css/css-grid/computed-grid-column.html

<!DOCTYPE html>
<title>CSS Grid Layout Test: row/column is complex calc()</title>
<link rel="help" href="https://drafts.csswg.org/css-grid-1/">
<style>
.grid {
  position: relative;
  display: inline-grid;
  grid-template-columns: 100px 150px;
  grid-template-rows: 150px 100px;
}
.firstRowSecondColumn {
  grid-row: calc(2 * sign(100em - 1px) - 1);
  grid-column: calc(3 - sign(100em - 1px));
}
.someHugeValue {
  /* Just check that we don't crash. */
  grid-row: calc(1e100);
  grid-column: calc(-1e100);
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div class="grid">
  <div class="firstRowSecondColumn" id="target">X XX X</div>
  <div class="someHugeValue">X XX X</div>
</div>
<script>
test(() => {
  assert_equals(getComputedStyle(target).gridRow, '1');
  assert_equals(getComputedStyle(target).gridColumn, '2');
});
</script>