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package com.fasterxml.jackson.databind;
import java.io.*;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
public class TestNodeJDKSerialization extends BaseMapTest
{
private final ObjectMapper MAPPER = newJsonMapper();
/*
/**********************************************************
/* Then something bit different; serialize `JsonNode`(s)
/**********************************************************
*/
// [databind#18]: Allow JDK serialization of `ObjectNode`
public void testObjectNodeSerialization() throws Exception
{
ObjectNode root = MAPPER.createObjectNode();
root.put("answer", 42);
ArrayNode arr = root.withArray("matrix");
arr.add(1).add(12345678901L).add(true).add("...");
ObjectNode misc = root.with("misc");
misc.put("value", 0.25);
testNodeRoundtrip(root);
}
// [databind#18]: Allow JDK serialization of `ArrayNode`
public void testArrayNodeSerialization() throws Exception
{
ArrayNode root = MAPPER.createArrayNode();
root.add(false);
ObjectNode props = root.addObject();
props.put("answer", 42);
root.add(137);
testNodeRoundtrip(root);
}
// and then also some scalar types
public void testScalarSerialization() throws Exception
{
testNodeRoundtrip(MAPPER.getNodeFactory().nullNode());
testNodeRoundtrip(MAPPER.getNodeFactory().textNode("Foobar"));
testNodeRoundtrip(MAPPER.getNodeFactory().booleanNode(true));
testNodeRoundtrip(MAPPER.getNodeFactory().booleanNode(false));
testNodeRoundtrip(MAPPER.getNodeFactory().numberNode(123));
testNodeRoundtrip(MAPPER.getNodeFactory().numberNode(-12345678901234L));
}
/*
/**********************************************************
/* Helper methods
/**********************************************************
*/
protected void testNodeRoundtrip(JsonNode input) throws Exception
{
byte[] ser = jdkSerialize(input);
JsonNode result = jdkDeserialize(ser);
assertEquals(input, result);
}
protected byte[] jdkSerialize(Object o) throws IOException
{
ByteArrayOutputStream bytes = new ByteArrayOutputStream(1000);
ObjectOutputStream obOut = new ObjectOutputStream(bytes);
obOut.writeObject(o);
obOut.close();
return bytes.toByteArray();
}
@SuppressWarnings("unchecked")
protected <T> T jdkDeserialize(byte[] raw) throws IOException
{
ObjectInputStream objIn = new ObjectInputStream(new ByteArrayInputStream(raw));
try {
return (T) objIn.readObject();
} catch (ClassNotFoundException e) {
fail("Missing class: "+e.getMessage());
return null;
} finally {
objIn.close();
}
}
}
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