test.js 510 Bytes

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var inherits = require('./inherits.js')
var assert = require('assert')

function test(c) {
  assert(c.constructor === Child)
  assert(c.constructor.super_ === Parent)
  assert(Object.getPrototypeOf(c) === Child.prototype)
  assert(Object.getPrototypeOf(Object.getPrototypeOf(c)) === Parent.prototype)
  assert(c instanceof Child)
  assert(c instanceof Parent)
}

function Child() {
  Parent.call(this)
  test(this)
}

function Parent() {}

inherits(Child, Parent)

var c = new Child
test(c)

console.log('ok')