test/response_test.rb in ruby-saml-0.8.18 vs test/response_test.rb in ruby-saml-0.9

@@ -1,694 +1,380 @@
 require File.expand_path(File.join(File.dirname(__FILE__), "test_helper"))
 
-class ResponseTest <  Minitest::Test
+class RubySamlTest < Test::Unit::TestCase
 
-  describe "Response" do
-    it "raise an exception when response is initialized with nil" do
-      err = assert_raises(ArgumentError) do
-        OneLogin::RubySaml::Response.new(nil)
-      end
-      assert_equal "Response cannot be nil", err.message
+  context "Response" do
+    should "raise an exception when response is initialized with nil" do
+      assert_raises(ArgumentError) { OneLogin::RubySaml::Response.new(nil) }
     end
 
-    it "be able to parse a document which contains ampersands" do
+    should "be able to parse a document which contains ampersands" do
       XMLSecurity::SignedDocument.any_instance.stubs(:digests_match?).returns(true)
       OneLogin::RubySaml::Response.any_instance.stubs(:validate_conditions).returns(true)
 
       response = OneLogin::RubySaml::Response.new(ampersands_response)
       settings = OneLogin::RubySaml::Settings.new
       settings.idp_cert_fingerprint = 'c51985d947f1be57082025050846eb27f6cab783'
       response.settings = settings
       response.validate!
     end
 
-    it "adapt namespace" do
+    should "adapt namespace" do
       response = OneLogin::RubySaml::Response.new(response_document)
-      assert !response.name_id.nil?
+      assert_not_nil response.name_id
       response = OneLogin::RubySaml::Response.new(response_document_2)
-      assert !response.name_id.nil?
+      assert_not_nil response.name_id
       response = OneLogin::RubySaml::Response.new(response_document_3)
-      assert !response.name_id.nil?
+      assert_not_nil response.name_id
     end
 
-    it "default to raw input when a response is not Base64 encoded" do
+    should "default to raw input when a response is not Base64 encoded" do
       decoded  = Base64.decode64(response_document_2)
       response = OneLogin::RubySaml::Response.new(decoded)
       assert response.document
     end
 
-    describe "Assertion" do
-      it "only retreive an assertion with an ID that matches the signature's reference URI" do
+    context "Assertion" do
+      should "only retreive an assertion with an ID that matches the signature's reference URI" do
         response = OneLogin::RubySaml::Response.new(wrapped_response_2)
         response.stubs(:conditions).returns(nil)
         settings = OneLogin::RubySaml::Settings.new
         settings.idp_cert_fingerprint = signature_fingerprint_1
         response.settings = settings
-        assert response.name_id.nil?
+        assert_nil response.name_id
       end
     end
 
-    describe "#validate!" do
-      it "raise when settings not initialized" do
+    context "#validate!" do
+      should "raise when encountering a condition that prevents the document from being valid" do
         response = OneLogin::RubySaml::Response.new(response_document)
-        err = assert_raises(OneLogin::RubySaml::ValidationError) do
+        assert_raise(OneLogin::RubySaml::ValidationError) do
           response.validate!
         end
-        assert_equal "No settings on response", err.message
       end
+    end
 
-      it "raise when encountering a condition that prevents the document from being valid" do
-        response = OneLogin::RubySaml::Response.new(response_document)
-        response.settings = settings
-        err = assert_raises(OneLogin::RubySaml::ValidationError) do
-          response.validate!
-        end
-        assert_equal "Current time is on or after NotOnOrAfter condition", err.message
+    context "#validate_structure" do
+      should "raise when encountering a condition that prevents the document from being valid" do
+        response = OneLogin::RubySaml::Response.new(response_document_2)
+        response.send(:validate_structure)
+        assert response.errors.include? "Schema validation failed"
       end
-
-      it "raises an exception when no cert or fingerprint provided" do
-        response = OneLogin::RubySaml::Response.new(response_document_valid_signed)
-        response.stubs(:conditions).returns(nil)
-        settings = OneLogin::RubySaml::Settings.new
-        response.settings = settings
-        settings.idp_cert = nil
-        settings.idp_cert_fingerprint = nil
-        err = assert_raises(OneLogin::RubySaml::ValidationError) do
-          response.validate!
-        end
-        assert_equal "No fingerprint or certificate on settings", err.message
-      end
-
-      it "raise when no signature" do
-        response_no_signed_elements = OneLogin::RubySaml::Response.new(read_invalid_response("no_signature.xml.base64"))
-        settings.idp_cert_fingerprint = signature_fingerprint_1
-        response_no_signed_elements.settings = settings
-        err = assert_raises(OneLogin::RubySaml::ValidationError) do
-          response_no_signed_elements.validate!
-        end
-        assert_equal "Found an unexpected number of Signature Element. SAML Response rejected", err.message
-      end
-
-      it "raise when multiple signatures" do
-        response_multiple_signed = OneLogin::RubySaml::Response.new(read_invalid_response("multiple_signed.xml.base64"))
-        settings.idp_cert_fingerprint = signature_fingerprint_1
-        response_multiple_signed.settings = settings
-        response_multiple_signed.stubs(:validate_structure).returns(true)
-        err = assert_raises(OneLogin::RubySaml::ValidationError) do
-          response_multiple_signed.validate!
-        end
-        assert_equal "Duplicated ID. SAML Response rejected", err.message
-      end
-
-      it "raise when fingerprint missmatch" do
-        resp_xml = Base64.decode64(response_document_valid_signed)
-        response = OneLogin::RubySaml::Response.new(Base64.encode64(resp_xml))
-        response.stubs(:conditions).returns(nil)
-        settings = OneLogin::RubySaml::Settings.new
-        settings.idp_cert_fingerprint = signature_fingerprint_1
-        response.settings = settings
-
-        err = assert_raises(OneLogin::RubySaml::ValidationError) do
-          response.validate!
-        end
-        assert_equal 'Fingerprint mismatch', err.message
-      end
-
     end
 
-    describe "#is_valid?" do
-      it "return false when response is initialized with blank data" do
+    context "#is_valid?" do
+      should "return false when response is initialized with blank data" do
         response = OneLogin::RubySaml::Response.new('')
         assert !response.is_valid?
       end
 
-      it "return false if settings have not been set" do
+      should "return false if settings have not been set" do
         response = OneLogin::RubySaml::Response.new(response_document)
         assert !response.is_valid?
       end
 
-      it "return false when no cert or fingerprint provided" do
-        response = OneLogin::RubySaml::Response.new(response_document_valid_signed)
+      should "return true when the response is initialized with valid data" do
+        response = OneLogin::RubySaml::Response.new(response_document_4)
         response.stubs(:conditions).returns(nil)
-        settings = OneLogin::RubySaml::Settings.new
-        response.settings = settings
-        settings.idp_cert = nil
-        settings.idp_cert_fingerprint = nil
         assert !response.is_valid?
-      end
-
-      it "return true when the response is initialized with valid data" do
-        response = OneLogin::RubySaml::Response.new(response_document_valid_signed)
-        response.stubs(:conditions).returns(nil)
-        assert !response.is_valid?
         settings = OneLogin::RubySaml::Settings.new
         assert !response.is_valid?
         response.settings = settings
         assert !response.is_valid?
-        response.settings.idp_cert_fingerprint = signature_fingerprint_valid_res
-        response.validate!
+        settings.idp_cert_fingerprint = signature_fingerprint_1
+        assert response.is_valid?
       end
 
-      it "should be idempotent when the response is initialized with invalid data" do
-        response = OneLogin::RubySaml::Response.new(response_document_valid_signed)
+      should "should be idempotent when the response is initialized with invalid data" do
+        response = OneLogin::RubySaml::Response.new(response_document_4)
         response.stubs(:conditions).returns(nil)
         settings = OneLogin::RubySaml::Settings.new
         response.settings = settings
         assert !response.is_valid?
         assert !response.is_valid?
       end
 
-      it "should be idempotent when the response is initialized with valid data" do
-        response = OneLogin::RubySaml::Response.new(response_document_valid_signed)
+      should "should be idempotent when the response is initialized with valid data" do
+        response = OneLogin::RubySaml::Response.new(response_document_4)
         response.stubs(:conditions).returns(nil)
         settings = OneLogin::RubySaml::Settings.new
         response.settings = settings
-        response.settings.idp_cert_fingerprint = signature_fingerprint_valid_res
+        settings.idp_cert_fingerprint = signature_fingerprint_1
         assert response.is_valid?
         assert response.is_valid?
       end
 
-      it "return true when valid response and using fingerprint" do
-        response = OneLogin::RubySaml::Response.new(response_document_valid_signed)
+      should "return true when using certificate instead of fingerprint" do
+        response = OneLogin::RubySaml::Response.new(response_document_4)
         response.stubs(:conditions).returns(nil)
         settings = OneLogin::RubySaml::Settings.new
         response.settings = settings
-        settings.idp_cert = nil
-        settings.idp_cert_fingerprint = "4B:68:C4:53:C7:D9:94:AA:D9:02:5C:99:D5:EF:CF:56:62:87:FE:8D"
+        settings.idp_cert = signature_1
         assert response.is_valid?
       end
 
-      it "return true when valid response using certificate" do
-        response = OneLogin::RubySaml::Response.new(response_document_valid_signed)
-        response.stubs(:conditions).returns(nil)
-        settings = OneLogin::RubySaml::Settings.new
-        response.settings = settings
-        settings.idp_cert = valid_cert
-        assert response.is_valid?
-      end
-
-      it "not allow signature wrapping attack" do
+      should "not allow signature wrapping attack" do
         response = OneLogin::RubySaml::Response.new(response_document_4)
         response.stubs(:conditions).returns(nil)
         settings = OneLogin::RubySaml::Settings.new
         settings.idp_cert_fingerprint = signature_fingerprint_1
         response.settings = settings
-        assert !response.is_valid?
+        assert response.is_valid?
         assert response.name_id == "[e-mail]"
       end
 
-      it "not allow element wrapping attack" do
-        response_wrapped = OneLogin::RubySaml::Response.new(response_document_wrapped)
-        response_wrapped.stubs(:conditions).returns(nil)
-        response_wrapped.stubs(:validate_subject_confirmation).returns(true)
-        settings = OneLogin::RubySaml::Settings.new
-        response_wrapped.settings = settings
-        response_wrapped.settings.idp_cert_fingerprint = signature_fingerprint_1
-
-        assert !response_wrapped.is_valid?
-        assert_nil response_wrapped.name_id
-      end
-
-      it "support dynamic namespace resolution on signature elements" do
+      should "support dynamic namespace resolution on signature elements" do
         response = OneLogin::RubySaml::Response.new(fixture("no_signature_ns.xml"))
         response.stubs(:conditions).returns(nil)
         settings = OneLogin::RubySaml::Settings.new
         response.settings = settings
         settings.idp_cert_fingerprint = "28:74:9B:E8:1F:E8:10:9C:A8:7C:A9:C3:E3:C5:01:6C:92:1C:B4:BA"
         XMLSecurity::SignedDocument.any_instance.expects(:validate_signature).returns(true)
         assert response.validate!
       end
 
-      it "support signature elements with no KeyInfo if cert provided" do
-        response = OneLogin::RubySaml::Response.new(response_document_valid_signed_without_x509certificate)
-        response.stubs(:conditions).returns(nil)
-        settings = OneLogin::RubySaml::Settings.new
-        response.settings = settings
-        settings.idp_cert = ruby_saml_cert
-        settings.idp_cert_fingerprint = nil
-        XMLSecurity::SignedDocument.any_instance.expects(:validate_signature).returns(true)
-        assert response.validate!
-      end
-
-      it "support signature elements with no KeyInfo if cert provided as text" do
-        response = OneLogin::RubySaml::Response.new(response_document_valid_signed_without_x509certificate)
-        response.stubs(:conditions).returns(nil)
-        settings = OneLogin::RubySaml::Settings.new
-        response.settings = settings
-        settings.idp_cert = ruby_saml_cert_text
-        settings.idp_cert_fingerprint = nil
-        XMLSecurity::SignedDocument.any_instance.expects(:validate_signature).returns(true)
-        assert response.validate!
-      end
-
-      it "returns an error if the signature contains no KeyInfo, cert is not provided and soft" do
-        response = OneLogin::RubySaml::Response.new(response_document_valid_signed_without_x509certificate)
-        response.stubs(:conditions).returns(nil)
-        settings = OneLogin::RubySaml::Settings.new
-        response.settings = settings
-        settings.idp_cert = nil
-        settings.idp_cert_fingerprint = "28:74:9B:E8:1F:E8:10:9C:A8:7C:A9:C3:E3:C5:01:6C:92:1C:B4:BA"
-        assert !response.is_valid?
-      end
-
-      it "raises an exception if the signature contains no KeyInfo, cert is not provided and no soft" do
-        response = OneLogin::RubySaml::Response.new(response_document_valid_signed_without_x509certificate)
-        response.stubs(:conditions).returns(nil)
-        settings = OneLogin::RubySaml::Settings.new
-        response.settings = settings
-        settings.idp_cert = nil
-        settings.idp_cert_fingerprint = "28:74:9B:E8:1F:E8:10:9C:A8:7C:A9:C3:E3:C5:01:6C:92:1C:B4:BA"
-        err = assert_raises(OneLogin::RubySaml::ValidationError) do
-          response.validate!
-        end
-        assert_equal "Certificate element missing in response (ds:X509Certificate) and not cert provided at settings", err.message
-      end
-
-      it "validate ADFS assertions" do
+      should "validate ADFS assertions" do
         response = OneLogin::RubySaml::Response.new(fixture(:adfs_response_sha256))
         response.stubs(:conditions).returns(nil)
         settings = OneLogin::RubySaml::Settings.new
         settings.idp_cert_fingerprint = "28:74:9B:E8:1F:E8:10:9C:A8:7C:A9:C3:E3:C5:01:6C:92:1C:B4:BA"
         response.settings = settings
         assert response.validate!
       end
 
-      it "validate the digest" do
+      should "validate the digest" do
         response = OneLogin::RubySaml::Response.new(r1_response_document_6)
         response.stubs(:conditions).returns(nil)
         settings = OneLogin::RubySaml::Settings.new
         settings.idp_cert = Base64.decode64(r1_signature_2)
         response.settings = settings
         assert response.validate!
       end
 
-      it "Prevent node text with comment (VU#475445) attack" do
-        response_doc = File.read(File.join(File.dirname(__FILE__), "responses", 'response_node_text_attack.xml.base64'))
-        response = OneLogin::RubySaml::Response.new(response_doc)
-
-        assert_equal "[e-mail]", response.name_id
-        assert_equal "smith", response.attributes["surname"]
-      end
-
-      describe '#validate_audience' do
-        it "return true when sp_entity_id not set or empty" do
-          response = OneLogin::RubySaml::Response.new(response_document_valid_signed)
-          response.stubs(:conditions).returns(nil)
-          settings = OneLogin::RubySaml::Settings.new
-          response.settings = settings
-          settings.idp_cert_fingerprint = signature_fingerprint_valid_res
-          assert response.is_valid?
-          settings.sp_entity_id = ''
-          assert response.is_valid?
-        end
-
-        it "return false when sp_entity_id set to incorrectly" do
-          response = OneLogin::RubySaml::Response.new(response_document_valid_signed)
-          response.stubs(:conditions).returns(nil)
-          settings = OneLogin::RubySaml::Settings.new
-          response.settings = settings
-          settings.idp_cert_fingerprint = signature_fingerprint_valid_res
-          settings.sp_entity_id = 'wrong_audience'
-          assert !response.is_valid?
-        end
-
-        it "return true when sp_entity_id set to correctly" do
-          response = OneLogin::RubySaml::Response.new(response_document_valid_signed)
-          response.stubs(:conditions).returns(nil)
-          settings = OneLogin::RubySaml::Settings.new
-          response.settings = settings
-          settings.idp_cert_fingerprint = signature_fingerprint_valid_res
-          settings.sp_entity_id = 'https://someone.example.com/audience'
-          assert response.is_valid?
-        end
-      end
-    end
-
-    describe "#validate_issuer" do
-      it "return true when the issuer of the Message/Assertion matches the IdP entityId" do
-        response = OneLogin::RubySaml::Response.new(response_document_valid_signed)
+      should "validate SAML 2.0 XML structure" do
+        resp_xml = Base64.decode64(response_document_4).gsub(/emailAddress/,'test')
+        response = OneLogin::RubySaml::Response.new(Base64.encode64(resp_xml))
+        response.stubs(:conditions).returns(nil)
+        settings = OneLogin::RubySaml::Settings.new
+        settings.idp_cert_fingerprint = signature_fingerprint_1
         response.settings = settings
-        assert response.send(:validate_issuer)
-
-        response.settings.idp_entity_id = 'https://app.onelogin.com/saml2'
-        assert response.send(:validate_issuer)
+        assert_raises(OneLogin::RubySaml::ValidationError, 'Digest mismatch'){ response.validate! }
       end
-
-      it "return false when the issuer of the Message does not match the IdP entityId" do
-        response = OneLogin::RubySaml::Response.new(read_invalid_response("invalid_issuer_message.xml.base64"))
-        response.settings = settings
-        response.settings.idp_entity_id = 'http://idp.example.com/'
-        assert !response.send(:validate_issuer)
-      end
-
-      it "return false when the issuer of the Assertion does not match the IdP entityId" do
-        response = OneLogin::RubySaml::Response.new(read_invalid_response("invalid_issuer_assertion.xml.base64"))
-        response.settings = settings
-        response.settings.idp_entity_id = 'http://idp.example.com/'
-        assert !response.send(:validate_issuer)
-      end
     end
 
-    describe "#name_id" do
-      it "extract the value of the name id element" do
+    context "#name_id" do
+      should "extract the value of the name id element" do
         response = OneLogin::RubySaml::Response.new(response_document)
         assert_equal "[e-mail]", response.name_id
 
         response = OneLogin::RubySaml::Response.new(response_document_3)
         assert_equal "[e-mail]", response.name_id
       end
 
-      it "be extractable from an OpenSAML response" do
+      should "be extractable from an OpenSAML response" do
         response = OneLogin::RubySaml::Response.new(fixture(:open_saml))
         assert_equal "[e-mail]", response.name_id
       end
 
-      it "be extractable from a Simple SAML PHP response" do
+      should "be extractable from a Simple SAML PHP response" do
         response = OneLogin::RubySaml::Response.new(fixture(:simple_saml_php))
         assert_equal "[e-mail]", response.name_id
       end
     end
 
-    describe "#name_id_format" do
-      it "extract the value of the name id element" do
+    context "#check_conditions" do
+      should "check time conditions" do
         response = OneLogin::RubySaml::Response.new(response_document)
-        response_signed = OneLogin::RubySaml::Response.new(response_document_valid_signed)
-        assert_equal "urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress", response.name_id_format
-        assert_equal "urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress", response_signed.name_id_format
-      end
-    end
-
-    describe "#sessionindex" do
-      it "extract the value of the sessionindex element" do
-        response = OneLogin::RubySaml::Response.new(fixture(:simple_saml_php))
-        assert_equal "_51be37965feb5579d803141076936dc2e9d1d98ebf", response.sessionindex
-      end
-    end
-
-    describe "#response_id and assertion_id" do
-      it "extract the value of the Response and Assertion IDs" do
-        response = OneLogin::RubySaml::Response.new(response_document)
-        assert_equal "GOSAMLR12901174571794", response.response_id
-        assert_equal "pfxa46574df-b3b0-a06a-23c8-636413198772", response.assertion_id
-      end
-    end
-
-    describe "#check_conditions" do
-      it "check time conditions" do
-        response = OneLogin::RubySaml::Response.new(response_document)
         assert !response.send(:validate_conditions, true)
         response = OneLogin::RubySaml::Response.new(response_document_6)
         assert response.send(:validate_conditions, true)
         time     = Time.parse("2011-06-14T18:25:01.516Z")
         Time.stubs(:now).returns(time)
         response = OneLogin::RubySaml::Response.new(response_document_5)
         assert response.send(:validate_conditions, true)
       end
 
-      it "optionally allow for clock drift" do
+      should "optionally allow for clock drift" do
         # The NotBefore condition in the document is 2011-06-14T18:21:01.516Z
-        expected_time = Time.parse("2011-06-14T18:21:01Z")
-        Time.stubs(:now).returns(expected_time)
+        Time.stubs(:now).returns(Time.parse("2011-06-14T18:21:01Z"))
         response = OneLogin::RubySaml::Response.new(response_document_5, :allowed_clock_drift => 0.515)
         assert !response.send(:validate_conditions, true)
 
-        expected_time = Time.parse("2011-06-14T18:21:01Z")
-        Time.stubs(:now).returns(expected_time)
+        Time.stubs(:now).returns(Time.parse("2011-06-14T18:21:01Z"))
         response = OneLogin::RubySaml::Response.new(response_document_5, :allowed_clock_drift => 0.516)
         assert response.send(:validate_conditions, true)
       end
     end
 
-    describe "validate_signature" do
-      it "raises an exception when no cert or fingerprint provided" do
-        response = OneLogin::RubySaml::Response.new(response_document_valid_signed)
-        settings = OneLogin::RubySaml::Settings.new
-        response.settings = settings
-        settings.idp_cert = nil
-        settings.idp_cert_fingerprint = nil
-        err = assert_raises(OneLogin::RubySaml::ValidationError) do
-          response.send(:validate_signature, false)
-        end
-        assert_equal "No fingerprint or certificate on settings", err.message
+    context "#attributes" do
+      should "extract the first attribute in a hash accessed via its symbol" do
+        response = OneLogin::RubySaml::Response.new(response_document)
+        assert_equal "demo", response.attributes[:uid]
       end
 
-      it "raises an exception when wrong cert provided" do
-        response = OneLogin::RubySaml::Response.new(response_document_valid_signed)
-        settings = OneLogin::RubySaml::Settings.new
-        response.settings = settings
-        settings.idp_cert = ruby_saml_cert2
-        settings.idp_cert_fingerprint = nil
-        err = assert_raises(OneLogin::RubySaml::ValidationError) do
-          response.send(:validate_signature, false)
-        end
-        assert_equal "Fingerprint mismatch", err.message
+      should "extract the first attribute in a hash accessed via its name" do
+        response = OneLogin::RubySaml::Response.new(response_document)
+        assert_equal "demo", response.attributes["uid"]
       end
 
-      it "raises an exception when wrong fingerprint provided" do
-        response = OneLogin::RubySaml::Response.new(response_document_valid_signed)
-        settings = OneLogin::RubySaml::Settings.new
-        response.settings = settings
-        settings.idp_cert = nil
-        settings.idp_cert_fingerprint = "28:74:9B:E8:1F:E8:10:9C:A8:7C:A9:C3:E3:C5:01:6C:92:1C:B4:BA"
-        err = assert_raises(OneLogin::RubySaml::ValidationError) do
-          response.send(:validate_signature, false)
-        end
-        assert_equal "Fingerprint mismatch", err.message
+      should "extract all attributes" do
+        response = OneLogin::RubySaml::Response.new(response_document)
+        assert_equal "demo", response.attributes[:uid]
+        assert_equal "value", response.attributes[:another_value]
       end
 
-      it "raises an exception when no signature" do
-        response_no_signed_elements = OneLogin::RubySaml::Response.new(read_invalid_response("no_signature.xml.base64"))
-        settings.idp_cert_fingerprint = signature_fingerprint_1
-        response_no_signed_elements.settings = settings
-        err = assert_raises(OneLogin::RubySaml::ValidationError) do
-          response_no_signed_elements.validate!
-        end
-        assert_equal "Found an unexpected number of Signature Element. SAML Response rejected", err.message
+      should "work for implicit namespaces" do
+        response = OneLogin::RubySaml::Response.new(response_document_3)
+        assert_equal "[e-mail]", response.attributes["http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress"]
       end
-    end
 
-    describe "#attributes" do
-      before do
-        @response = OneLogin::RubySaml::Response.new(response_document)
+      should "not raise errors about nil/empty attributes for EncryptedAttributes" do
+        response = OneLogin::RubySaml::Response.new(response_document_7)
+        assert_equal 'Demo', response.attributes["first_name"]
       end
 
-      it "extract the first attribute in a hash accessed via its symbol" do
-        assert_equal "demo", @response.attributes[:uid]
+      should "not raise on responses without attributes" do
+        response = OneLogin::RubySaml::Response.new(response_document_4)
+        assert_equal OneLogin::RubySaml::Attributes.new, response.attributes
       end
 
-      it "extract the first attribute in a hash accessed via its name" do
-        assert_equal "demo", @response.attributes["uid"]
-      end
+      context "#multiple values" do
+        should "extract single value as string" do
+          response = OneLogin::RubySaml::Response.new(fixture(:response_with_multiple_attribute_values))
+          assert_equal "demo", response.attributes[:uid]
+        end
 
-      it "extract all attributes" do
-        assert_equal "demo", @response.attributes[:uid]
-        assert_equal "value", @response.attributes[:another_value]
-      end
+        should "extract single value as string in compatibility mode off" do
+          response = OneLogin::RubySaml::Response.new(fixture(:response_with_multiple_attribute_values))
+          OneLogin::RubySaml::Attributes.single_value_compatibility = false
+          assert_equal ["demo"], response.attributes[:uid]
+          # classes are not reloaded between tests so restore default
+          OneLogin::RubySaml::Attributes.single_value_compatibility = true
+        end
 
-      it "work for implicit namespaces" do
-        response_3 = OneLogin::RubySaml::Response.new(response_document_3)
-        assert_equal "[e-mail]", response_3.attributes["http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress"]
-      end
+        should "extract first of multiple values as string for b/w compatibility" do
+          response = OneLogin::RubySaml::Response.new(fixture(:response_with_multiple_attribute_values))
+          assert_equal 'value1', response.attributes[:another_value]
+        end
 
-      it "not raise on responses without attributes" do
-        response_4 = OneLogin::RubySaml::Response.new(response_document_4)
-        assert_equal OneLogin::RubySaml::Attributes.new, response_4.attributes
-      end
+        should "extract first of multiple values as string for b/w compatibility in compatibility mode off" do
+          response = OneLogin::RubySaml::Response.new(fixture(:response_with_multiple_attribute_values))
+          OneLogin::RubySaml::Attributes.single_value_compatibility = false
+          assert_equal ['value1', 'value2'], response.attributes[:another_value]
+          OneLogin::RubySaml::Attributes.single_value_compatibility = true
+        end
 
-      it "extract attributes from all AttributeStatement tags" do
-        assert_equal "smith", response_with_multiple_attribute_statements.attributes[:surname]
-        assert_equal "bob", response_with_multiple_attribute_statements.attributes[:firstname]
-      end
+        should "return array with all attributes when asked in XML order" do
+          response = OneLogin::RubySaml::Response.new(fixture(:response_with_multiple_attribute_values))
+          assert_equal ['value1', 'value2'], response.attributes.multi(:another_value)
+        end
 
-      it "be manipulable by hash methods such as #merge and not raise an exception" do
-        @response.attributes.merge({ :testing_attribute => "test" })
-      end
+        should "return array with all attributes when asked in XML order in compatibility mode off" do
+          response = OneLogin::RubySaml::Response.new(fixture(:response_with_multiple_attribute_values))
+          OneLogin::RubySaml::Attributes.single_value_compatibility = false
+          assert_equal ['value1', 'value2'], response.attributes.multi(:another_value)
+          OneLogin::RubySaml::Attributes.single_value_compatibility = true
+        end
 
-      it "be manipulable by hash methods such as #shift and not raise an exception" do
-        @response.attributes.shift
-      end
+        should "return first of multiple values when multiple Attribute tags in XML" do
+          response = OneLogin::RubySaml::Response.new(fixture(:response_with_multiple_attribute_values))
+          assert_equal 'role1', response.attributes[:role]
+        end
 
-      it "be manipulable by hash methods such as #merge! and actually contain the value" do
-        @response.attributes.merge!({ :testing_attribute => "test" })
-        assert @response.attributes[:testing_attribute]
-      end
+        should "return first of multiple values when multiple Attribute tags in XML in compatibility mode off" do
+          response = OneLogin::RubySaml::Response.new(fixture(:response_with_multiple_attribute_values))
+          OneLogin::RubySaml::Attributes.single_value_compatibility = false
+          assert_equal ['role1', 'role2', 'role3'], response.attributes[:role]
+          OneLogin::RubySaml::Attributes.single_value_compatibility = true
+        end
 
-      it "be manipulable by hash methods such as #shift and actually remove the value" do
-        removed_value = @response.attributes.shift
-        assert_nil @response.attributes[removed_value[0]]
+        should "return all of multiple values in reverse order when multiple Attribute tags in XML" do
+          response = OneLogin::RubySaml::Response.new(fixture(:response_with_multiple_attribute_values))
+          assert_equal ['role1', 'role2', 'role3'], response.attributes.multi(:role)
+        end
+
+        should "return all of multiple values in reverse order when multiple Attribute tags in XML in compatibility mode off" do
+          response = OneLogin::RubySaml::Response.new(fixture(:response_with_multiple_attribute_values))
+          OneLogin::RubySaml::Attributes.single_value_compatibility = false
+          assert_equal ['role1', 'role2', 'role3'], response.attributes.multi(:role)
+          OneLogin::RubySaml::Attributes.single_value_compatibility = true
+        end
+
+        should "return nil value correctly" do
+          response = OneLogin::RubySaml::Response.new(fixture(:response_with_multiple_attribute_values))
+          assert_nil response.attributes[:attribute_with_nil_value]
+        end
+
+        should "return nil value correctly when not in compatibility mode off" do
+          response = OneLogin::RubySaml::Response.new(fixture(:response_with_multiple_attribute_values))
+          OneLogin::RubySaml::Attributes.single_value_compatibility = false
+          assert_equal [nil], response.attributes[:attribute_with_nil_value]
+          OneLogin::RubySaml::Attributes.single_value_compatibility = true
+        end
+
+        should "return multiple values including nil and empty string" do
+          response = OneLogin::RubySaml::Response.new(fixture(:response_with_multiple_attribute_values))
+          assert_equal ["", "valuePresent", nil, nil], response.attributes.multi(:attribute_with_nils_and_empty_strings)
+        end
+
+        should "return multiple values from [] when not in compatibility mode off" do
+          response = OneLogin::RubySaml::Response.new(fixture(:response_with_multiple_attribute_values))
+          OneLogin::RubySaml::Attributes.single_value_compatibility = false
+          assert_equal ["", "valuePresent", nil, nil], response.attributes[:attribute_with_nils_and_empty_strings]
+          OneLogin::RubySaml::Attributes.single_value_compatibility = true
+        end
+
+        should "check what happens when trying retrieve attribute that does not exists" do
+          response = OneLogin::RubySaml::Response.new(fixture(:response_with_multiple_attribute_values))
+          assert_equal nil, response.attributes[:attribute_not_exists]
+          assert_equal nil, response.attributes.single(:attribute_not_exists)
+          assert_equal nil, response.attributes.multi(:attribute_not_exists)
+
+          OneLogin::RubySaml::Attributes.single_value_compatibility = false
+          assert_equal nil, response.attributes[:attribute_not_exists]
+          assert_equal nil, response.attributes.single(:attribute_not_exists)
+          assert_equal nil, response.attributes.multi(:attribute_not_exists)
+          OneLogin::RubySaml::Attributes.single_value_compatibility = true
+        end
+
       end
     end
 
-    describe "#session_expires_at" do
-      it "extract the value of the SessionNotOnOrAfter attribute" do
+    context "#session_expires_at" do
+      should "extract the value of the SessionNotOnOrAfter attribute" do
         response = OneLogin::RubySaml::Response.new(response_document)
         assert response.session_expires_at.is_a?(Time)
 
         response = OneLogin::RubySaml::Response.new(response_document_2)
-        assert response.session_expires_at.nil?
+        assert_nil response.session_expires_at
       end
     end
 
-    describe "#issuer" do
-      it "return the issuer inside the response assertion" do
+    context "#issuer" do
+      should "return the issuer inside the response assertion" do
         response = OneLogin::RubySaml::Response.new(response_document)
         assert_equal "https://app.onelogin.com/saml/metadata/13590", response.issuer
       end
 
-      it "return the issuer inside the response" do
+      should "return the issuer inside the response" do
         response = OneLogin::RubySaml::Response.new(response_document_2)
         assert_equal "wibble", response.issuer
       end
     end
 
-    describe "#success" do
-      it "find a status code that says success" do
+    context "#success" do
+      should "find a status code that says success" do
         response = OneLogin::RubySaml::Response.new(response_document)
-        assert response.send(:success?)
+        response.success?
       end
     end
 
-    describe '#xpath_first_from_signed_assertion' do
-      it 'not allow arbitrary code execution' do
+    context '#xpath_first_from_signed_assertion' do
+      should 'not allow arbitrary code execution' do
         malicious_response_document = fixture('response_eval', false)
         response = OneLogin::RubySaml::Response.new(malicious_response_document)
         response.send(:xpath_first_from_signed_assertion)
-        assert_nil $evalled
-      end
-    end
-
-    describe "#multiple values" do
-      it "extract single value as string" do
-        assert_equal "demo", response_multiple_attr_values.attributes[:uid]
-      end
-
-      it "extract single value as string in compatibility mode off" do
-        OneLogin::RubySaml::Attributes.single_value_compatibility = false
-        assert_equal ["demo"], response_multiple_attr_values.attributes[:uid]
-        # classes are not reloaded between tests so restore default
-        OneLogin::RubySaml::Attributes.single_value_compatibility = true
-      end
-
-      it "extract first of multiple values as string for b/w compatibility" do
-        assert_equal 'value1', response_multiple_attr_values.attributes[:another_value]
-      end
-
-      it "extract first of multiple values as string for b/w compatibility in compatibility mode off" do
-        OneLogin::RubySaml::Attributes.single_value_compatibility = false
-        assert_equal ['value1', 'value2'], response_multiple_attr_values.attributes[:another_value]
-        OneLogin::RubySaml::Attributes.single_value_compatibility = true
-      end
-
-      it "return array with all attributes when asked in XML order" do
-        assert_equal ['value1', 'value2'], response_multiple_attr_values.attributes.multi(:another_value)
-      end
-
-      it "return array with all attributes when asked in XML order in compatibility mode off" do
-        OneLogin::RubySaml::Attributes.single_value_compatibility = false
-        assert_equal ['value1', 'value2'], response_multiple_attr_values.attributes.multi(:another_value)
-        OneLogin::RubySaml::Attributes.single_value_compatibility = true
-      end
-
-      it "return first of multiple values when multiple Attribute tags in XML" do
-        assert_equal 'role1', response_multiple_attr_values.attributes[:role]
-      end
-
-      it "return first of multiple values when multiple Attribute tags in XML in compatibility mode off" do
-        OneLogin::RubySaml::Attributes.single_value_compatibility = false
-        assert_equal ['role1', 'role2', 'role3'], response_multiple_attr_values.attributes[:role]
-        OneLogin::RubySaml::Attributes.single_value_compatibility = true
-      end
-
-      it "return all of multiple values in reverse order when multiple Attribute tags in XML" do
-        assert_equal ['role1', 'role2', 'role3'], response_multiple_attr_values.attributes.multi(:role)
-      end
-
-      it "return all of multiple values in reverse order when multiple Attribute tags in XML in compatibility mode off" do
-        OneLogin::RubySaml::Attributes.single_value_compatibility = false
-        assert_equal ['role1', 'role2', 'role3'], response_multiple_attr_values.attributes.multi(:role)
-        OneLogin::RubySaml::Attributes.single_value_compatibility = true
-      end
-
-      it "return all of multiple values when multiple Attribute tags in multiple AttributeStatement tags" do
-        OneLogin::RubySaml::Attributes.single_value_compatibility = false
-        assert_equal ['role1', 'role2', 'role3'], response_with_multiple_attribute_statements.attributes.multi(:role)
-        OneLogin::RubySaml::Attributes.single_value_compatibility = true
-      end
-
-      it "return nil value correctly" do
-        assert_nil response_multiple_attr_values.attributes[:attribute_with_nil_value]
-      end
-
-      it "return nil value correctly when not in compatibility mode off" do
-        OneLogin::RubySaml::Attributes.single_value_compatibility = false
-        assert [nil] == response_multiple_attr_values.attributes[:attribute_with_nil_value]
-        OneLogin::RubySaml::Attributes.single_value_compatibility = true
-      end
-
-      it "return multiple values including nil and empty string" do
-        response = OneLogin::RubySaml::Response.new(fixture(:response_with_multiple_attribute_values))
-        assert_equal ["", "valuePresent", nil, nil], response.attributes.multi(:attribute_with_nils_and_empty_strings)
-      end
-
-      it "return multiple values from [] when not in compatibility mode off" do
-        OneLogin::RubySaml::Attributes.single_value_compatibility = false
-        assert_equal ["", "valuePresent", nil, nil], response_multiple_attr_values.attributes[:attribute_with_nils_and_empty_strings]
-        OneLogin::RubySaml::Attributes.single_value_compatibility = true
-      end
-
-      it "check what happens when trying retrieve attribute that does not exists" do
-        assert_nil response_multiple_attr_values.attributes[:attribute_not_exists]
-        assert_nil response_multiple_attr_values.attributes.single(:attribute_not_exists)
-        assert_nil response_multiple_attr_values.attributes.multi(:attribute_not_exists)
-
-        OneLogin::RubySaml::Attributes.single_value_compatibility = false
-        assert_nil response_multiple_attr_values.attributes[:attribute_not_exists]
-        assert_nil response_multiple_attr_values.attributes.single(:attribute_not_exists)
-        assert_nil response_multiple_attr_values.attributes.multi(:attribute_not_exists)
-        OneLogin::RubySaml::Attributes.single_value_compatibility = true
-      end
-    end
-
-    describe "signature wrapping attack with encrypted assertion" do
-      it "should not be valid" do
-        settings = OneLogin::RubySaml::Settings.new
-        settings.private_key = valid_key
-        signature_wrapping_attack = read_response("encrypted_new_attack.xml.base64")
-        response_wrapped = OneLogin::RubySaml::Response.new(signature_wrapping_attack, :settings => settings)
-        response_wrapped.stubs(:conditions).returns(nil)
-        response_wrapped.stubs(:validate_subject_confirmation).returns(true)
-        settings.idp_cert_fingerprint = "385b1eec71143f00db6af936e2ea12a28771d72c"
-        assert !response_wrapped.is_valid?
-        err = assert_raises(OneLogin::RubySaml::ValidationError) do
-          response_wrapped.validate!
-        end
-        assert_equal "Found an invalid Signed Element. SAML Response rejected", err.message
-      end
-    end
-
-    describe "signature wrapping attack - concealed SAML response body" do
-      it "should not be valid" do
-        settings = OneLogin::RubySaml::Settings.new
-        signature_wrapping_attack = read_response("response_with_concealed_signed_assertion.xml")
-        response_wrapped = OneLogin::RubySaml::Response.new(signature_wrapping_attack, :settings => settings)
-        settings.idp_cert_fingerprint = '4b68c453c7d994aad9025c99d5efcf566287fe8d'
-        response_wrapped.stubs(:conditions).returns(nil)
-        response_wrapped.stubs(:validate_subject_confirmation).returns(true)
-        response_wrapped.stubs(:validate_structure).returns(true)
-        assert !response_wrapped.is_valid?
-        assert !response_wrapped.validate!
-      end
-    end
-
-    describe "signature wrapping attack - doubled signed assertion SAML response" do
-      it "should not be valid" do
-        settings = OneLogin::RubySaml::Settings.new
-        signature_wrapping_attack = read_response("response_with_doubled_signed_assertion.xml")
-        response_wrapped = OneLogin::RubySaml::Response.new(signature_wrapping_attack, :settings => settings)
-        settings.idp_cert_fingerprint = '4b68c453c7d994aad9025c99d5efcf566287fe8d'
-        response_wrapped.stubs(:conditions).returns(nil)
-        response_wrapped.stubs(:validate_subject_confirmation).returns(true)
-        assert !response_wrapped.is_valid?
+        assert_equal($evalled, nil)
       end
     end
   end
 end