3 files changed, 43 insertions, 0 deletions
diff --git a/spec/ruby/library/openssl/random/pseudo_bytes_spec.rb b/spec/ruby/library/openssl/random/pseudo_bytes_spec.rb
new file mode 100644
index 0000000000..83c8cc13c8
--- /dev/null
+++ b/spec/ruby/library/openssl/random/pseudo_bytes_spec.rb
@@ -0,0 +1,8 @@
+require File.expand_path('../../../../spec_helper', __FILE__)
+require File.expand_path('../shared/random_bytes.rb', __FILE__)
+
+if defined?(OpenSSL::Random.pseudo_bytes)
+  describe "OpenSSL::Random.pseudo_bytes" do
+    it_behaves_like :openssl_random_bytes, :pseudo_bytes
+  end
+end
diff --git a/spec/ruby/library/openssl/random/random_bytes_spec.rb b/spec/ruby/library/openssl/random/random_bytes_spec.rb
new file mode 100644
index 0000000000..b8bd209eb0
--- /dev/null
+++ b/spec/ruby/library/openssl/random/random_bytes_spec.rb
@@ -0,0 +1,6 @@
+require File.expand_path('../../../../spec_helper', __FILE__)
+require File.expand_path('../shared/random_bytes.rb', __FILE__)
+
+describe "OpenSSL::Random.random_bytes" do
+  it_behaves_like :openssl_random_bytes, :random_bytes
+end
diff --git a/spec/ruby/library/openssl/random/shared/random_bytes.rb b/spec/ruby/library/openssl/random/shared/random_bytes.rb
new file mode 100644
index 0000000000..399e40de39
--- /dev/null
+++ b/spec/ruby/library/openssl/random/shared/random_bytes.rb
@@ -0,0 +1,29 @@
+require File.expand_path('../../../../../spec_helper', __FILE__)
+require 'openssl'
+
+describe :openssl_random_bytes, shared: true do |cmd|
+  it "generates a random binary string of specified length" do
+    (1..64).each do |idx|
+      bytes = OpenSSL::Random.send(@method, idx)
+      bytes.should be_kind_of(String)
+      bytes.length.should == idx
+    end
+  end
+
+  it "generates different binary strings with subsequent invocations" do
+    # quick and dirty check, but good enough
+    values = []
+    256.times do
+      val = OpenSSL::Random.send(@method, 16)
+      # make sure the random bytes are not repeating
+      values.include?(val).should == false
+      values << val
+    end
+  end
+
+  it "raises ArgumentError on negative arguments" do
+    lambda {
+      OpenSSL::Random.send(@method, -1)
+    }.should raise_error(ArgumentError)
+  end
+end