chromium/third_party/blink/web_tests/fast/css-grid-layout/grid-auto-flow-resolution.html

<!DOCTYPE html>
<html>
<link href="resources/grid.css" rel="stylesheet">
<link href="resources/grid-alignment.css" rel="stylesheet">
<style>
.smallGrid {
    grid-template-columns: 50px 100px;
    grid-template-rows: 50px 100px;
}

.bigGrid {
    grid-template-columns: 50px 100px 150px 200px;
    grid-template-rows: 50px 100px 150px 200px;
}

.overflowingRowFirstColumn {
    grid-row: auto / 10;
    grid-column: 1;
}

.secondRowOverflowingColumn {
    grid-row: 2;
    grid-column: auto / 8;
}

.negativeOverflowingRowFirstColumn {
    grid-row: auto / -10;
    grid-column: 1;
}

.secondRowNegativeOverflowingColumn {
    grid-row: 2;
    grid-column: auto / -8;
}

.unconstrainedContainer {
    /* For accurate x / y offset. */
    position: relative;
}
</style>
<script src="../../resources/check-layout.js"></script>
<body onload="checkLayout('.grid')">

<p>This test checks that the tracks' auto positions are properly resolved on a static grid.</p>

<div class="unconstrainedContainer">
    <div class="grid smallGrid gridAutoFlowStack justifyContentStart" id="gridAutoFlowStack">
        <div class="sizedToGridArea autoRowAutoColumn" data-offset-x="0" data-offset-y="0" data-expected-width="50" data-expected-height="50">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea secondRowAutoColumn" data-offset-x="0" data-offset-y="50" data-expected-width="50" data-expected-height="100">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea autoRowSecondColumn" data-offset-x="50" data-offset-y="0" data-expected-width="100" data-expected-height="50">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea secondRowSecondColumn" data-offset-x="50" data-offset-y="50" data-expected-width="100" data-expected-height="100">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea thirdRowAutoColumn" data-offset-x="0" data-offset-y="150" data-expected-width="50" data-expected-height="30">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea autoRowThirdColumn" data-offset-x="150" data-offset-y="0" data-expected-width="170" data-expected-height="50">XXXXX XXXXX XXXXX</div>
    </div>
</div>

<div class="unconstrainedContainer">
    <div class="grid bigGrid gridAutoFlowColumnDense justifyContentStart">
        <div class="sizedToGridArea secondRowSecondColumn" data-offset-x="50" data-offset-y="50" data-expected-width="100" data-expected-height="100">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea firstRowSecondColumn" data-offset-x="50" data-offset-y="0" data-expected-width="100" data-expected-height="50">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea secondRowFirstColumn" data-offset-x="0" data-offset-y="50" data-expected-width="50" data-expected-height="100">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea firstRowFirstColumn" data-offset-x="0" data-offset-y="0" data-expected-width="50" data-expected-height="50">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea autoRowAutoColumn" data-offset-x="0" data-offset-y="150" data-expected-width="50" data-expected-height="150">XXXXX XXXXX XXXXX</div>
    </div>
</div>

<div class="unconstrainedContainer">
    <div class="grid bigGrid gridAutoFlowRowDense justifyContentStart">
        <div class="sizedToGridArea firstRowFirstColumn" data-offset-x="0" data-offset-y="0" data-expected-width="50" data-expected-height="50">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea firstRowSecondColumn" data-offset-x="50" data-offset-y="0" data-expected-width="100" data-expected-height="50">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea secondRowSecondColumn" data-offset-x="50" data-offset-y="50" data-expected-width="100" data-expected-height="100">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea secondRowFirstColumn" data-offset-x="0" data-offset-y="50" data-expected-width="50" data-expected-height="100">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea autoRowAutoColumn" data-offset-x="150" data-offset-y="0" data-expected-width="150" data-expected-height="50">XXXXX XXXXX XXXXX</div>
    </div>
</div>

<div class="unconstrainedContainer">
    <div class="grid bigGrid gridAutoFlowColumnDense justifyContentStart">
        <div class="sizedToGridArea autoRowFirstColumn" data-offset-x="0" data-offset-y="0" data-expected-width="50" data-expected-height="50">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea autoRowSecondColumn" data-offset-x="50" data-offset-y="0" data-expected-width="100" data-expected-height="50">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea secondRowAutoColumn" data-offset-x="0" data-offset-y="50" data-expected-width="50" data-expected-height="100">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea firstRowAutoColumn" data-offset-x="150" data-offset-y="0" data-expected-width="150" data-expected-height="50">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea autoRowAutoColumn" data-offset-x="0" data-offset-y="150" data-expected-width="50" data-expected-height="150">XXXXX XXXXX XXXXX</div>
    </div>
</div>

<div class="unconstrainedContainer">
    <div class="grid bigGrid gridAutoFlowRowDense justifyContentStart">
        <div class="sizedToGridArea autoRowFirstColumn" data-offset-x="0" data-offset-y="150" data-expected-width="50" data-expected-height="150">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea firstRowSecondColumn" data-offset-x="50" data-offset-y="0" data-expected-width="100" data-expected-height="50">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea secondRowAutoColumn" data-offset-x="0" data-offset-y="50" data-expected-width="50" data-expected-height="100">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea firstRowAutoColumn" data-offset-x="0" data-offset-y="0" data-expected-width="50" data-expected-height="50">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea autoRowAutoColumn" data-offset-x="150" data-offset-y="0" data-expected-width="150" data-expected-height="50">XXXXX XXXXX XXXXX</div>
    </div>
</div>

<!-- Using some 2 positions non-spanning fixed grid-{row|column} -->
<div class="unconstrainedContainer">
    <div class="grid bigGrid gridAutoFlowColumnDense justifyContentStart">
        <div class="sizedToGridArea autoLastRowAutoLastColumn" data-offset-x="300" data-offset-y="300" data-expected-width="200" data-expected-height="200">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea firstAutoRowSecondAutoColumn" data-offset-x="50" data-offset-y="0" data-expected-width="100" data-expected-height="50">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea secondRowAutoColumn" data-offset-x="0" data-offset-y="50" data-expected-width="50" data-expected-height="100">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea firstRowFirstColumn" data-offset-x="0" data-offset-y="0" data-expected-width="50" data-expected-height="50">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea autoRowAutoColumn" data-offset-x="0" data-offset-y="150" data-expected-width="50" data-expected-height="150">XXXXX XXXXX XXXXX</div>
    </div>
</div>

<div class="unconstrainedContainer">
    <div class="grid bigGrid gridAutoFlowRowDense justifyContentStart">
        <div class="sizedToGridArea autoLastRowAutoLastColumn" data-offset-x="300" data-offset-y="300" data-expected-width="200" data-expected-height="200">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea firstAutoRowSecondAutoColumn" data-offset-x="50" data-offset-y="0" data-expected-width="100" data-expected-height="50">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea secondRowAutoColumn" data-offset-x="0" data-offset-y="50" data-expected-width="50" data-expected-height="100">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea firstRowFirstColumn" data-offset-x="0" data-offset-y="0" data-expected-width="50" data-expected-height="50">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea autoRowAutoColumn" data-offset-x="150" data-offset-y="0" data-expected-width="150" data-expected-height="50">XXXXX XXXXX XXXXX</div>
    </div>
</div>

<div class="unconstrainedContainer">
    <div class="grid bigGrid gridAutoFlowColumnDense justifyContentStart">
        <div class="sizedToGridArea overflowingRowFirstColumn" data-offset-x="0" data-offset-y="500" data-expected-width="50" data-expected-height="30">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea secondRowOverflowingColumn" data-offset-x="500" data-offset-y="50" data-expected-width="170" data-expected-height="100">XXXXX XXXXX XXXXX</div>
    </div>
</div>

<div class="unconstrainedContainer">
    <div class="grid bigGrid gridAutoFlowRowDense justifyContentStart">
        <div class="sizedToGridArea overflowingRowFirstColumn" data-offset-x="0" data-offset-y="500" data-expected-width="50" data-expected-height="30">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea secondRowOverflowingColumn" data-offset-x="500" data-offset-y="50" data-expected-width="170" data-expected-height="100">XXXXX XXXXX XXXXX</div>
    </div>
</div>

<div class="unconstrainedContainer">
    <div class="grid bigGrid gridAutoFlowColumnDense justifyContentStart">
        <div class="sizedToGridArea negativeOverflowingRowFirstColumn" data-offset-x="170" data-offset-y="0" data-expected-width="50" data-expected-height="30">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea secondRowNegativeOverflowingColumn" data-offset-x="0" data-offset-y="80" data-expected-width="170" data-expected-height="100">XXXXX XXXXX XXXXX</div>
    </div>
</div>

<div class="unconstrainedContainer">
    <div class="grid bigGrid gridAutoFlowRowDense justifyContentStart">
        <div class="sizedToGridArea negativeOverflowingRowFirstColumn" data-offset-x="170" data-offset-y="0" data-expected-width="50" data-expected-height="30">XXXXX XXXXX XXXXX</div>
        <div class="sizedToGridArea secondRowNegativeOverflowingColumn" data-offset-x="0" data-offset-y="80" data-expected-width="170" data-expected-height="100">XXXXX XXXXX XXXXX</div>
    </div>
</div>

</body>
</html>