/*
    * ====================================================================
    * 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.hc.core5.http.impl.nio;
  
  import org.hamcrest.CoreMatchers;
  import org.hamcrest.MatcherAssert;
  import org.junit.Test;
  
  public class TestExpandableBuffer {
  
      @Test
      public void testBasics() throws Exception {
          final ExpandableBuffer buffer = new ExpandableBuffer(16);
          MatcherAssert.assertThat(buffer.mode(), CoreMatchers.equalTo(ExpandableBuffer.Mode.INPUT));
          MatcherAssert.assertThat(buffer.hasData(), CoreMatchers.equalTo(false));
  
          buffer.setInputMode();
          buffer.buffer().put(new byte[] { 0, 1, 2, 3, 4, 5});
          MatcherAssert.assertThat(buffer.hasData(), CoreMatchers.equalTo(true));
          MatcherAssert.assertThat(buffer.length(), CoreMatchers.equalTo(6));
          MatcherAssert.assertThat(buffer.buffer().capacity(), CoreMatchers.equalTo(16));
          MatcherAssert.assertThat(buffer.mode(), CoreMatchers.equalTo(ExpandableBuffer.Mode.OUTPUT));
  
          buffer.setInputMode();
          buffer.buffer().put(new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 });
          MatcherAssert.assertThat(buffer.length(), CoreMatchers.equalTo(16));
          MatcherAssert.assertThat(buffer.buffer().capacity(), CoreMatchers.equalTo(16));
          MatcherAssert.assertThat(buffer.mode(), CoreMatchers.equalTo(ExpandableBuffer.Mode.OUTPUT));
  
          buffer.setInputMode();
          buffer.ensureCapacity(22);
          buffer.buffer().put(new byte[] { 0, 1, 2, 3, 4, 5});
          MatcherAssert.assertThat(buffer.length(), CoreMatchers.equalTo(22));
          MatcherAssert.assertThat(buffer.buffer().capacity(), CoreMatchers.equalTo(22));
          MatcherAssert.assertThat(buffer.mode(), CoreMatchers.equalTo(ExpandableBuffer.Mode.OUTPUT));
  
          buffer.clear();
          MatcherAssert.assertThat(buffer.mode(), CoreMatchers.equalTo(ExpandableBuffer.Mode.INPUT));
          MatcherAssert.assertThat(buffer.hasData(), CoreMatchers.equalTo(false));
          MatcherAssert.assertThat(buffer.capacity(), CoreMatchers.equalTo(22));
      }
  
      @Test
      public void testAdjustCapacity() throws Exception {
          final ExpandableBuffer buffer = new ExpandableBuffer(16);
          MatcherAssert.assertThat(buffer.capacity(), CoreMatchers.equalTo(16));
  
          buffer.ensureCapacity(21);
          MatcherAssert.assertThat(buffer.capacity(), CoreMatchers.equalTo(21));
          buffer.ensureAdjustedCapacity(22);
          MatcherAssert.assertThat(buffer.capacity(), CoreMatchers.equalTo(1024));
          buffer.ensureAdjustedCapacity(1024);
          MatcherAssert.assertThat(buffer.capacity(), CoreMatchers.equalTo(1024));
          buffer.ensureAdjustedCapacity(1025);
          MatcherAssert.assertThat(buffer.capacity(), CoreMatchers.equalTo(2048));
      }
  }