Mostly working state

test/controllers/dashboard_controller_test.rb

@@ -1,7 +1,14 @@
 require "test_helper"
 
 class DashboardControllerTest < ActionDispatch::IntegrationTest
-  # test "the truth" do
-  #   assert true
-  # end
+  test "options returns JSON" do
+    get "/dashboard/options",
+        params: {
+          table: 'Joint',
+          pluck_column: 'Joint'
+        }
+
+    assert_response :success
+    assert_equal "application/json", response.media_type
+  end
 end