/*
    * 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 org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link JavaUnicodeEscaper}.
   */
  class JavaUnicodeEscaperTest {
  
      @Test
      void testAbove() {
          final JavaUnicodeEscaper jue = JavaUnicodeEscaper.above('F');
          final String input = "ADFGZ";
          final String result = jue.translate(input);
          assertEquals("ADF\\u0047\\u005A", result, "Failed to escape Unicode characters via the above method");
      }
  
      @Test
      void testBelow() {
          final JavaUnicodeEscaper jue = JavaUnicodeEscaper.below('F');
          final String input = "ADFGZ";
          final String result = jue.translate(input);
          assertEquals("\\u0041\\u0044FGZ", result, "Failed to escape Unicode characters via the below method");
      }
  
      @Test
      void testBetween() {
          final JavaUnicodeEscaper jue = JavaUnicodeEscaper.between('F', 'L');
          final String input = "ADFGZ";
          final String result = jue.translate(input);
          assertEquals("AD\\u0046\\u0047Z", result, "Failed to escape Unicode characters via the between method");
      }
  
      @Test
      void testToUtf16Escape() {
          final JavaUnicodeEscaper jue = JavaUnicodeEscaper.below('F');
          // According to https://en.wikipedia.org/wiki/UTF-16#Code_points_U.2B10000..U.2B10FFFF,
          // Character ?, U+24B62, Binary Code Point 0010 0100 1011 0110 0010,
          // Binary UTF-167 1101 1000 0101 0010 1101 1111 0110 0010, UTF-16 Hex Code Units D852 DF62
          final String encoding = jue.toUtf16Escape(Integer.parseInt("024B62", 16));
          assertEquals("\\uD852\\uDF62", encoding);
      }
  }