diff options
Diffstat (limited to 'spec/ruby/library/securerandom/random_number_spec.rb')
-rw-r--r-- | spec/ruby/library/securerandom/random_number_spec.rb | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/spec/ruby/library/securerandom/random_number_spec.rb b/spec/ruby/library/securerandom/random_number_spec.rb new file mode 100644 index 0000000000..a23a457df2 --- /dev/null +++ b/spec/ruby/library/securerandom/random_number_spec.rb @@ -0,0 +1,95 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +require 'securerandom' + +describe "SecureRandom.random_number" do + it "generates a random positive number smaller then the positive integer argument" do + (1..64).each do |idx| + num = SecureRandom.random_number(idx) + num.should be_kind_of(Fixnum) + (0 <= num).should == true + (num < idx).should == true + end + end + + it "generates a random (potentially bignum) integer value for bignum argument" do + max = 12345678901234567890 + 11.times do + num = SecureRandom.random_number max + num.should be_kind_of(Integer) + (0 <= num).should == true + (num < max).should == true + end + end + + it "generates a random float number between 0.0 and 1.0 if no argument provided" do + 64.times do + num = SecureRandom.random_number + num.should be_kind_of(Float) + (0.0 <= num).should == true + (num < 1.0).should == true + end + end + + ruby_version_is "2.3" do + it "generates a random value in given (integer) range limits" do + 64.times do + num = SecureRandom.random_number 11...13 + num.should be_kind_of(Integer) + (11 <= num).should == true + (num < 13).should == true + end + end + + it "generates a random value in given big (integer) range limits" do + lower = 12345678901234567890 + upper = 12345678901234567890 + 5 + 32.times do + num = SecureRandom.random_number lower..upper + num.should be_kind_of(Integer) + (lower <= num).should == true + (num <= upper).should == true + end + end + + it "generates a random value in given (float) range limits" do + 64.times do + num = SecureRandom.random_number 0.6..0.9 + num.should be_kind_of(Float) + (0.6 <= num).should == true + (num <= 0.9).should == true + end + end + end + + it "generates a random float number between 0.0 and 1.0 if argument is negative" do + num = SecureRandom.random_number(-10) + num.should be_kind_of(Float) + (0.0 <= num).should == true + (num < 1.0).should == true + end + + it "generates a random float number between 0.0 and 1.0 if argument is negative float" do + num = SecureRandom.random_number(-11.1) + num.should be_kind_of(Float) + (0.0 <= num).should == true + (num < 1.0).should == true + end + + it "generates different float numbers with subsequent invocations" do + # quick and dirty check, but good enough + values = [] + 256.times do + val = SecureRandom.random_number + # make sure the random values are not repeating + values.include?(val).should == false + values << val + end + end + + it "raises ArgumentError if the argument is non-numeric" do + lambda { + SecureRandom.random_number(Object.new) + }.should raise_error(ArgumentError) + end +end |