/*
    * 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.assertThrows;
  
  import java.io.IOException;
  import java.io.StringWriter;
  import java.io.Writer;
  
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  /**
   * Unit test for {@link SinglePassTranslator}.
   */
  class SinglePassTranslatorTest {
  
      private final SinglePassTranslator dummyTranslator = new SinglePassTranslator() {
  
          @Override
          void translateWhole(final CharSequence input, final Writer writer) throws IOException {
              // noop
          }
      };
  
      private StringWriter out;
  
      @BeforeEach
      public void before() {
           out = new StringWriter();
      }
  
      @Test
      void testCodePointsAreReturned() throws Exception {
          assertEquals(0, dummyTranslator.translate("", 0, out));
          assertEquals(3, dummyTranslator.translate("abc", 0, out));
          assertEquals(7, dummyTranslator.translate("abcdefg", 0, out));
      }
  
      @Test
      void testIndexIsValidated() {
          assertThrows(IllegalArgumentException.class, () -> dummyTranslator.translate("abc", 1, out));
      }
  
      @Test
      void testTranslateThrowsIllegalArgumentException() {
          assertThrows(IllegalArgumentException.class, () -> dummyTranslator.translate("(,Fk", 647, null));
      }
  
  }