Add specs for OpenSSL::Digest#reset

Author: herwinw

library/openssl/digest/reset_spec.rb

@@ -0,0 +1,38 @@
+require_relative '../../../spec_helper'
+require_relative '../../../library/digest/sha1/shared/constants'
+require_relative '../../../library/digest/sha256/shared/constants'
+require_relative '../../../library/digest/sha384/shared/constants'
+require_relative '../../../library/digest/sha512/shared/constants'
+require 'openssl'
+
+describe "OpenSSL::Digest#reset" do
+  describe "resets the state of the digest" do
+    it "works for a SHA1 digest" do
+      digest = OpenSSL::Digest.new('sha1', SHA1Constants::Contents)
+      digest.reset
+      digest.update(SHA1Constants::Contents)
+      digest.digest.should == SHA1Constants::Digest
+    end
+
+    it "works for a SHA256 digest" do
+      digest = OpenSSL::Digest.new('sha256', SHA256Constants::Contents)
+      digest.reset
+      digest.update(SHA256Constants::Contents)
+      digest.digest.should == SHA256Constants::Digest
+    end
+
+    it "works for a SHA384 digest" do
+      digest = OpenSSL::Digest.new('sha384', SHA384Constants::Contents)
+      digest.reset
+      digest.update(SHA384Constants::Contents)
+      digest.digest.should == SHA384Constants::Digest
+    end
+
+    it "works for a SHA512 digest" do
+      digest = OpenSSL::Digest.new('sha512', SHA512Constants::Contents)
+      digest.reset
+      digest.update(SHA512Constants::Contents)
+      digest.digest.should == SHA512Constants::Digest
+    end
+  end
+end