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chromium/third_party/blink/web_tests/external/wpt/css/css-grid/grid-definition/grid-inline-support-flexible-lengths-001.html 

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Grid Layout Test: Support flexible lengths for 'grid-template-columns' and 'grid-template-rows' properties within an inline grid</title>
<link rel="author" title="Manuel Rego Casasnovas" href="mailto:[email protected]">
<link rel="help" href="http://www.w3.org/TR/css-grid-1/#fr-unit" title="5.1.3 Flexible Lengths: the fr unit">
<meta name="flags" content="ahem dom">
<meta name="assert" content="This test checks that 'grid-template-columns' and 'grid-template-rows' properties support flexible lengths (the 'fr' unit) within an inline grid, so you can use it to represent a fraction of the free space in the grid container.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/testing-utils.js"></script>
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
  .inline-grid {
    display: inline-grid;
    width: 800px;
    height: 600px;
    font: 10px/1 Ahem;
    justify-content: start;
    align-content: start;
  }
</style>
<div id="log"></div>

<div id="emptyGrid" class="inline-grid"></div>
<div id="grid" class="inline-grid">
  <div>GRID ITEM</div>
</div>

<script>
setup({explicit_done: true});
document.fonts.ready.then(()=> {
  // Valid values.
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "1fr", "1fr", "800px", "600px");
  TestingUtils.testGridTemplateColumnsRows("grid", "1fr", "1fr", "800px", "600px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "2fr", "2fr", "800px", "600px");
  TestingUtils.testGridTemplateColumnsRows("grid", "2fr", "2fr", "800px", "600px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "10fr", "10fr", "800px", "600px");
  TestingUtils.testGridTemplateColumnsRows("grid", "10fr", "10fr", "800px", "600px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "0.5fr", "0.5fr", "400px", "300px");
  TestingUtils.testGridTemplateColumnsRows("grid", "0.5fr", "0.5fr", "400px", "300px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", ".5fr", ".5fr", "400px", "300px");
  TestingUtils.testGridTemplateColumnsRows("grid", ".5fr", ".5fr", "400px", "300px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "minmax(100px, 1fr)", "minmax(100px, 1fr)", "800px", "600px");
  TestingUtils.testGridTemplateColumnsRows("grid", "minmax(100px, 1fr)", "minmax(100px, 1fr)", "800px", "600px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "minmax(1fr, 1fr)", "minmax(1fr, 1fr)", "800px", "600px");
  TestingUtils.testGridTemplateColumnsRows("grid", "minmax(1fr, 1fr)", "minmax(1fr, 1fr)", "800px", "600px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "1fr 1fr", "1fr 1fr", ["400px 400px", "repeat(2, 400px)"], ["300px 300px", "repeat(2, 300px)"]);
  TestingUtils.testGridTemplateColumnsRows("grid", "1fr 1fr", "1fr 1fr", ["400px 400px", "repeat(2, 400px)"], ["300px 300px", "repeat(2, 300px)"]);
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "0.25fr 0.75fr", "0.25fr 0.75fr", "200px 600px", "150px 450px");
  TestingUtils.testGridTemplateColumnsRows("grid", "0.25fr 0.75fr", "0.25fr 0.75fr", "200px 600px", "150px 450px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "1fr 2fr 1fr", "1fr 2fr 1fr", "200px 400px 200px", "150px 300px 150px");
  TestingUtils.testGridTemplateColumnsRows("grid", "1fr 2fr 1fr", "1fr 2fr 1fr", "200px 400px 200px", "150px 300px 150px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "auto 1fr 4fr 3fr 2fr", "auto 1fr 4fr 3fr 2fr", "0px 80px 320px 240px 160px", "0px 60px 240px 180px 120px");
  TestingUtils.testGridTemplateColumnsRows("grid", "auto 1fr 4fr 3fr 2fr", "auto 1fr 4fr 3fr 2fr", "90px 71px 284px 213px 142px", "10px 59px 236px 177px 118px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "1fr 4fr 100px 3fr 2fr", "1fr 4fr 100px 3fr 2fr", "70px 280px 100px 210px 140px", "50px 200px 100px 150px 100px");
  TestingUtils.testGridTemplateColumnsRows("grid", "1fr 4fr 100px 3fr 2fr", "1fr 4fr 100px 3fr 2fr", "70px 280px 100px 210px 140px", "50px 200px 100px 150px 100px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "auto 1fr", "auto 1fr", "0px 800px", "0px 600px");
  TestingUtils.testGridTemplateColumnsRows("grid", "auto 1fr", "auto 1fr", "90px 710px", "10px 590px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "max-content 1fr", "max-content 1fr", "0px 800px", "0px 600px");
  TestingUtils.testGridTemplateColumnsRows("grid", "max-content 1fr", "max-content 1fr", "90px 710px", "10px 590px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "min-content 1fr", "min-content 1fr", "0px 800px", "0px 600px");
  TestingUtils.testGridTemplateColumnsRows("grid", "min-content 1fr", "min-content 1fr", "40px 760px", "20px 580px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "1fr auto", "1fr auto", "800px 0px", "600px 0px");
  TestingUtils.testGridTemplateColumnsRows("grid", "1fr auto", "1fr auto", "800px 0px", "600px 0px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "300px 1fr", "200px 1fr", "300px 500px", "200px 400px");
  TestingUtils.testGridTemplateColumnsRows("grid", "300px 1fr", "200px 1fr", "300px 500px", "200px 400px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "800px 1fr", "600px 1fr", "800px 0px", "600px 0px");
  TestingUtils.testGridTemplateColumnsRows("grid", "800px 1fr", "600px 1fr", "800px 0px", "600px 0px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "1000px 1fr", "700px 1fr", "1000px 0px", "700px 0px");
  TestingUtils.testGridTemplateColumnsRows("grid", "1000px 1fr", "700px 1fr", "1000px 0px", "700px 0px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "calc(50px + 50%) 1fr", "calc(50px + 50%) 1fr", "450px 350px", "350px 250px");
  TestingUtils.testGridTemplateColumnsRows("grid", "calc(50px + 50%) 1fr", "calc(50px + 50%) 1fr", "450px 350px", "350px 250px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "minmax(100px, 300px) 1fr", "minmax(100px, 200px) 1fr", "300px 500px", "200px 400px");
  TestingUtils.testGridTemplateColumnsRows("grid", "minmax(100px, 300px) 1fr", "minmax(100px, 200px) 1fr", "300px 500px", "200px 400px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "repeat(4, 1fr)", "repeat(4, 1fr)", ["200px 200px 200px 200px", "repeat(4, 200px)"], ["150px 150px 150px 150px", "repeat(4, 150px)"]);
  TestingUtils.testGridTemplateColumnsRows("grid", "repeat(4, 1fr)", "repeat(4, 1fr)", ["200px 200px 200px 200px", "repeat(4, 200px)"], ["150px 150px 150px 150px", "repeat(4, 150px)"]);
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "[a] repeat(4, [b] 1fr [c]) [d]", "[z] repeat(4, [y] 1fr) [x]", ["[a b] 200px [c b] 200px [c b] 200px [c b] 200px [c d]", "[a] repeat(4, [b] 200px [c]) [d]"], ["[z y] 150px [y] 150px [y] 150px [y] 150px [x]", "[z] repeat(4, [y] 150px) [x]"]);
  TestingUtils.testGridTemplateColumnsRows("grid", "[a] repeat(4, [b] 1fr [c]) [d]", "[z] repeat(4, [y] 1fr) [x]", ["[a b] 200px [c b] 200px [c b] 200px [c b] 200px [c d]", "[a] repeat(4, [b] 200px [c]) [d]"], ["[z y] 150px [y] 150px [y] 150px [y] 150px [x]", "[z] repeat(4, [y] 150px) [x]"]);

  // Reset values.
  document.getElementById("emptyGrid").style.gridTemplateColumns = "";
  document.getElementById("emptyGrid").style.gridTemplateRows = "";
  document.getElementById("grid").style.gridTemplateColumns = "";
  document.getElementById("grid").style.gridTemplateRows = "";

  // Wrong values.
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "fr", "fr", "none", "none");
  TestingUtils.testGridTemplateColumnsRows("grid", "fr", "fr", "90px", "10px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "1 fr", "1 fr", "none", "none");
  TestingUtils.testGridTemplateColumnsRows("grid", "1 fr", "1 fr", "90px", "10px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "1free-space", "1free-space", "none", "none");
  TestingUtils.testGridTemplateColumnsRows("grid", "1free-space", "1free-space", "90px", "10px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "-2fr", "-2fr", "none", "none");
  TestingUtils.testGridTemplateColumnsRows("grid", "-2fr", "-2fr", "90px", "10px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "0,5fr", "0,5fr", "none", "none");
  TestingUtils.testGridTemplateColumnsRows("grid", "0,5fr", "0,5fr", "90px", "10px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "calc(1fr + 100px)", "calc(1fr + 100px)", "none", "none");
  TestingUtils.testGridTemplateColumnsRows("grid", "calc(1fr + 100px)", "calc(1fr + 100px)", "90px", "10px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "(1fr) auto", "(1fr) auto", "none", "none");
  TestingUtils.testGridTemplateColumnsRows("grid", "(1fr) auto", "(1fr) auto", "90px", "10px");
  TestingUtils.testGridTemplateColumnsRows("emptyGrid", "minmax(1fr, 1000px)", "minmax(1fr, 700px)", "none", "none");
  TestingUtils.testGridTemplateColumnsRows("grid", "minmax(1fr, 1000px)", "minmax(1fr, 700px)", "90px", "10px");
  done();
});
</script>