1 files changed, 39 insertions, 0 deletions
diff --git a/spec/ruby/core/random/bytes_spec.rb b/spec/ruby/core/random/bytes_spec.rb
new file mode 100644
index 0000000000..2434a4e72e
--- /dev/null
+++ b/spec/ruby/core/random/bytes_spec.rb
@@ -0,0 +1,39 @@
+# -*- encoding: binary -*-
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Random#bytes" do
+  it "returns a String" do
+    Random.new.bytes(1).should be_an_instance_of(String)
+  end
+
+  it "returns a String of the length given as argument" do
+    Random.new.bytes(15).length.should == 15
+  end
+
+  it "returns an ASCII-8BIT String" do
+    Random.new.bytes(15).encoding.should == Encoding::ASCII_8BIT
+  end
+
+  it "returns the same output for a given seed" do
+    Random.new(33).bytes(2).should == Random.new(33).bytes(2)
+  end
+
+  # Should double check this is official spec
+  it "returns the same numeric output for a given seed accross all implementations and platforms" do
+    rnd = Random.new(33)
+    rnd.bytes(2).should == "\x14\\"
+    rnd.bytes(1000) # skip some
+    rnd.bytes(2).should == "\xA1p"
+  end
+
+  it "returns the same numeric output for a given huge seed accross all implementations and platforms" do
+    rnd = Random.new(bignum_value ** 4)
+    rnd.bytes(2).should == "_\x91"
+    rnd.bytes(1000) # skip some
+    rnd.bytes(2).should == "\x17\x12"
+  end
+
+  it "returns a random binary String" do
+    Random.new.bytes(12).should_not == Random.new.bytes(12)
+  end
+end