wpt / css / css-grid / grid-lanes / subgrid / grid-subgridded-to-grid-lanes / row-subgrid-placement-invalidation-001.html

Status: FAIL | Duration: 1ms | Subtests: 0/1 | Open test on wpt.live | wpt.fyi

TestTest Source

/css/css-grid/grid-lanes/subgrid/grid-subgridded-to-grid-lanes/row-subgrid-placement-invalidation-001.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Grid Lanes Test: row-direction subgridded item placement invalidation</title>
<link rel="author" title="Alison Maher" href="mailto:almaher@microsoft.com">
<link rel="help" href="https://drafts.csswg.org/css-grid-3/#subgrids">
<link rel="help" href="https://drafts.csswg.org/css-grid-2/#track-sizing">
<style>
html, body {
  margin: 0;
  padding: 0;
}
#grid-lanes {
  height: 200px;
  display: grid-lanes;
  grid-lanes-direction: row;
  background: lightgray;
  grid-template-rows: [start] auto [end] 1fr;
}
#subgrid {
  display: grid;
  grid-row: 1 / -1;
  grid-template-rows: subgrid;
}
#item {
  height: 50px;
  background: lightblue;
  border: 5px solid gray;
  grid-row: start / end;
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<div id="grid-lanes">
  <div id="subgrid">
    <div id="item" data-offset-y="140"></div>
  </div>
</div>
<script>
"use strict";

let grid_lanes = document.getElementById("grid-lanes");
let item = document.getElementById("item");

// Computing an offset forces layout.
let item_offset = item.offsetTop;

grid_lanes.style.gridTemplateRows = "1fr [start] auto [end]";
item_offset = item.offsetTop;
checkLayout("#item");
</script>