/*
    * 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.io.build;
  
  import static org.junit.jupiter.api.Assertions.assertArrayEquals;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.io.Reader;
  import java.io.Writer;
  import java.nio.charset.Charset;
  import java.nio.file.Files;
  import java.nio.file.Paths;
  import java.util.Objects;
  
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link AbstractOrigin} and subclasses.
   *
   * @param <T> the type of instances to build.
   * @param <B> the type of builder subclass.
   */
  public abstract class AbstractOriginTest<T, B extends AbstractOrigin<T, B>> {
  
      protected static final String FILE_RES_RO = "/org/apache/commons/io/test-file-20byteslength.bin";
      protected static final String FILE_NAME_RO = "src/test/resources" + FILE_RES_RO;
      protected static final String FILE_NAME_RW = "target/" + AbstractOriginTest.class.getSimpleName() + ".txt";
  
      protected AbstractOrigin<T, B> originRo;
      protected AbstractOrigin<T, B> originRw;
  
      protected AbstractOrigin<T, B> getOriginRo() {
          return Objects.requireNonNull(originRo, "originRo");
      }
  
      protected AbstractOrigin<T, B> getOriginRw() {
          return Objects.requireNonNull(originRw, "originRw");
      }
  
      protected void setOriginRo(final AbstractOrigin<T, B> origin) {
          this.originRo = origin;
      }
  
      protected void setOriginRw(final AbstractOrigin<T, B> origin) {
          this.originRw = origin;
      }
  
      @Test
      public void testGetByteArray() throws IOException {
          assertArrayEquals(Files.readAllBytes(Paths.get(FILE_NAME_RO)), getOriginRo().getByteArray());
      }
  
      @Test
      public void testGetByteArrayAt_0_0() throws IOException {
          assertArrayEquals(new byte[] {}, getOriginRo().getByteArray(0, 0));
      }
  
      @Test
      public void testGetByteArrayAt_0_1() throws IOException {
          assertArrayEquals(new byte[] { '1' }, getOriginRo().getByteArray(0, 1));
      }
  
      @Test
      public void testGetByteArrayAt_1_1() throws IOException {
          assertArrayEquals(new byte[] { '2' }, getOriginRo().getByteArray(1, 1));
      }
  
      @Test
      public void testGetCharSequence() throws IOException {
          assertNotNull(getOriginRo().getCharSequence(Charset.defaultCharset()));
      }
  
      @Test
      public void testGetFile() {
          assertNotNull(getOriginRo().getFile());
      }
  
      @Test
      public void testGetInputStream() throws IOException {
          try (final InputStream inputStream = getOriginRo().getInputStream()) {
              assertNotNull(inputStream);
         }
     }
 
     @Test
     public void testGetOutputStream() throws IOException {
         try (final OutputStream output = getOriginRw().getOutputStream()) {
             assertNotNull(output);
         }
     }
 
     @Test
     public void testGetPath() {
         assertNotNull(getOriginRo().getPath());
     }
 
     @Test
     public void testGetReader() throws IOException {
         try (final Reader reader = getOriginRo().getReader(Charset.defaultCharset())) {
             assertNotNull(reader);
         }
     }
 
     @Test
     public void testGetWriter() throws IOException {
         try (final Writer writer = getOriginRw().getWriter(Charset.defaultCharset())) {
             assertNotNull(writer);
         }
     }
 
     @Test
     public void testSize() throws IOException {
         assertEquals(Files.size(Paths.get(FILE_NAME_RO)), getOriginRo().getByteArray().length);
     }
 }