### Question:
MongoStore extends StoreBase { @Override public int getSize() throws IOException { Long count = this.collection.count(new BasicDBObject(appContextProperty, this.getName())); return count.intValue(); }  @Override int getSize(); @Override String[] keys(); @Override Session load(String id); @Override void remove(String id); @Override void clear(); @Override void save(Session session); @Override String getStoreName(); String getConnectionUri(); void setConnectionUri(String connectionUri); String getHosts(); void setHosts(String hosts); String getDbName(); void setDbName(String dbName); String getCollectionName(); void setCollectionName(String collectionName); String getUsername(); void setUsername(String username); String getPassword(); void setPassword(String password); int getConnectionTimeoutMs(); void setConnectionTimeoutMs(int connectionTimeoutMs); int getConnectionWaitTimeoutMs(); void setConnectionWaitTimeoutMs(int connectionWaitTimeoutMs); int getMinPoolSize(); void setMinPoolSize(int minPoolSize); int getMaxPoolSize(); void setMaxPoolSize(int maxPoolSize); String getReplicaSet(); void setReplicaSet(String replicaSet); boolean isUseSecureConnection(); void setUseSecureConnection(boolean useSecureConnection); boolean isUseSlaves(); void setUseSlaves(boolean useSlaves); WriteConcern getWriteConcern(); void setWriteConcern(WriteConcern writeConcern); int getTimeToLive(); void setTimeToLive(int timeToLive);  }### Answer:
@Test public void testGetSize() throws Exception { this.mongoStore.getSize(); }