Blank Screen

Intent

Validate that the parser, layout engine, and renderer handle the absolute minimum valid .wraf file: a Screen node with only width and height, and no children whatsoever.

This is the "hello world" of the test suite. If this fails, every other test will also fail — fix this first.

What is being tested

• Parser: accepts Screen with only numeric properties, no children
• Layout engine: produces a ResolvedScreen with 1 box (the Screen itself)
• Renderer: builds a Scene and renders a blank canvas rectangle
• Playground: does not crash or show error messages

Acceptance criteria

✓ No errors in the errors bar ✓ Status bar shows "1 box" ✓ Canvas renders a blank beige rectangle — no child elements inside ✓ Zoom-to-fit works (no division-by-zero on minimal scene) ✓ Cursor anywhere in the file highlights the Screen box

Example

Open in playground →

Screen {
  width: 800
  height: 600
}

Preview