MAC signature & body hash calculation check

* Signature calculation example is from the example of MAC spec section 1.2 & 3.2
* Body hash calculation example is from the example of MAC spec section 3.2

ref) http://tools.ietf.org/pdf/draft-ietf-oauth-v2-http-mac-00.pdf

Author: nov

spec/rack/oauth2/access_token/mac/body_hash_spec.rb

@@ -0,0 +1,13 @@
+require 'spec_helper'
+
+describe Rack::OAuth2::AccessToken::MAC::BodyHash do
+  # From the example of MAC spec section 3.2
+  # ref) http://tools.ietf.org/pdf/draft-ietf-oauth-v2-http-mac-00.pdf
+  subject do
+    Rack::OAuth2::AccessToken::MAC::BodyHash.new(
+      :algorithm => 'hmac-sha-1',
+      :raw_body => 'hello=world%21'
+    )
+  end
+  its(:calculate) { should == 'k9kbtCIy0CkI3/FEfpS/oIDjk6k=' }
+end

spec/rack/oauth2/access_token/mac/signature_spec.rb

@@ -0,0 +1,43 @@
+require 'spec_helper'
+
+describe Rack::OAuth2::AccessToken::MAC::Signature do
+
+  # From the example of MAC spec section 1.2
+  # ref) http://tools.ietf.org/pdf/draft-ietf-oauth-v2-http-mac-00.pdf
+  context 'when body_hash is given' do
+    subject do
+      Rack::OAuth2::AccessToken::MAC::Signature.new(
+        :secret      => '8yfrufh348h',
+        :algorithm   => 'hmac-sha-1',
+        :nonce       => '273156:di3hvdf8',
+        :method      => 'POST',
+        :request_uri => '/request',
+        :host        => 'example.com',
+        :port        => 80,
+        :body_hash   => 'k9kbtCIy0CkI3/FEfpS/oIDjk6k=',
+        :ext         => nil
+      )
+    end
+    its(:calculate) { should == 'W7bdMZbv9UWOTadASIQHagZyirA=' }
+  end
+
+  # From the example of MAC spec section 3.2
+  # ref) http://tools.ietf.org/pdf/draft-ietf-oauth-v2-http-mac-00.pdf
+  context 'otherwize' do
+    subject do
+      Rack::OAuth2::AccessToken::MAC::Signature.new(
+        :secret      => '489dks293j39',
+        :algorithm   => 'hmac-sha-1',
+        :nonce       => '264095:dj83hs9s',
+        :method      => 'GET',
+        :request_uri => '/resource/1?b=1&a=2',
+        :host        => 'example.com',
+        :port        => 80,
+        :body_hash   => nil,
+        :ext         => nil
+      )
+    end
+    its(:calculate) { should == 'SLDJd4mg43cjQfElUs3Qub4L6xE=' }
+  end
+
+end