mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
401b64c4e8
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62656 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
39 lines
1.1 KiB
Ruby
39 lines
1.1 KiB
Ruby
# -*- encoding: binary -*-
|
|
require_relative '../../spec_helper'
|
|
|
|
describe "Random#bytes" do
|
|
it "returns a String" do
|
|
Random.new.bytes(1).should be_an_instance_of(String)
|
|
end
|
|
|
|
it "returns a String of the length given as argument" do
|
|
Random.new.bytes(15).length.should == 15
|
|
end
|
|
|
|
it "returns an ASCII-8BIT String" do
|
|
Random.new.bytes(15).encoding.should == Encoding::ASCII_8BIT
|
|
end
|
|
|
|
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(bignum_value ** 4)
|
|
rnd.bytes(2).should == "_\x91"
|
|
rnd.bytes(1000) # skip some
|
|
rnd.bytes(2).should == "\x17\x12"
|
|
end
|
|
|
|
it "returns a random binary String" do
|
|
Random.new.bytes(12).should_not == Random.new.bytes(12)
|
|
end
|
|
end
|