/*
    * 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
    *
    *      https://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.text.translate;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertInstanceOf;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  import java.io.IOException;
  import java.io.UncheckedIOException;
  import java.io.Writer;
  
  import org.junit.jupiter.api.Test;
  
  
  class CharSequenceTranslatorTest {
  
      private final class TestCharSequenceTranslator extends CharSequenceTranslator {
          @Override
          public int translate(final CharSequence input, final int index, final Writer writer) {
              translateInvocationCounter++;
              return 0;
          }
  
      }
  
      //Used to count translate invocations
      private int translateInvocationCounter;
  
      @Test
      void testIOException() {
          final CharSequenceTranslator translator = new CharSequenceTranslator() {
              @Override
              public int translate(final CharSequence input, final int index, final Writer writer) throws IOException {
                  throw new IOException("Test exception");
              }
          };
  
          assertThrows(UncheckedIOException.class,
                  () -> translator.translate("."));
      }
  
      @Test
      void testWith() throws IOException {
          final CharSequenceTranslator charSequenceTranslatorOne = new TestCharSequenceTranslator();
          final CharSequenceTranslator charSequenceTranslatorTwo = new TestCharSequenceTranslator();
          final CharSequenceTranslator charSequenceTranslatorThree = new TestCharSequenceTranslator();
          final CharSequenceTranslator aggregatedTranslator = charSequenceTranslatorOne.with(charSequenceTranslatorTwo, charSequenceTranslatorThree);
          aggregatedTranslator.translate("", 0, null);
          assertInstanceOf(AggregateTranslator.class, aggregatedTranslator);
          assertEquals(3, translateInvocationCounter);
      }
  }