BigDecimal(140001.12) about bson4jackson HOT 5 CLOSED

public class Person {
    private String name;
    private BigDecimal wage;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public BigDecimal getWage() {
        return wage;
    }

    public void setWage(BigDecimal wage) {
        this.wage = wage;
    }
}

import com.fasterxml.jackson.databind.ObjectMapper;
import de.undercouch.bson4jackson.BsonFactory;
import de.undercouch.bson4jackson.BsonGenerator;
import org.junit.Test;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.math.BigDecimal;

import static org.junit.Assert.*;

/**
 * Created by van on 5/12/15.
 */
public class BigDecimalTest {

    @Test
    public void testNewBigDecimalWithDouble() {
        Person p = new Person();
        p.setName("Van Fan");
        p.setWage(new BigDecimal(140001.12d));
        try {
            ObjectMapper mapper = new ObjectMapper(new BsonFactory());

            ByteArrayOutputStream baos = new ByteArrayOutputStream();

            mapper.writeValue(baos, p);


            ByteArrayInputStream bais = new ByteArrayInputStream(
                    baos.toByteArray());
            Person person = mapper.readValue(bais, Person.class);

            assertEquals(p.getName(), person.getName());
            assertEquals(p.getWage(), person.getWage());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Test
    public void testBigDecimalValueOfDouble() {
        Person p = new Person();
        p.setName("Van Fan");
        p.setWage(BigDecimal.valueOf(140001.12d));
        try {
            ObjectMapper mapper = new ObjectMapper(new BsonFactory());

            ByteArrayOutputStream baos = new ByteArrayOutputStream();

            mapper.writeValue(baos, p);


            ByteArrayInputStream bais = new ByteArrayInputStream(
                    baos.toByteArray());
            Person person = mapper.readValue(bais, Person.class);

            assertEquals(p.getName(), person.getName());
            assertEquals(p.getWage(), person.getWage());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Test
    public void testNewBigDecimalWithDoubleWithFeatureWRITE_BIGDECIMALS_AS_STRINGS() {
        Person p = new Person();
        p.setName("Van Fan");
        p.setWage(new BigDecimal(140001.12d));
        try {
            ObjectMapper mapper = new ObjectMapper(
                    new BsonFactory().configure(BsonGenerator.Feature.WRITE_BIGDECIMALS_AS_STRINGS, true));

            ByteArrayOutputStream baos = new ByteArrayOutputStream();

            mapper.writeValue(baos, p);


            ByteArrayInputStream bais = new ByteArrayInputStream(
                    baos.toByteArray());
            Person person = mapper.readValue(bais, Person.class);

            assertEquals(p.getName(), person.getName());
            assertEquals(p.getWage(), person.getWage());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Test
    public void testBigDecimalValueOfDoubleWithFeatureWRITE_BIGDECIMALS_AS_STRINGS() {
        Person p = new Person();
        p.setName("Van Fan");
        p.setWage(BigDecimal.valueOf(140001.12d));
        try {
            ObjectMapper mapper = new ObjectMapper(
                    new BsonFactory().configure(BsonGenerator.Feature.WRITE_BIGDECIMALS_AS_STRINGS, true));

            ByteArrayOutputStream baos = new ByteArrayOutputStream();

            mapper.writeValue(baos, p);


            ByteArrayInputStream bais = new ByteArrayInputStream(
                    baos.toByteArray());
            Person person = mapper.readValue(bais, Person.class);

            assertEquals(p.getName(), person.getName());
            assertEquals(p.getWage(), person.getWage());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

java> new BigDecimal(140001.12d)
java.math.BigDecimal res0 = 140001.119999999995343387126922607421875