cavis/python4j/python4j-numpy/src/test/java/PythonNumpyCollectionsTest.java

/*******************************************************************************
 * Copyright (c) 2020 Konduit K.K.
 *
 * 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.
 *
 * 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.
 *
 * SPDX-License-Identifier: Apache-2.0
 ******************************************************************************/


import org.nd4j.python4j.PythonException;
import org.nd4j.python4j.PythonObject;
import org.nd4j.python4j.PythonTypes;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.nd4j.linalg.api.buffer.DataType;
import org.nd4j.linalg.factory.Nd4j;

import javax.annotation.concurrent.NotThreadSafe;
import java.util.*;


@NotThreadSafe
@RunWith(Parameterized.class)
public class PythonNumpyCollectionsTest {
    private DataType dataType;

    public PythonNumpyCollectionsTest(DataType dataType){
        this.dataType = dataType;
    }

    @Parameterized.Parameters(name = "{index}: Testing with DataType={0}")
    public static DataType[] params() {
        return new DataType[]{
                DataType.BOOL,
                DataType.FLOAT16,
                //DataType.BFLOAT16,
                DataType.FLOAT,
                DataType.DOUBLE,
                DataType.INT8,
                DataType.INT16,
                DataType.INT32,
                DataType.INT64,
                DataType.UINT8,
                DataType.UINT16,
                DataType.UINT32,
                DataType.UINT64
        };
    }
        @Test
    public void testPythonDictFromMap() throws PythonException {
        Map map = new HashMap();
        map.put("a", 1);
        map.put(1, "a");
        map.put("arr", Nd4j.ones(dataType, 2, 3));
        map.put("list1", Arrays.asList(1, 2.0, 3, 4f, Nd4j.zeros(dataType,3,2)));
        Map innerMap = new HashMap();
        innerMap.put("b", 2);
        innerMap.put(2, "b");
        innerMap.put(5, Nd4j.ones(dataType, 5));
        map.put("innermap", innerMap);
        map.put("list2", Arrays.asList(4, "5", innerMap, false, true));
        PythonObject dict = PythonTypes.convert(map);
        Map map2 = PythonTypes.DICT.toJava(dict);
        Assert.assertEquals(map.toString(), map2.toString());
    }

    @Test
    public void testPythonListFromList() throws PythonException{
        List<Object> list = new ArrayList<>();
        list.add(1);
        list.add("2");
        list.add(Nd4j.ones(dataType, 2, 3));
        list.add(Arrays.asList("a",
                Nd4j.ones(dataType, 1, 2),1.0, 2f, 10, true, false,
                Nd4j.zeros(dataType, 3, 2)));
        Map map = new HashMap();
        map.put("a", 1);
        map.put(1, "a");
        map.put(5, Nd4j.ones(dataType,4, 5));
        map.put("list1", Arrays.asList(1, 2.0, 3, 4f, Nd4j.zeros(dataType, 3, 1)));
        list.add(map);
        PythonObject dict = PythonTypes.convert(list);
        List list2 = PythonTypes.LIST.toJava(dict);
        Assert.assertEquals(list.toString(), list2.toString());
    }
}