/*
* Copyright 2015 MongoDB, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.bson;
import org.bson.codecs.BsonTypeClassMap;
import org.bson.codecs.BsonValueCodecProvider;
import org.bson.codecs.CollectibleCodec;
import org.bson.codecs.DecoderContext;
import org.bson.codecs.DocumentCodec;
import org.bson.codecs.DocumentCodecProvider;
import org.bson.codecs.EncoderContext;
import org.bson.codecs.ValueCodecProvider;
import org.bson.codecs.configuration.CodecConfigurationException;
import org.bson.codecs.configuration.CodecRegistry;
import org.bson.json.JsonReader;
import org.junit.Test;
import static java.util.Arrays.asList;
import static org.bson.codecs.configuration.CodecRegistries.fromCodecs;
import static org.bson.codecs.configuration.CodecRegistries.fromProviders;
import static org.bson.codecs.configuration.CodecRegistries.fromRegistries;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
// Don't convert to Spock, as Groovy intercepts equals/hashCode methods that we are trying to test
public class DocumentTest {
private final Document emptyDocument = new Document();
private final Document document = new Document()
.append("a", 1)
.append("b", 2)
.append("c", new Document("x", true))
.append("d", asList(new Document("y", false), 1));
private final Document customDocument = new Document("database", new Name("MongoDB"));
private final CodecRegistry customRegistry = fromRegistries(fromCodecs(new NameCodec()),
fromProviders(new DocumentCodecProvider(), new ValueCodecProvider(), new BsonValueCodecProvider()));
private final DocumentCodec customDocumentCodec = new DocumentCodec(customRegistry, new BsonTypeClassMap());
@Test
public void shouldBeEqualToItself() {
assertTrue(emptyDocument.equals(emptyDocument));
assertTrue(document.equals(document));
}
@Test
public void shouldNotBeEqualToDifferentBsonDocument() {
// expect
assertFalse(emptyDocument.equals(document));
}
@Test
public void shouldHaveSameHashCodeAsEquivalentBsonDocument() {
assertEquals(emptyDocument.hashCode(), new BsonDocument().hashCode());
}
@Test
public void toJsonShouldReturnEquivalent() {
assertEquals(new DocumentCodec().decode(new JsonReader(document.toJson()), DecoderContext.builder().build()),
document);
}
@Test
public void toJsonShouldTakeACustomDocumentCodec() {
try {
customDocument.toJson();
fail("Should fail due to custom type");
} catch (CodecConfigurationException e) {
// noop
}
assertEquals("{ \"database\" : { \"name\" : \"MongoDB\" } }", customDocument.toJson(customDocumentCodec));
}
public class Name {
private final String name;
public Name(final String name) {
this.name = name;
}
public String getName() {
return name;
}
}
class NameCodec implements CollectibleCodec<Name> {
@Override
public void encode(final BsonWriter writer, final Name n, final EncoderContext encoderContext) {
writer.writeStartDocument();
writer.writeString("name", n.getName());
writer.writeEndDocument();
}
@Override
public Name decode(final BsonReader reader, final DecoderContext decoderContext) {
reader.readStartDocument();
String name = reader.readString("_id");
reader.readEndDocument();
return new Name(name);
}
@Override
public Class<Name> getEncoderClass() {
return Name.class;
}
@Override
public boolean documentHasId(final Name document) {
return false;
}
@Override
public BsonObjectId getDocumentId(final Name document) {
return null;
}
@Override
public Name generateIdIfAbsentFromDocument(final Name document) {
return document;
}
}
}