/*
    * 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.commons.compress.archivers.zip;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import org.junit.jupiter.api.Test;
  
  public class CircularBufferTest {
  
      @Test
      public void testCopy() {
          final CircularBuffer buffer = new CircularBuffer(16);
  
          buffer.put(1);
          buffer.put(2);
          buffer.get();
          buffer.get();
  
          // copy uninitialized data
          buffer.copy(6, 8);
  
          for (int i = 2; i < 6; i++) {
              assertEquals(0, buffer.get(), "buffer[" + i + "]");
          }
          assertEquals(1, buffer.get(), "buffer[" + 6 + "]");
          assertEquals(2, buffer.get(), "buffer[" + 7 + "]");
          assertEquals(0, buffer.get(), "buffer[" + 8 + "]");
          assertEquals(0, buffer.get(), "buffer[" + 9 + "]");
  
          for (int i = 10; i < 14; i++) {
              buffer.put(i);
              buffer.get();
          }
  
          assertFalse(buffer.available(), "available");
  
          // copy data and wrap
          buffer.copy(2, 8);
  
          for (int i = 14; i < 18; i++) {
              assertEquals(i % 2 == 0 ? 12 : 13, buffer.get(), "buffer[" + i + "]");
          }
      }
  
      @Test
      public void testPutAndGet() {
          final int size = 16;
          final CircularBuffer buffer = new CircularBuffer(size);
          for (int i = 0; i < size / 2; i++) {
              buffer.put(i);
          }
  
          assertTrue(buffer.available(), "available");
  
          for (int i = 0; i < size / 2; i++) {
              assertEquals(i, buffer.get(), "buffer[" + i + "]");
          }
  
          assertEquals(-1, buffer.get());
          assertFalse(buffer.available(), "available");
      }
  }