/*
 * Licensed to Crate under one or more contributor license agreements.
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.  Crate licenses this file
 * to you under the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.  You may
 * obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied.  See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * However, if you have executed another commercial license agreement
 * with Crate these terms will supersede the license and you may use the
 * software solely pursuant to the terms of the relevant commercial
 * agreement.
 */

package io.crate.core.collections;

import com.google.common.collect.ImmutableSet;
import io.crate.test.integration.CrateUnitTest;
import org.junit.Test;

import java.util.concurrent.atomic.AtomicInteger;

import static org.hamcrest.Matchers.is;

public class ForEachTest extends CrateUnitTest {

    private void assertForEachCalledOnAllElements(Object elements, int expected) {
        final AtomicInteger sum = new AtomicInteger(0);
        ForEach.forEach(elements, new ForEach.Acceptor() {
            @Override
            public void accept(Object value) {
                sum.getAndAdd((int) value);
            }
        });
        assertThat(sum.get(), is(expected));
    }

    @Test
    public void testPrimitiveArray() throws Exception {
        int[] array = new int[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
        assertForEachCalledOnAllElements(array, 55);
    }

    @Test
    public void testEmptyPrimitiveArray() throws Exception {
        int[] array = new int[0];
        assertForEachCalledOnAllElements(array, 0);
    }

    @Test
    public void testArray() throws Exception {
        Integer[] array = new Integer[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
        assertForEachCalledOnAllElements(array, 55);
    }

    @Test
    public void testCollection() throws Exception {
        ImmutableSet<Integer> set = ImmutableSet.of(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
        assertForEachCalledOnAllElements(set, 55);
    }
}