6 ms·

IIRC the way someone reimplemented flexbox was to take the layout tests and iterate until their implementation passed. https://yogalayout.com/ https://yogalayo

• nicoburns 4y ago
  Yes, but the fact that someone had to do this makes it clear that the spec isn't complete. A complete spec would state the algorithm unambiguously. You might still need to fix bugs based on tests, but you shouldn't need to be working about behaviour because it's unspecified.
  • asiachick 4y ago
    Not my experience at all. It doesn't matter how well written a spec is. No tests = no conformance. End of story. Most people can't hold an entire spec in their head or think through all the ramifications of the edge cases. Even the spec writers. I work on several specs. I work with people who work on specs. They're all mortal. No test = divergence. Always and without fail.
• andrewmcwatters 4y ago
  There may be layout tests for flexbox (I haven't looked into them, because I don't care about them as much as normal flow) but there are basically no layout tests for CSS 2.1 that aren't fully manual. So basically for 25 years, as far as I understand, no one said, hey given a set of known layout constraints and rasterization parameters, let's create automated tests. For 25 years. Maybe I'm wrong, but I keep looking for these tests and the ones that exist for normal flow are a nonstarter.
  • Macha 4y ago
    There was acid2, so merely "almost none" rather than actually none