java - ND4J JUnit 测试异常

Question

我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());
    }
}

事实上，使用 ND4J 从 main() 运行良好的更复杂的类在测试中也有类似的问题。我的 pom 文件具有以下 ND4J 依赖项:javacpp、nd4j-jblas、nd4j-native-platform、nd4j-native。

谢谢

Answer 1

而不是 ND4J get started 上提到的先决条件页面我按照此处的说明使其正常工作:https://github.com/deeplearning4j/dl4j-examples/blob/master/standalone-sample-project/pom.xml