QA: Tool Rendering — LangGraph (FastAPI)

Prerequisites

• Demo is deployed and accessible
• Agent backend is healthy (check /api/health)

Test Steps

1. Basic Functionality

• Navigate to the tool-rendering demo page
• Verify the chat interface loads in a centered full-height layout
• Verify the chat input placeholder "Type a message" is visible
• Send a basic message
• Verify the agent responds

2. Feature-Specific Checks

Suggestions

• Verify "Weather in San Francisco" suggestion button is visible
• Verify "Weather in New York" suggestion button is visible
• Verify "Weather in Tokyo" suggestion button is visible
• Click a weather suggestion and verify it populates the input or sends the message

Weather Card Rendering (useRenderTool)

• Type "What's the weather in San Francisco?"
• Verify loading state shows "Retrieving weather..." with a spinner
• Verify the WeatherCard renders (data-testid="weather-card") with:
  • City name displayed (data-testid="weather-city")
  • Temperature in both Celsius and Fahrenheit
  • Humidity percentage (data-testid="weather-humidity")
  • Wind speed in mph (data-testid="weather-wind")
  • Feels-like temperature (data-testid="weather-feels-like")
  • Conditions text with appropriate weather icon (sun/rain/cloud)
• Verify the card background color matches the weather condition theme:
  • Clear/Sunny: #667eea (blue-purple)
  • Rain/Storm: #4A5568 (dark gray)
  • Cloudy: #718096 (medium gray)
  • Snow: #63B3ED (light blue)

Multiple Weather Queries

• Ask about weather in a second city
• Verify a second WeatherCard renders without breaking the first
• Verify each card shows the correct city name

3. Error Handling

• Send an empty message (should be handled gracefully)
• Verify no console errors during normal usage

Expected Results

• Chat loads within 3 seconds
• Agent responds within 10 seconds
• Weather cards render with all data fields populated
• Weather icon and theme color match the conditions
• No UI errors or broken layouts