metadata:
  title: "无效参数测试"
  size: "16:9"
  dpi: 96

slides:
  - elements:
      # 无效的 fit 值
      - type: image
        src: "../fixtures/images/test_image.png"
        box: [1, 1, 3, 2]
        fit: invalid_mode

      # 无效的背景色
      - type: image
        src: "../fixtures/images/test_image.png"
        box: [5, 1, 3, 2]
        fit: contain
        background: "not-a-color"