Java 将数组传递给参数化JUnit

Java 将数组传递给参数化JUnit,java,parameterized,Java,Parameterized,我不熟悉JUnit4.x的参数化特性,但遇到了一个问题。我的参数化测试由3个整数数组组成,我很难声明它们。我下面的内容会生成运行时错误: testGeneral[0] caused an ERROR: argument type mismatch argument type mismatch java.lang.IllegalArgumentException at java.lang.reflect.Constructor.newInstance(Constructor

我不熟悉JUnit4.x的参数化特性,但遇到了一个问题。我的参数化测试由3个整数数组组成,我很难声明它们。我下面的内容会生成运行时错误:

testGeneral[0] caused an ERROR: argument type mismatch
    argument type mismatch
    java.lang.IllegalArgumentException
    at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
testGeneral[1] caused an ERROR: argument type mismatch
    argument type mismatch
    java.lang.IllegalArgumentException
    at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
这是我的密码:

@RunWith(Parameterized.class)
public class MyArrayTest {
    private Integer[] inputList1;
    private Integer[] inputList2;
    private Integer[] expectedList;

    public MyArrayTest(Integer[] li1, Integer[] li2, Integer[] expected) {
        // ========> Runtime error happens here. <=========
        this.inputList1 = li1;
        this.inputList2 = li2;
        this.expectedList = expected;
    }

    @Parameterized.Parameters
    public static Collection testCases() {
        return Arrays.asList(new Object[][][] {
            {{1,1,1}, {2,2,2}, {3,3,3}},
            {{2,2,2}, {3,3,3}, {4,4,4}}
        });
    }

    @Test
    public void testGeneral() {
        // Do some test with this.inputList1, this.inputList2,
        // and verify with this.expectedList
        // I am not even getting here yet.
    }
}
@RunWith(参数化的.class)
公共类MyArrayTest{
私有整数[]输入列表1;
私有整数[]输入列表2;
私有整数[]expectedList;
公共MyArrayTest(需要整数[]li1、整数[]li2、整数[]){

//=======>此处发生运行时错误。失败的原因是测试需要整数数组,而您正在传递对象类型。因此您正在扩展类型。请尝试以下操作:

@Parameterized.Parameters
    public static Collection testCases() {
        return Arrays.asList(new Integer[][][] {
            {{1,1,1}, {2,2,2}, {3,3,3}},
            {{2,2,2}, {3,3,3}, {4,4,4}}
        });
    }
此解决方案使用、实现junitparams.converters.Converter,并将长值列表解析为参数

package example;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.util.Arrays;
import java.util.stream.Collectors;

import org.junit.Test;
import org.junit.runner.RunWith;

import junitparams.JUnitParamsRunner;
import junitparams.Parameters;
import junitparams.converters.ConversionFailedException;
import junitparams.converters.Converter;
import junitparams.converters.Param;

@RunWith(JUnitParamsRunner.class)
public class LongArrayParameterTest {

    @Parameters({ "0|10", "1|10;20;30" })
    @Test
    public void test(final long otherParameter, @LongArrayParam final long[] expected) {
        System.out.println(Arrays.stream(expected).boxed().map(l -> Long.toString(l)).collect(Collectors.toList()));
    }

    @Retention(RetentionPolicy.RUNTIME)
    @Target(ElementType.PARAMETER)
    @Param(converter = LongArrayConverter.class)
    public @interface LongArrayParam {

    }

    public static class LongArrayConverter implements Converter<LongArrayParam, long[]> {

        @Override
        public void initialize(final LongArrayParam annotation) {
        }

        @Override
        public long[] convert(final Object param) throws ConversionFailedException {
            final String str = (String) param;
            final String[] longStrings = str.split(";");
            return Arrays.stream(longStrings).mapToLong(s -> Long.parseLong(s)).toArray();
        }

    }
}
包示例;
导入java.lang.annotation.ElementType;
导入java.lang.annotation.Retention;
导入java.lang.annotation.RetentionPolicy;
导入java.lang.annotation.Target;
导入java.util.array;
导入java.util.stream.collector;
导入org.junit.Test;
导入org.junit.runner.RunWith;
导入junitparams.JUnitParamsRunner;
导入junitparams.Parameters;
导入junitparams.converters.ConversionFailedException;
导入junitparams.converters.Converter;
导入junitparams.converters.Param;
@RunWith(JUnitParamsRunner.class)
公共类LongArrayParameterTest{
@参数({“0 | 10”、“1 | 10;20;30”})
@试验
公共空隙测试(最终长度其他参数,@LongArrayParam最终长度[]预期){
System.out.println(Arrays.stream(预期).boxed().map(l->Long.toString(l)).collect(Collectors.toList());
}
@保留(RetentionPolicy.RUNTIME)
@目标(ElementType.PARAMETER)
@参数(converter=longarayconverter.class)
public@interface longarayparam{
}
公共静态类LongArrayConverter实现转换器{
@凌驾
公共void初始化(最终LongArrayParam注释){
}
@凌驾
公共长[]转换(最终对象参数)抛出ConversionFailedException{
最终字符串str=(字符串)参数;
最终字符串[]longStrings=str.split(“;”);
返回Arrays.stream(longtrings).mapToLong(s->Long.parseLong(s)).toArray();
}
}
}

此解析器不支持空列表。

我觉得自己太笨了。谢谢。如何使用kotlin实现此目的?