text: 'use strict'
  
  /*
   * Create a `multiply` function that takes two number as arguments
   * and returns the result of the multiplication of those two.
   * But you must do this without using the operators * or /
   * and no loops. You need to do it using recursion.
   *
   * @notions Primitive and Operators, Functions, Recursion
   */
  
  // Your code :
  function multiply(num1,num2){
  
      if ( num1 == 0 || num2 == 0){
          return 0
      }
      else if(num2 > 0){
          return num1 + multiply(num1,num2-1)
      }
      return (-multiply(num1,-num2))
  }
  
  //* Begin of tests
  const assert = require('assert')
  
  assert.strictEqual(typeof multiply, 'function')
  assert.strictEqual(multiply.length, 2)
  assert.strictEqual(multiply.toString().includes('Math.imul'), false)
  assert.strictEqual(multiply.toString().includes('while'), false)
  assert.strictEqual(multiply.toString().includes('for'), false)
  assert.strictEqual(multiply.toString().includes('*'), false)
  assert.strictEqual(multiply.toString().includes('/'), false)
  assert.strictEqual(multiply(34, 78), 2652)
  assert.strictEqual(multiply(123, 0), 0)
  assert.strictEqual(multiply(0, -230), 0)
  assert.strictEqual(multiply(0, 0), 0)
  assert.strictEqual(multiply(123, -22), -2706)
  assert.strictEqual(multiply(-22, 123), -2706)
  assert.strictEqual(multiply(-22, -123), 2706)
  // End of tests */
  