/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.metron.writer;

import org.apache.metron.common.configuration.writer.WriterConfiguration;
import org.apache.metron.common.writer.BulkMessage;
import org.json.simple.JSONObject;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

import java.util.ArrayList;
import java.util.List;

import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

public class BatchSizePolicyTest {

  private String sensorType = "sensorType";
  private WriterConfiguration configurations = mock(WriterConfiguration.class);
  private List<BulkMessage<JSONObject>> messages = new ArrayList<>();

  @BeforeEach
  public void setup() {
    when(configurations.getBatchSize(sensorType)).thenReturn(2);
  }

  @Test
  public void shouldFlushWhenBatchSizeReached() {
    BatchSizePolicy<JSONObject> batchSizePolicy = new BatchSizePolicy<>();

    messages.add(new BulkMessage<>("message1", new JSONObject()));
    messages.add(new BulkMessage<>("message2", new JSONObject()));
    assertTrue(batchSizePolicy.shouldFlush(sensorType, configurations, messages));
  }

  @Test
  public void shouldNotFlushWhenBatchSizeNotReached() {
    BatchSizePolicy<JSONObject> batchSizePolicy = new BatchSizePolicy<>();

    messages.add(new BulkMessage<>("message1", new JSONObject()));
    assertFalse(batchSizePolicy.shouldFlush(sensorType, configurations, messages));
  }

  @Test
  public void shouldFlushWhenBatchSizeExceeded() {
    BatchSizePolicy<JSONObject> batchSizePolicy = new BatchSizePolicy<>();

    messages.add(new BulkMessage<>("message1", new JSONObject()));
    messages.add(new BulkMessage<>("message2", new JSONObject()));
    messages.add(new BulkMessage<>("message3", new JSONObject()));
    assertTrue(batchSizePolicy.shouldFlush(sensorType, configurations, messages));
  }
}
