ND4J JUnit测试异常

Question

我已经编写了一个简单的类，并在main()中手动测试它，并按预期工作：

import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.factory.Nd4j;

public class ND4J {
    public static void main(String[] args) {
        ND4J actualObject = new ND4J(Nd4j.zeros(2,2).add(4.0));
        INDArray testObject = Nd4j.create(new double[][]{{4.0,4.0}, {4.0,4.0}});
        if(testObject.equals(actualObject.getMatrix())){
            System.out.println("OK"); // prints “OK”
        }
    }
    private INDArray matrix;
    public ND4J (INDArray matrix){
        this.matrix = matrix;
    }
    public INDArray getMatrix(){
        return this.matrix;
    }
    public String toString(){
        return this.getMatrix().toString();
    }
}

但是尝试用JUnit 4对这个类进行单元测试是在抛出java.lang.AbstractMethodError：

import org.junit.Test;
import org.junit.runner.RunWith;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.factory.Nd4j;
import static org.junit.Assert.*;
public class ND4JTest {
    @Test
    public void print() {
        ND4J actualObject = new ND4J(Nd4j.zeros(2,2).add(4.0));
        //above statement throws this error
        //java.lang.AbstractMethodError: org.nd4j.linalg.factory.Nd4jBackend.getConfigurationResource()Lorg/springframework/core/io/Resource;
        INDArray testObject = Nd4j.create(new double[][]{{4.0,4.0}, {4.0,4.0}});
        assertEquals(testObject, actualObject.getMatrix());
    }
}

事实上，使用ND4J的更复杂的类在main()中运行良好，在测试中也遇到了类似的问题。我的pom文件有以下本机依赖项: javacpp，nd4j-jblas，ND4J -ND4J-platform，nd4j-native。

谢谢

Answer 1

我没有使用ND4J get started页面上提到的前提条件，而是按照下面的说明让它正常工作：https://github.com/deeplearning4j/dl4j-examples/blob/master/standalone-sample-project/pom.xml