Merge discourse-narrative-bot into core plugins.

plugins/discourse-narrative-bot/spec/integration/discobot_certificate_spec.rb

@@ -0,0 +1,33 @@
+require 'rails_helper'
+
+describe "Discobot Certificate" do
+  let(:user) { Fabricate(:user, name: 'Jeff Atwood') }
+
+  describe 'when viewing the certificate' do
+    describe 'when params are missing' do
+      it "should raise the right errors" do
+        params = {
+          date: Time.zone.now.strftime("%b %d %Y"),
+          user_id: user.id
+        }
+
+        params.each do |key, _|
+          expect { xhr :get, '/discobot/certificate.svg', params.except(key) }
+            .to raise_error(Discourse::InvalidParameters)
+        end
+      end
+    end
+
+    describe 'when date is invalid' do
+      it 'should raise the right error' do
+        expect do
+          xhr :get, '/discobot/certificate.svg',
+            name: user.name,
+            date: "<script type=\"text/javascript\">alert('This app is probably vulnerable to XSS attacks!');</script>",
+            avatar_url: 'https://somesite.com/someavatar',
+            user_id: user.id
+        end.to raise_error(ArgumentError, 'invalid date')
+      end
+    end
+  end
+end