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# frozen_string_literal: true
module FFaker
# Methods for returning repeatably-random data using the internal
# Random Number Generator. You should not need to use this directly, it is
# automatically included when you `include ModuleUtils` in a FFaker module.
module RandomUtils
# Returns a randon number from the internal Random Number Generator. Can be
# used in place of `rand` or `Kernal.rand`.
def rand(max = nil)
FFaker::Random.rand(max)
end
# Performs Array#sample on `list` using a the internal Random Number
# Generator so that the results are deterministic.
#
# * Returns one random item from `list`.
# * Pass `count: n` in options argument, where `n` is an integer, to
# return *n* items from `list`
def fetch_sample(list, options = {})
if (count = options.delete(:count))
list.sample(count, random: FFaker::Random)
elsif list.is_a?(Range)
FFaker::Random.rand(list)
else
list.sample(random: FFaker::Random)
end
end
# Performs same action as as `Array#suffle` (returns a randomly-reordered
# copy of `list`) except that it uses the internal Random Number Generator
# so that the results are deterministic.
def shuffle(list)
list.shuffle(random: FFaker::Random)
end
end
end
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