QA: Pre-Built Popup — LangGraph (Python)

Prerequisites

• Demo is deployed and accessible at /demos/prebuilt-popup on the dashboard host
• Agent backend is healthy (/api/health or /api/copilotkit GET); OPENAI_API_KEY is set on Railway; LANGGRAPH_DEPLOYMENT_URL points at a LangGraph deployment exposing the neutral sample_agent graph (registered to the prebuilt-popup agent name)
• Note: the demo source contains no data-testid attributes. Checks below rely on verbatim visible text, role-based selectors, and DOM structure. The underlying agent is the neutral "helpful, concise assistant" (no frontend tools, no agent tools).

Test Steps

1. Basic Functionality

• Navigate to /demos/prebuilt-popup; verify the main content renders with heading (h1, text: "Popup demo — look for the floating launcher") and paragraph body mentioning <CopilotPopup />
• Verify a floating launcher button is visible in a corner of the viewport (typically bottom-right)
• Verify the <CopilotPopup /> window is OPEN by default (defaultOpen={true} in source) — a chat overlay sits on top of the page content with an input at the bottom
• Verify the chat input placeholder is verbatim "Ask the popup anything..."

2. Feature-Specific Checks

Popup Open / Close

• With the popup open, click the popup's close control (X button in the popup header); verify the popup window collapses and only the floating launcher remains
• Click the floating launcher; verify the popup re-opens showing the prior transcript (if any)
• Verify opening/closing does not trigger a full page reload (URL remains /demos/prebuilt-popup, main content stays mounted)
• Verify the popup overlays the page content rather than pushing layout (unlike the docked sidebar form factor)

Suggestions (useConfigureSuggestions)

• With the popup open, verify a suggestion pill titled "Say hi" is rendered in the chat surface (configured with available: "always")
• Click the "Say hi" pill; verify it sends the message "Say hi from the popup!" and an assistant text response appears within 10s

Chat Round-Trip

• Type "Hello" into the popup chat input ("Ask the popup anything..." placeholder) and submit; verify the user bubble appears, followed within 10s by an assistant text response
• Send a second message; verify a second valid response appears and the transcript auto-scrolls to the latest turn
• Close the popup and re-open it; verify the existing transcript persists within the open session

Agent Wiring

• Confirm (via DevTools → Network) that chat submissions POST to /api/copilotkit with agent name prebuilt-popup in the payload; response streams back as SSE with no 4xx/5xx status

3. Error Handling

• Attempt to send an empty message; verify it is a no-op (no user bubble, no network request)
• Resize the viewport to ~375px wide (mobile); verify the popup adapts (full-width or close to it) without clipping the input, header, or close button
• Stop the backend, send a message; verify the UI surfaces a visible error path rather than hanging silently; DevTools → Console shows no uncaught errors during any flow above

Expected Results

• Page + popup render within 3 seconds
• Assistant text response within 10 seconds
• Popup open/close animates smoothly with no layout jank
• Floating launcher remains accessible (not clipped) at all tested viewport sizes
• No UI layout breaks, no uncaught console errors
• The neutral agent (no tools) simply chats — no frontend tool registrations, no tool-call UI expected in this demo