/*
    * 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.assertThrowsExactly;
  
  import java.io.IOException;
  import java.io.StringWriter;
  import java.util.HashMap;
  import java.util.Map;
  
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link LookupTranslator}.
   */
  class LookupTranslatorTest  {
  
      @Test
      void testBasicLookup() throws IOException {
          final Map<CharSequence, CharSequence> translatorMap = new HashMap<>();
          translatorMap.put("one", "two");
          final LookupTranslator lt = new LookupTranslator(translatorMap);
          final StringWriter out = new StringWriter();
          final int result = lt.translate("one", 0, out);
          assertEquals(3, result, "Incorrect code point consumption");
          assertEquals("two", out.toString(), "Incorrect value");
      }
  
      @Test
      void testFailsToCreateLookupTranslatorThrowsInvalidParameterException() {
          assertThrowsExactly(NullPointerException.class, () -> new LookupTranslator(null));
      }
  
      // Tests: https://issues.apache.org/jira/browse/LANG-882
      @Test
      void testLang882() throws IOException {
          final Map<CharSequence, CharSequence> translatorMap = new HashMap<>();
          translatorMap.put(new StringBuffer("one"), new StringBuffer("two"));
          final LookupTranslator lt = new LookupTranslator(translatorMap);
          final StringWriter out = new StringWriter();
          final int result = lt.translate(new StringBuffer("one"), 0, out);
          assertEquals(3, result, "Incorrect code point consumption");
          assertEquals("two", out.toString(), "Incorrect value");
      }
  
      @Test
      void testTranslateSupplementaryCharacter() {
          /* Key: string with Mathematical double-struck capital A (U+1D538) */
          final String symbol = new StringBuilder().appendCodePoint(0x1D538).toString();
          /* Map U+1D538 to "A" */
          final Map<CharSequence, CharSequence> map = new HashMap<>();
          map.put(symbol, "A");
          final LookupTranslator translator = new LookupTranslator(map);
          final String translated = translator.translate(symbol + "=A");
          /* we should get "A=A". */
          assertEquals("A=A", translated, "Incorrect value");
      }
  
  }