/*
 * Copyright (c) 2012, 2013, 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.
 */
package org.openjdk.tests.java.util.stream;

import org.openjdk.testlib.java.util.stream.DoubleStreamTestDataProvider;
import org.openjdk.testlib.java.util.stream.IntStreamTestDataProvider;
import org.openjdk.testlib.java.util.stream.LambdaTestHelpers;
import org.openjdk.testlib.java.util.stream.LongStreamTestDataProvider;
import org.openjdk.testlib.java.util.stream.OpTestCase;
import org.openjdk.testlib.java.util.stream.StreamTestDataProvider;
import org.openjdk.testlib.java.util.stream.TestData;

import java.util.stream.BaseStream;
import java.util.stream.Stream;
import java.util.stream.IntStream;
import java.util.stream.LongStream;
import java.util.stream.DoubleStream;

import org.testng.annotations.Test;

public class PrimitiveSumTest extends OpTestCase {

    @Test(dataProvider = "IntStreamTestData", dataProviderClass = IntStreamTestDataProvider.class)
    public void testOps(String name, TestData.OfInt data) {
        exerciseTerminalOps(data, s -> s.sum());

        withData(data).
                terminal(s -> (long) s.sum()).
                expectedResult(data.stream().asLongStream().reduce(0, LambdaTestHelpers.lrPlus)).
                exercise();
    }

    @Test(dataProvider = "LongStreamTestData", dataProviderClass = LongStreamTestDataProvider.class)
    public void testOps(String name, TestData.OfLong data) {
        exerciseTerminalOps(data, s -> s.sum());

        withData(data).
                terminal(s -> s.sum()).
                expectedResult(data.stream().reduce(0, LambdaTestHelpers.lrPlus)).
                exercise();
    }

    // @@@ For Double depending on the input data the average algorithm may produce slightly
    //     different results for the sequential and parallel evaluation.results are within
    //     While the following works at the moment, it could change when double data, not cast from long
    //     values is introduced, or if the sum algorithm is modified.
    @Test(dataProvider = "DoubleStreamTestData", dataProviderClass = DoubleStreamTestDataProvider.class)
    public void testOps(String name, TestData.OfDouble data) {
        exerciseTerminalOps(data, s -> s.sum());

        withData(data).
                terminal(s -> s.sum()).
                expectedResult(data.stream().reduce(0, LambdaTestHelpers.drPlus)).
                exercise();
    }
}

