# frozen_string_literal: true

require_relative 'test_helper'

# rubocop:disable Security/Eval,Style/EvalWithLocation

class TestDeterminism < Test::Unit::TestCase

def setup

@all_methods = all_methods.freeze

@first_run = []

end

def test_determinism

Faker::Config.random = Random.new(42)

@all_methods.each_index do |index|

store_result @all_methods[index]

end

@first_run.freeze

Faker::Config.random = Random.new(42)

@all_methods.each_index do |index|

assert deterministic_random? @first_run[index], @all_methods[index]

end

end

private

def deterministic_random?(first, method_name)

second = eval(method_name)

(first == second) || raise(

"#{method_name} has an entropy leak; use \"Faker::Config.random.rand\" or \"Array#sample(random: Faker::Config.random)\". Method to lookup for: sample, shuffle, rand"

)

end

def store_result(method_name)

@first_run << eval(method_name)

rescue StandardError => e

raise %(#{method_name} raised "#{e}")

end

def all_methods

subclasses.map do |subclass|

subclass_methods(subclass).flatten

end.flatten.sort

end

def subclasses

Faker.constants.delete_if do |subclass|

%i[Base Bank Books Cat Char Base58 ChileRut CLI Config Creature Date Dog DragonBall Dota ElderScrolls Fallout Games GamesHalfLife HeroesOfTheStorm Internet JapaneseMedia LeagueOfLegends Movies Myst Overwatch OnePiece Pokemon Religion Sports SwordArtOnline TvShows Time VERSION Witcher WorldOfWarcraft Zelda].include?(subclass)

end.sort

end

def subclass_methods(subclass)

eval("Faker::#{subclass}.public_methods(false) - Faker::Base.public_methods(false)").sort.map do |method|

"Faker::#{subclass}.#{method}"

end.sort

end

end

# rubocop:enable Security/Eval,Style/EvalWithLocation