fix failure when verifying validity of idp_cert_multi certificates

Author: mkilling

lib/onelogin/ruby-saml/idp_metadata_parser.rb

@@ -335,7 +335,8 @@ def merge_certificates_into(parsed_metadata)
             )
           end
         else
-          parsed_metadata[:idp_cert_multi] = certificates
+          # symbolize keys of certificates and pass it on
+          parsed_metadata[:idp_cert_multi] = Hash[certificates.map { |k, v| [k.to_sym, v] }]
         end
       end
 

test/idp_metadata_parser_test.rb

@@ -202,10 +202,10 @@ def initialize; end
       assert_nil settings.idp_cert_fingerprint
       assert_nil settings.idp_cert
       assert_equal 2, settings.idp_cert_multi.size
-      assert settings.idp_cert_multi.key?("signing")
-      assert_equal 2, settings.idp_cert_multi["signing"].size
-      assert settings.idp_cert_multi.key?("encryption")
-      assert_equal 1, settings.idp_cert_multi["encryption"].size
+      assert settings.idp_cert_multi.key?(:signing)
+      assert_equal 2, settings.idp_cert_multi[:signing].size
+      assert settings.idp_cert_multi.key?(:encryption)
+      assert_equal 1, settings.idp_cert_multi[:encryption].size
     end
   end