content: /*
   * Copyright 1999-2019 Alibaba Group Holding Ltd.
   *
   * 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 com.alibaba.csp.sentinel.cluster.server.codec.data;
  
  import io.netty.buffer.ByteBuf;
  import io.netty.buffer.Unpooled;
  import org.junit.Test;
  
  import static org.assertj.core.api.Assertions.assertThat;
  
  /**
   * Test cases for {@link PingResponseDataWriter}.
   *
   * @author Eric Zhao
   */
  public class PingResponseDataWriterTest {
  
      @Test
      public void testWritePingResponseAndParse() {
          ByteBuf buf = Unpooled.buffer();
          PingResponseDataWriter writer = new PingResponseDataWriter();
  
          int small = 120;
          writer.writeTo(small, buf);
          assertThat(buf.readableBytes()).isGreaterThanOrEqualTo(4);
          assertThat(buf.readInt()).isEqualTo(small);
  
          int big = Integer.MAX_VALUE;
          writer.writeTo(big, buf);
          assertThat(buf.readableBytes()).isGreaterThanOrEqualTo(4);
          assertThat(buf.readInt()).isEqualTo(big);
  
          buf.release();
      }
  }
  