Add controller tests

test/controllers/commands_controller_test.rb

@@ -0,0 +1,28 @@
+require "test_helper"
+
+class CommandsControllerTest < ActionDispatch::IntegrationTest
+  setup do
+    sign_in_as :kevin
+  end
+
+  test "command that results in a redirect" do
+    assert_difference -> { users(:kevin).commands.count }, +1 do
+      post commands_path, params: { command: "#{cards(:logo).id}" }
+    end
+
+    assert_redirected_to cards(:logo)
+  end
+
+  test "command that triggers a redirect back" do
+    assert_difference -> { users(:kevin).commands.count }, +1 do
+      post commands_path, params: { command: "/assign @kevin" }, headers: { "HTTP_REFERER" => cards_path }
+    end
+
+    assert_redirected_to cards_path
+  end
+
+  test "re-render form on error" do
+    post commands_path, params: { command: "/assign @some_missing_user" }, headers: { "HTTP_REFERER" => cards_path }
+    assert_turbo_stream action: :replace, target: "commands_form"
+  end
+end