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 * Copyright (c) 2016, 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
 * @summary flat-map operations
 * @bug 8044047 8076458
 */

package org.openjdk.tests.java.util.stream;

import org.testng.annotations.Test;

import java.util.Collection;
import java.util.Collections;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.LongStream;
import java.util.stream.LongStreamTestDataProvider;
import java.util.stream.OpTestCase;
import java.util.stream.TestData;

import static java.util.stream.LambdaTestHelpers.*;

@Test
public class FlatMapLongOpTest extends OpTestCase {

    @Test
    public void testLongClose() {
        AtomicInteger before = new AtomicInteger();
        AtomicInteger onClose = new AtomicInteger();

        LongStream.of(1, 2).peek(e -> before.getAndIncrement()).
                flatMap(i -> LongStream.of(i, i).onClose(onClose::getAndIncrement)).count();
        assertEquals(before.get(), onClose.get());
    }

    @Test(dataProvider = "LongStreamTestData", dataProviderClass = LongStreamTestDataProvider.class)
    public void testLongOps(String name, TestData.OfLong data) {
        Collection<Long> result = exerciseOps(data, s -> s.flatMap(i -> Collections.singleton(i).stream().mapToLong(j -> j)));
        assertEquals(data.size(), result.size());
        assertContents(data, result);

        result = exerciseOps(data, s -> LongStream.empty());
        assertEquals(0, result.size());

        exerciseOps(data, s -> s.flatMap(e -> LongStream.range(0, e)));
        exerciseOps(data, s -> s.flatMap(e -> LongStream.range(0, e).limit(10)));
    }
}