1  'use strict'
 2  /* eslint-env mocha */
 3  /* eslint no-proto: 0 */
 4  var assert = require('assert')
 5  var setPrototypeOf = require('..')
 6  
 7  describe('setProtoOf(obj, proto)', function () {
 8    it('should merge objects', function () {
 9      var obj = { a: 1, b: 2 }
10      var proto = { b: 3, c: 4 }
11      var mergeObj = setPrototypeOf(obj, proto)
12  
13      if (Object.getPrototypeOf) {
14        assert.strictEqual(Object.getPrototypeOf(obj), proto)
15      } else if ({ __proto__: [] } instanceof Array) {
16        assert.strictEqual(obj.__proto__, proto)
17      } else {
18        assert.strictEqual(obj.a, 1)
19        assert.strictEqual(obj.b, 2)
20        assert.strictEqual(obj.c, 4)
21      }
22      assert.strictEqual(mergeObj, obj)
23    })
24  })