(x.toArray().length == 0); |
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check(x.toArray().getClass() == Object[].class); |
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} |
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|
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private static void checkFoos(List<String> x) { |
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check(! x.isEmpty()); |
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check(x.indexOf(new String("foo")) == 0); |
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check(x.lastIndexOf(new String("foo")) == x.size()-1); |
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check(x.toArray().length == x.size()); |
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check(x.toArray().getClass() == Object[].class); |
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String[] sa = x.toArray(new String[x.size()]); |
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check(sa.getClass() == String[].class); |
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check(sa[0].equals("foo")); |
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check(sa[sa.length-1].equals("foo")); |
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check(x.get(x.size()/2).equals("foo")); |
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checkEmpty(x.subList(x.size()/2, x.size()/2)); |
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} |
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|
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public static void main(String[] args) { |
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try { |
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List<String> empty = Collections.nCopies(0, "foo"); |
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checkEmpty(empty); |
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checkEmpty(empty.subList(0,0)); |
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|
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List<String> foos = Collections.nCopies(42, "foo"); |
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check(foos.size() == 42); |
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checkFoos(foos.subList(foos.size()/2, foos.size()-1)); |
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|
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} catch (Throwable t) { unexpected(t); } |
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|
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System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); |
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if (failed > 0) throw new Error("Some tests failed"); |
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} |
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} |
