54 lines
1.5 KiB
Ruby
54 lines
1.5 KiB
Ruby
require_relative '../../spec_helper'
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require_relative '../../core/random/shared/bytes'
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require 'securerandom'
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describe "SecureRandom.random_bytes" do
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it_behaves_like :random_bytes, :random_bytes, SecureRandom
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it "generates a random binary string of length 16 if no argument is provided" do
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bytes = SecureRandom.random_bytes
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bytes.should be_kind_of(String)
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bytes.length.should == 16
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end
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it "generates a random binary string of length 16 if argument is nil" do
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bytes = SecureRandom.random_bytes(nil)
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bytes.should be_kind_of(String)
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bytes.length.should == 16
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end
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it "generates a random binary string of specified length" do
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(1..64).each do |idx|
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bytes = SecureRandom.random_bytes(idx)
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bytes.should be_kind_of(String)
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bytes.length.should == idx
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end
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SecureRandom.random_bytes(2.2).length.should eql(2)
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end
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it "generates different binary strings with subsequent invocations" do
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# quick and dirty check, but good enough
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values = []
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256.times do
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val = SecureRandom.random_bytes
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# make sure the random bytes are not repeating
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values.include?(val).should == false
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values << val
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end
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end
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it "raises ArgumentError on negative arguments" do
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-> {
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SecureRandom.random_bytes(-1)
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}.should raise_error(ArgumentError)
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end
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it "tries to convert the passed argument to an Integer using #to_int" do
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obj = mock("to_int")
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obj.should_receive(:to_int).and_return(5)
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SecureRandom.random_bytes(obj).size.should eql(5)
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end
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end
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