98 lines
2.8 KiB
Ruby
98 lines
2.8 KiB
Ruby
require_relative '../../spec_helper'
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require_relative '../../core/random/shared/rand'
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require 'securerandom'
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describe "SecureRandom.random_number" do
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it_behaves_like :random_number, :rand, SecureRandom
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it_behaves_like :random_number, :random_number, SecureRandom
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it "generates a random positive number smaller then the positive integer argument" do
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(1..64).each do |idx|
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num = SecureRandom.random_number(idx)
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num.should be_kind_of(Fixnum)
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(0 <= num).should == true
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(num < idx).should == true
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end
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end
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it "generates a random (potentially bignum) integer value for bignum argument" do
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max = 12345678901234567890
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11.times do
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num = SecureRandom.random_number max
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num.should be_kind_of(Integer)
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(0 <= num).should == true
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(num < max).should == true
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end
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end
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it "generates a random float number between 0.0 and 1.0 if no argument provided" do
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64.times do
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num = SecureRandom.random_number
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num.should be_kind_of(Float)
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(0.0 <= num).should == true
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(num < 1.0).should == true
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end
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end
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it "generates a random value in given (integer) range limits" do
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64.times do
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num = SecureRandom.random_number 11...13
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num.should be_kind_of(Integer)
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(11 <= num).should == true
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(num < 13).should == true
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end
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end
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it "generates a random value in given big (integer) range limits" do
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lower = 12345678901234567890
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upper = 12345678901234567890 + 5
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32.times do
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num = SecureRandom.random_number lower..upper
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num.should be_kind_of(Integer)
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(lower <= num).should == true
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(num <= upper).should == true
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end
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end
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it "generates a random value in given (float) range limits" do
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64.times do
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num = SecureRandom.random_number 0.6..0.9
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num.should be_kind_of(Float)
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(0.6 <= num).should == true
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(num <= 0.9).should == true
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end
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end
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it "generates a random float number between 0.0 and 1.0 if argument is negative" do
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num = SecureRandom.random_number(-10)
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num.should be_kind_of(Float)
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(0.0 <= num).should == true
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(num < 1.0).should == true
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end
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it "generates a random float number between 0.0 and 1.0 if argument is negative float" do
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num = SecureRandom.random_number(-11.1)
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num.should be_kind_of(Float)
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(0.0 <= num).should == true
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(num < 1.0).should == true
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end
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it "generates different float numbers 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_number
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# make sure the random values 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 if the argument is non-numeric" do
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-> {
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SecureRandom.random_number(Object.new)
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}.should raise_error(ArgumentError)
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end
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end
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