Add component test

spec/components/tab_navigation_component_spec.rb

@@ -0,0 +1,27 @@
+require "rails_helper"
+
+RSpec.describe TabNavigationComponent, type: :component  do
+  let(:items) do
+    [{ name: "Application", url: "#", current: true },
+     { name: "Notes", url: "#" },
+     { name: "Timeline", url: "#" }]
+  end
+
+  context "nav tabs appearing as selected" do
+    it "when the item is 'current' then that tab is selected" do
+      result = render_inline(described_class.new(items: items))
+
+      expect(result.css('.app-tab-navigation__link[aria-current="page"]').text).to include("Application")
+    end
+  end
+
+  context "rendering tabs" do
+    it "renders all of the nav tabs specified in the items hash passed to it" do
+      result = render_inline(described_class.new(items: items))
+
+      expect(result.text).to include("Application")
+      expect(result.text).to include("Notes")
+      expect(result.text).to include("Timeline")
+    end
+  end
+end

spec/rails_helper.rb

@@ -7,6 +7,7 @@ abort("The Rails environment is running in production mode!") if Rails.env.produ
 require "rspec/rails"
 require "capybara/rspec"
 require "selenium-webdriver"
+require "view_component/test_helpers"
 
 Capybara.register_driver :headless do |app|
   options = Selenium::WebDriver::Firefox::Options.new
@@ -80,4 +81,6 @@ RSpec.configure do |config|
 
   config.include Devise::Test::ControllerHelpers, type: :controller
   config.include Devise::Test::IntegrationHelpers, type: :request
+  config.include ViewComponent::TestHelpers, type: :component
+  config.include Capybara::RSpecMatchers, type: :component
 end