Add mock_user strategy for development

config/initializers/warden/strategies/mock_user.rb

@@ -0,0 +1,15 @@
+Warden::Strategies.add(:mock_user) do
+  def authenticate!
+    logger.warn("Authenticating with mock_gds_sso strategy")
+
+    test_user ||= User.first
+
+    if test_user
+      success!(test_user)
+    elsif Rails.env.test? && ENV["GDS_SSO_MOCK_INVALID"].present?
+      fail!(:invalid)
+    else
+      raise "Mock_user running in mock mode and no test user found. Normally we'd load the first user in the database. Create a user in the database."
+    end
+  end
+end

config/settings/development.yml

@@ -9,4 +9,4 @@ forms_api:
   auth_key: changeme
 
 # Use mock authentication
-auth_provider: mock_gds_sso
+auth_provider: mock_user