grid-limits-001.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-grid/grid-definition/grid-limits-001.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<link rel="help" href="https://drafts.csswg.org/css-grid/#overlarge-grids">

<link rel="author" title="Tab Atkins-Bittner" href="https://xanthir.com/contact">

<link rel="author" title="Elika J Etemad" href="http://inkedblade.net/contact">

<meta name="flags" content="should">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="../../support/computed-testcommon.js"></script>

<div id=target>

    <div id=child1></div>

    <div id=child2></div>

</div>

<style>

    #target {

        display: grid;

        position: absolute;

</style>

<script>

const target = document.querySelector("#target");

const child1 = document.querySelector("#child1");

const child2 = document.querySelector("#child2");

test(()=>{

    target.style.gridTemplateRows = "repeat(9999, 1px)";

    target.style.gridTemplateColumns = "repeat(9999, 1px)";

    const height = getComputedStyle(target).height;

    const width = getComputedStyle(target).width;

    assert_equals(height, "9999px", "repeat(9999, 1px) should make grid height 9999px");

    assert_equals(width, "9999px", "repeat(9999, 1px) should make grid width 9999px");

    target.removeAttribute('style');

}, "repeat(9999) should be supported in both axises");

test(()=>{

    // Start from no explicit grid, so only implicit tracks happen

    target.style.gridAutoRows = "1px";

    target.style.gridAutoColumns = "1px";

    child1.style.gridRowEnd = "10000";

    child1.style.gridColumnEnd = "10000";

    child2.style.gridRowStart = "-10000";

    child2.style.gridColumnStart = "-10000";

    const height = getComputedStyle(target).height;

    const width = getComputedStyle(target).width;

    assert_equals(height, "19998px", "Positioning children at lines -10k and 10k should generate 19998 implicit 1px tracks.");

    assert_equals(width, "19998px", "Positioning children at lines -10k and 10k should generate 19998 implicit 1px tracks.");

    target.removeAttribute('style');

    child1.removeAttribute('style');

    child2.removeAttribute('style');

}, "Implicit grid should support lines [-10k, 10k].");

</script>