Add Article controller tests

Gemfile.lock

@@ -292,6 +292,7 @@ GEM
       actionpack (>= 5.2)
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
+    sqlite3 (1.6.4-x86_64-linux)
     stimulus-rails (1.3.0)
       railties (>= 6.0.0)
     stringio (3.0.9)
@@ -352,6 +353,7 @@ DEPENDENCIES
   simplecov (~> 0.17)
   simplecov-lcov (~> 0.8.0)
   sprockets-rails
+  sqlite3
   stimulus-rails
   turbo-rails
   tzinfo-data

spec/controllers/articles_controller_spec.rb

@@ -0,0 +1,100 @@
+# frozen_string_literal: true
+
+require_relative '../rails_helper'
+
+RSpec.describe ArticlesController do
+  let(:saved_article) { create(:article) }
+  let(:created_article) { build(:article) }
+
+  describe 'GET #index' do
+    it 'returns http success and renders the index template' do
+      get :index
+      expect(response).to have_http_status(:success)
+      expect(response).to render_template(:index)
+    end
+  end
+
+  describe 'GET #show' do
+    it 'returns http success and renders the show template' do
+      get :show, params: { id: saved_article.id }
+      expect(response).to have_http_status(:success)
+      expect(response).to render_template(:show)
+    end
+  end
+
+  describe 'GET #new' do
+    it 'returns http success and renders the new template' do
+      get :new
+      expect(response).to have_http_status(:success)
+      expect(response).to render_template(:new)
+    end
+  end
+
+  describe 'POST #create' do
+    let(:file) { fixture_file_upload(Rails.root.join('spec/fixtures/image7.jpg'), 'image/jpg') }
+
+    it 'creates a new article and redirects to the show page' do
+      expect do
+        post :create, params: { article: { name_ru: created_article.name_ru,
+                                          name_en: created_article.name_en,
+                                          description_ru: created_article.description_ru,
+                                          description_en: created_article.description_en,
+                                          images: [file] } }
+      end.to change(Article, :count).by(1)
+      expect(response).to redirect_to(assigns(:article))
+    end
+
+    it 'returns unprocessable_entity if article is not saved' do
+      expect do
+        post :create, params: { article: { name_ru: nil,
+                                          description_ru: nil,
+                                          images: file } }
+      end.not_to change(Article, :count).from(0)
+
+      expect(response).to have_http_status(:unprocessable_entity)
+      expect(response).to render_template(:new)
+    end
+  end
+
+  describe 'GET #edit' do
+    it 'returns http success and renders the edit template' do
+      get :edit, params: { id: saved_article.id }
+      expect(response).to have_http_status(:success)
+      expect(response).to render_template(:edit)
+    end
+  end
+
+  describe 'PATCH #update' do
+    let(:file) { fixture_file_upload(Rails.root.join('spec/fixtures/image7.jpg'), 'image/jpg') }
+
+    it 'updates the article and redirects to the show page' do
+      new_description = Faker::Lorem.characters(number: 40)
+
+      patch :update, params: { id: saved_article.id, article: { name_ru: Faker::Lorem.characters(number: 40),
+                                                               description_ru: new_description,
+                                                               images: file } }
+      expect(response).to redirect_to(assigns(:article))
+      saved_article.reload
+      expect(saved_article.description_ru).to eq(new_description)
+    end
+
+    it 'returns unprocessable entity if article is not updated' do
+      patch :update, params: { id: saved_article.id, article: { name_ru: nil,
+                                                               description_ru: nil,
+                                                               images: file } }
+
+      expect(response).to have_http_status(:unprocessable_entity)
+      expect(response).to render_template(:edit)
+    end
+  end
+
+  describe 'DELETE #destroy' do
+    it 'deletes the article and redirects to the index page' do
+      delete_article = create(:article)
+      expect do
+        delete :destroy, params: { id: delete_article.id }
+      end.to change(Article, :count).by(-1)
+      expect(response).to redirect_to(articles_path)
+    end
+  end
+end