after.rb in rspec-api-docs-0.2.0

- old
+ new

@@ -1,10 +1,27 @@
+require 'rspec_api_docs/after/type_checker'
+
 module RspecApiDocs
-  After = -> (example) do
-    metadata = example.metadata[METADATA_NAMESPACE]
+  UndocumentedParameter = Class.new(BaseError)
 
-    if metadata
+  class After
+    Hook = -> (example) do
+      metadata = example.metadata[METADATA_NAMESPACE]
+      return unless metadata
+
       metadata[:requests] ||= []
       metadata[:requests] << [last_request, last_response]
+
+      return unless RspecApiDocs.configuration.validate_params
+
+      metadata[:requests].each do |request, response|
+        request.params.each do |key, value|
+          if metadata[:parameters] && metadata[:parameters].has_key?(key.to_sym)
+            After::TypeChecker.call(type: metadata[:parameters][key.to_sym][:type], value: value)
+          else
+            raise UndocumentedParameter, "undocumented parameter included in request #{key.inspect}"
+          end
+        end
+      end
     end
   end
 end