我编写了一个简单的类,并在main()中对其进行了手动测试,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();
    }
}


但是尝试使用JUnit 4对此类进行单元测试会抛出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());
    }
}


实际上,使用ND4J且从main()运行良好的更复杂的类在测试中也存在类似的问题。我的pom文件具有以下ND4J依赖项:javacpp,nd4j-jblas,nd4j-native-platform,nd4j-native。

谢谢

最佳答案

我没有按照ND4J get started页上提到的先决条件进行操作,而是通过遵循此处的指示进行操作:https://github.com/deeplearning4j/dl4j-examples/blob/master/standalone-sample-project/pom.xml

09-13 05:17