package org.codehaus.jackson.node;
import java.io.IOException;
import static org.junit.Assert.*;
import org.codehaus.jackson.*;
import org.codehaus.jackson.map.*;
import org.codehaus.jackson.map.annotate.JsonDeserialize;
import org.codehaus.jackson.util.TokenBuffer;
import org.junit.Assert;
/**
* Unit tests for verifying functionality of {@link JsonNode} methods that
* convert values to other types
*
* @since 1.7
*/
public class TestConversions extends BaseMapTest
{
static class Root {
public Leaf leaf;
}
static class Leaf {
public int value;
}
// MixIn for [JACKSON-554]
@JsonDeserialize(using = LeafDeserializer.class)
public static class LeafMixIn
{
}
/*
/**********************************************************
/* Unit tests
/**********************************************************
*/
public void testAsInt() throws Exception
{
assertEquals(9, IntNode.valueOf(9).asInt());
assertEquals(7, LongNode.valueOf(7L).asInt());
assertEquals(13, new TextNode("13").asInt());
assertEquals(0, new TextNode("foobar").asInt());
assertEquals(27, new TextNode("foobar").asInt(27));
assertEquals(1, BooleanNode.TRUE.asInt());
}
public void testAsBoolean() throws Exception
{
assertEquals(false, BooleanNode.FALSE.asBoolean());
assertEquals(true, BooleanNode.TRUE.asBoolean());
assertEquals(false, IntNode.valueOf(0).asBoolean());
assertEquals(true, IntNode.valueOf(1).asBoolean());
assertEquals(false, LongNode.valueOf(0).asBoolean());
assertEquals(true, LongNode.valueOf(-34L).asBoolean());
assertEquals(true, new TextNode("true").asBoolean());
assertEquals(false, new TextNode("false").asBoolean());
assertEquals(false, new TextNode("barf").asBoolean());
assertEquals(true, new TextNode("barf").asBoolean(true));
assertEquals(true, new POJONode(Boolean.TRUE).asBoolean());
}
// Deserializer to trigger the problem described in [JACKSON-554]
public static class LeafDeserializer extends JsonDeserializer<Leaf>
{
@Override
public Leaf deserialize(JsonParser jp, DeserializationContext ctxt)
throws IOException, JsonProcessingException
{
JsonNode tree = jp.readValueAsTree();
Leaf leaf = new Leaf();
leaf.value = tree.get("value").getIntValue();
return leaf;
}
}
// Test for [JACKSON-554]
public void testTreeToValue() throws Exception
{
String JSON = "{\"leaf\":{\"value\":13}}";
ObjectMapper mapper = new ObjectMapper();
mapper.getDeserializationConfig().addMixInAnnotations(Leaf.class, LeafMixIn.class);
JsonNode root = mapper.readTree(JSON);
// Ok, try converting to bean using two mechanisms
Root r1 = mapper.treeToValue(root, Root.class);
assertNotNull(r1);
assertEquals(13, r1.leaf.value);
Root r2 = mapper.readValue(root, Root.class);
assertEquals(13, r2.leaf.value);
}
// Test for [JACKSON-631]
public void testBase64Text() throws Exception
{
// let's actually iterate over sets of encoding modes, lengths
final int[] LENS = { 1, 2, 3, 4, 7, 9, 32, 33, 34, 35 };
final Base64Variant[] VARIANTS = {
Base64Variants.MIME,
Base64Variants.MIME_NO_LINEFEEDS,
Base64Variants.MODIFIED_FOR_URL,
Base64Variants.PEM
};
for (int len : LENS) {
byte[] input = new byte[len];
for (int i = 0; i < input.length; ++i) {
input[i] = (byte) i;
}
for (Base64Variant variant : VARIANTS) {
TextNode n = new TextNode(variant.encode(input));
byte[] data = null;
try {
data = n.getBinaryValue(variant);
} catch (Exception e) {
throw new IOException("Failed (variant "+variant+", data length "+len+"): "+e.getMessage(), e);
}
assertNotNull(data);
assertArrayEquals(data, input);
}
}
}
static class Issue709Bean {
public byte[] data;
}
/**
* Simple test to verify that byte[] values can be handled properly when
* converting, as long as there is metadata (from POJO definitions).
*/
public void testIssue709() throws Exception
{
ObjectMapper mapper = new ObjectMapper();
byte[] inputData = new byte[] { 1, 2, 3 };
ObjectNode node = mapper.createObjectNode();
node.put("data", inputData);
Issue709Bean result = mapper.readValue(node, Issue709Bean.class);
String json = mapper.writeValueAsString(node);
Issue709Bean resultFromString = mapper.readValue(json, Issue709Bean.class);
Issue709Bean resultFromConvert = mapper.convertValue(node, Issue709Bean.class);
// all methods should work equally well:
Assert.assertArrayEquals(inputData, resultFromString.data);
Assert.assertArrayEquals(inputData, resultFromConvert.data);
Assert.assertArrayEquals(inputData, result.data);
}
public void testBinaryData() throws Exception
{
ObjectMapper mapper = new ObjectMapper();
TokenBuffer buf = new TokenBuffer(mapper);
buf.writeObject(new byte[3]);
JsonNode node = mapper.readTree(buf.asParser());
// assertTrue(node.isBinary());
byte[] data = node.getBinaryValue();
assertNotNull(data);
assertEquals(3, data.length);
}
private final Object MARKER = new Object();
public void testEmbeddedObjectInArray() throws Exception
{
ObjectMapper mapper = new ObjectMapper();
TokenBuffer buf = new TokenBuffer(mapper);
buf.writeStartArray();
buf.writeObject(MARKER);
buf.writeEndArray();
JsonNode node = mapper.readTree(buf.asParser());
assertTrue(node.isArray());
assertEquals(1, node.size());
JsonNode n = node.get(0);
assertTrue(n.isPojo());
assertSame(MARKER, ((POJONode) n).getPojo());
}
public void testEmbeddedObjectInObject() throws Exception
{
ObjectMapper mapper = new ObjectMapper();
TokenBuffer buf = new TokenBuffer(mapper);
buf.writeStartObject();
buf.writeFieldName("pojo");
buf.writeObject(MARKER);
buf.writeEndObject();
JsonNode node = mapper.readTree(buf.asParser());
assertTrue(node.isObject());
assertEquals(1, node.size());
JsonNode n = node.get("pojo");
assertTrue(n.isPojo());
assertSame(MARKER, ((POJONode) n).getPojo());
}
}