/*
    * 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.output;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  import java.io.IOException;
  import java.io.StringWriter;
  import java.io.UncheckedIOException;
  
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link UncheckedAppendable}.
   */
  public class UncheckedAppendableTest {
  
      private IOException exception;
  
      private UncheckedAppendable appendableBroken;
      private UncheckedAppendable appendableString;
  
      @SuppressWarnings("resource")
      @BeforeEach
      public void setUp() {
          exception = new IOException("test exception");
          appendableBroken = UncheckedAppendable.on(new BrokenWriter(exception));
          appendableString = UncheckedAppendable.on(new StringWriter());
      }
  
      @Test
      public void testAppendChar() {
          appendableString.append('a').append('b');
          assertEquals("ab", appendableString.toString());
      }
  
      @Test
      public void testAppendCharSequence() {
          appendableString.append("a").append("b");
          assertEquals("ab", appendableString.toString());
      }
  
      @Test
      public void testAppendCharSequenceIndexed() {
          appendableString.append("a", 0, 1).append("b", 0, 1);
          assertEquals("ab", appendableString.toString());
      }
  
      @Test
      public void testAppendCharSequenceIndexedThrows() {
          final UncheckedIOException e = assertThrows(UncheckedIOException.class, () -> appendableBroken.append("a", 0, 1));
          assertEquals(exception, e.getCause());
      }
  
      @Test
      public void testAppendCharSequenceThrows() {
          final UncheckedIOException e = assertThrows(UncheckedIOException.class, () -> appendableBroken.append("a"));
          assertEquals(exception, e.getCause());
      }
  
      @Test
      public void testAppendCharThrows() {
          final UncheckedIOException e2 = assertThrows(UncheckedIOException.class, () -> appendableBroken.append('a'));
          assertEquals(exception, e2.getCause());
      }
  
      @Test
      public void testToString() {
          assertEquals("ab", UncheckedAppendable.on(new StringWriter(2).append("ab")).toString());
      }
  
  }