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ruby--ruby/spec/ruby/core/random/bytes_spec.rb
2022-01-28 14:42:38 +01:00

30 lines
914 B
Ruby

# -*- encoding: binary -*-
require_relative '../../spec_helper'
require_relative 'shared/bytes'
describe "Random#bytes" do
it_behaves_like :random_bytes, :bytes, Random.new
it "returns the same output for a given seed" do
Random.new(33).bytes(2).should == Random.new(33).bytes(2)
end
# Should double check this is official spec
it "returns the same numeric output for a given seed across all implementations and platforms" do
rnd = Random.new(33)
rnd.bytes(2).should == "\x14\\"
rnd.bytes(1000) # skip some
rnd.bytes(2).should == "\xA1p"
end
it "returns the same numeric output for a given huge seed across all implementations and platforms" do
rnd = Random.new(2 ** (63 * 4))
rnd.bytes(2).should == "_\x91"
rnd.bytes(1000) # skip some
rnd.bytes(2).should == "\x17\x12"
end
end
describe "Random.bytes" do
it_behaves_like :random_bytes, :bytes, Random
end