<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Grid Layout Test: Intrinsic contribution of an item with flex tracks</title>
<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.com">
<link rel="help" href="https://drafts.csswg.org/css-grid/#algo-spanning-items" title="11.5.3 Increase sizes to accommodate spanning items crossing content-sized tracks">
<link rel="help" href="https://drafts.csswg.org/css-grid/#algo-spanning-flex-items" title="11.5.4 Increase sizes to accommodate spanning items crossing flexible tracks">
<meta name="assert" content="This test checks that the intrinsic contribution of a single grid item is distributed correctly among the tracks it spans when flexible tracks are involved.">
<style>
#grid {
  display: grid;
  width: 50px;
  height: 50px;
  border: solid;
}
#item {
  width: 100px;
  height: 100px;
  background: blue;
}
</style>

<div id="log"></div>

<div id="grid">
  <div id="item"></div>
</div>

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../grid-definition/support/testing-utils.js"></script>
<script>
const item = document.getElementById("item");
function checkTrackSizes(span, trackList, expected) {
  item.style.gridColumn = item.style.gridRow = `span ${span}`;
  TestingUtils.testGridTemplateColumnsRows("grid", trackList, trackList, expected, expected);
}

// Item spanning an intrinsic flexible track
checkTrackSizes(1, "0fr", "100px");
checkTrackSizes(1, "1fr", "100px");
checkTrackSizes(1, "2fr", "100px");

// Item spanning a fixed flexible track
checkTrackSizes(1, "minmax(0, 0fr)", "0px");
checkTrackSizes(1, "minmax(0, .5fr)", "25px");
checkTrackSizes(1, "minmax(0, 1fr)", "50px");
checkTrackSizes(1, "minmax(0, 2fr)", "50px");
checkTrackSizes(1, "minmax(75px, 1fr)", "75px");

// Item spanning 2 intrinsic flexible tracks
checkTrackSizes(2, "0fr 0fr", "50px 50px");
checkTrackSizes(2, "0fr 1fr", "0px 100px");
checkTrackSizes(2, "1fr 0fr", "100px 0px");
checkTrackSizes(2, "1fr 1fr", "50px 50px");
checkTrackSizes(2, "1fr 3fr", "25px 75px");
checkTrackSizes(2, "0fr 0fr 1fr", "50px 50px 0px");

// Item spanning 2 fixed flexible tracks
checkTrackSizes(2, "minmax(0, 0fr) minmax(0, 0fr)", "0px 0px");
checkTrackSizes(2, "minmax(0, 0fr) minmax(0, 1fr)", "0px 50px");
checkTrackSizes(2, "minmax(15px, 0fr) minmax(0, 1fr)", "15px 35px");
checkTrackSizes(2, "minmax(20px, 1fr) minmax(0, 1fr)", "25px 25px");
checkTrackSizes(2, "minmax(30px, 1fr) minmax(0, 1fr)", "30px 20px");

// Item spanning an intrinsic flexible track and a fixed flexible track
checkTrackSizes(2, "0fr minmax(0, 0fr)", "100px 0px");
checkTrackSizes(2, "0fr minmax(0, 1fr)", "100px 0px");
checkTrackSizes(2, "1fr minmax(0, 1fr)", "100px 0px");
checkTrackSizes(2, "1fr minmax(25px, 1fr)", "75px 25px");

// Item spanning an intrinsic flexible track and an intrinsic non-flexible track
checkTrackSizes(2, "0fr auto", "100px 0px");
checkTrackSizes(2, "1fr auto", "100px 0px");
checkTrackSizes(2, "1fr max-content", "100px 0px");

// Item spanning a fixed flexible track and an intrinsic non-flexible track
checkTrackSizes(2, "minmax(0, 0fr) auto", "0px 50px");
checkTrackSizes(2, "minmax(0, 1fr) auto", "50px 0px");
checkTrackSizes(2, "minmax(25px, 0fr) auto", "25px 25px");
checkTrackSizes(2, "minmax(25px, 1fr) auto", "50px 0px");
</script>
