migrating to jbuilder for json, adding controller specs

Gemfile.lock

@@ -129,7 +129,7 @@ GEM
       guard (~> 2.0)
       guard (~> 2.0)
       rubocop (~> 0.20)
       rubocop (~> 0.20)
     hashdiff (0.3.2)
     hashdiff (0.3.2)
-    hashie (3.5.1)
+    hashie (3.5.3)
     httparty (0.14.0)
     httparty (0.14.0)
       multi_xml (>= 0.5.2)
       multi_xml (>= 0.5.2)
     i18n (0.8.0)
     i18n (0.8.0)

app/controllers/dbs_controller.rb

@@ -3,45 +3,58 @@
 # Controller for Database Objects
 # Controller for Database Objects
 class DbsController < ApplicationController
 class DbsController < ApplicationController
   before_action :authenticate_user!
   before_action :authenticate_user!
+  before_action :set_db, only: [:show, :update]
+  before_action :authorize_viewer, only: [:show]
+  before_action :authorize_owner, only: [:update]
 
 
+  # GET /dbs
+  # GET /dbs.json
   def show
   def show
     db = Db.find(params[:id])
     db = Db.find(params[:id])
+    head(:unauthorized) && return unless current_user.views_nilm?(db.nilm)
     render json: db
     render json: db
   end
   end
 
 
+  # PATCH/PUT /dbs/1
+  # PATCH/PUT /dbs/1.json
   def update
   def update
-    db = Db.find(params[:id])
-    prev_url = db.url
-    if db.update_attributes(db_params)
-      if(prev_url != db.url || params[:refresh])
-        refresh(db) and return
-      end
-      stub = StubService.new()
-      stub.add_notice("database updated")
-      render json: {data: db,
-                    messages: stub}
+    @service = StubService.new
+    prev_url = @db.url
+    if @db.update_attributes(db_params)
+      if prev_url != @db.url || params[:refresh]
+        # refresh the database
+        @service = refresh
+        render status: @service.success? ? :ok : :unprocessable_entity
+      else
+        @service.add_notice('database updated')
+        render status: :ok
+      end
     else
     else
-      render json: "adfs"
+      @service.errors = @db.errors.full_messages
+      render status: :unprocessable_entity
     end
     end
   end
   end
 
 
   private
   private
 
 
-    def refresh(db)
-      adapter = DbAdapter.new(db.url)
-      service = UpdateDb.new(db: db)
-      service.run(adapter.dbinfo, adapter.schema)
-      if(service.success?)
-        render json: {data: db, messages: service}
-      else
-        render json: {data: nil, messages: service},
-          status: :unprocessable_entity
-      end
+    def refresh
+      adapter = DbAdapter.new(@db.url)
+      service = UpdateDb.new(db: @db)
+      return service.run(adapter.dbinfo, adapter.schema)
     end
     end
 
 
-
     def db_params
     def db_params
       params.permit(:url, :max_points_per_plot)
       params.permit(:url, :max_points_per_plot)
     end
     end
-
+    def set_db
+      @db = Db.find(params[:id])
+      @nilm = @db.nilm
+    end
+    #authorization based on nilms
+    def authorize_owner
+      head :unauthorized  unless current_user.owns_nilm?(@nilm)
+    end
+    def authorize_viewer
+      head :unauthorized  unless current_user.views_nilm?(@nilm)
+    end
 end
 end

app/controllers/nilms_controller.rb

@@ -3,14 +3,52 @@
 # controller for NILM objects
 # controller for NILM objects
 class NilmsController < ApplicationController
 class NilmsController < ApplicationController
   before_action :authenticate_user!
   before_action :authenticate_user!
+  before_action :set_nilm, only: [:show, :update]
+  before_action :authorize_viewer, only: [:show]
+  before_action :authorize_owner, only: [:update]
 
 
+  # GET /nilms
+  # GET /nilms.json
   def index
   def index
-    nilms = Nilm.all
-    render json: nilms
+    @nilms = current_user.retrieve_nilms_by_permission
   end
   end
 
 
+  # GET /nilms/1
+  # GET /nilms/1.json
   def show
   def show
-    nilm = Nilm.find(params[:id])
-    render json: nilm
+    # renders nilms/show
+  end
+
+  # PATCH/PUT /nilms/1
+  # PATCH/PUT /nilms/1.json
+  def update
+    @service = StubService.new
+    if @nilm.update(nilm_params)
+      @service.add_notice('NILM Updated')
+      render status: :ok
+    else
+      @service.errors = @nilm.errors
+      render status: :unprocessable_entity
+    end
+  end
+
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_nilm
+      @nilm = Nilm.find(params[:id])
+    end
+
+    # Never trust parameters from the scary internet, only allow the white list through.
+    def nilm_params
+      params.permit(:name, :description,:url)
+    end
+
+    #authorization based on nilms
+    def authorize_owner
+      head :unauthorized  unless current_user.owns_nilm?(@nilm)
+    end
+    def authorize_viewer
+      head :unauthorized  unless current_user.views_nilm?(@nilm)
     end
     end
 end
 end

app/controllers/permissions_controller.rb

+class PermissionsController < ApplicationController
+  before_action :set_permission, only: [:show, :update, :destroy]
+
+  # GET /permissions
+  # GET /permissions.json
+  def index
+    @permissions = Permission.all
+  end
+
+  # GET /permissions/1
+  # GET /permissions/1.json
+  def show
+  end
+
+  # POST /permissions
+  # POST /permissions.json
+  def create
+    @permission = Permission.new(permission_params)
+
+    if @permission.save
+      render :show, status: :created, location: @permission
+    else
+      render json: @permission.errors, status: :unprocessable_entity
+    end
+  end
+
+  # PATCH/PUT /permissions/1
+  # PATCH/PUT /permissions/1.json
+  def update
+    if @permission.update(permission_params)
+      render :show, status: :ok, location: @permission
+    else
+      render json: @permission.errors, status: :unprocessable_entity
+    end
+  end
+
+  # DELETE /permissions/1
+  # DELETE /permissions/1.json
+  def destroy
+    @permission.destroy
+  end
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_permission
+      @permission = Permission.find(params[:id])
+    end
+
+    # Never trust parameters from the scary internet, only allow the white list through.
+    def permission_params
+      params.fetch(:permission, {})
+    end
+end

app/controllers/user_groups_controller.rb

+class UserGroupsController < ApplicationController
+  before_action :set_user_group, only: [:show, :update, :destroy]
+
+  # GET /user_groups
+  # GET /user_groups.json
+  def index
+    @user_groups = UserGroup.all
+  end
+
+  # GET /user_groups/1
+  # GET /user_groups/1.json
+  def show
+  end
+
+  # POST /user_groups
+  # POST /user_groups.json
+  def create
+    @user_group = UserGroup.new(user_group_params)
+
+    if @user_group.save
+      render :show, status: :created, location: @user_group
+    else
+      render json: @user_group.errors, status: :unprocessable_entity
+    end
+  end
+
+  # PATCH/PUT /user_groups/1
+  # PATCH/PUT /user_groups/1.json
+  def update
+    if @user_group.update(user_group_params)
+      render :show, status: :ok, location: @user_group
+    else
+      render json: @user_group.errors, status: :unprocessable_entity
+    end
+  end
+
+  # DELETE /user_groups/1
+  # DELETE /user_groups/1.json
+  def destroy
+    @user_group.destroy
+  end
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_user_group
+      @user_group = UserGroup.find(params[:id])
+    end
+
+    # Never trust parameters from the scary internet, only allow the white list through.
+    def user_group_params
+      params.fetch(:user_group, {})
+    end
+end

app/models/db.rb

@@ -2,12 +2,17 @@
 
 
 # Database object
 # Database object
 class Db < ApplicationRecord
 class Db < ApplicationRecord
+
+  #---Associations----
   belongs_to :root_folder,
   belongs_to :root_folder,
              foreign_key: 'db_folder_id',
              foreign_key: 'db_folder_id',
              class_name: 'DbFolder',
              class_name: 'DbFolder',
              dependent: :destroy
              dependent: :destroy
   belongs_to :nilm
   belongs_to :nilm
 
 
+  #---Validations
+  validates :max_points_per_plot, numericality: { only_integer: true }
+
   def url
   def url
     # return a custom URL if set
     # return a custom URL if set
     return super unless super.nil? || super.empty?
     return super unless super.nil? || super.empty?
@@ -17,9 +22,9 @@ class Db < ApplicationRecord
     "#{nilm.url}/nilmdb"
     "#{nilm.url}/nilmdb"
   end
   end
 
 
-  def as_json(options = {})
-    db = super(except: [:created_at, :updated_at])
-    db[:contents] = root_folder.as_json({shallow: false})
-    db
-  end
+  # def as_json(options = {})
+  #  db = super(except: [:created_at, :updated_at])
+  #  db[:contents] = root_folder.as_json({shallow: false})
+  #  db
+  # end
 end
 end

app/models/nilm.rb

@@ -2,12 +2,20 @@
 
 
 # NILM object
 # NILM object
 class Nilm < ApplicationRecord
 class Nilm < ApplicationRecord
+
+  #---Associations-----
   has_one :db
   has_one :db
+  has_many :permissions, dependent: :destroy #viewer, owner, admin
+  has_many :users, through: :permissions
+  has_many :user_groups, through: :permissions
+
+  #---Validations-----
+  validates :name, presence: true
   
   
-  def as_json(_options = {})
-    nilm = super(except: [:created_at, :updated_at])
-    nilm[:available] = db.available
-    nilm[:db] = db.as_json()
-    nilm
-  end
+#  def as_json(_options = {})
+#    nilm = super(except: [:created_at, :updated_at])
+#    nilm[:available] = db.available
+#    nilm[:db] = db.as_json()
+#    nilm
+#  end
 end
 end

app/models/permission.rb

+class Permission < ApplicationRecord
+  #---Associations----
+  belongs_to :user
+  belongs_to :user_group
+  belongs_to :nilm
+end

app/models/user.rb

 class User < ActiveRecord::Base
 class User < ActiveRecord::Base
-  # Include default devise modules.
+  #---Attributes------
   devise :database_authenticatable, :registerable,
   devise :database_authenticatable, :registerable,
           :recoverable, :rememberable, :trackable, :validatable,
           :recoverable, :rememberable, :trackable, :validatable,
           :confirmable, :omniauthable
           :confirmable, :omniauthable
   include DeviseTokenAuth::Concerns::User
   include DeviseTokenAuth::Concerns::User
+
+  #---Associations----
+  has_many :permissions
+  has_many :nilms, through: :permissions
+  has_and_belongs_to_many :user_groups
+
+  #---Validations-----
+  validates :first_name, :last_name, :email, :presence => true
+  validates :email, :uniqueness => true
+  validates :password, :confirmation => true
+
+  # ----------------------------------------
+  # :section: Permission Checkers
+  # ----------------------------------------
+
+  # Returns a dict of nilms this user can access
+  # nilms are grouped by role (+admin+,+owner+,+viewer+). Nilms are unique
+  # and assigned to the highest permission bin. If a user has direct permissions as +owner+ on
+  # an nilm and also +viewer+ permissions through a group, the nilm will be in
+  # the +owner+ array only.
+  #
+  # ==== Example
+  #   nilms = {
+  #     :admin =>  [x, y, z],
+  #     :owner =>  [m, n],
+  #     :viewer => []
+  #   }
+  #
+  def retrieve_nilms_by_permission
+    #return Nilm's categorized by permission level (viewer, admin, owner)
+    nilms = {}
+    roles=[:admin,:owner,:viewer]
+    #only account for each nilm once- use the highest permission level
+    allowed_nilms = []
+    roles.each do |role|
+      #first get NILM's explicitly related to this user
+      user_nilms = self.nilms.where(permissions:{role: role})
+      allowed_nilms+= user_nilms.pluck(:id)
+
+      #add NILM's related through a user_group
+      User.joins(:user_groups, :permissions, :nilms)
+      user_groups = self.user_groups
+      group_nilms = Nilm.joins(permissions: :user_group).where(permissions:{role: role}).
+         where(user_groups: {id: user_groups.pluck(:id)})
+      if(not allowed_nilms.empty?)
+        group_nilms = group_nilms.where("nilms.id NOT IN (?)", allowed_nilms)
+      end
+      allowed_nilms += group_nilms.pluck(:id)
+      nilms[role] = user_nilms + group_nilms
+    end
+    return nilms
+  end
+
+  #returns true if the user has +admin+ privileges either directly or through a group
+  def admins_nilm?(nilm)
+    return self.has_permission("admin",nilm)
+  end
+
+  #returns true if the user has <em>at least</em> +owner+ privileges either directly or through a group
+  def owns_nilm?(nilm)
+    return self.has_permission(["admin","owner"],nilm)
+  end
+
+
+  #returns true if the user has <em> at least</em> +viewer+ privileges either directly or through a group
+  def views_nilm?(nilm)
+    return self.has_permission(["admin","owner","viewer"],nilm)
+  end
+
+  protected
+
+
+    # :category: Permission Checkers
+    #
+    # checks if the user has either direct or group permissions of one or more specified +roles+
+    # on a specified +nilm+
+    #
+    # ===attributes
+    # * +roles+: array of roles [+admin+,+owner+,+viewer+]
+    # * +nilm+: nilm object to check
+    #
+    def has_permission(roles,nilm)
+      #check if user has [roles] on the nilm directly
+      answer = self.nilms.where(permissions:{role: roles}, id: nilm.id).exists?
+      if(answer == false) #if not, check if he has [roles] through a group
+        answer = Nilm.joins(permissions: :user_group).
+              where(permissions:{role: roles}).
+              where(user_groups: {id: self.user_groups.pluck(:id)}).
+              where(nilms: {id: nilm.id}).exists?
+      end
+      return answer
+    end
 end
 end

app/models/user_group.rb

+# Logical groups of users for bulk permission assignment. The group has a single
+# +owner+ who alone can add and remove members. Permissions inherited through a group
+# assignment are merged with individually assigned permissions with the highest permission
+# level taking precedence. That is you can't be demoted by being assigned to a group.
+#
+# ===Accessible Attributes
+# * +attr+ - descrip
+#
+# ===Protected Attributes
+# * +name+ - friendly name
+# * +description+ - description of the group
+# * +owner+ - User object
+#
+class UserGroup < ApplicationRecord
+  #---Associations----
+  has_and_belongs_to_many :users
+  belongs_to :owner, class_name: "User"
+  has_many :permissions
+  has_many :nilms, through: :permissions
+
+  #---Validations-----
+  validates :name, :presence => true, :uniqueness => true
+  validates :description, :presence => true
+  validates :owner_id, :presence => true
+
+
+  #---------------
+  #:section: Utility Methods
+  #---------------
+
+  # Returns a json model of the UserGroup.
+  # ===attributes
+  # * +options+: hash, pass <tt>{}</tt> for no options, or <tt>{:include_members=>true}</tt>
+  #
+  # ===examples
+  #
+  #  #Just the group
+  #  user_group.as_json({}) =
+  #  {"name"        => "Lab Group",
+  #   "description" => "Users working on NILM in the lab",
+  #   "id"          => 3}
+  #
+  #  #Include the members
+  #  user_group.as_json({:include_members=>true}) =
+  #  {"name"        => "Lab Group",
+  #   "description" => "Users working on NILM in the lab",
+  #   "id"          => 3}
+  #   :members      => [
+  #       {"first_name" => "John",
+  #        "last_name"  => "Ledner",
+  #        "id"         => 3,
+  #        :confirmed   => true,
+  #        }, ... ]
+  #   }
+  def as_json(options)
+     group = super(only: [:name, :description, :id])
+     if(options[:include_members])
+       group[:members] = self.users.as_json(:abbreviated=>true)
+     end
+     return group
+  end
+end

app/services/service_status.rb

@@ -14,7 +14,7 @@
 #
 #
 module ServiceStatus
 module ServiceStatus
   attr_reader :errors, :warnings, :notices
   attr_reader :errors, :warnings, :notices
-
+  attr_writer :errors #errors can be set in bulk
   FAIL_ON_ERROR   = 0
   FAIL_ON_ERROR   = 0
   FAIL_ON_WARNING = 1
   FAIL_ON_WARNING = 1
   NEVER_FAIL      = 2
   NEVER_FAIL      = 2

app/views/db_folders/_db_folder.json.jbuilder

+
+json.extract! db_folder, :id, :name, :description, :path, :hidden,
+                         :start_time, :end_time, :size_on_disk
+json.shallow shallow
+unless(shallow)
+  json.subfolders do
+    json.array! db_folder.subfolders, partial: 'db_folders/db_folder',
+                as: :db_folder, shallow: true
+  end
+  json.streams do
+    json.array! db_folder.db_streams, partial: 'db_streams/db_stream',
+                as: :db_stream
+  end
+end

app/views/db_folders/show.json.jbuilder

+json.partial! "db_folders/db_folder", db_folder: @db_folder, shallow: false

app/views/db_folders/update.json.jbuilder

+json.data do
+  json.partial! "db_folders/db_folder", db_folder: @db_folder, shallow: false
+end
+
+json.partial! "helpers/messages", service: @service

app/views/db_streams/_db_element.json.jbuilder

+json.extract! db_element, :id, :name, :units, :column, :default_max,
+                          :default_min, :scale_factor, :offset, :plottable,
+                          :discrete 

app/views/db_streams/_db_streams.json.jbuilder

+
+json.extract! db_stream, :id, :name, :description, :path, :start_time,
+                         :end_time, :size_on_disk, :total_rows, :total_time,
+                         :data_type, :name_abbrev, :delete_locked, :hidden
+                         
+json.elements json.array! db_stream.elements,
+                            partial: 'db_streams/db_element',
+                            as: :db_element

app/views/db_streams/show.json.jbuilder

+json.partial! "db_folders/db_folder", db_folder: @db_folder, shallow: false

app/views/db_streams/update.json.jbuilder

+json.data do
+  json.partial! "db_folders/db_folder", db_folder: @db_folder, shallow: false
+end
+
+json.partial! "helpers/messages", service: @service

app/views/dbs/_db.json.jbuilder

+json.extract! db, :id, :url, :size_total, :size_db,
+                  :size_other, :version, :max_points_per_plot,
+                  :available
+json.contents do
+  json.partial! "db_folders/db_folder", db_folder: @db.root_folder,
+                                        shallow: false
+end

app/views/dbs/show.json.jbuilder

+json.partial! "dbs/db", nilm: @db

app/views/dbs/update.json.jbuilder

+json.data do
+  json.partial! "dbs/db", db: @db
+end
+
+json.partial! "helpers/messages", service: @service

app/views/helpers/_messages.json.jbuilder

+# expects service to be a service object
+json.messages do
+  json.notices service.notices
+  json.warnings service.warnings
+  json.errors service.errors
+end

app/views/nilms/_nilm.json.jbuilder

+json.extract! nilm, :id, :name, :description, :url
+json.available nilm.db.available

app/views/nilms/index.json.jbuilder

+json.admin do
+  json.array! @nilms[:admin],  partial: 'nilms/nilm', as: :nilm
+end
+json.owner do
+  json.array! @nilms[:owner],  partial: 'nilms/nilm', as: :nilm
+end
+json.viewer do
+  json.array! @nilms[:viewer], partial: 'nilms/nilm', as: :nilm
+end

app/views/nilms/show.json.jbuilder

+json.partial! "nilms/nilm", nilm: @nilm

app/views/nilms/update.json.jbuilder

+json.data do
+  json.partial! "nilms/nilm", nilm: @nilm
+end
+
+json.partial! "helpers/messages", service: @service

app/views/permissions/_permission.json.jbuilder

+json.extract! permission, :id, :created_at, :updated_at
+json.url permission_url(permission, format: :json)
\ No newline at end of file

app/views/permissions/index.json.jbuilder

+json.array! @permissions, partial: 'permissions/permission', as: :permission
\ No newline at end of file

app/views/permissions/show.json.jbuilder

+json.partial! "permissions/permission", permission: @permission
\ No newline at end of file

app/views/user_groups/_user_group.json.jbuilder

+json.extract! user_group, :id, :created_at, :updated_at
+json.url user_group_url(user_group, format: :json)
\ No newline at end of file

app/views/user_groups/index.json.jbuilder

+json.array! @user_groups, partial: 'user_groups/user_group', as: :user_group
\ No newline at end of file

app/views/user_groups/show.json.jbuilder

+json.partial! "user_groups/user_group", user_group: @user_group
\ No newline at end of file

bin/rspec

 #!/usr/bin/env ruby
 #!/usr/bin/env ruby
-begin
-  load File.expand_path('../spring', __FILE__)
-rescue LoadError => e
-  raise unless e.message.include?('spring')
-end
 # frozen_string_literal: true
 # frozen_string_literal: true
 #
 #
 # This file was generated by Bundler.
 # This file was generated by Bundler.

bin/spring

 #!/usr/bin/env ruby
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+#
+# This file was generated by Bundler.
+#
+# The application 'spring' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
 
 
-# This file loads spring without using Bundler, in order to be fast.
-# It gets overwritten when you run the `spring binstub` command.
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+  Pathname.new(__FILE__).realpath)
 
 
-unless defined?(Spring)
-  require 'rubygems'
-  require 'bundler'
+require "rubygems"
+require "bundler/setup"
 
 
-  if (match = Bundler.default_lockfile.read.match(/^GEM$.*?^    (?:  )*spring \((.*?)\)$.*?^$/m))
-    Gem.paths = { 'GEM_PATH' => [Bundler.bundle_path.to_s, *Gem.path].uniq.join(Gem.path_separator) }
-    gem 'spring', match[1]
-    require 'spring/binstub'
-  end
-end
+load Gem.bin_path("spring", "spring")

config/routes.rb

 Rails.application.routes.draw do
 Rails.application.routes.draw do
+  resources :user_groups
+  resources :permissions
   mount_devise_token_auth_for 'User', at: 'auth'
   mount_devise_token_auth_for 'User', at: 'auth'
   resources :db_decimations
   resources :db_decimations
   resources :nilms
   resources :nilms

db/migrate/20170212004708_add_permissions.rb

+class AddPermissions < ActiveRecord::Migration[5.0]
+  def change
+
+    create_table "permissions", :force => true do |t|
+    t.integer  "installation_id"
+    t.datetime "created_at",      :null => false
+    t.datetime "updated_at",      :null => false
+    t.integer  "user_id"
+    t.integer  "user_group_id"
+    t.string   "role"
+  end
+  
+  end
+end

db/migrate/20170212010025_create_permissions.rb

+class CreatePermissions < ActiveRecord::Migration[5.0]
+  def change
+    create_table :permissions do |t|
+      t.integer  "nilm_id"
+      t.integer  "user_id"
+      t.string "role"
+      t.timestamps
+    end
+  end
+end

db/migrate/20170214024858_create_user_groups.rb

+class CreateUserGroups < ActiveRecord::Migration[5.0]
+  def change
+    create_table :user_groups do |t|
+      t.string   "name"
+      t.string   "description"
+      t.integer  "owner_id"
+      t.timestamps
+    end
+  end
+end

db/migrate/20170214030136_fix_permissions_table.rb

+class FixPermissionsTable < ActiveRecord::Migration[5.0]
+  def change
+    rename_column :permissions, :installation_id, :nilm_id
+  end
+end

db/migrate/20170214031515_add_user_groups_join_table.rb

+class AddUserGroupsJoinTable < ActiveRecord::Migration[5.0]
+  def change
+    create_table :user_groups_users, id: false do |t|
+      t.integer :user_group_id
+      t.integer :user_id
+    end
+    add_index :user_groups_users, :user_group_id
+    add_index :user_groups_users, :user_id
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 #
 # It's strongly recommended that you check this file into your version control system.
 # It's strongly recommended that you check this file into your version control system.
 
 
-ActiveRecord::Schema.define(version: 20170204010933) do
+ActiveRecord::Schema.define(version: 20170214031515) do
 
 
   create_table "db_decimations", force: :cascade do |t|
   create_table "db_decimations", force: :cascade do |t|
     t.integer  "start_time",   limit: 8
     t.integer  "start_time",   limit: 8
@@ -94,6 +94,30 @@ ActiveRecord::Schema.define(version: 20170204010933) do
     t.datetime "updated_at",  null: false
     t.datetime "updated_at",  null: false
   end
   end
 
 
+  create_table "permissions", force: :cascade do |t|
+    t.integer  "nilm_id"
+    t.datetime "created_at",    null: false
+    t.datetime "updated_at",    null: false
+    t.integer  "user_id"
+    t.integer  "user_group_id"
+    t.string   "role"
+  end
+
+  create_table "user_groups", force: :cascade do |t|
+    t.string   "name"
+    t.string   "description"
+    t.integer  "owner_id"
+    t.datetime "created_at",  null: false
+    t.datetime "updated_at",  null: false
+  end
+
+  create_table "user_groups_users", id: false, force: :cascade do |t|
+    t.integer "user_group_id"
+    t.integer "user_id"
+    t.index ["user_group_id"], name: "index_user_groups_users_on_user_group_id"
+    t.index ["user_id"], name: "index_user_groups_users_on_user_id"
+  end
+
   create_table "users", force: :cascade do |t|
   create_table "users", force: :cascade do |t|
     t.string   "provider",               default: "email", null: false
     t.string   "provider",               default: "email", null: false
     t.string   "uid",                    default: "",      null: false
     t.string   "uid",                    default: "",      null: false

spec/controllers/dbs_controller_spec.rb

@@ -2,13 +2,106 @@
 
 
 require 'rails_helper'
 require 'rails_helper'
 
 
-RSpec.describe DbsController, type: :controller do
+RSpec.describe DbsController, type: :request do
+  let(:john) { create(:user, first_name: 'John') }
+  let(:steve) { create(:user, first_name: 'Steve') }
+  let(:john_nilm) { create(:nilm, name: "John's NILM", admins: [john]) }
+  let(:lab_nilm) { create(:nilm, name: 'Lab NILM', owners: [john]) }
+  let(:pete_nilm) { create(:nilm, name: "Pete's NILM", viewers: [john])}
+  let(:hidden_nilm) { create(:nilm, name: "Private NILM", owners: [steve])}
+
+  # index action does not exist
+
   describe 'GET show' do
   describe 'GET show' do
-    it 'lists the database contents' do
-      allow(Db).to receive(:find).and_return(Db.new)
-      get :show, params: { id: 1}
-      expect(Db).to have_received(:find)
+    before do
+      john.confirm
+      steve.confirm
+    end
+    context 'with any permissions' do
+      it 'returns the db as json' do
+        # john has some permission on all 3 nilms
+        @auth_headers = john.create_new_auth_token
+        [pete_nilm.db, lab_nilm.db, john_nilm.db].each do |db|
+          get "/dbs/#{db.id}.json",
+              headers: @auth_headers
+          expect(response.status).to eq(200)
           expect(response.header['Content-Type']).to include('application/json')
           expect(response.header['Content-Type']).to include('application/json')
+          body = JSON.parse(response.body)
+          expect(body['url']).to eq(db.url)
+        end
+      end
+    end
+    context 'without permissions' do
+      it 'returns unauthorized' do
+        # steve does NOT have permissions on john_nilm
+        @auth_headers = steve.create_new_auth_token
+        get "/dbs/#{john_nilm.db.id}.json",
+            headers: @auth_headers
+        expect(response.status).to eq(401)
+      end
+    end
+    context 'without sign-in' do
+      it 'returns unauthorized' do
+        #  no headers: nobody is signed in, deny all
+        get "/dbs/#{john_nilm.db.id}.json"
+        expect(response.status).to eq(401)
+      end
+    end
+  end
+
+
+  describe 'PUT update' do
+    before do
+      john.confirm
+      steve.confirm
+    end
+    context 'with owner permissions' do
+      it 'refreshes db if URL is changed or refresh paramter is set' do
+
+      end
+      it 'returns 422 on invalid parameters' do
+        # max points must be a positive number
+        @auth_headers = john.create_new_auth_token
+        put "/dbs/#{john_nilm.db.id}.json",
+            params: {max_points_per_plot: 'invalid'},
+            headers: @auth_headers
+        expect(response.status).to eq(422)
+        expect(response).to have_error_message(/not a number/)
+      end
+
+      it 'only allows configurable parameters to be changed' do
+        # should ignore size and accept max_points
+        @auth_headers = john.create_new_auth_token
+        size = john_nilm.db.size_db
+        num_points = pete_nilm.db.max_points_per_plot
+        put "/dbs/#{john_nilm.db.id}.json",
+            params: {max_points_per_plot: num_points+10, size_db: size+10},
+            headers: @auth_headers
+        expect(response.status).to eq(200)
+        expect(response).to have_notice_message()
+        expect(john_nilm.db.reload.size_db).to eq(size)
+        expect(john_nilm.db.max_points_per_plot).to eq(num_points+10)
+      end
+    end
+    context 'without admin permissions' do
+      it 'returns unauthorized' do
+        @auth_headers = john.create_new_auth_token
+        num_points = pete_nilm.db.max_points_per_plot
+        put "/dbs/#{pete_nilm.db.id}.json",
+            params: {max_points_per_plot: num_points+10},
+            headers: @auth_headers
+        expect(response).to have_http_status(:unauthorized)
+        expect(pete_nilm.db.max_points_per_plot).to eq(num_points)
+      end
+    end
+    context 'without sign-in' do
+      it 'returns unauthorized' do
+        num_points = pete_nilm.db.max_points_per_plot
+        put "/dbs/#{pete_nilm.db.id}.json",
+            params: {max_points_per_plot: num_points+10}
+        expect(response).to have_http_status(:unauthorized)
+        expect(pete_nilm.db.max_points_per_plot).to eq(num_points)
+      end
     end
     end
   end
   end
 end
 end

spec/controllers/nilms_controller_spec.rb

@@ -2,5 +2,121 @@
 
 
 require 'rails_helper'
 require 'rails_helper'
 
 
-RSpec.describe NilmsController, type: :controller do
+RSpec.describe NilmsController, type: :request do
+  let(:john) { create(:user, first_name: 'John') }
+  let(:steve) { create(:user, first_name: 'Steve') }
+  let(:john_nilm) { create(:nilm, name: "John's NILM", admins: [john]) }
+  let(:lab_nilm) { create(:nilm, name: 'Lab NILM', owners: [john]) }
+  let(:pete_nilm) { create(:nilm, name: "Pete's NILM", viewers: [john])}
+  let(:hidden_nilm) { create(:nilm, name: "Private NILM", owners: [steve])}
+
+  describe 'GET index' do
+    before do
+      john.confirm
+      steve.confirm
+    end
+    context 'with authenticated user' do
+      it 'returns authorized nilms' do
+        # force lazy evaluation of let to build NILMs
+        john_nilm; pete_nilm; lab_nilm; hidden_nilm
+        @auth_headers = john.create_new_auth_token
+        get "/nilms.json", headers: @auth_headers
+        expect(response.header['Content-Type']).to include('application/json')
+        body = JSON.parse(response.body)
+        expect(body["admin"][0]["id"]).to eq(john_nilm.id)
+        expect(body["owner"][0]["id"]).to eq(lab_nilm.id)
+        expect(body["viewer"][0]["id"]).to eq(pete_nilm.id)
+      end
+    end
+    context 'without sign-in' do
+      it 'returns unauthorized' do
+        get "/nilms.json"
+        expect(response.status).to eq(401)
+      end
+    end
+  end
+
+
+  describe 'PUT update' do
+    before do
+      john.confirm
+      steve.confirm
+    end
+    context 'with owner permissions' do
+      it 'updates parameters' do
+        @auth_headers = john.create_new_auth_token
+        [john_nilm, lab_nilm].each do |nilm|
+          put "/nilms/#{nilm.id}.json",
+              params: {id: nilm.id, name: "changed:#{nilm.id}"},
+              headers: @auth_headers
+          expect(response.status).to eq(200)
+          expect(response).to have_notice_message
+          expect(nilm.reload.name).to eq("changed:#{nilm.id}")
+        end
+      end
+      it 'returns 422 on invalid parameters' do
+        @auth_headers = john.create_new_auth_token
+        put "/nilms/#{john_nilm.id}.json",
+            params: {id: john_nilm.id, name: ""},
+            headers: @auth_headers
+        expect(response).to have_http_status(:unprocessable_entity)
+        expect(john_nilm.reload.name).to eq("John's NILM")
+      end
+    end
+    context 'without admin permissions' do
+      it 'returns unauthorized' do
+        @auth_headers = john.create_new_auth_token
+        put "/nilms/#{pete_nilm.id}.json",
+            params: {id: pete_nilm.id, name: "test"},
+            headers: @auth_headers
+        expect(response).to have_http_status(:unauthorized)
+        expect(pete_nilm.reload.name).to eq("Pete's NILM")
+      end
+    end
+    context 'without sign-in' do
+      it 'returns unauthorized' do
+        put "/nilms/#{pete_nilm.id}.json",
+            params: {id: pete_nilm.id, name: "test"}
+        expect(response).to have_http_status(:unauthorized)
+        expect(pete_nilm.reload.name).to eq("Pete's NILM")
+      end
+    end
+  end
+
+  describe 'GET show' do
+    before do
+      john.confirm
+      steve.confirm
+    end
+    context 'with any permissions' do
+      it 'returns the nilm as json' do
+        # john has some permission on all 3 nilms
+        @auth_headers = john.create_new_auth_token
+        [pete_nilm, lab_nilm, john_nilm].each do |nilm|
+          get "/nilms/#{nilm.id}.json",
+              headers: @auth_headers
+          expect(response.status).to eq(200)
+          expect(response.header['Content-Type']).to include('application/json')
+          body = JSON.parse(response.body)
+          expect(body['name']).to eq(nilm.name)
+        end
+      end
+    end
+    context 'without permissions' do
+      it 'returns unauthorized' do
+        # steve does NOT have permissions on john_nilm
+        @auth_headers = steve.create_new_auth_token
+        get "/nilms/#{john_nilm.id}.json",
+            headers: @auth_headers
+        expect(response.status).to eq(401)
+      end
+    end
+    context 'without sign-in' do
+      it 'returns unauthorized' do
+        #  no headers: nobody is signed in, deny all
+        get "/nilms/#{john_nilm.id}.json"
+        expect(response.status).to eq(401)
+      end
+    end
+  end
 end
 end

spec/controllers/permissions_controller_spec.rb

+require 'rails_helper'
+
+# This spec was generated by rspec-rails when you ran the scaffold generator.
+# It demonstrates how one might use RSpec to specify the controller code that
+# was generated by Rails when you ran the scaffold generator.
+#
+# It assumes that the implementation code is generated by the rails scaffold
+# generator.  If you are using any extension libraries to generate different
+# controller code, this generated spec may or may not pass.
+#
+# It only uses APIs available in rails and/or rspec-rails.  There are a number
+# of tools you can use to make these specs even more expressive, but we're
+# sticking to rails and rspec-rails APIs to keep things simple and stable.
+#
+# Compared to earlier versions of this generator, there is very limited use of
+# stubs and message expectations in this spec.  Stubs are only used when there
+# is no simpler way to get a handle on the object needed for the example.
+# Message expectations are only used when there is no simpler way to specify
+# that an instance is receiving a specific message.
+
+RSpec.describe PermissionsController, type: :controller, broken: true do
+
+  # This should return the minimal set of attributes required to create a valid
+  # Permission. As you add validations to Permission, be sure to
+  # adjust the attributes here as well.
+  let(:valid_attributes) {
+    skip("Add a hash of attributes valid for your model")
+  }
+
+  let(:invalid_attributes) {
+    skip("Add a hash of attributes invalid for your model")
+  }
+
+  # This should return the minimal set of values that should be in the session
+  # in order to pass any filters (e.g. authentication) defined in
+  # PermissionsController. Be sure to keep this updated too.
+  let(:valid_session) { {} }
+
+  describe "GET #index" do
+    it "assigns all permissions as @permissions" do
+      permission = Permission.create! valid_attributes
+      get :index, params: {}, session: valid_session
+      expect(assigns(:permissions)).to eq([permission])
+    end
+  end
+
+  describe "GET #show" do
+    it "assigns the requested permission as @permission" do
+      permission = Permission.create! valid_attributes
+      get :show, params: {id: permission.to_param}, session: valid_session
+      expect(assigns(:permission)).to eq(permission)
+    end
+  end
+
+  describe "GET #new" do
+    it "assigns a new permission as @permission" do
+      get :new, params: {}, session: valid_session
+      expect(assigns(:permission)).to be_a_new(Permission)
+    end
+  end
+
+  describe "GET #edit" do
+    it "assigns the requested permission as @permission" do
+      permission = Permission.create! valid_attributes
+      get :edit, params: {id: permission.to_param}, session: valid_session
+      expect(assigns(:permission)).to eq(permission)
+    end
+  end
+
+  describe "POST #create" do
+    context "with valid params" do
+      it "creates a new Permission" do
+        expect {
+          post :create, params: {permission: valid_attributes}, session: valid_session
+        }.to change(Permission, :count).by(1)
+      end
+
+      it "assigns a newly created permission as @permission" do
+        post :create, params: {permission: valid_attributes}, session: valid_session
+        expect(assigns(:permission)).to be_a(Permission)
+        expect(assigns(:permission)).to be_persisted
+      end
+
+      it "redirects to the created permission" do
+        post :create, params: {permission: valid_attributes}, session: valid_session
+        expect(response).to redirect_to(Permission.last)
+      end
+    end
+
+    context "with invalid params" do
+      it "assigns a newly created but unsaved permission as @permission" do
+        post :create, params: {permission: invalid_attributes}, session: valid_session
+        expect(assigns(:permission)).to be_a_new(Permission)
+      end
+
+      it "re-renders the 'new' template" do
+        post :create, params: {permission: invalid_attributes}, session: valid_session
+        expect(response).to render_template("new")
+      end
+    end
+  end
+
+  describe "PUT #update" do
+    context "with valid params" do
+      let(:new_attributes) {
+        skip("Add a hash of attributes valid for your model")
+      }
+
+      it "updates the requested permission" do
+        permission = Permission.create! valid_attributes
+        put :update, params: {id: permission.to_param, permission: new_attributes}, session: valid_session
+        permission.reload
+        skip("Add assertions for updated state")
+      end
+
+      it "assigns the requested permission as @permission" do
+        permission = Permission.create! valid_attributes
+        put :update, params: {id: permission.to_param, permission: valid_attributes}, session: valid_session
+        expect(assigns(:permission)).to eq(permission)
+      end
+
+      it "redirects to the permission" do
+        permission = Permission.create! valid_attributes
+        put :update, params: {id: permission.to_param, permission: valid_attributes}, session: valid_session
+        expect(response).to redirect_to(permission)
+      end
+    end
+
+    context "with invalid params" do
+      it "assigns the permission as @permission" do
+        permission = Permission.create! valid_attributes
+        put :update, params: {id: permission.to_param, permission: invalid_attributes}, session: valid_session
+        expect(assigns(:permission)).to eq(permission)
+      end
+
+      it "re-renders the 'edit' template" do
+        permission = Permission.create! valid_attributes
+        put :update, params: {id: permission.to_param, permission: invalid_attributes}, session: valid_session
+        expect(response).to render_template("edit")
+      end
+    end
+  end
+
+  describe "DELETE #destroy" do
+    it "destroys the requested permission" do
+      permission = Permission.create! valid_attributes
+      expect {
+        delete :destroy, params: {id: permission.to_param}, session: valid_session
+      }.to change(Permission, :count).by(-1)
+    end
+
+    it "redirects to the permissions list" do
+      permission = Permission.create! valid_attributes
+      delete :destroy, params: {id: permission.to_param}, session: valid_session
+      expect(response).to redirect_to(permissions_url)
+    end
+  end
+
+end

spec/controllers/user_groups_controller_spec.rb

+require 'rails_helper'
+
+# This spec was generated by rspec-rails when you ran the scaffold generator.
+# It demonstrates how one might use RSpec to specify the controller code that
+# was generated by Rails when you ran the scaffold generator.
+#
+# It assumes that the implementation code is generated by the rails scaffold
+# generator.  If you are using any extension libraries to generate different
+# controller code, this generated spec may or may not pass.
+#
+# It only uses APIs available in rails and/or rspec-rails.  There are a number
+# of tools you can use to make these specs even more expressive, but we're
+# sticking to rails and rspec-rails APIs to keep things simple and stable.
+#
+# Compared to earlier versions of this generator, there is very limited use of
+# stubs and message expectations in this spec.  Stubs are only used when there
+# is no simpler way to get a handle on the object needed for the example.
+# Message expectations are only used when there is no simpler way to specify
+# that an instance is receiving a specific message.
+
+RSpec.describe UserGroupsController, type: :controller, broken: true do
+
+  # This should return the minimal set of attributes required to create a valid
+  # UserGroup. As you add validations to UserGroup, be sure to
+  # adjust the attributes here as well.
+  let(:valid_attributes) {
+    skip("Add a hash of attributes valid for your model")
+  }
+
+  let(:invalid_attributes) {
+    skip("Add a hash of attributes invalid for your model")
+  }
+
+  # This should return the minimal set of values that should be in the session
+  # in order to pass any filters (e.g. authentication) defined in
+  # UserGroupsController. Be sure to keep this updated too.
+  let(:valid_session) { {} }
+
+  describe "GET #index" do
+    it "assigns all user_groups as @user_groups" do
+      user_group = UserGroup.create! valid_attributes
+      get :index, params: {}, session: valid_session
+      expect(assigns(:user_groups)).to eq([user_group])
+    end
+  end
+
+  describe "GET #show" do
+    it "assigns the requested user_group as @user_group" do
+      user_group = UserGroup.create! valid_attributes
+      get :show, params: {id: user_group.to_param}, session: valid_session
+      expect(assigns(:user_group)).to eq(user_group)
+    end
+  end
+
+  describe "GET #new" do
+    it "assigns a new user_group as @user_group" do
+      get :new, params: {}, session: valid_session
+      expect(assigns(:user_group)).to be_a_new(UserGroup)
+    end
+  end
+
+  describe "GET #edit" do
+    it "assigns the requested user_group as @user_group" do
+      user_group = UserGroup.create! valid_attributes
+      get :edit, params: {id: user_group.to_param}, session: valid_session
+      expect(assigns(:user_group)).to eq(user_group)
+    end
+  end
+
+  describe "POST #create" do
+    context "with valid params" do
+      it "creates a new UserGroup" do
+        expect {
+          post :create, params: {user_group: valid_attributes}, session: valid_session
+        }.to change(UserGroup, :count).by(1)
+      end
+
+      it "assigns a newly created user_group as @user_group" do
+        post :create, params: {user_group: valid_attributes}, session: valid_session
+        expect(assigns(:user_group)).to be_a(UserGroup)
+        expect(assigns(:user_group)).to be_persisted
+      end
+
+      it "redirects to the created user_group" do
+        post :create, params: {user_group: valid_attributes}, session: valid_session
+        expect(response).to redirect_to(UserGroup.last)
+      end
+    end
+
+    context "with invalid params" do
+      it "assigns a newly created but unsaved user_group as @user_group" do
+        post :create, params: {user_group: invalid_attributes}, session: valid_session
+        expect(assigns(:user_group)).to be_a_new(UserGroup)
+      end
+
+      it "re-renders the 'new' template" do
+        post :create, params: {user_group: invalid_attributes}, session: valid_session
+        expect(response).to render_template("new")
+      end
+    end
+  end
+
+  describe "PUT #update" do
+    context "with valid params" do
+      let(:new_attributes) {
+        skip("Add a hash of attributes valid for your model")
+      }
+
+      it "updates the requested user_group" do
+        user_group = UserGroup.create! valid_attributes
+        put :update, params: {id: user_group.to_param, user_group: new_attributes}, session: valid_session
+        user_group.reload
+        skip("Add assertions for updated state")
+      end
+
+      it "assigns the requested user_group as @user_group" do
+        user_group = UserGroup.create! valid_attributes
+        put :update, params: {id: user_group.to_param, user_group: valid_attributes}, session: valid_session
+        expect(assigns(:user_group)).to eq(user_group)
+      end
+
+      it "redirects to the user_group" do
+        user_group = UserGroup.create! valid_attributes
+        put :update, params: {id: user_group.to_param, user_group: valid_attributes}, session: valid_session
+        expect(response).to redirect_to(user_group)
+      end
+    end
+
+    context "with invalid params" do
+      it "assigns the user_group as @user_group" do
+        user_group = UserGroup.create! valid_attributes
+        put :update, params: {id: user_group.to_param, user_group: invalid_attributes}, session: valid_session
+        expect(assigns(:user_group)).to eq(user_group)
+      end
+
+      it "re-renders the 'edit' template" do
+        user_group = UserGroup.create! valid_attributes
+        put :update, params: {id: user_group.to_param, user_group: invalid_attributes}, session: valid_session
+        expect(response).to render_template("edit")
+      end
+    end
+  end
+
+  describe "DELETE #destroy" do
+    it "destroys the requested user_group" do
+      user_group = UserGroup.create! valid_attributes
+      expect {
+        delete :destroy, params: {id: user_group.to_param}, session: valid_session
+      }.to change(UserGroup, :count).by(-1)
+    end
+
+    it "redirects to the user_groups list" do
+      user_group = UserGroup.create! valid_attributes
+      delete :destroy, params: {id: user_group.to_param}, session: valid_session
+      expect(response).to redirect_to(user_groups_url)
+    end
+  end
+
+end

spec/factories/db_folder.rb

@@ -2,7 +2,7 @@
 
 
 # generic DbFolder
 # generic DbFolder
 FactoryGirl.define do
 FactoryGirl.define do
-  factory :db_folder do
+  factory :db_folder, aliases: [:root_folder] do
     name { Faker::Lorem.word }
     name { Faker::Lorem.word }
   end
   end
 end
 end

spec/factories/dbs.rb

@@ -2,5 +2,12 @@
 
 
 FactoryGirl.define do
 FactoryGirl.define do
   factory :db do
   factory :db do
+    url ""
+    max_points_per_plot { Faker::Number.number(3) }
+    size_db { Faker::Number.number(5) }
+    size_other { Faker::Number.number(5) }
+    size_total { size_db + size_other }
+    available true
+    root_folder
   end
   end
 end
 end

spec/factories/nilms.rb

 # frozen_string_literal: true
 # frozen_string_literal: true
-
 FactoryGirl.define do
 FactoryGirl.define do
+
+
+
   factory :nilm do
   factory :nilm do
+    db
+    name "test_nilm"
+    description { Faker::Lorem.sentence }
+    transient do
+      admins []
+      owners []
+      viewers []
+    end
+
+    after(:create) do |nilm, evaluator|
+      evaluator.admins.each do |admin|
+        if admin.instance_of? User
+          create(:permission, user: admin, user_group: nil, nilm: nilm, role: "admin")
+        else
+          create(:permission, user_group: admin, user: nil, nilm: nilm, role: "admin")
+        end
+      end
+      evaluator.owners.each do |owner|
+        if owner.instance_of? User
+          create(:permission, user: owner, user_group: nil, nilm: nilm, role: "owner")
+        else
+          create(:permission, user_group: owner, user: nil, nilm: nilm, role: "owner")
+        end
+      end
+      evaluator.viewers.each do |viewer|
+        if viewer.instance_of? User
+          create(:permission, user: viewer, user_group: nil, nilm: nilm, role: "viewer")
+        else
+          create(:permission, user_group: viewer, user: nil, nilm: nilm, role: "viewer")
+        end
+      end
+    end
   end
   end
 end
 end

spec/factories/permissions.rb

+FactoryGirl.define do
+  factory :permission do
+    user
+    nilm
+  end
+end

spec/factories/user_groups.rb

+FactoryGirl.define do
+  factory :user_group do
+    transient do
+      members []
+    end
+
+    sequence :name do |n| "group#{n}" end
+    description { Faker::Lorem.sentence }
+    owner       { users.first }
+    users       { members.empty? ? [User.first] : members }
+  end
+end

spec/factories/users.rb

+FactoryGirl.define do
+  factory :user do
+    first_name {Faker::Name.first_name}
+    last_name {Faker::Name.first_name}
+    email {Faker::Internet.unique.email}
+    password {Faker::Lorem.characters(10)}
+  end
+end

spec/models/permission_spec.rb

+require 'rails_helper'
+
+RSpec.describe Permission, type: :model do
+  pending "add some examples to (or delete) #{__FILE__}"
+end

spec/models/user_group_spec.rb

+require 'rails_helper'
+
+RSpec.describe UserGroup, type: :model do
+  describe "UserGroup Behavior" do
+    context "Given a group with four members" do
+      before(:each) do
+        #users
+        @john = create(:user, first_name: "John")
+        @nicky = create(:user, first_name: "Nicky")
+        @pete = create(:user, first_name: "Pete")
+        @leeb = create(:user, first_name: "Leeb")
+        #groups
+        @group = create(:user_group, name: "Group", owner: @john,
+                        members: [@john, @nicky, @pete, @leeb])
+      end
+      it "has an owner and four members" do
+        expect(@group.users.count).to eq(4)
+        expect(@group.owner).to eq(@john)
+        expect(@group.users).to eq([@john,@nicky,@pete,@leeb])
+      end
+    end
+  end
+end

spec/models/user_spec.rb

+# frozen_string_literal: true
+require 'rails_helper'
+
+RSpec.describe User, type: :model do
+  describe 'user' do
+    let(:user) { User.new }
+    specify { expect(user).to respond_to(:first_name) }
+    specify { expect(user).to respond_to(:last_name) }
+    specify { expect(user).to respond_to(:email) }
+  end
+
+  describe "permission management" do
+    context "Given the Donnal's House and the Lab" do
+      before(:each) do
+        #users
+        @john = create(:user, first_name: "John")
+        @nicky = create(:user, first_name: "Nicky")
+        @pete = create(:user, first_name: "Pete")
+        @leeb = create(:user, first_name: "Leeb")
+        #groups
+        @donnals = create(:user_group, name: "Donnals", members: [@john, @nicky])
+        @labmates = create(:user_group, name: "Labmates", members: [@john, @pete, @leeb])
+        @public = create(:user_group, members:[@john, @nicky, @pete, @leeb])
+        #nilms
+        @donnal_house = create(:nilm, name: "Donnal House",
+                               admins: [@john], owners: [@donnals])
+        @lab = create(:nilm, name: "LEES Lab", admins: [@john, @leeb],
+                      owners: [@labmates], viewers: [@public])
+      end
+      it "lets John admin his house and the lab" do
+        expect(@john.admins_nilm?(@donnal_house)).to eq(true)
+        expect(@john.owns_nilm?(@donnal_house)).to eq(true)
+        expect(@john.views_nilm?(@donnal_house)).to eq(true)
+        expect(@john.admins_nilm?(@lab)).to eq(true)
+        expect(@john.owns_nilm?(@lab)).to eq(true)
+        expect(@john.views_nilm?(@lab)).to eq(true)
+      end
+      it "lets Nicky own her house and view the lab" do
+        expect(@nicky.admins_nilm?(@donnal_house)).to eq(false)
+        expect(@nicky.owns_nilm?(@donnal_house)).to eq(true)
+        expect(@nicky.views_nilm?(@donnal_house)).to eq(true)
+        expect(@nicky.admins_nilm?(@lab)).to eq(false)
+        expect(@nicky.owns_nilm?(@lab)).to eq(false)
+        expect(@nicky.views_nilm?(@lab)).to eq(true)
+      end
+      it "lets Pete own the lab but hides the Donnal's house" do
+        expect(@pete.admins_nilm?(@donnal_house)).to eq(false)
+        expect(@pete.owns_nilm?(@donnal_house)).to eq(false)
+        expect(@pete.views_nilm?(@donnal_house)).to eq(false)
+        expect(@pete.admins_nilm?(@lab)).to eq(false)
+        expect(@pete.owns_nilm?(@lab)).to eq(true)
+        expect(@pete.views_nilm?(@lab)).to eq(true)
+      end
+      it "lets Leeb admin the lab but hides the Donnal's house" do
+        expect(@leeb.admins_nilm?(@donnal_house)).to eq(false)
+        expect(@leeb.owns_nilm?(@donnal_house)).to eq(false)
+        expect(@leeb.views_nilm?(@donnal_house)).to eq(false)
+        expect(@leeb.admins_nilm?(@lab)).to eq(true)
+        expect(@leeb.owns_nilm?(@lab)).to eq(true)
+        expect(@leeb.views_nilm?(@lab)).to eq(true)
+      end
+    end
+  end
+end

spec/rails_helper.rb

+# frozen_string_literal: true
 # This file is copied to spec/ when you run 'rails generate rspec:install'
 # This file is copied to spec/ when you run 'rails generate rspec:install'
 ENV['RAILS_ENV'] ||= 'test'
 ENV['RAILS_ENV'] ||= 'test'
 require File.expand_path('../../config/environment', __FILE__)
 require File.expand_path('../../config/environment', __FILE__)
 # Prevent database truncation if the environment is production
 # Prevent database truncation if the environment is production
-abort("The Rails environment is running in production mode!") if Rails.env.production?
+abort('The Rails environment is running in production mode!') if Rails.env.production?
 require 'spec_helper'
 require 'spec_helper'
 require 'rspec/rails'
 require 'rspec/rails'
+require 'support/factory_girl'
+require 'support/api_messages'
+
 # Add additional requires below this line. Rails is not loaded until this point!
 # Add additional requires below this line. Rails is not loaded until this point!
 
 
 # Requires supporting ruby files with custom matchers and macros, etc, in
 # Requires supporting ruby files with custom matchers and macros, etc, in
@@ -27,6 +31,9 @@ require 'rspec/rails'
 ActiveRecord::Migration.maintain_test_schema!
 ActiveRecord::Migration.maintain_test_schema!
 
 
 RSpec.configure do |config|
 RSpec.configure do |config|
+  config.include Devise::Test::ControllerHelpers, type: :controller
+  config.include Devise::Test::ControllerHelpers, type: :view
+
   # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
   # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
   config.fixture_path = "#{::Rails.root}/spec/fixtures"
   config.fixture_path = "#{::Rails.root}/spec/fixtures"
 
 
@@ -61,4 +68,3 @@ VCR.configure do |c|
   c.hook_into :webmock
   c.hook_into :webmock
   c.configure_rspec_metadata!
   c.configure_rspec_metadata!
 end
 end
-

spec/requests/permissions_spec.rb

+require 'rails_helper'
+
+RSpec.describe "Permissions", type: :request do
+  describe "GET /permissions" do
+    it "works! (now write some real specs)" do
+      get permissions_path
+      expect(response).to have_http_status(200)
+    end
+  end
+end

spec/requests/user_groups_spec.rb

+require 'rails_helper'
+
+RSpec.describe "UserGroups", type: :request do
+  describe "GET /user_groups" do
+    it "works! (now write some real specs)" do
+      get user_groups_path
+      expect(response).to have_http_status(200)
+    end
+  end
+end

spec/spec_helper.rb

@@ -23,6 +23,9 @@ SimpleCov.start
 require 'webmock/rspec'
 require 'webmock/rspec'
 
 
 RSpec.configure do |config|
 RSpec.configure do |config|
+
+  config.filter_run_excluding :broken => true
+
   # rspec-expectations config goes here. You can use an alternate
   # rspec-expectations config goes here. You can use an alternate
   # assertion/expectation library such as wrong or the stdlib/minitest
   # assertion/expectation library such as wrong or the stdlib/minitest
   # assertions if you prefer.
   # assertions if you prefer.

spec/support/api_messages.rb

+RSpec::Matchers.define :have_error_message do |regex|
+  match do |response|
+    body = JSON.parse(response.body)
+    # omit regex to test if there are any error messages
+    if(regex == nil)
+      return false if body["messages"]["errors"].empty?
+      return true
+    end
+    # specify regex to match a particular error message
+    body["messages"]["errors"].each do |error|
+      return true if(regex.match(error))
+    end
+    return false
+  end
+
+  failure_message do |str|
+    body = JSON.parse(response.body)
+    "Expected #{regex} to match in [ " +
+      body["messages"]["errors"].join(", ")+" ]"
+  end
+
+  failure_message_when_negated do |str|
+    body = JSON.parse(response.body)
+    "Expected #{regex} to not match in:\n" +
+      body["messages"]["errors"].join(", ")
+  end
+end
+
+RSpec::Matchers.define :have_notice_message do |regex|
+  match do |response|
+    body = JSON.parse(response.body)
+    # omit regex to test if there are any notice messages
+    if(regex == nil)
+      return false if body["messages"]["notices"].empty?
+      return true
+    end
+    # specify regex to match a particular notice message
+    body["messages"]["notices"].each do |notice|
+      return true if(regex.match(notice))
+    end
+    return false
+  end
+
+  failure_message do |str|
+    body = JSON.parse(response.body)
+    "Expected #{regex} to match in [ " +
+      body["messages"]["notices"].join(", ")+" ]"
+  end
+
+  failure_message_when_negated do |str|
+    body = JSON.parse(response.body)
+    "Expected #{regex} to not match in:\n" +
+      body["messages"]["notices"].join(", ")
+  end
+end