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 *  *  information regarding copyright ownership.
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 *  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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package org.eclipse.deeplearning4j.dl4jcore.parallelism;

import org.deeplearning4j.BaseDL4JTest;
import org.deeplearning4j.core.parallelism.AsyncIterator;
import org.junit.jupiter.api.Tag;
import org.junit.jupiter.api.Test;
import java.util.ArrayList;
import static org.junit.jupiter.api.Assertions.assertEquals;
import org.junit.jupiter.api.DisplayName;
import org.nd4j.common.tests.tags.NativeTag;
import org.nd4j.common.tests.tags.TagNames;

@DisplayName("Async Iterator Test")
@NativeTag
@Tag(TagNames.DL4J_OLD_API)
class AsyncIteratorTest extends BaseDL4JTest {

    @Test
    @DisplayName("Has Next")
    void hasNext() throws Exception {
        ArrayList<Integer> integers = new ArrayList<>();
        for (int x = 0; x < 100000; x++) {
            integers.add(x);
        }
        AsyncIterator<Integer> iterator = new AsyncIterator<>(integers.iterator(), 512);
        int cnt = 0;
        Integer val = null;
        while (iterator.hasNext()) {
            val = iterator.next();
            assertEquals(cnt, val.intValue());
            cnt++;
        }
        System.out.println("Last val: " + val);
        assertEquals(integers.size(), cnt);
    }
}
