Rails - Implementing Invitation Code mechanism

Rails_Implementing_Invitation_Code_mechanism.diff

commit a656816e7d9498d32b52c6c9455e535466623ad9
Author: Fernando
Date:   Fri Oct 1 12:23:37 2021 +0200

    Invitation workflow

diff --git a/app/controllers/admin/invitations_controller.rb b/app/controllers/admin/invitations_controller.rb
new file mode 100644
index 0000000..93652c0
--- /dev/null
+++ b/app/controllers/admin/invitations_controller.rb
@@ -0,0 +1,53 @@
+class Admin::InvitationsController < Admin::BaseController
+  before_action :require_admin_user
+  before_action :load_invitation, only: [:show, :edit, :update, :destroy]
+
+  def index
+    @invitations = Invitation.order_by_recent
+  end
+
+  def show; end
+
+  def new
+    @invitation = Invitation.new
+  end
+
+  def create
+    @invitation = Invitation.new(invitation_params)
+
+    if @invitation.save
+      redirect_to [:admin, @invitation], notice: t("controllers.invitations.create.success")
+    else
+      flash.now[:alert] = t("controllers.invitations.create.error")
+      render action: :new
+    end
+  end
+
+  def edit; end
+
+  def update
+    if @invitation.update(invitation_params)
+      redirect_to [:admin, @invitation], notice: t("controllers.invitations.update.success")
+    else
+      flash.now[:alert] = t("controllers.invitations.update.error")
+      render action: :edit
+    end
+  end
+
+  def destroy
+    @invitation.destroy
+    redirect_to :admin_invitations, notice: t("controllers.invitations.destroy.success")
+  end
+
+  protected
+
+  def invitation_params
+    params.require(:invitation).permit(:name)
+  end
+
+  private
+
+  def load_invitation
+    @invitation = Invitation.find(params[:id])
+  end
+end
diff --git a/app/controllers/front/front_users_controller.rb b/app/controllers/front/front_users_controller.rb
index 4bd3ad3..dce2e37 100644
--- a/app/controllers/front/front_users_controller.rb
+++ b/app/controllers/front/front_users_controller.rb
@@ -6,11 +6,13 @@ class Front::FrontUsersController < Front::BaseController
   def show; end

   def new
-    @front_user = FrontUser.new
+    @front_user = FrontUser.new(invitation_id: params[:invitation_id])
   end

   def create
     @front_user = FrontUser.new(front_user_params)
+    @front_user.require_invitation = true
+
     if @front_user.save
       redirect_to [:front, @front_user], notice: t("controllers.front_users.create.success")
     else
@@ -57,7 +59,7 @@ class Front::FrontUsersController < Front::BaseController
   protected

   def front_user_params
-    params.require(:front_user).permit(:name, :email, :password, :password_confirmation)
+    params.require(:front_user).permit(:name, :email, :password, :password_confirmation, :invitation_id)
   end

   private
diff --git a/app/models/front_user.rb b/app/models/front_user.rb
index 8013b2c..86792f8 100644
--- a/app/models/front_user.rb
+++ b/app/models/front_user.rb
@@ -2,6 +2,8 @@ class FrontUser < ApplicationRecord
   self.primary_key = :uuid
   include HasUuid

+  attr_accessor :require_invitation
+
   acts_as_authentic do |config|
     config.crypto_provider = ::Authlogic::CryptoProviders::SCrypt
     config.session_class = FrontSession
@@ -10,13 +12,16 @@ class FrontUser < ApplicationRecord
   has_many :authorizations, class_name: "FrontAuthorization", dependent: :destroy
   has_many :posts, dependent: :destroy
   has_many :play_gatherings, dependent: :destroy
+  has_one :invitation, dependent: :nullify

   validates :name, presence: true
   validates :email, presence: true, uniqueness: { case_sensitive: false }, format: { with: RubyRegex::Email }
   validates :password, presence: true, on: :create
   validates :password, confirmation: true, allow_blank: true
-
   validates_with PasswordValidator, unless: -> { password.blank? }
+  validate :invitation_available, on: :create, if: :require_invitation?
+
+  after_commit :use_invitation, on: :create

   scope :order_by_recent, -> { order("created_at desc") }

@@ -24,4 +29,27 @@ class FrontUser < ApplicationRecord
     reset_perishable_token!
     Notifier.front_user_reset_password(self).deliver
   end
+
+  def require_invitation?
+    require_invitation
+  end
+
+  def invitation_id
+    self.invitation&.uuid
+  end
+
+  def invitation_id=(id)
+    self.invitation = Invitation.find_by(uuid: id)
+  end
+
+  def invitation_available
+    if invitation.nil? || invitation.used?
+      errors.add(:invitation, "Invitation Code is not found or is already used")
+    end
+  end
+
+  def use_invitation
+   return if invitation.nil?
+   invitation.use!(self)
+  end
 end
diff --git a/app/models/invitation.rb b/app/models/invitation.rb
new file mode 100644
index 0000000..dd9ed43
--- /dev/null
+++ b/app/models/invitation.rb
@@ -0,0 +1,22 @@
+class Invitation < ApplicationRecord
+  self.primary_key = :uuid
+  include HasUuid
+
+  belongs_to :front_user, optional: true
+
+  validates :name, presence: true
+
+  scope :order_by_recent, -> { order("created_at desc") }
+  scope :available, -> { where(used_at: nil) }
+
+  def used?
+    used_at != nil
+  end
+
+  def use!(front_user)
+    update!(
+      used_at: Time.now,
+      front_user: front_user
+    )
+  end
+end
diff --git a/app/views/admin/invitations/_form.html.erb b/app/views/admin/invitations/_form.html.erb
new file mode 100644
index 0000000..5cc34d6
--- /dev/null
+++ b/app/views/admin/invitations/_form.html.erb
@@ -0,0 +1,22 @@
+<%= form_for [:admin, @invitation] do |f| %>
+  <%= render "/shared/form_errors", :object => f.object %>
+
+  <fieldset>
+    <legend><%= "Invitation attributes" %></legend>
+    <hr>
+
+    <div class="form-group row">
+      <%= f.label :name, class: "col-sm-2 col-form-label text-right"%>
+
+      <div class="col-sm-10">
+        <%= f.text_field :name, class: "form-control", placeholder: t("activerecord.attributes.invitation.name") %>
+      </div>
+    </div>
+
+    <div class="form-group row">
+      <div class="offset-sm-2 col-sm-10">
+        <%= f.submit class: "btn btn-primary" %>
+      </div>
+    </div>
+  </fieldset>
+<% end %>
diff --git a/app/views/admin/invitations/_list.html.erb b/app/views/admin/invitations/_list.html.erb
new file mode 100644
index 0000000..814fb22
--- /dev/null
+++ b/app/views/admin/invitations/_list.html.erb
@@ -0,0 +1,19 @@
+<table class="table table-striped table-hover">
+  <tr>
+    <th><%= t "activerecord.attributes.invitation.uuid" %></th>
+    <th><%= t "activerecord.attributes.invitation.name" %></th>
+    <th><%= t "activerecord.attributes.invitation.created_at" %></th>
+    <th><%= t "activerecord.attributes.invitation.used_at" %></th>
+    <th><%= t "activerecord.attributes.invitation.front_user.name" %></th>
+  </tr>
+
+  <% invitations.each do |invitation| %>
+    <tr>
+      <td><%= link_to invitation.uuid, [:admin, invitation] %></td>
+      <td><%= invitation.name %></td>
+      <td><%= invitation.created_at.to_s(:datetimedb) %></td>
+      <td><%= invitation.used_at ? invitation.used_at.to_s(:datetimedb) : "-" %></td>
+      <td><%= invitation.front_user ? link_to(invitation.front_user.name, [:admin, invitation.front_user]) : "-" %></td>
+    </tr>
+  <% end %>
+</table>
diff --git a/app/views/admin/invitations/edit.html.erb b/app/views/admin/invitations/edit.html.erb
new file mode 100644
index 0000000..6c77233
--- /dev/null
+++ b/app/views/admin/invitations/edit.html.erb
@@ -0,0 +1,13 @@
+<% title t("views.invitations.edit.title", :invitation_uuid => @invitation.uuid) %>
+
+<ol class="breadcrumb">
+  <li class="breadcrumb-item"><%= link_to t("layouts.breadcrumbs.invitations"), :admin_invitations %></li>
+  <li class="breadcrumb-item"><%= link_to @invitation.uuid, [:admin, @invitation] %></li>
+  <li class="breadcrumb-item active"><%= t "layouts.breadcrumbs.edit" %></li>
+</ol>
+
+<p class="lead">
+  <%= t "views.invitations.edit.text" %>
+</p>
+
+<%= render "form" %>
diff --git a/app/views/admin/invitations/index.html.erb b/app/views/admin/invitations/index.html.erb
new file mode 100644
index 0000000..2068f02
--- /dev/null
+++ b/app/views/admin/invitations/index.html.erb
@@ -0,0 +1,11 @@
+<% title t("views.invitations.index.title") %>
+
+<nav aria-label="breadcrumb">
+  <ol class="breadcrumb">
+    <li class="breadcrumb-item active"><%= t "layouts.breadcrumbs.invitations" %></li>
+  </ol>
+</nav>
+
+<p><%= link_to "New Invitation", new_admin_invitation_path, :class => "btn btn-outline-primary" %></p>
+
+<%= render partial: "list", locals: { invitations: @invitations } %>
diff --git a/app/views/admin/invitations/new.html.erb b/app/views/admin/invitations/new.html.erb
new file mode 100644
index 0000000..448dc0e
--- /dev/null
+++ b/app/views/admin/invitations/new.html.erb
@@ -0,0 +1,15 @@
+<% title t("views.invitations.new.title") %>
+
+<nav aria-label="breadcrumb">
+  <ol class="breadcrumb">
+    <li class="breadcrumb-item"><%= link_to t("layouts.breadcrumbs.invitations"), :admin_invitations %></li>
+    <li class="breadcrumb-item active"><%= t "layouts.breadcrumbs.new" %></li>
+  </ol>
+</nav>
+
+<p class="lead">
+  <%= t("views.invitations.new.text") %>
+</p>
+
+
+<%= render "form" %>
diff --git a/app/views/admin/invitations/show.html.erb b/app/views/admin/invitations/show.html.erb
new file mode 100644
index 0000000..2ea8de3
--- /dev/null
+++ b/app/views/admin/invitations/show.html.erb
@@ -0,0 +1,24 @@
+<% title t("views.invitations.show.title", :invitation_uuid => @invitation.uuid) %>
+
+<nav aria-label="breadcrumb">
+  <ol class="breadcrumb">
+    <li class="breadcrumb-item"><%= link_to t("layouts.breadcrumbs.invitations"), :admin_invitations %></li>
+    <li class="breadcrumb-item active"><%= @invitation.uuid %></li>
+  </ol>
+</nav>
+
+<dl class="row">
+  <dt class="col-sm-2 text-right"><%= t "activerecord.attributes.invitation.uuid" %></dt><dd class="col-sm-10"><%= @invitation.uuid %></dd>
+  <dt class="col-sm-2 text-right"><%= t "activerecord.attributes.invitation.name" %></dt><dd class="col-sm-10"><%= @invitation.name %></dd>
+  <dt class="col-sm-2 text-right"><%= t "activerecord.attributes.invitation.created_at" %></dt><dd class="col-sm-10"><%= @invitation.created_at.to_s(:datetimedb) %></dd>
+  <dt class="col-sm-2 text-right"><%= t "activerecord.attributes.invitation.used_at" %></dt><dd class="col-sm-10"><%= @invitation.used_at ? @invitation.used_at.to_s(:datetimedb) : "-" %></dd>
+  <dt class="col-sm-2 text-right"><%= t "activerecord.attributes.invitation.front_user.name" %></dt><dd class="col-sm-10"><%= @invitation.front_user ? link_to(@invitation.front_user.name, [:admin, @invitation.front_user]) : "-" %></dd>
+  <dt class="col-sm-2 text-right"><%= t "activerecord.attributes.invitation.link" %></dt><dd class="col-sm-10"><%= link_to new_front_front_user_url(invitation_id: @invitation), new_front_front_user_url(invitation_id: @invitation), target: "_blank" %></dd>
+</dl>
+
+<div class="controls text-right">
+  <p>
+    <%= link_to t("views.invitations.show.edit_button"), edit_admin_invitation_path(@invitation), :class => "btn btn-primary" %>
+    <%= link_to t("views.invitations.show.delete_button"), [:admin, @invitation], :data => { :confirm => t("views.invitations.show.delete_confirmation") }, :method => :delete, :class => "btn btn-danger" %>
+  </p>
+</div>
diff --git a/app/views/front/front_users/_form.html.erb b/app/views/front/front_users/_form.html.erb
index 8ded723..5ce08fd 100644
--- a/app/views/front/front_users/_form.html.erb
+++ b/app/views/front/front_users/_form.html.erb
@@ -4,6 +4,14 @@
     <legend><%= "FrontUser attributes" %></legend>
     <hr>

+    <div class="row mb-3">
+      <%= f.label :invitation_id, class: "col-sm-2 col-form-label text-end"%>
+      <div class="col-sm-10">
+        <%= f.text_field :invitation_id, class: "form-control", placeholder: t("activerecord.attributes.front_user.invitation_id") %>
+        <div class="form-text">Introduce the Invitation Code.</div>
+      </div>
+    </div>
+
     <div class="row mb-3">
       <%= f.label :name, class: "col-sm-2 col-form-label text-end"%>
       <div class="col-sm-10">
diff --git a/app/views/layouts/admin/_menu.html.erb b/app/views/layouts/admin/_menu.html.erb
index 261266d..4942387 100644
--- a/app/views/layouts/admin/_menu.html.erb
+++ b/app/views/layouts/admin/_menu.html.erb
@@ -8,6 +8,7 @@
     <li class="nav-item"><%= link_to t("layouts.menu.admin_users"), :admin_admin_users, class: "nav-link" %></li>
     <li class="nav-item"><%= link_to t("layouts.menu.front_users"), :admin_front_users, class: "nav-link" %></li>
     <li class="nav-item"><%= link_to t("layouts.menu.posts"), :admin_posts, class: "nav-link" %></li>
+    <li class="nav-item"><%= link_to t("layouts.menu.invitations"), :admin_invitations, class: "nav-link" %></li>

     <li class="nav-item dropdown">
       <a class="nav-link dropdown-toggle" data-bs-toggle="dropdown" href="#" role="button" aria-expanded="false"><%= current_admin_user.name %></a>
diff --git a/config/locales/custom/en.yml b/config/locales/custom/en.yml
index b9ac28e..0a70967 100644
--- a/config/locales/custom/en.yml
+++ b/config/locales/custom/en.yml
@@ -15,11 +15,20 @@ en:
       front_user:
         created_at: Created at
         email: Email
+        invitation_id: Invitation
         name: Name
         one: FrontUser
         password: Password
         password_confirmation: Password confirmation
         uuid: Uuid
+      invitation:
+        created_at: Created at
+        front_user:
+          name: Name
+        link: Link
+        name: Name
+        used_at: Used at
+        uuid: Uuid
       play_gathering:
         description: Description
         title: Title
@@ -85,6 +94,15 @@ en:
       update:
         error: Errors were encountered when trying to update Front User
         success: Successfully updated Front User
+    invitations:
+      create:
+        error: Error
+        success: Success
+      destroy:
+        success: Success
+      update:
+        error: Error
+        success: Success
     play_gatherings:
       create:
         error: Error
@@ -114,6 +132,7 @@ en:
       forgot_password: Forgotten Password
       front_sessions: Front sessions
       front_users: Front users
+      invitations: Invitations
       login_admin: Admin Login
       login_front: Login front
       new: New
@@ -127,6 +146,7 @@ en:
       features: Features
       front_users: Front users
       home: Home
+      invitations: Invitations
       login: Login
       logout: Logout
       my_posts: See my posts
@@ -191,6 +211,20 @@ en:
         delete_confirmation: Delete confirmation
         edit_button: Edit button
         title: Title
+    invitations:
+      edit:
+        text: Text
+        title: Title
+      index:
+        title: Title
+      new:
+        text: Text
+        title: Title
+      show:
+        delete_button: Delete button
+        delete_confirmation: Delete confirmation
+        edit_button: Edit button
+        title: Title
     play_gathering:
       sections:
         play_sessions: Play sessions
diff --git a/config/routes.rb b/config/routes.rb
index 4e561c1..ef80c10 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -17,6 +17,7 @@ Rails.application.routes.draw do
       get "posts", on: :member
     end
     resources :posts
+    resources :invitations
   end

   namespace :api do
diff --git a/db/migrate/20211001100637_create_invitations.rb b/db/migrate/20211001100637_create_invitations.rb
new file mode 100644
index 0000000..e4fb931
--- /dev/null
+++ b/db/migrate/20211001100637_create_invitations.rb
@@ -0,0 +1,14 @@
+class CreateInvitations < ActiveRecord::Migration[6.1]
+  def change
+    create_table :invitations, id: false, force: true do |t|
+      t.string :uuid, null: false, limit: 36, index: { unique: true }, primary_key: true
+      t.string :name, null: false
+      t.string :front_user_id, limit: 36
+      t.datetime :used_at
+
+      t.timestamps
+    end
+
+    add_foreign_key :invitations, :front_users, column: :front_user_id, primary_key: "uuid"
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 12575ab..f57ae05 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.

-ActiveRecord::Schema.define(version: 2021_09_30_161442) do
+ActiveRecord::Schema.define(version: 2021_10_01_100637) do

   create_table "active_storage_attachments", charset: "utf8mb4", collation: "utf8mb4_bin", force: :cascade do |t|
     t.string "name", null: false
@@ -85,6 +85,16 @@ ActiveRecord::Schema.define(version: 2021_09_30_161442) do
     t.index ["uuid"], name: "index_front_users_on_uuid", unique: true
   end

+  create_table "invitations", primary_key: "uuid", id: { type: :string, limit: 36 }, charset: "utf8mb4", collation: "utf8mb4_bin", force: :cascade do |t|
+    t.string "name", null: false
+    t.string "front_user_id", limit: 36
+    t.datetime "used_at"
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+    t.index ["front_user_id"], name: "fk_rails_415b8ee2dd"
+    t.index ["uuid"], name: "index_invitations_on_uuid", unique: true
+  end
+
   create_table "play_gatherings", primary_key: "uuid", id: { type: :string, limit: 36 }, charset: "utf8mb4", collation: "utf8mb4_bin", force: :cascade do |t|
     t.string "title", null: false
     t.text "description", null: false
@@ -164,6 +174,7 @@ ActiveRecord::Schema.define(version: 2021_09_30_161442) do

   add_foreign_key "active_storage_attachments", "active_storage_blobs", column: "blob_id"
   add_foreign_key "active_storage_variant_records", "active_storage_blobs", column: "blob_id"
+  add_foreign_key "invitations", "front_users", primary_key: "uuid"
   add_foreign_key "play_gatherings", "front_users", primary_key: "uuid"
   add_foreign_key "play_sessions", "play_gatherings", primary_key: "uuid"
   add_foreign_key "posts", "front_users", primary_key: "uuid"
diff --git a/test/controllers/admin/invitations_controller_test.rb b/test/controllers/admin/invitations_controller_test.rb
new file mode 100644
index 0000000..20dec78
--- /dev/null
+++ b/test/controllers/admin/invitations_controller_test.rb
@@ -0,0 +1,127 @@
+require "test_helper"
+
+class Admin::InvitationsControllerTest < ActionController::TestCase
+  def setup
+    setup_admin_user
+  end
+
+  def test_index
+    invitation_1 = FactoryBot.create(:invitation, created_at: "2020-04-25")
+    invitation_2 = FactoryBot.create(:invitation, created_at: "2020-04-26")
+
+    get :index
+
+    assert_template "admin/invitations/index"
+    assert_primary_keys([invitation_2, invitation_1], assigns(:invitations))
+  end
+
+  def test_show
+    invitation = FactoryBot.create(:invitation)
+
+    get :show, params: { id: invitation }
+
+    assert_template "admin/invitations/show"
+    assert_equal(invitation, assigns(:invitation))
+  end
+
+  def test_new
+    get :new
+    assert_template "admin/invitations/new"
+    assert_not_nil(assigns(:invitation))
+  end
+
+  def test_create_invalid
+    front_user_1 = FactoryBot.create(:front_user)
+
+    Invitation.any_instance.stubs(:valid?).returns(false)
+
+    post(
+      :create,
+      params: {
+        invitation: {
+          name: "INVITATION_NAME"
+        }
+      }
+    )
+
+    assert_template "new"
+    assert_not_nil(flash[:alert])
+  end
+
+  def test_create_valid
+    front_user_1 = FactoryBot.create(:front_user)
+
+    post(
+      :create,
+      params: {
+        invitation: {
+          name: "INVITATION_NAME"
+        }
+      }
+    )
+
+    invitation = Invitation.last
+    assert_redirected_to [:admin, invitation]
+
+    assert_equal("INVITATION_NAME", invitation.name)
+  end
+
+  def test_edit
+    invitation = FactoryBot.create(:invitation)
+
+    get :edit, params: { id: invitation }
+
+    assert_template "edit"
+    assert_equal(invitation, assigns(:invitation))
+  end
+
+  def test_update_invalid
+    invitation = FactoryBot.create(:invitation)
+
+    Invitation.any_instance.stubs(:valid?).returns(false)
+
+    put(
+      :update,
+      params: {
+        id: invitation,
+        invitation: {
+          name: "THE_NEW_NAME"
+        }
+      }
+    )
+
+    assert_template "edit"
+    assert_not_nil(flash[:alert])
+  end
+
+  def test_update_valid
+    invitation = FactoryBot.create(:invitation)
+
+    put(
+      :update,
+      params: {
+        id: invitation,
+        invitation: {
+          name: "THE_NEW_NAME"
+        }
+      }
+    )
+
+    assert_redirected_to [:admin, invitation]
+    assert_not_nil(flash[:notice])
+
+    invitation.reload
+    assert_equal("THE_NEW_NAME", invitation.name)
+  end
+
+  def test_destroy
+    invitation = FactoryBot.create(:invitation)
+
+    delete :destroy, params: { id: invitation }
+
+    assert_redirected_to :admin_invitations
+    assert_not_nil(flash[:notice])
+
+    assert !Invitation.exists?(invitation.id)
+  end
+end
diff --git a/test/controllers/front/front_users_controller_test.rb b/test/controllers/front/front_users_controller_test.rb
index 048ea14..78459f6 100644
--- a/test/controllers/front/front_users_controller_test.rb
+++ b/test/controllers/front/front_users_controller_test.rb
@@ -37,7 +37,28 @@ class Front::FrontUsersControllerTest < ActionController::TestCase
     assert_not_nil(flash[:alert])
   end

+  def test_create_without_valid_invitation
+    assert_difference("FrontUser.count", 0) do
+      post(
+        :create,
+        params: {
+          front_user: {
+            name: "Front Wadus",
+            email: "email@email.com",
+            password: "Password!",
+            password_confirmation: "Password!"
+          }
+        }
+      )
+    end
+
+    assert_template "new"
+    assert_not_nil(flash[:alert])
+  end
+
   def test_create_valid
+    invitation = FactoryBot.create(:invitation)
+
     post(
       :create,
       params: {
@@ -45,7 +66,8 @@ class Front::FrontUsersControllerTest < ActionController::TestCase
           name: "Front Wadus",
           email: "email@email.com",
           password: "Password!",
-          password_confirmation: "Password!"
+          password_confirmation: "Password!",
+          invitation_id: invitation
         }
       }
     )
@@ -55,6 +77,11 @@ class Front::FrontUsersControllerTest < ActionController::TestCase

     assert_equal("Front Wadus", front_user.name)
     assert_equal("email@email.com", front_user.email)
+    assert_equal(invitation, front_user.invitation)
+
+    invitation.reload
+    assert(invitation.used?)
+    assert_equal(front_user, invitation.front_user)
   end

   def test_edit
diff --git a/test/factories.rb b/test/factories.rb
index f2d94da..f46b531 100644
--- a/test/factories.rb
+++ b/test/factories.rb
@@ -38,4 +38,8 @@ FactoryBot.define do
   factory :play_session do
     play_gathering
   end
+
+  factory :invitation do
+    name { Faker::Lorem.sentence(word_count: 3) }
+  end
 end
diff --git a/test/models/front_user_test.rb b/test/models/front_user_test.rb
index 35430ce..194444a 100644
--- a/test/models/front_user_test.rb
+++ b/test/models/front_user_test.rb
@@ -27,4 +27,28 @@ class FrontUserTest < ActiveSupport::TestCase

     assert_primary_keys([front_user_3, front_user_2, front_user_1], FrontUser.order_by_recent)
   end
+
+  # Invitation :: INI
+  def test_on_create_no_fail_if_no_invitation_but_invitation_no_required
+    front_user = FactoryBot.create(:front_user, invitation_id: nil, require_invitation: false)
+    assert front_user.valid?
+  end
+
+  def test_on_create_fail_if_no_invitation
+    front_user = FactoryBot.build(:front_user, invitation_id: nil, require_invitation: true)
+    refute front_user.valid?
+  end
+
+  def test_on_create_fail_if_used_invitation
+    invitation = FactoryBot.create(:invitation, used_at: Time.now)
+    front_user = FactoryBot.build(:front_user, invitation_id: invitation, require_invitation: true)
+    refute front_user.valid?
+  end
+
+  def test_on_create_with_proper_invitation
+    invitation = FactoryBot.create(:invitation)
+    front_user = FactoryBot.create(:front_user, invitation_id: invitation, require_invitation: true)
+    assert front_user.valid?
+  end
+  # Invitation :: END
 end
diff --git a/test/models/invitation_test.rb b/test/models/invitation_test.rb
new file mode 100644
index 0000000..8bb1c0f
--- /dev/null
+++ b/test/models/invitation_test.rb
@@ -0,0 +1,59 @@
+require "test_helper"
+
+class InvitationTest < ActiveSupport::TestCase
+  def test_fixture_is_valid
+    assert FactoryBot.create(:invitation).valid?
+  end
+
+  def test_validations
+    invitation = FactoryBot.build(:invitation)
+    assert(invitation.valid?)
+
+    invitation = FactoryBot.build(:invitation, name: nil)
+    refute(invitation.valid?)
+
+    invitation = FactoryBot.build(:invitation, front_user: nil)
+    assert(invitation.valid?)
+  end
+
+  def test_uuid_on_create
+    invitation = FactoryBot.build(:invitation)
+    assert_nil(invitation.uuid)
+
+    invitation.save!
+
+    assert_not_nil(invitation.uuid)
+  end
+
+  def test_primary_key
+    invitation = FactoryBot.create(:invitation)
+
+    assert_equal(invitation, Invitation.find(invitation.uuid))
+  end
+
+  def test_relations
+    front_user = FactoryBot.create(:front_user)
+
+    invitation = FactoryBot.create(:invitation, front_user: front_user)
+
+    assert_equal(front_user, invitation.front_user)
+  end
+
+  def test_used
+    invitation = FactoryBot.create(:invitation)
+    refute invitation.used?
+
+    invitation.used_at = Time.now
+    assert invitation.used?
+  end
+
+  def test_use
+    front_user = FactoryBot.create(:front_user)
+    invitation = FactoryBot.create(:invitation)
+    refute invitation.used?
+
+    invitation.use!(front_user)
+    assert invitation.used?
+    assert_equal(front_user, invitation.front_user)
+  end
+end
diff --git a/test/models/post_test copy.rb b/test/models/post_test copy.rb
new file mode 100644
index 0000000..4458980
--- /dev/null
+++ b/test/models/post_test copy.rb
@@ -0,0 +1,71 @@
+require "test_helper"
+
+class PostTest < ActiveSupport::TestCase
+  def test_fixture_is_valid
+    assert FactoryBot.create(:post).valid?
+  end
+
+  def test_validations
+    post = FactoryBot.build(:post)
+    assert(post.valid?)
+
+    post = FactoryBot.build(:post, title: nil)
+    refute(post.valid?)
+
+    post = FactoryBot.build(:post, body: nil)
+    refute(post.valid?)
+
+    post = FactoryBot.build(:post, body: "")
+    refute(post.valid?)
+
+    post = FactoryBot.build(:post, body: "A" * 6)
+    refute(post.valid?)
+
+    post = FactoryBot.build(:post, body: "A" * 65_536)
+    refute(post.valid?)
+
+    post = FactoryBot.build(:post, body: "A" * 30)
+    assert(post.valid?)
+
+    post = FactoryBot.build(:post, front_user: nil)
+    refute(post.valid?)
+  end
+
+  def test_uuid_on_create
+    post = FactoryBot.build(:post)
+    assert_nil(post.uuid)
+
+    post.save!
+
+    assert_not_nil(post.uuid)
+  end
+
+  def test_primary_key
+    post = FactoryBot.create(:post)
+
+    assert_equal(post, Post.find(post.uuid))
+  end
+
+  def test_relations
+    front_user = FactoryBot.create(:front_user)
+
+    post = FactoryBot.create(:post, front_user: front_user)
+
+    assert_equal(front_user, post.front_user)
+  end
+
+  def test_tags
+    post = FactoryBot.create(:post, tag_list: ["one", "two"])
+    assert_equal(2, post.tags.count)
+    assert_equal(["one", "two"], post.tag_list)
+    assert_equal(["one", "two"], post.tags.map(&:name))
+
+    post = FactoryBot.create(:post, tag_list: "one, two")
+    assert_equal(2, post.tags.count)
+    assert_equal(["one", "two"], post.tag_list)
+    assert_equal(["one", "two"], post.tags.map(&:name))
+
+    post = FactoryBot.create(:post, tag_list: "One, Two")
+    assert_equal(["one", "two"], post.tag_list)
+  end
+end