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node_modules/buffer/test/node/test-buffer-iterator.js 925 Bytes
aaac7fed   liuqimichale   add
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  'use strict';
  var Buffer = require('../../').Buffer;
  
  
  var assert = require('assert');
  
  var buffer = Buffer.from([1, 2, 3, 4, 5]);
  var arr;
  var b;
  
  // buffers should be iterable
  
  arr = [];
  
  for (b of buffer)
    arr.push(b);
  
  assert.deepStrictEqual(arr, [1, 2, 3, 4, 5]);
  
  
  // buffer iterators should be iterable
  
  arr = [];
  
  for (b of buffer[Symbol.iterator]())
    arr.push(b);
  
  assert.deepStrictEqual(arr, [1, 2, 3, 4, 5]);
  
  
  // buffer#values() should return iterator for values
  
  arr = [];
  
  for (b of buffer.values())
    arr.push(b);
  
  assert.deepStrictEqual(arr, [1, 2, 3, 4, 5]);
  
  
  // buffer#keys() should return iterator for keys
  
  arr = [];
  
  for (b of buffer.keys())
    arr.push(b);
  
  assert.deepStrictEqual(arr, [0, 1, 2, 3, 4]);
  
  
  // buffer#entries() should return iterator for entries
  
  arr = [];
  
  for (b of buffer.entries())
    arr.push(b);
  
  assert.deepStrictEqual(arr, [
    [0, 1],
    [1, 2],
    [2, 3],
    [3, 4],
    [4, 5]
  ]);