I am making integration test for my app. I would like to see how cartItems payload my db can write. For that, I have generated cartItems array. Inside that array I have one item called ean. I would like to generate 12 digits random number to ean. But it always return me same number from the array.

I have facing two issue

1. Could not able generate 12 digits ean number
2. When I generate the arrays and the 6 digits ean number always same. But I want random numbers

Here is my code

  const requestParameters = {
        id: "530d275e-5de1-466d-86fe-3993a2563fb6",
        cartItems: new Array(500).fill({
          additionalInfo: '',
          brand: '',
          replace: false,
          basicQuantityUnit: 'KPL',
          collectingPriority: 1000,
          ean: Math.floor(100000   Math.random() * 900000)   10000, // I want to render random 12 digits
          id: '0200097823340',
          itemCount: '1'
        })
    }
    
    console.log(requestParameters)

CodePudding user response：

You've inserted the same item 500 times, but you wanted to create a new one every time. Use map to do this

const requestParameters = {
  id: "530d275e-5de1-466d-86fe-3993a2563fb6",
  cartItems: new Array(5).fill().map(() => ({
    additionalInfo: '',
    brand: '',
    replace: false,
    basicQuantityUnit: 'KPL',
    collectingPriority: 1000,
    ean: Array(12).fill().map(() => Math.floor(Math.random() * 10)).join(''),
    id: '0200097823340',
    itemCount: '1'
  }))
}

console.log(requestParameters)

To generate 12 digits I would use:

Array(12).fill().map(() => Math.floor(Math.random() * 10)).join('')

and if you want it as a number instead of a string use:

 Array(12).fill().map(() => Math.floor(Math.random() * 10)).join('')

CodePudding user response：

Math.floor(100000000000   Math.random() * 900000000000)

This generates 12 digit random numbers and makes sure the first number isn't 0