/*

 * Copyright (c) 2005, 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

 * @bug     6267846 6275009

 * @summary Test Collections.nCopies

 * @author  Martin Buchholz

 */

public class NCopies {

    static volatile int passed = 0, failed = 0;

    static void fail(String msg) {

        failed++;

        new AssertionError(msg).printStackTrace();

    }

    static void pass() {

        passed++;

    }

    static void unexpected(Throwable t) {

        failed++;

        t.printStackTrace();

    }

    static void check(boolean condition, String msg) {

        if (condition)

            passed++;

        else

            fail(msg);

    }

    static void check(boolean condition) {

        check(condition, "Assertion failure");

    }

    private static void checkEmpty(List<String> x) {

            check(x.isEmpty());

            check(x.size() == 0);

            check(x.indexOf("foo") == -1);

            check(x.lastIndexOf("foo") == -1);

            check(x.toArray().length == 0);

            check(x.toArray().getClass() == Object[].class);

    }

    private static void checkFoos(List<String> x) {

            check(! x.isEmpty());

            check(x.indexOf(new String("foo")) == 0);

            check(x.lastIndexOf(new String("foo")) == x.size()-1);

            check(x.toArray().length == x.size());

            check(x.toArray().getClass() == Object[].class);

            String[] sa = x.toArray(new String[x.size()]);

            check(sa.getClass() == String[].class);

            check(sa[0].equals("foo"));

            check(sa[sa.length-1].equals("foo"));

            check(x.get(x.size()/2).equals("foo"));

            checkEmpty(x.subList(x.size()/2, x.size()/2));

    }

    public static void main(String[] args) {

        try {

            List<String> empty = Collections.nCopies(0, "foo");

            checkEmpty(empty);

            checkEmpty(empty.subList(0,0));

            List<String> foos = Collections.nCopies(42, "foo");

            check(foos.size() == 42);

            checkFoos(foos.subList(foos.size()/2, foos.size()-1));

        } catch (Throwable t) { unexpected(t); }

        System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);

        if (failed > 0) throw new Error("Some tests failed");

    }

}