40 lines
1.2 KiB
Ruby
40 lines
1.2 KiB
Ruby
# -*- encoding: binary -*-
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require File.expand_path('../../../spec_helper', __FILE__)
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describe "Random#bytes" do
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it "returns a String" do
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Random.new.bytes(1).should be_an_instance_of(String)
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end
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it "returns a String of the length given as argument" do
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Random.new.bytes(15).length.should == 15
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end
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it "returns an ASCII-8BIT String" do
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Random.new.bytes(15).encoding.should == Encoding::ASCII_8BIT
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end
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it "returns the same output for a given seed" do
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Random.new(33).bytes(2).should == Random.new(33).bytes(2)
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end
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# Should double check this is official spec
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it "returns the same numeric output for a given seed accross all implementations and platforms" do
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rnd = Random.new(33)
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rnd.bytes(2).should == "\x14\\"
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rnd.bytes(1000) # skip some
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rnd.bytes(2).should == "\xA1p"
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end
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it "returns the same numeric output for a given huge seed accross all implementations and platforms" do
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rnd = Random.new(bignum_value ** 4)
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rnd.bytes(2).should == "_\x91"
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rnd.bytes(1000) # skip some
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rnd.bytes(2).should == "\x17\x12"
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end
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it "returns a random binary String" do
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Random.new.bytes(12).should_not == Random.new.bytes(12)
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end
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end
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