Test InvalidParameterError

LICENSE

+The MIT License (MIT)
+
+Copyright (c) 2014 Nicolas Blanco
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

@@ -45,7 +45,8 @@ By declaring parameter types, incoming parameters will automatically be transfor
 
 ### Validations
 
-Encapsulate business logic in a consistent way with validations. If a parameter does not satisfy a particular condition, a `400` error is returned with a message explaining the failure.
+Encapsulate business logic in a consistent way with validations. If a parameter does not satisfy a particular condition, an exception (RailsParam::Param::InvalidParameterError) is raised.
+You may use the [rescue_from](http://api.rubyonrails.org/classes/ActiveSupport/Rescuable/ClassMethods.html#method-i-rescue_from) method in your controller to catch this kind of exception.
 
 - `required`
 - `blank`

bin/autospec

+#!/usr/bin/env ruby
+#
+# This file was generated by Bundler.
+#
+# The application 'autospec' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+require 'pathname'
+ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
+  Pathname.new(__FILE__).realpath)
+
+require 'rubygems'
+require 'bundler/setup'
+
+load Gem.bin_path('rspec-core', 'autospec')

bin/rspec

+#!/usr/bin/env ruby
+#
+# This file was generated by Bundler.
+#
+# The application 'rspec' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+require 'pathname'
+ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
+  Pathname.new(__FILE__).realpath)
+
+require 'rubygems'
+require 'bundler/setup'
+
+load Gem.bin_path('rspec-core', 'rspec')

lib/rails_param/param.rb

@@ -15,21 +15,13 @@ module RailsParam
         params[name] = (options[:default].call if options[:default].respond_to?(:call)) || options[:default] if params[name].nil? and options[:default]
         params[name] = options[:transform].to_proc.call(params[name]) if params[name] and options[:transform]
         validate!(params[name], options)
-      # rescue InvalidParameterError => exception
-      #  if options[:raise]
-      #    exception.param, exception.options = name, options
-      #    raise exception
-      #  end
-
-      #  error = "Invalid Parameter: #{name}"
-      #  if content_type and content_type.match(mime_type(:json))
-      #    error = {message: error, errors: {name => exception.message}}.to_json
-      #  end
-
-      #  # do something with error object
+      rescue InvalidParameterError => exception
+        exception.param, exception.options = name, options
+        raise exception
       end
     end
 
+    # TODO: should we reintegrate this method?
     # def one_of!(*names)
     #   count = 0
     #   names.each do |name|

rails_param.gemspec

@@ -9,7 +9,7 @@ Gem::Specification.new do |s|
   s.authors     = ["Nicolas Blanco"]
   s.email       = 'nicolas@nicolasblanco.fr'
   s.homepage    = 'http://github.com/nicolasblanco/rails_param'
-  s.license     = 'WTFPL'
+  s.license     = 'MIT'
 
   s.description = %q{
     Parameter Validation and Type Coercion for Rails

spec/rails_integration_spec.rb

 require 'fixtures/controllers'
 require 'rspec/rails'
+require 'pry'
 
 describe FakeController, type: :controller do
   describe "type coercion" do
@@ -10,9 +11,13 @@ describe FakeController, type: :controller do
     end
   end
 
-  describe ":raise parameter" do
-    it "raises an exception if set" do
-      expect { get :index, sort: "foo" }.to raise_error(RailsParam::Param::InvalidParameterError)
+  describe "InvalidParameterError" do
+    it "raises an exception with params attributes" do
+      expect { get :index, sort: "foo" }.to raise_error { |error|
+        expect(error).to be_a(RailsParam::Param::InvalidParameterError)
+        expect(error.param).to eql("sort")
+        expect(error.options).to eql({ :in => ["asc", "desc"], :default => "asc", :transform => :downcase })
+      }
     end
   end