Module: TestDummy::Helper

Extended by:
Helper
Included in:
Helper
Defined in:
lib/test_dummy/helper.rb

Constant Summary collapse

ALPHANUMERIC_SET = 
[
  'a'..'z', 'A'..'Z', '0'..'9'
].collect(&:to_a).flatten.freeze
AVOID_SUBSTRINGS =

There are certain substrings that shouldn’t be emitted as part of the random strings in order to keep them safe and inoffensive. While this is not exhaustive, it should scrub the random strings enough that it would be a stretch to see something wrong with them, at least in English.

Regexp.new(%w[
  ass a55 as5 a5s bal bit btc b1t bul bll bls but btu chi
  ch1 cun cnt dic dik d1c d1k fag f4g fuc fuk fck fcu fkn
  fkc kik kyk k1k jer jrk j3r jew j3w mot m0t m07 mth m7h
  mtr m7r neg n3g ngr nig n1g pak p4k pof p0f poo po0 p00
  que qu3 qee q3e qe3 shi sh1 shy stf sht sfu spi spk sp1
  tar t4r trd wtf wth xxx f1f fif msl mus mlm grl kil kll
].join('|')).freeze
CONSONANTS = 
%w[
  b c d f g h j k l m n p qu r s t v w x z ch cr fr
  nd ng nk nt ph pr rd sh sl sp st th tr 
].freeze
VOWELS = 
%w[ a e i o u y ].freeze

Instance Method Summary collapse

Instance Method Details

#random_phonetic_string(length = 12) ⇒ Object 



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# File 'lib/test_dummy/helper.rb', line 44

def random_phonetic_string(length = 12)
  string = nil
  
  while (!string or AVOID_SUBSTRINGS.match(string))
    string = ''

    length.times do |i|
      string << ((i % 2 != 0) ? CONSONANTS[rand(CONSONANTS.size)] : VOWELS[rand(VOWELS.size)])
    end
  end
  
  # The generated string is probably longer than it needs to be, so trim
  # to fit.
  string.to_s[0, length]
end

#random_string(length = 12) ⇒ Object 



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# File 'lib/test_dummy/helper.rb', line 26

def random_string(length = 12)
  string = nil
  
  while (!string or AVOID_SUBSTRINGS.match(string))
    string = ''

    length.times do
      string << ALPHANUMERIC_SET[rand(ALPHANUMERIC_SET.length)]
    end
    
    # As it's not especially hard to find a random word that passes this
    # simple filter for relatively short strings, the chance of this loop
    # spinning for an extended period of time is very slim.
  end
  
  string
end