content: /*
   * 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
   *
   *      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.taobao.arthas.core.testtool;
  
  import org.junit.Assert;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  /**
   * @author earayu
   */
  public class TestUtils {
  
      public static <T> List<T> newArrayList(T ... items){
          List<T> list = new ArrayList<T>();
          if(items!=null) {
              Collections.addAll(list, items);
          }
          return list;
      }
  
      /**
       * copied from https://github.com/apache/commons-io/blob/master/src/test/java/org/apache/commons/io/testtools/TestUtils.java
       * Assert that the content of a file is equal to that in a byte[].
       *
       * @param b0   the expected contents
       * @param file the file to check
       * @throws IOException If an I/O error occurs while reading the file contents
       */
      public static void assertEqualContent(final byte[] b0, final File file) throws IOException {
          int count = 0, numRead = 0;
          final byte[] b1 = new byte[b0.length];
          InputStream is = null;
          try {
              is = new FileInputStream(file);
              while (count < b0.length && numRead >= 0) {
                  numRead = is.read(b1, count, b0.length);
                  count += numRead;
              }
              Assert.assertEquals("Different number of bytes: ", b0.length, count);
              for (int i = 0; i < count; i++) {
                  Assert.assertEquals("byte " + i + " differs", b0[i], b1[i]);
              }
          }finally {
              if(is!=null){
                  is.close();
              }
          }
      }
  
  }
  