Add AVIF image endpoint support

[ArnavBallinCode]

Fix for Issue #54

Overview

Added a new endpoint /image/avif to serve images in AVIF format, expanding httpbin's image format support alongside existing PNG, JPEG, and WebP endpoints.

Environment Details

• httpbin version: 0.10.2 (installed via direct repository clone)
• Python version: 3.10
• OS: macOS 13.4
• Dependencies:
  • System: libavif 0.11.1
  • Python packages: See requirements.txt

Expected Behavior

1. Endpoint Response:

   • Status code: 200 OK
   • Content-Type: image/avif
   • Valid AVIF image data returned

2. Browser Behavior:

   • Image displays correctly in AVIF-supporting browsers
   • Proper content type headers received

3. Docker Container:

   • Successfully builds and runs
   • Serves AVIF images correctly
   • Maintains all existing functionality

Actual Results

All expected behaviors have been verified:

1. Endpoint Testing (screenshots attached):

   HTTP/1.1 200 OK
   Content-Type: image/avif
   Content-Length: [size]
   

2. Browser Testing (screenshots attached):

   • Successfully displays in Chrome and Firefox
   • Network tab shows correct headers
   • Image loads properly

3. Docker Testing (screenshots attached):

   • Container builds successfully
   • Endpoint accessible and functioning
   • All tests passing

Implementation Details

1. New Code:

@app.route("/image/avif")
def image_avif():
    """Returns a simple AVIF image.
    ---
    tags:
      - Images
    produces:
      - image/avif
    responses:
      200:
        description: An AVIF image.
    """
    data = resource("images/pig_icon.avif")
    return Response(data, headers={"Content-Type": "image/avif"})

2. Files Modified:
   • core.py: Added new endpoint
   • images/: Added AVIF version of pig icon
   • requirements.txt: Added AVIF dependencies
   • Dockerfile: Added system dependencies

Testing Verification

1. Local Testing:

# Endpoint test
curl -I http://localhost:8000/image/avif
curl -v http://localhost:8000/image/avif > test.avif

# Image format verification
file httpbin/templates/images/pig_icon.avif

2. Docker Testing:

docker build -t httpbin:avif .
docker run -d -p 8080:8080 httpbin:avif
curl -I http://localhost:8080/image/avif

Backwards Compatibility

• No existing endpoints modified
• No changes to current functionality
• Only adds new capability
• Maintains existing image format support

Additional Notes

• All test cases documented with screenshots
• No exceptions or errors encountered during testing
• Implementation follows existing pattern of image endpoints
• Docker build and deployment verified
• Browser compatibility confirmed

Attachments

• Screenshot: Curl response headers
• Screenshot: Browser rendering
• Screenshot: Docker container tests

This PR has been thoroughly tested and documented according to the project's contribution guidelines. All test cases are reproducible using the provided instructions.