Add support for mocking a form builder objects

.gitignore

@@ -9,3 +9,5 @@ test/dummy/.sass-cache
 Gemfile.lock
 test/tmp
 *.gem
+
+*.swp

.rubocop.yml

@@ -0,0 +1,4 @@
+AllCops:
+  RunRailsCops: true
+  Exclude:
+    - spec/dummy/db/schema.rb

README.md

@@ -152,6 +152,20 @@ E.g: `app/components/card/card.yml`
   :link: "http://google.com"
 
 ```
+
+If your component depends on a form builder object you can use the following statement:
+
+```yml
+  :meta: 'There is a class with form builder object'
+  :stubs:
+    -
+      :id: 1
+      :form: # form builder required parameter
+        !ruby/object:Something # Mountain View will create a form builder like it was created by `form_for Something.new` helper
+          attributes: # You can set any attributes on Something instance
+            name: "test"
+```
+
 3) Vist `http://localhost:3000/mountain_view/styleguide`
 
 #### Example Style Guide

lib/mountain_view/component.rb

@@ -18,9 +18,9 @@ def styleguide_stubs
 
     def component_stubs
       if styleguide_stubs.is_a?(Hash)
-        styleguide_stubs[:stubs] || {}
+        convert_objects_to_form_objects(styleguide_stubs[:stubs] || {})
       elsif styleguide_stubs.is_a?(Array)
-        styleguide_stubs
+        convert_objects_to_form_objects(styleguide_stubs)
       end
     end
 
@@ -55,5 +55,21 @@ def stubs_correct_format?
     def stubs_are_a_hash_with_info?
       styleguide_stubs.is_a?(Hash) && styleguide_stubs.key?(:stubs)
     end
+
+    def convert_objects_to_form_objects(stubs)
+      case stubs
+      when Hash
+        Hash[stubs.map { |k, stub| [k, convert_objects_to_form_objects(stub)] }]
+      when Enumerable
+        stubs.map { |stub| convert_objects_to_form_objects(stub) }
+      when ActiveRecord::Base
+        ActionView::Base.default_form_builder.new(stubs.model_name.param_key,
+                                                  stubs,
+                                                  ActionView::Base.new,
+                                                  {})
+      else
+        stubs
+      end
+    end
   end
 end

test/dummy/app/components/form_custom_button/_form_custom_button.html.erb

@@ -0,0 +1 @@
+<%= form.button "button text" %>

test/dummy/app/components/form_custom_button/form_custom_button.yml

@@ -0,0 +1,8 @@
+:meta: 'There is a class with form builder object'
+:stubs:
+  -
+    :id: 1
+    :form:
+      !ruby/object:Something
+        attributes:
+          name: "test"

test/dummy/app/components/form_custom_button/form_custom_button_component.rb

@@ -0,0 +1,3 @@
+class FormCustomButtonComponent < MountainView::Presenter
+  property :form
+end

test/dummy/app/components/header/header.yml

@@ -7,3 +7,7 @@
   -
     :id: 2
     :title: "You won't believe what happened to this man at Aspen"
+  -
+    :id: 3
+    :title: "Testing form objects"
+    :form: {form_for: Object}

test/dummy/app/models/something.rb

@@ -0,0 +1,2 @@
+class Something < ActiveRecord::Base
+end

test/dummy/config/application.rb

@@ -1,9 +1,6 @@
 require File.expand_path('../boot', __FILE__)
 
-require "active_support"
-require "action_controller"
-require "action_view"
-require "sprockets/railtie"
+require "rails/all"
 
 Bundler.require(*Rails.groups)
 require "mountain_view"
@@ -36,7 +33,7 @@ class Application < Rails::Application
     # Do not eager load code on boot. This avoids loading your whole application
     # just for the purpose of running a single test. If you are using a tool that
     # preloads Rails for running tests, you may have to set it to true.
-    config.eager_load = false
+    config.eager_load = true
 
     # Configure static asset server for tests with Cache-Control for performance.
     config.static_cache_control = 'public, max-age=3600'

test/dummy/config/database.yml

@@ -18,7 +18,7 @@ development:
 # Do not set this db to the same as development or production.
 test:
   <<: *default
-  database: db/test.sqlite3
+  database: ":memory:"
 
 production:
   <<: *default

test/dummy/db/migrate/20160427131303_create_somethings.rb

@@ -0,0 +1,9 @@
+class CreateSomethings < ActiveRecord::Migration
+  def change
+    create_table :somethings do |t|
+      t.string :name
+
+      t.timestamps null: false
+    end
+  end
+end

test/dummy/db/schema.rb

@@ -0,0 +1,22 @@
+# encoding: UTF-8
+# This file is auto-generated from the current state of the database. Instead
+# of editing this file, please use the migrations feature of Active Record to
+# incrementally modify your database, and then regenerate this schema definition.
+#
+# Note that this schema.rb definition is the authoritative source for your
+# database schema. If you need to create the application database on another
+# system, you should be using db:schema:load, not running all the migrations
+# from scratch. The latter is a flawed and unsustainable approach (the more migrations
+# you'll amass, the slower it'll run and the greater likelihood for issues).
+#
+# It's strongly recommended that you check this file into your version control system.
+
+ActiveRecord::Schema.define(version: 20160427131303) do
+
+  create_table "somethings", force: :cascade do |t|
+    t.string   "name"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
+end

test/mountain_view/component_test.rb

@@ -27,6 +27,11 @@ def test_styleguide_stubs
             },
             { id: 2,
               title: "You won't believe what happened to this man at Aspen"
+            },
+            {
+              id: 3,
+              title: "Testing form objects",
+              form: { "form_for" => "Object" }
             }
           ]
       }
@@ -47,6 +52,11 @@ def test_component_stubs
         {
           id: 2,
           title: "You won't believe what happened to this man at Aspen"
+        },
+        {
+          id: 3,
+          title: "Testing form objects",
+          form: { "form_for" => "Object" }
         }
       ]
     assert_instance_of Array, component.component_stubs

test/mountain_view/presenter_test.rb

@@ -35,4 +35,11 @@ class MountainView::PresenterTest < ActiveSupport::TestCase
     presenter = InheritedPresenter.new("inherited", {})
     assert_equal [], presenter.data
   end
+
+  test "form stubs" do
+    component = MountainView::Component.new("form_custom_button")
+    stub_data = component.component_stubs.first
+    presenter = FormCustomButtonComponent.new("form_custom_button", stub_data)
+    assert_equal ActionView::Helpers::FormBuilder, presenter.form.class
+  end
 end

test/test_helper.rb

@@ -16,3 +16,5 @@
 # for generators
 require "rails/generators/test_case"
 require "generators/mountain_view/component_generator"
+
+load "#{Rails.root}/db/schema.rb"