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 static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  /**
   * Test ArrayUtils.
   *
   * @author zzq
   */
  class ArrayUtilsTest {
      
      Integer[] nullArr = null;
      
      Integer[] nothingArr = new Integer[] {};
      
      @Test
      void testisEmpty() {
          Integer[] arr = new Integer[] {1, 2};
          assertTrue(ArrayUtils.isEmpty(nullArr));
          assertTrue(ArrayUtils.isEmpty(nothingArr));
          assertFalse(ArrayUtils.isEmpty(arr));
      }
      
      @Test
      void contains() {
          assertFalse(ArrayUtils.contains(nullArr, "a"));
          assertFalse(ArrayUtils.contains(nullArr, null));
          assertFalse(ArrayUtils.contains(nothingArr, "b"));
          Integer[] arr = new Integer[] {1, 2, 3};
          assertFalse(ArrayUtils.contains(arr, null));
          Integer[] arr1 = new Integer[] {1, 2, 3, null};
          assertTrue(ArrayUtils.contains(arr1, null));
          assertTrue(ArrayUtils.contains(arr, 1));
          assertFalse(ArrayUtils.contains(arr, "1"));
      }
  }
  