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package com.fasterxml.jackson.databind;
import java.io.*;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.*;
import com.fasterxml.jackson.databind.type.TypeFactory;
public class TestObjectMapper extends BaseMapTest
{
static class Bean {
int value = 3;
public void setX(int v) { value = v; }
}
public void testProps()
{
ObjectMapper m = new ObjectMapper();
// should have default factory
assertNotNull(m.getNodeFactory());
JsonNodeFactory nf = JsonNodeFactory.instance;
m.setNodeFactory(nf);
assertSame(nf, m.getNodeFactory());
}
public void testSupport()
{
ObjectMapper m = new ObjectMapper();
assertTrue(m.canSerialize(String.class));
assertTrue(m.canDeserialize(TypeFactory.defaultInstance().constructType(String.class)));
}
public void testTreeRead() throws Exception
{
ObjectMapper m = new ObjectMapper();
String JSON = "{ }";
JsonNode n = m.readTree(JSON);
assertTrue(n instanceof ObjectNode);
n = m.readTree(new StringReader(JSON));
assertTrue(n instanceof ObjectNode);
n = m.readTree(new ByteArrayInputStream(JSON.getBytes("UTF-8")));
assertTrue(n instanceof ObjectNode);
}
// Test to ensure that we can check property ordering defaults...
public void testConfigForPropertySorting() throws Exception
{
ObjectMapper m = new ObjectMapper();
// sort-alphabetically is disabled by default:
assertFalse(m.isEnabled(MapperFeature.SORT_PROPERTIES_ALPHABETICALLY));
SerializationConfig sc = m.getSerializationConfig();
assertFalse(sc.isEnabled(MapperFeature.SORT_PROPERTIES_ALPHABETICALLY));
assertFalse(sc.shouldSortPropertiesAlphabetically());
DeserializationConfig dc = m.getDeserializationConfig();
assertFalse(dc.shouldSortPropertiesAlphabetically());
// but when enabled, should be visible:
m.enable(MapperFeature.SORT_PROPERTIES_ALPHABETICALLY);
sc = m.getSerializationConfig();
assertTrue(sc.isEnabled(MapperFeature.SORT_PROPERTIES_ALPHABETICALLY));
assertTrue(sc.shouldSortPropertiesAlphabetically());
dc = m.getDeserializationConfig();
// and not just via SerializationConfig, but also via DeserializationConfig
assertTrue(dc.isEnabled(MapperFeature.SORT_PROPERTIES_ALPHABETICALLY));
assertTrue(dc.shouldSortPropertiesAlphabetically());
}
public void testJsonFactoryLinkage()
{
// first, implicit factory, giving implicit linkage
ObjectMapper m = new ObjectMapper();
assertSame(m, m.getJsonFactory().getCodec());
// and then explicit factory, which should also be implicitly linked
JsonFactory f = new JsonFactory();
m = new ObjectMapper(f);
assertSame(f, m.getJsonFactory());
assertSame(m, f.getCodec());
}
/**
* Test for verifying working of [JACKSON-191]
*/
public void testProviderConfig() throws Exception
{
ObjectMapper mapper = new ObjectMapper();
assertEquals(0, mapper._deserializationContext._cache.cachedDeserializersCount());
// and then should get one constructed for:
Bean bean = mapper.readValue("{ \"x\" : 3 }", Bean.class);
assertNotNull(bean);
assertEquals(1, mapper._deserializationContext._cache.cachedDeserializersCount());
mapper._deserializationContext._cache.flushCachedDeserializers();
assertEquals(0, mapper._deserializationContext._cache.cachedDeserializersCount());
}
}
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