BeanTree

package cn.hutool.core.tree;
import cn.hutool.core.stream.EasyStream;
import lombok.Builder;
import lombok.Data;
import lombok.experimental.Tolerate;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import java.util.Comparator;
import java.util.List;
import static java.util.Arrays.asList;
import static java.util.Collections.singletonList;
/**
 * TreeHelperTest
 *
 * @author VampireAchao
 */
public class BeanTreeTest {
  @Data
  @Builder
  private static class JavaBean {
    @Tolerate
    public JavaBean() {
      // this is an accessible parameterless constructor.
    }
    private String name;
    private Integer age;
    private Long id;
    private Long parentId;
    private List<JavaBean> children;
    private Boolean matchParent;
  }
  List<JavaBean> originJavaBeanList;
  List<JavaBean> originJavaBeanTree;
  BeanTree<JavaBean, Long> beanTree;
  @Before
  public void setUp() {
    originJavaBeanList = EasyStream
        .of(
            JavaBean.builder().id(1L).name("dromara").matchParent(true).build(),
            JavaBean.builder().id(2L).name("baomidou").matchParent(true).build(),
            JavaBean.builder().id(3L).name("hutool").parentId(1L).build(),
            JavaBean.builder().id(4L).name("sa-token").parentId(1L).build(),
            JavaBean.builder().id(5L).name("mybatis-plus").parentId(2L).build(),
            JavaBean.builder().id(6L).name("looly").parentId(3L).build(),
            JavaBean.builder().id(7L).name("click33").parentId(4L).build(),
            JavaBean.builder().id(8L).name("jobob").parentId(5L).build()
        ).toList();
    originJavaBeanTree = asList(
        JavaBean.builder().id(1L).name("dromara").matchParent(true)
            .children(asList(
                JavaBean.builder().id(3L).name("hutool").parentId(1L)
                    .children(singletonList(JavaBean.builder().id(6L).name("looly").parentId(3L).build()))
                    .build(),
                JavaBean.builder().id(4L).name("sa-token").parentId(1L)
                    .children(singletonList(JavaBean.builder().id(7L).name("click33").parentId(4L).build()))
                    .build()))
            .build(),
        JavaBean.builder().id(2L).name("baomidou").matchParent(true)
            .children(singletonList(
                JavaBean.builder().id(5L).name("mybatis-plus").parentId(2L)
                    .children(singletonList(
                        JavaBean.builder().id(8L).name("jobob").parentId(5L).build()
                    ))
                    .build()))
            .build()
    );
    beanTree = BeanTree.of(JavaBean::getId, JavaBean::getParentId, null, JavaBean::getChildren, JavaBean::setChildren);
  }
  @Test
  public void testToTree() {
    final List<JavaBean> javaBeanTree = beanTree.toTree(originJavaBeanList);
    Assert.assertEquals(originJavaBeanTree, javaBeanTree);
    final BeanTree<JavaBean, Long> conditionBeanTree = BeanTree.ofMatch(JavaBean::getId, JavaBean::getParentId, s -> Boolean.TRUE.equals(s.getMatchParent()), JavaBean::getChildren, JavaBean::setChildren);
    Assert.assertEquals(originJavaBeanTree, conditionBeanTree.toTree(originJavaBeanList));
  }
  @Test
  public void testFlat() {
    final List<JavaBean> javaBeanList = beanTree.flat(originJavaBeanTree);
    javaBeanList.sort(Comparator.comparing(JavaBean::getId));
    Assert.assertEquals(originJavaBeanList, javaBeanList);
  }
  @Test
  public void testFilter() {
    final List<JavaBean> javaBeanTree = beanTree.filter(originJavaBeanTree, s -> "looly".equals(s.getName()));
    Assert.assertEquals(singletonList(
            JavaBean.builder().id(1L).name("dromara").matchParent(true)
                .children(singletonList(JavaBean.builder().id(3L).name("hutool").parentId(1L)
                    .children(singletonList(JavaBean.builder().id(6L).name("looly").parentId(3L).build()))
                    .build()))
                .build()),
        javaBeanTree);
  }
  @Test
  public void testForeach() {
    final List<JavaBean> javaBeanList = beanTree.forEach(originJavaBeanTree, s -> s.setName("【open source】" + s.getName()));
    Assert.assertEquals(asList(
        JavaBean.builder().id(1L).name("【open source】dromara").matchParent(true)
            .children(asList(JavaBean.builder().id(3L).name("【open source】hutool").parentId(1L)
                    .children(singletonList(JavaBean.builder().id(6L).name("【open source】looly").parentId(3L).build()))
                    .build(),
                JavaBean.builder().id(4L).name("【open source】sa-token").parentId(1L)
                    .children(singletonList(JavaBean.builder().id(7L).name("【open source】click33").parentId(4L).build()))
                    .build()))
            .build(),
        JavaBean.builder().id(2L).name("【open source】baomidou").matchParent(true)
            .children(singletonList(
                JavaBean.builder().id(5L).name("【open source】mybatis-plus").parentId(2L)
                    .children(singletonList(
                        JavaBean.builder().id(8L).name("【open source】jobob").parentId(5L).build()
                    ))
                    .build()))
            .build()
    ), javaBeanList);
  }
}