Add test for ApplicationHelper#user_opengraph

spec/helpers/application_helper_spec.rb

@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+describe ApplicationHelper, :type => :helper do
+  describe "#bootstrap_color" do
+    it 'should map error and alert to danger' do
+      expect(bootstrap_color("error")).to eq("danger")
+      expect(bootstrap_color("alert")).to eq("danger")
+    end
+
+    it 'should map notice to info' do
+      expect(bootstrap_color("notice")).to eq("info")
+    end
+
+    it 'should return any uncovered value' do
+      expect(bootstrap_color("success")).to eq("success")
+    end
+  end
+
+  describe "#user_opengraph" do
+    context "sample user" do
+      let(:user) { FactoryBot.create(:user,
+                                     display_name: 'Cunes',
+                                     bio: 'A bunch of raccoons in a trenchcoat.',
+                                     screen_name: 'raccoons') }
+
+      subject { user_opengraph(user) }
+
+
+      it 'should generate a matching OpenGraph structure for a user' do
+        allow(APP_CONFIG).to receive(:[]).with('site_name').and_return('pineapplespring')
+        expect(subject).to eq(<<-EOS.chomp)
+<meta property="og:title" content="Cunes" />
+<meta property="og:type" content="profile" />
+<meta property="og:image" content="http://test.host/images/large/no_avatar.png" />
+<meta property="og:url" content="http://test.host/raccoons" />
+<meta property="og:description" content="A bunch of raccoons in a trenchcoat." />
+<meta property="og:site_name" content="pineapplespring" />
+<meta property="profile:username" content="raccoons" />
+EOS
+      end
+    end
+  end
+end