/*
    * 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.lookup;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.mockito.Mockito.spy;
  import static org.mockito.Mockito.when;
  
  import java.io.UnsupportedEncodingException;
  import java.nio.charset.StandardCharsets;
  
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link UrlDecoderStringLookup}.
   */
  class UrlDecoderStringLookupTest {
  
      private static final String DATA = "Hello World!";
  
      @Test
      void testAllPercent() {
          assertEquals(DATA, UrlDecoderStringLookup.INSTANCE.apply("Hello%20World%21"));
      }
  
      @Test
      void testExceptionGettingString() throws UnsupportedEncodingException {
          final UrlDecoderStringLookup mockLookup = spy(UrlDecoderStringLookup.class);
          when(mockLookup.decode(DATA, StandardCharsets.UTF_8.displayName()))
              .thenThrow(UnsupportedEncodingException.class);
          assertThrows(IllegalArgumentException.class, () -> mockLookup.apply(DATA));
      }
  
      @Test
      void testExclamation() {
          assertEquals(DATA, UrlDecoderStringLookup.INSTANCE.apply("Hello%20World!"));
      }
  
      @Test
      void testMalformedEscapeReturnsNull() {
          assertNull(UrlDecoderStringLookup.INSTANCE.apply("%"));
          assertNull(UrlDecoderStringLookup.INSTANCE.apply("%E0%"));
      }
  
      @Test
      void testNull() {
          assertNull(UrlDecoderStringLookup.INSTANCE.apply(null));
      }
  
      @Test
      void testPlus() {
          assertEquals(DATA, UrlDecoderStringLookup.INSTANCE.apply("Hello+World!"));
      }
  
      @Test
      void testToString() {
          // does not blow up and gives some kind of string.
          assertFalse(UrlDecoderStringLookup.INSTANCE.toString().isEmpty());
      }
  
  }