Move spec/rubyspec to spec/ruby for consistency

* Other ruby implementations use the spec/ruby directory.
  [Misc #13792] [ruby-core:82287]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

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