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 *  *  information regarding copyright ownership.
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package org.eclipse.deeplearning4j.dl4jcore.util;

import org.deeplearning4j.BaseDL4JTest;
import org.deeplearning4j.core.util.MovingWindowMatrix;
import org.junit.jupiter.api.Tag;
import org.junit.jupiter.api.Test;
import org.nd4j.common.tests.tags.NativeTag;
import org.nd4j.common.tests.tags.TagNames;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.factory.Nd4j;
import java.util.List;
import static org.junit.jupiter.api.Assertions.assertEquals;
import org.junit.jupiter.api.DisplayName;

@DisplayName("Moving Window Matrix Test")
@NativeTag
@Tag(TagNames.NDARRAY_ETL)
class MovingWindowMatrixTest extends BaseDL4JTest {

    @Test
    @DisplayName("Test Moving Window")
    void testMovingWindow() {
        INDArray ones = Nd4j.ones(4, 4);
        MovingWindowMatrix m = new MovingWindowMatrix(ones, 2, 2);
        List<INDArray> windows = m.windows();
        assertEquals(4, windows.size());
        MovingWindowMatrix m2 = new MovingWindowMatrix(ones, 2, 2, true);
        List<INDArray> windowsRotate = m2.windows();
        assertEquals(16, windowsRotate.size());
    }
}
