单元测试(UT)工具：一键测试所有Bean/DTO的SetGet方法

1、引入依赖

 引入jmockdata

        
            com.github.jsonzou
            jmockdata
            4.1.2
            test
        

2、引入工具类

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.github.jsonzou.jmockdata.DataConfig;
import com.github.jsonzou.jmockdata.JMockData;
import com.github.jsonzou.jmockdata.MockConfig;
import com.github.jsonzou.jmockdata.Mocker;
import lombok.extern.slf4j.Slf4j;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;
import org.springframework.core.type.classreading.CachingMetadataReaderFactory;
import org.springframework.core.type.classreading.MetadataReader;
import org.springframework.core.type.classreading.MetadataReaderFactory;
import org.springframework.util.Assert;
import org.springframework.util.SystemPropertyUtils;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;


@Slf4j
public class BeanTestUtils {

    private static final FixedStringMocker STRING_MOCKER = new FixedStringMocker();

    private static final MockConfig mockConfig = MockConfig.newInstance();

    private static final List initialExcludeFieldNames = new ArrayList<>();

    private static final ObjectMapper objectMapper = new ObjectMapper();

    private static ResourcePatternResolver resourcePatternResolver = new PathMatchingResourcePatternResolver();

    private static MetadataReaderFactory metadataReaderFactory = new CachingMetadataReaderFactory(resourcePatternResolver);


    static {
        initialExcludeFieldNames.add("$jacocoData");
        initialExcludeFieldNames.add("serialVersionUID");
        mockConfig.registerMocker(STRING_MOCKER, String.class);
        mockConfig.sizeRange(0, 1);

    }

    public static void testPackages(List packages, List excludeFieldNames) {
        List> classes = scanClasses(packages);
        classes.stream().parallel().forEach(clazz -> {
            try {
                doGetSetTest(mockBean(clazz, excludeFieldNames));
            } catch (Exception e) {
                log.info(clazz.getName() + "getSet Test Error", e);
            }
        });
    }

    private static final MockConfig getMockConfig(List excludeFieldNames) {
        excludeFieldNames.addAll(initialExcludeFieldNames);
        mockConfig.excludes(excludeFieldNames.toArray(new String[excludeFieldNames.size()]));
        return mockConfig;
    }

    private static  T mockBean(Class beanClazz, List excludeFieldNames) {
        Assert.notNull(beanClazz, "beanClazz can not be null");

        MockConfig mockConfig = getMockConfig(excludeFieldNames);
        T bean = null;
        try {
            bean = JMockData.mock(beanClazz, mockConfig);
        } catch (Exception e) {
            throw new IllegalArgumentException(e);
        }
        return bean;
    }

    private static class FixedStringMocker implements Mocker {
        @Override
        public String mock(DataConfig mockConfig) {
            return "mock data string";
        }
    }

    private static ObjectMapper getObjectMapper() {
        return objectMapper.disable(SerializationFeature.FAIL_ON_EMPTY_BEANS);
    }

    private static void doGetSetTest(Object o) {
        String jsonStr = null;
        try {
            jsonStr = getObjectMapper().writeValueAsString(o);
        } catch (JsonProcessingException e) {
            e.printStackTrace();
            org.junit.Assert.assertNotNull(jsonStr);
        }
        org.junit.Assert.assertNotNull(jsonStr);
    }

    private static List> scanClasses(List packages) {
        List> modelClazzList = new ArrayList<>();
        packages.stream().forEach(modelPackage -> {
            String packageSearchPath = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX
                + org.springframework.util.ClassUtils.convertClassNameToResourcePath(
                SystemPropertyUtils.resolvePlaceholders(modelPackage)) + "/*.class";
            Resource[] resources = null;
            try {
                resources = resourcePatternResolver.getResources(packageSearchPath);
            } catch (IOException e) {
                log.error("Can not get reources from [{}]", packageSearchPath, e);
            }
            for (Resource resource : resources) {
                if (resource.isReadable()) {
                    MetadataReader metadataReader = null;
                    try {
                        metadataReader = metadataReaderFactory.getMetadataReader(resource);
                    } catch (IOException e1) {
                        log.error("Can not found metaReader", e1);
                        continue;
                    }
                    Class modelClazz = null;
                    try {
                        modelClazz = Class.forName(metadataReader.getClassMetadata().getClassName());
                        if (!modelClazz.isInterface()) {
                            modelClazzList.add(modelClazz);
                        }
                    } catch (ClassNotFoundException e) {
                        log.warn("Class [{}] not found just ignore.", modelClazz);
                    }
                }
            }
        });
        return modelClazzList;
    }

}

3、测试类调用

支持使用表达式com.test.dto.**

@Slf4j
public class TestAllDto {

    @Test
    public void dtoTest() {
        List packages = Lists.newArrayList("com.test.dto","com.test.dto.req","com.test.dto.resp");
        List excludeFieldNames = Lists.newArrayList("aaa", "bbb", "ccc");
        BeanTestUtils.testPackages(packages, excludeFieldNames);
        Assert.assertNotNull(new DtoTestUtils());
    }

}