Move test to the private gem

saas/test/controllers/sessions_controller_test.rb

@@ -0,0 +1,21 @@
+require "test_helper"
+
+class SessionsControllerTest < ActionDispatch::IntegrationTest
+  test "create for a new user" do
+    assert_difference -> { Identity.count }, +1 do
+      assert_difference -> { MagicLink.count }, +1 do
+        post session_path,
+          params: { email_address: "nonexistent-#{SecureRandom.hex(6)}@example.com" },
+          headers: http_basic_auth_headers("testname", "testpassword")
+      end
+    end
+
+    assert_redirected_to session_magic_link_path
+  end
+
+  private
+    def http_basic_auth_headers(user, password)
+      { "Authorization" => ActionController::HttpAuthentication::Basic.encode_credentials(user, password) }
+    end
+end
+