Generate a hash with arbitrary depth and keys with fake information. Because why not.

Gemfile

source 'https://rubygems.org'

gem 'faker'

generator.rb

#!/usr/bin/env ruby

require 'json'
require 'faker'

class Generator
  def self.json_object(depth: 1, keys_per_level: 2)
    raise StandardError.new("Incorrect params depth: #{depth} keys: #{keys_per_level}") if depth <= 0 || keys_per_level <= 0

    # one/last depth
    # { key: val, key: val, ... }
    if depth == 1
      Hash.new.tap do |hash|
        keys_per_level.times do
          hash[Faker::Barcode.unique.ean(13).freeze] = Faker::Code.nric(min_age: 1, max_age: 100).freeze
        end
      end
    else
      # n-depth
      # { key: { ... }, key: { ... }, ... }
      Hash.new.tap do |hash|
        keys_per_level.times do |n|
          hash[Faker::Bank.unique.iban] = self.json_object(depth: depth - 1, keys_per_level: keys_per_level)
        end
      end
    end
  end
end

simple =  Generator.json_object#.to_json
complex =  Generator.json_object(depth: 5)#.to_json

pp simple
pp complex