/*
 *  ******************************************************************************
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 *  *
 *  * This program and the accompanying materials are made available under the
 *  * terms of the Apache License, Version 2.0 which is available at
 *  * https://www.apache.org/licenses/LICENSE-2.0.
 *  *
 *  *  See the NOTICE file distributed with this work for additional
 *  *  information regarding copyright ownership.
 *  * 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.
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 *  * SPDX-License-Identifier: Apache-2.0
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package org.eclipse.deeplearning4j.nd4j.linalg.shape.ones;

import org.junit.jupiter.api.Tag;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.MethodSource;

import org.nd4j.common.tests.tags.NativeTag;
import org.nd4j.common.tests.tags.TagNames;
import org.nd4j.linalg.BaseNd4jTestWithBackends;
import org.nd4j.linalg.api.buffer.DataType;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.factory.Nd4j;
import org.nd4j.linalg.factory.Nd4jBackend;

import java.util.ArrayList;
import java.util.List;

import static org.junit.jupiter.api.Assertions.assertEquals;

/**
 * @author Adam Gibson
 */
@NativeTag
@Tag(TagNames.NDARRAY_INDEXING)
public class LeadingAndTrailingOnes extends BaseNd4jTestWithBackends {


    @ParameterizedTest
    @MethodSource("org.nd4j.linalg.BaseNd4jTestWithBackends#configs")
    public void testSliceConstructor(Nd4jBackend backend) {
        List<INDArray> testList = new ArrayList<>();
        for (int i = 0; i < 5; i++)
            testList.add(Nd4j.scalar(DataType.DOUBLE, i + 1));

        INDArray test = Nd4j.create(testList, new int[] {1, testList.size()});
        INDArray expected = Nd4j.create(new double[] {1, 2, 3, 4, 5}, new int[] {1, 5});
        assertEquals(expected, test);
    }

    @ParameterizedTest
    @MethodSource("org.nd4j.linalg.BaseNd4jTestWithBackends#configs")
    public void testLeadAndTrail(Nd4jBackend backend) {
        INDArray fourD = Nd4j.create(1, 2, 1, 1);
        assertEquals(2, fourD.length());
        for (int i = 0; i < fourD.length(); i++)
            assertEquals(0.0, fourD.getDouble(i), 1e-1);

    }

    @ParameterizedTest
    @MethodSource("org.nd4j.linalg.BaseNd4jTestWithBackends#configs")
    public void testCreateLeadingAndTrailingOnes(Nd4jBackend backend) {
        INDArray arr = Nd4j.create(1, 10, 1, 1);
        arr.assign(1);
        arr.toString();
//        System.out.println(arr);
    }


    @Override
    public char ordering() {
        return 'f';
    }
}
