feat: ✨ Links controller

Show method, Home page, redirection validation

LinksController show method

test/controllers/links_controller_test.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+require 'test_helper'
+
+class LinksControllerTest < ActionDispatch::IntegrationTest
+  test 'Should get Home page' do
+    get '/'
+    assert_response :success, 'Not rendered home page'
+  end
+
+  test 'Should return 404 for unavailable slug' do
+    get '/test'
+    assert_response :not_found, 'Not rendered not found'
+  end
+
+  test 'Should redirect from slug to url' do
+    link = links(:one)
+    slug = link.slug
+    get short_url(slug: slug)
+
+    assert_redirected_to link.url, 'Not redirected to link url'
+  end
+end