3rdparty/modules/stdlib/spec/functions/seeded_rand_string_spec.rb

   1 require 'spec_helper'
   2
   3 describe 'seeded_rand_string' do
   4   it { is_expected.not_to be(nil) }
   5
   6   # Test for erroneous params
   7   it { is_expected.to run.with_params.and_raise_error(ArgumentError, %r{expects between.+got none}i) }
   8   it { is_expected.to run.with_params(1).and_raise_error(ArgumentError, %r{expects between.+got 1}i) }
   9   it { is_expected.to run.with_params('1', 'hello').and_raise_error(ArgumentError, %r{parameter 'length' expects an Integer value}i) }
  10   it { is_expected.to run.with_params(1, 1).and_raise_error(ArgumentError, %r{parameter 'seed' expects a String value}i) }
  11   it { is_expected.to run.with_params(1, 'hello', 1).and_raise_error(ArgumentError, %r{parameter 'charset' expects a.+String}i) }
  12
  13   # Test regular run
  14   it { is_expected.to run.with_params(100, 'hello') }
  15
  16   # Test custom charsets
  17   it { is_expected.to run.with_params(100, 'hello', 'abcd').and_return(%r{[a-d]{100}}) }
  18   it { is_expected.to run.with_params(100, 'hello', 'abcdefgh').and_return(%r{[a-h]{100}}) }
  19   it { is_expected.to run.with_params(100, 'hello', 'ab,|').and_return(%r{[ab,|]{100}}) }
  20
  21   # Test behavior
  22   it 'generates the same string with the same seed' do
  23     rand_str_one = call_function(:seeded_rand_string, 300, 'my_seed')
  24     rand_str_two = call_function(:seeded_rand_string, 300, 'my_seed')
  25
  26     expect(rand_str_one).to eq(rand_str_two)
  27   end
  28   it 'generates different strings if seeded differently' do
  29     rand_str_one = call_function(:seeded_rand_string, 300, 'my_seed_one')
  30     rand_str_two = call_function(:seeded_rand_string, 300, 'my_seed_two')
  31
  32     expect(rand_str_one).not_to eq(rand_str_two)
  33   end
  34 end