The following issues were found

src/test/java/com/alibaba/json/bvt/jdk8/InstantTest.java
3 issues
System.out.println is used
Design

Line: 18 

                      vo.setDate(Instant.now());
        
        String text = JSON.toJSONString(vo);
        System.out.println(text);
        
        VO vo1 = JSON.parseObject(text, VO.class);
        
        Assert.assertEquals(vo.getDate(), vo1.getDate());
    }

Reported by PMD.

JUnit 4 tests that execute tests should use the @Test annotation, JUnit 5 tests should use @Test, @RepeatedTest, @TestFactory, @TestTemplate or @ParameterizedTest
Design

Line: 13 

              
public class InstantTest extends TestCase {

    public void test_for_issue() throws Exception {
        VO vo = new VO();
        vo.setDate(Instant.now());
        
        String text = JSON.toJSONString(vo);
        System.out.println(text);

Reported by PMD.

Potential violation of Law of Demeter (object not created locally)
Design

Line: 22 

                      
        VO vo1 = JSON.parseObject(text, VO.class);
        
        Assert.assertEquals(vo.getDate(), vo1.getDate());
    }

    public static class VO {

        private Instant date;

Reported by PMD.

src/test/java/com/alibaba/json/bvt/issue_1200/Issue1281.java
3 issues
JUnit 4 tests that execute tests should use the @Test annotation, JUnit 5 tests should use @Test, @RepeatedTest, @TestFactory, @TestTemplate or @ParameterizedTest
Design

Line: 14 

               * Created by wenshao on 24/06/2017.
 */
public class Issue1281 extends TestCase {
    public void test_for_issue() throws Exception {
        Type type1 =  new TypeReference<Result<Map<String, Object>>>() {}.getType();
        Type type2 =  new TypeReference<Result<Map<String, Object>>>() {}.getType();
        assertSame(type1, type2);
    }

Reported by PMD.

JUnit assertions should include a message
Design

Line: 17 

                  public void test_for_issue() throws Exception {
        Type type1 =  new TypeReference<Result<Map<String, Object>>>() {}.getType();
        Type type2 =  new TypeReference<Result<Map<String, Object>>>() {}.getType();
        assertSame(type1, type2);
    }

    public static class Result<T> {
        public T value;
    }

Reported by PMD.

Avoid unused imports such as 'com.alibaba.fastjson.JSON'
Design

Line: 3 

              package com.alibaba.json.bvt.issue_1200;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import junit.framework.TestCase;

import java.lang.reflect.Type;
import java.util.Map;

Reported by PMD.

src/test/java/com/alibaba/json/bvt/jdk8/DurationTest.java
3 issues
System.out.println is used
Design

Line: 18 

                      vo.setDate(Duration.ofHours(3));
        
        String text = JSON.toJSONString(vo);
        System.out.println(text);
        
        VO vo1 = JSON.parseObject(text, VO.class);
        
        Assert.assertEquals(vo.getDate(), vo1.getDate());
    }

Reported by PMD.

JUnit 4 tests that execute tests should use the @Test annotation, JUnit 5 tests should use @Test, @RepeatedTest, @TestFactory, @TestTemplate or @ParameterizedTest
Design

Line: 13 

              
public class DurationTest extends TestCase {

    public void test_for_issue() throws Exception {
        VO vo = new VO();
        vo.setDate(Duration.ofHours(3));
        
        String text = JSON.toJSONString(vo);
        System.out.println(text);

Reported by PMD.

Potential violation of Law of Demeter (object not created locally)
Design

Line: 22 

                      
        VO vo1 = JSON.parseObject(text, VO.class);
        
        Assert.assertEquals(vo.getDate(), vo1.getDate());
    }

    public static class VO {

        private Duration date;

Reported by PMD.

src/test/java/com/alibaba/json/bvt/parser/DefaultJSONParserTest_comma.java
3 issues
JUnit 4 tests that execute tests should use the @Test annotation, JUnit 5 tests should use @Test, @RepeatedTest, @TestFactory, @TestTemplate or @ParameterizedTest
Design

Line: 12 

              
public class DefaultJSONParserTest_comma extends TestCase {

    public void test_getInput() {
        String text = "{,,}";
        char[] chars = text.toCharArray();
        DefaultJSONParser parser = new DefaultJSONParser(chars, chars.length, ParserConfig.getGlobalInstance(), 0);

        JSONException error = null;

Reported by PMD.

Potential violation of Law of Demeter (object not created locally)
Design

Line: 14 

              
    public void test_getInput() {
        String text = "{,,}";
        char[] chars = text.toCharArray();
        DefaultJSONParser parser = new DefaultJSONParser(chars, chars.length, ParserConfig.getGlobalInstance(), 0);

        JSONException error = null;
        try {
            parser.parseObject();

Reported by PMD.

Found 'DD'-anomaly for variable 'error' (lines '17'-'21').
Error

Line: 17 

                      char[] chars = text.toCharArray();
        DefaultJSONParser parser = new DefaultJSONParser(chars, chars.length, ParserConfig.getGlobalInstance(), 0);

        JSONException error = null;
        try {
            parser.parseObject();
        } catch (JSONException ex) {
            error = ex;
        }

Reported by PMD.

src/test/java/com/alibaba/json/bvt/date/DateTest_dotnet.java
3 issues
JUnit 4 tests that execute tests should use the @Test annotation, JUnit 5 tests should use @Test, @RepeatedTest, @TestFactory, @TestTemplate or @ParameterizedTest
Design

Line: 12 

              import junit.framework.TestCase;

public class DateTest_dotnet extends TestCase {
    public void test_date() throws Exception {
        String text = "{\"date\":\"/Date(1461081600000)/\"}";
        
        Model model = JSON.parseObject(text, Model.class);
        Assert.assertEquals(1461081600000L, model.date.getTime());
    }

Reported by PMD.

Potential violation of Law of Demeter (static property access)
Design

Line: 16 

                      String text = "{\"date\":\"/Date(1461081600000)/\"}";
        
        Model model = JSON.parseObject(text, Model.class);
        Assert.assertEquals(1461081600000L, model.date.getTime());
    }
    
    public static class Model {
        public Date date;
    }

Reported by PMD.

Found non-transient, non-static member. Please mark as transient or provide accessors.
Error

Line: 20 

                  }
    
    public static class Model {
        public Date date;
    }
}

Reported by PMD.

src/test/java/com/alibaba/json/bvt/jdk8/DoubleAdderTest.java
3 issues
JUnit 4 tests that execute tests should use the @Test annotation, JUnit 5 tests should use @Test, @RepeatedTest, @TestFactory, @TestTemplate or @ParameterizedTest
Design

Line: 13 

               * Created by wenshao on 14/03/2017.
 */
public class DoubleAdderTest extends TestCase {
    public void test_long_add() throws Exception {
        DoubleAdder adder = new DoubleAdder();
        adder.add(3);

        String json = JSON.toJSONString(adder);
        assertEquals("{\"value\":3.0}", json);

Reported by PMD.

JUnit assertions should include a message
Design

Line: 18 

                      adder.add(3);

        String json = JSON.toJSONString(adder);
        assertEquals("{\"value\":3.0}", json);
    }
}

Reported by PMD.

Avoid unused imports such as 'java.util.concurrent.atomic.LongAdder'
Design

Line: 7 

              import junit.framework.TestCase;

import java.util.concurrent.atomic.DoubleAdder;
import java.util.concurrent.atomic.LongAdder;

/**
 * Created by wenshao on 14/03/2017.
 */
public class DoubleAdderTest extends TestCase {

Reported by PMD.

src/test/java/com/alibaba/json/bvt/issue_3600/Issue3682.java
3 issues
System.out.println is used
Design

Line: 11 

              public class Issue3682 extends TestCase {
    public void test_for_issue() throws Exception {
        Cid cid = JSON.parseObject(SOURCE, Cid.class);
        System.out.println(cid);
    }

    @Data
    static public class Cid {

Reported by PMD.

JUnit 4 tests that execute tests should use the @Test annotation, JUnit 5 tests should use @Test, @RepeatedTest, @TestFactory, @TestTemplate or @ParameterizedTest
Design

Line: 9 

              import lombok.Data;

public class Issue3682 extends TestCase {
    public void test_for_issue() throws Exception {
        Cid cid = JSON.parseObject(SOURCE, Cid.class);
        System.out.println(cid);
    }

    @Data

Reported by PMD.

JUnit tests should include assert() or fail()
Design

Line: 9 

              import lombok.Data;

public class Issue3682 extends TestCase {
    public void test_for_issue() throws Exception {
        Cid cid = JSON.parseObject(SOURCE, Cid.class);
        System.out.println(cid);
    }

    @Data

Reported by PMD.

src/test/java/com/alibaba/json/bvt/parser/creator/JSONCreatorTest_default_boolean.java
3 issues
JUnit 4 tests that execute tests should use the @Test annotation, JUnit 5 tests should use @Test, @RepeatedTest, @TestFactory, @TestTemplate or @ParameterizedTest
Design

Line: 11 

              
public class JSONCreatorTest_default_boolean extends TestCase {

    public void test_create() throws Exception {
        Model model = JSON.parseObject("{\"name\":\"wenshao\"}", Model.class);
        Assert.assertFalse(model.id);
        Assert.assertEquals("wenshao", model.name);
    }

Reported by PMD.

Found non-transient, non-static member. Please mark as transient or provide accessors.
Error

Line: 20 

              
    public static class Model {

        private final boolean id;
        private final String name;

        @JSONCreator
        public Model(@JSONField(name="id") boolean id, @JSONField(name="name") String name) {
            this.id = id;

Reported by PMD.

Found non-transient, non-static member. Please mark as transient or provide accessors.
Error

Line: 21 

                  public static class Model {

        private final boolean id;
        private final String name;

        @JSONCreator
        public Model(@JSONField(name="id") boolean id, @JSONField(name="name") String name) {
            this.id = id;
            this.name = name;

Reported by PMD.

src/test/java/com/alibaba/json/bvt/parser/FeatureCountTest.java
3 issues
System.out.println is used
Design

Line: 9 

              public class FeatureCountTest extends TestCase {
    public void testZ_0() throws Exception {
        Feature[] features = Feature.class.getEnumConstants();
        System.out.println(features.length);
        assertTrue(features.length < 32);
    }
}

Reported by PMD.

JUnit 4 tests that execute tests should use the @Test annotation, JUnit 5 tests should use @Test, @RepeatedTest, @TestFactory, @TestTemplate or @ParameterizedTest
Design

Line: 7 

              import junit.framework.TestCase;

public class FeatureCountTest extends TestCase {
    public void testZ_0() throws Exception {
        Feature[] features = Feature.class.getEnumConstants();
        System.out.println(features.length);
        assertTrue(features.length < 32);
    }
}

Reported by PMD.

JUnit assertions should include a message
Design

Line: 10 

                  public void testZ_0() throws Exception {
        Feature[] features = Feature.class.getEnumConstants();
        System.out.println(features.length);
        assertTrue(features.length < 32);
    }
}

Reported by PMD.

src/test/java/com/alibaba/json/bvt/issue_1200/Issue1222_1.java
3 issues
JUnit 4 tests that execute tests should use the @Test annotation, JUnit 5 tests should use @Test, @RepeatedTest, @TestFactory, @TestTemplate or @ParameterizedTest
Design

Line: 12 

               * Created by wenshao on 01/06/2017.
 */
public class Issue1222_1 extends TestCase {
    public void test_for_issue() throws Exception {
        Model model = new Model();
        model.type = Type.A;
        String text = JSON.toJSONString(model, SerializerFeature.WriteEnumUsingToString);
        assertEquals("{\"type\":\"TypeA\"}", text);
    }

Reported by PMD.

JUnit assertions should include a message
Design

Line: 16 

                      Model model = new Model();
        model.type = Type.A;
        String text = JSON.toJSONString(model, SerializerFeature.WriteEnumUsingToString);
        assertEquals("{\"type\":\"TypeA\"}", text);
    }

    private static class Model {
        public Type type;
    }

Reported by PMD.

Found non-transient, non-static member. Please mark as transient or provide accessors.
Error

Line: 20 

                  }

    private static class Model {
        public Type type;
    }

    private static enum Type implements JSONAware {
        A, B;

Reported by PMD.