DBCollectionSpecification.groovy

class DBCollectionSpecification extends Specification {
    private final Mongo mongo = Mock()
    private final ServerSelectingSession session = Mock()

    private final DB database = new DB(mongo, 'myDatabase', new DocumentCodec())
    
    @Subject
    private final DBCollection collection = new DBCollection('collectionName', database, new DocumentCodec())

    def setup() {
        mongo.getSession() >> { session }
    }

    def 'should throw com.mongodb.MongoException if rename fails'() {
        setup:
        session.execute(_) >> { throw new org.mongodb.MongoException('The error from the new Java layer') }

        when:
        collection.rename('newCollectionName');

        then:
        thrown(com.mongodb.MongoException)
    }
}