/*
    * 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;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import java.text.FieldPosition;
  import java.text.Format;
  import java.text.ParsePosition;
  import java.text.SimpleDateFormat;
  import java.util.Locale;
  
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link CompositeFormat}.
   */
  class CompositeFormatTest {
  
      /**
       * Ensures that the parse/format separation is correctly maintained.
       */
      @Test
      void testCompositeFormat() {
  
          final Format parser = new Format() {
              private static final long serialVersionUID = 1L;
  
              @Override
              public StringBuffer format(final Object obj, final StringBuffer toAppendTo, final FieldPosition pos) {
                  throw new UnsupportedOperationException("Not implemented");
              }
  
              @Override
              public Object parseObject(final String source, final ParsePosition pos) {
                  return null;    // do nothing
              }
          };
  
          final Format formatter = new Format() {
              private static final long serialVersionUID = 1L;
  
              @Override
              public StringBuffer format(final Object obj, final StringBuffer toAppendTo, final FieldPosition pos) {
                  return null;    // do nothing
              }
  
              @Override
              public Object parseObject(final String source, final ParsePosition pos) {
                  throw new UnsupportedOperationException("Not implemented");
              }
          };
  
          final CompositeFormat composite = new CompositeFormat(parser, formatter);
  
          composite.parseObject("", null);
          composite.format(new Object(), new StringBuffer(), null);
          assertEquals(parser, composite.getParser(), "Parser get method incorrectly implemented");
          assertEquals(formatter, composite.getFormatter(), "Formatter get method incorrectly implemented");
      }
  
      @Test
      void testUsage() throws Exception {
          final Format f1 = new SimpleDateFormat("MMddyyyy", Locale.ENGLISH);
          final Format f2 = new SimpleDateFormat("MMMM d, yyyy", Locale.ENGLISH);
          final CompositeFormat c = new CompositeFormat(f1, f2);
          final String testString = "January 3, 2005";
          assertEquals(testString, c.format(c.parseObject("01032005")));
          assertEquals(testString, c.reformat("01032005"));
      }
  
  }