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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Masonry Layout Test: getComputedStyle().gridTemplateColumns</title>
<link rel="author" title="Alison Maher" href="mailto:almaher@microsoft.com">
<link rel="help" href="https://drafts.csswg.org/css-grid/#resolved-track-list" title="7.2.6. Resolved Value of a Track Listing">
<meta name="assert" content="Checks the resolved value of grid-template-columns on a masonry container with a leading implicit track.">
<style>
#target {
display: masonry;
width: 1px;
font-size: 1px;
}
#item {
grid-column: auto / 1;
width: 10px;
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="target">
<div id="item"></div>
</div>
<script>
// Can't use the test_computed_value from computed-testcommon.js
// because grid-template-columns doesn't round-trip in this test.
function grid_template_columns(specified, computed) {
test(() => {
const target = document.getElementById('target');
target.style.gridTemplateColumns = '';
target.style.gridTemplateColumns = specified;
assert_equals(getComputedStyle(target).gridTemplateColumns, computed);
}, `Property grid-template-columns value '${specified}' computes to '${computed}'`);
}
grid_template_columns("1px repeat(auto-fill, auto) 3px", "10px 1px 0px 3px");
grid_template_columns("1px repeat(auto-fit, auto) 3px", "10px 1px 0px 3px");
grid_template_columns("1px [a] repeat(auto-fill, min-content max-content) [b] 4px", "10px 1px [a] 0px 0px [b] 4px");
grid_template_columns("1px [a] repeat(auto-fit, min-content max-content) [b] 4px", "10px 1px [a] 0px 0px [b] 4px");
grid_template_columns("1px [a] repeat(auto-fill, [b] fit-content(200px) [c]) [d] 3px", "10px 1px [a b] 0px [c d] 3px");
grid_template_columns("1px [a] repeat(auto-fit, [b] fit-content(200px) [c]) [d] 3px", "10px 1px [a b] 0px [c d] 3px");
grid_template_columns("[a] 1px repeat(auto-fill, auto [b] auto) 4px [d]", "10px [a] 1px 0px [b] 0px 4px [d]");
grid_template_columns("[a] 1px repeat(auto-fit, auto [b] auto) 4px [d]", "10px [a] 1px 0px [b] 0px 4px [d]");
grid_template_columns("100% [a] repeat(auto-fill, [b] min-content [c]) [d] 300%", "10px 1px [a b] 0px [c d] 3px");
grid_template_columns("100% [a] repeat(auto-fit, [b] min-content [c]) [d] 300%", "10px 1px [a b] 0px [c d] 3px");
grid_template_columns("[a] 1em repeat(auto-fill, max-content [b] auto) 4em [d]", "10px [a] 1px 0px [b] 0px 4px [d]");
grid_template_columns("[a] 1em repeat(auto-fit, max-content [b] auto) 4em [d]", "10px [a] 1px 0px [b] 0px 4px [d]");
</script>
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