content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * Licensed 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
   *
   *      http://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 com.alibaba.nacos.common.utils;
  
  import org.junit.jupiter.api.Test;
  
  import java.lang.reflect.ParameterizedType;
  import java.lang.reflect.Type;
  import java.util.List;
  import java.util.Map;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  /**
   * type utils test.
   *
   * @author zzq
   */
  class TypeUtilsTest {
      
      @Test
      void parameterize() {
          ParameterizedType stringComparableType = TypeUtils.parameterize(List.class, String.class);
          assertEquals("java.util.List<java.lang.String>", stringComparableType.toString());
          assertEquals(List.class, stringComparableType.getRawType());
          assertNull(stringComparableType.getOwnerType());
          assertEquals(1, stringComparableType.getActualTypeArguments().length);
          assertEquals(String.class, stringComparableType.getActualTypeArguments()[0]);
          
          ParameterizedType stringIntegerComparableType = TypeUtils.parameterize(Map.class, String.class, Integer.class);
          assertEquals("java.util.Map<java.lang.String, java.lang.Integer>", stringIntegerComparableType.toString());
          assertEquals(Map.class, stringIntegerComparableType.getRawType());
          assertNull(stringComparableType.getOwnerType());
          assertEquals(2, stringIntegerComparableType.getActualTypeArguments().length);
          assertEquals(String.class, stringIntegerComparableType.getActualTypeArguments()[0]);
          assertEquals(Integer.class, stringIntegerComparableType.getActualTypeArguments()[1]);
      }
      
      @Test
      void testParameterizeForNull() {
          assertThrows(NullPointerException.class, () -> {
              TypeUtils.parameterize(null, String.class);
          });
      }
      
      @Test
      void testParameterizeForNullType() {
          assertThrows(NullPointerException.class, () -> {
              TypeUtils.parameterize(List.class, (Type[]) null);
          });
      }
      
      @Test
      void testParameterizeForNullTypeArray() {
          assertThrows(IllegalArgumentException.class, () -> {
              TypeUtils.parameterize(List.class, (Type) null);
          });
      }
      
      @Test
      void testParameterizeForDiffLength() {
          assertThrows(IllegalArgumentException.class, () -> {
              TypeUtils.parameterize(List.class, String.class, Integer.class);
          });
      }
  }
  