Lesson model: first tests

Gemfile

@@ -35,7 +35,7 @@ gem 'sdoc', '~> 0.4.0', group: :doc
 group :development, :test do
 
   gem 'rspec-rails', '~> 3.0'
-
+  gem 'shoulda-matchers', require: false
   gem 'factory_girl_rails'
 
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console

Gemfile.lock

@@ -138,6 +138,8 @@ GEM
     sdoc (0.4.1)
       json (~> 1.7, >= 1.7.7)
       rdoc (~> 4.0)
+    shoulda-matchers (2.8.0)
+      activesupport (>= 3.0.0)
     spring (1.3.6)
     sprockets (3.2.0)
       rack (~> 1.0)
@@ -177,6 +179,7 @@ DEPENDENCIES
   rspec-rails (~> 3.0)
   sass-rails (~> 5.0)
   sdoc (~> 0.4.0)
+  shoulda-matchers
   spring
   sqlite3
   turbolinks

app/models/learning_material.rb

@@ -4,5 +4,5 @@ class LearningMaterial < ActiveRecord::Base
   validates :topic, :source,
             presence: true
 
-  default_scope { order('created_at DESC') }
+  scope :ordered, -> { order('created_at DESC') }
 end

app/models/lesson.rb

@@ -1,3 +1,6 @@
 class Lesson < ActiveRecord::Base
   has_many :learning_materials, dependent: :destroy
+
+  validates :title, presence: true
+
 end

config/locales/en.yml

@@ -21,3 +21,4 @@
 
 en:
   hello: "Hello world"
+  topic: "can't be blank"

spec/factories/learning_materials.rb

@@ -0,0 +1,9 @@
+FactoryGirl.define do
+  factory :learning_material do
+    topic 'Funny Lesson'
+    source 'Book in the closet'
+    description 'Very funny lesson on a great subject'
+    level 'Basic'
+    association :lesson, factory: :lesson
+  end
+end

spec/factories/lessons.rb

@@ -1,8 +1,8 @@
 FactoryGirl.define do
   factory :lesson do
-    title "MyString"
-    chapter "MyString"
-    category "MyString"
-    goal "MyText"
+    title 'Intro'
+    chapter '1 Intro'
+    category 'Rails'
+    goal 'First intro, your first web app'
   end
 end

spec/models/learning_material_spec.rb

@@ -1,5 +1,52 @@
 require 'rails_helper'
 
-RSpec.describe LearningMaterial, type: :model do
-  pending "add some examples to (or delete) #{__FILE__}"
+describe LearningMaterial, type: :model do
+
+  context 'with valid data' do
+
+    it 'has a valid factory' do
+      expect(build(:learning_material)).to be_valid
+    end
+
+    it 'is valid with validated fields filled in' do
+      learning_material = build(:learning_material, topic: 'Mooie titel', source: 'Ruby Nuby Book')
+      expect(learning_material).to be_valid
+    end
+
+    it 'is valid with blank non-validated fields' do
+      learning_material = build(:learning_material, description: nil, level: nil)
+      expect(learning_material).to be_valid
+    end
+
+    it { should belong_to(:lesson) }
+
+      context 'with scope' do
+        #not for daily behaviour, but f.e. when changing the dbase etc
+        it 'should return the materials in the correct order' do
+          @last = create(:learning_material, created_at: 1.day.ago)
+          @first = create(:learning_material, created_at: 3.day.ago)
+          expect(LearningMaterial.ordered.to_a).to eq([@last, @first])
+        end
+      end
+
+  end
+
+
+  context 'with invalid data' do
+
+    it 'is invalid without a topic' do
+      learning_material = build(:learning_material, topic: nil)
+      expect(learning_material).not_to be_valid
+      expect(learning_material.errors[:topic]).to include("can't be blank")
+    end
+
+    it 'is invalid without a source' do
+      learning_material = build(:learning_material, source: nil)
+      expect(learning_material).not_to be_valid
+      expect(learning_material.errors[:source]).to include("can't be blank")
+    end
+  end
+
 end
+
+

spec/models/lesson_spec.rb

@@ -1,5 +1,37 @@
 require 'rails_helper'
 
-RSpec.describe Lesson, type: :model do
-  pending "add some examples to (or delete) #{__FILE__}"
-end
+describe Lesson, type: :model do
+
+
+  context 'with valid data' do
+
+    it 'has a valid factory' do
+      expect(build(:lesson)).to be_valid
+    end
+
+    it 'is valid with validated fields filled in' do
+      lesson= build(:lesson, title: 'Mooie titel')
+      expect(lesson).to be_valid
+    end
+
+    it 'is valid with blank non-validated fields' do
+      lesson = build(:lesson, chapter: nil, category: nil, goal: nil)
+      expect(lesson).to be_valid
+    end
+
+    it { should have_many(:learning_materials) }
+    it { should have_many(:learning_materials).dependent(:destroy) }
+
+  end
+
+
+  context 'with invalid data' do
+
+    it 'is invalid without a title' do
+      lesson = build(:lesson, title: nil)
+      expect(lesson).not_to be_valid
+      expect(lesson.errors[:title]).to include("can't be blank")
+    end
+  end
+
+end

spec/rails_helper.rb

@@ -5,6 +5,7 @@
 abort("The Rails environment is running in production mode!") if Rails.env.production?
 require 'spec_helper'
 require 'rspec/rails'
+require 'shoulda/matchers'
 require 'factory_girl'
 # Add additional requires below this line. Rails is not loaded until this point!
 
@@ -29,8 +30,18 @@
 
 RSpec.configure do |config|
   # 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"
   config.include FactoryGirl::Syntax::Methods
+  config.before(:suite) do
+    DatabaseCleaner.strategy = :transaction
+    DatabaseCleaner.clean_with(:truncation)
+  end
+
+  config.around(:each) do |example|
+    DatabaseCleaner.cleaning do
+      example.run
+    end
+  end
 
   # If you're not using ActiveRecord, or you'd prefer not to run each of your
   # examples within a transaction, remove the following line or assign false