/*
* Copyright (C) 2011 Benoit GUEROUT <bguerout at gmail dot com> and Yves AMSELLEM <amsellem dot yves at gmail dot com>
*
* 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.jongo;
import com.mongodb.ReadPreference;
import org.bson.types.ObjectId;
import org.jongo.marshall.MarshallingException;
import org.jongo.model.Friend;
import org.jongo.util.ErrorObject;
import org.jongo.util.IdResultHandler;
import org.jongo.util.JongoTestCase;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import static junit.framework.Assert.fail;
import static org.assertj.core.api.Assertions.assertThat;
public class FindOneTest extends JongoTestCase {
private MongoCollection collection;
@Before
public void setUp() throws Exception {
collection = createEmptyCollection("friends");
}
@After
public void tearDown() throws Exception {
dropCollection("friends");
}
@Test
public void canFindOne() throws Exception {
/* given */
collection.save(new Friend("John", "22 Wall Street Avenue"));
/* when */
Friend friend = collection.findOne("{name:'John'}").as(Friend.class);
/* then */
assertThat(friend.getName()).isEqualTo("John");
}
@Test
public void canFindOneWithEmptyQuery() throws Exception {
/* given */
collection.save(new Friend("John", "22 Wall Street Avenue"));
/* when */
Friend friend = collection.findOne().as(Friend.class);
/* then */
assertThat(friend.getName()).isEqualTo("John");
}
@Test
public void canFindOneWithObjectId() throws Exception {
/* given */
Friend john = new Friend(new ObjectId(), "John");
collection.save(john);
Friend foundFriend = collection.findOne(john.getId()).as(Friend.class);
/* then */
assertThat(foundFriend).isNotNull();
assertThat(foundFriend.getId()).isEqualTo(john.getId());
}
@Test
public void canFindOneWithOid() throws Exception {
/* given */
ObjectId id = ObjectId.get();
Friend john = new Friend(id, "John");
collection.save(john);
Friend foundFriend = collection.findOne("{_id:#}", id).as(Friend.class);
/* then */
assertThat(foundFriend).isNotNull();
assertThat(foundFriend.getId()).isEqualTo(id);
}
@Test
public void canFindOneWithOidAsString() throws Exception {
/* given */
ObjectId id = new ObjectId();
Friend john = new Friend(id, "John");
collection.save(john);
Friend foundFriend = collection.findOne("{_id:{$oid:#}}", id.toString()).as(Friend.class);
/* then */
assertThat(foundFriend).isNotNull();
assertThat(foundFriend.getId()).isEqualTo(id);
}
@Test
public void shouldFailWhenUnableToUnmarshallResult() throws Exception {
/* given */
collection.insert("{error: 'NotaDate'}");
/* when */
try {
collection.findOne().as(ErrorObject.class);
fail();
} catch (MarshallingException e) {
assertThat(e.getMessage()).contains(" \"error\" : \"NotaDate\"");
}
}
@Test
public void whenNoResultShouldReturnNull() throws Exception {
assertThat(collection.findOne("{_id:'invalid-id'}").as(Object.class)).isNull();
assertThat(collection.findOne("{_id:'invalid-id'}").map(new IdResultHandler())).isNull();
assertThat(collection.find("{_id:'invalid-id'}").as(Object.class).iterator()).hasSize(0);
}
@Test
public void canFindOneWithReadPreference() throws Exception {
/* given */
collection.save(new Friend("John", "22 Wall Street Avenue"));
/* when */
Friend friend = collection.withReadPreference(ReadPreference.primaryPreferred()).findOne("{name:'John'}").as(Friend.class);
/* then */
assertThat(friend.getName()).isEqualTo("John");
// warning: we cannot check that ReadPreference is really used by driver, this unit test only checks the API
}
@Test
public void canOrderBy() throws Exception {
collection.save(new Friend("John", "23 Wall Street Av."));
collection.save(new Friend("John", "21 Wall Street Av."));
collection.save(new Friend("John", "22 Wall Street Av."));
Friend friend = collection.findOne().orderBy("{address:1}").as(Friend.class);
assertThat(friend.getAddress()).isEqualTo("21 Wall Street Av.");
}
}