flex-wrap-column-grow.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-flexbox/flex-wrap-column-grow.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<link rel="help" href="https://drafts.csswg.org/css-flexbox-1/#flex-lines">

<link rel="stylesheet" type="text/css" href="/fonts/ahem.css">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<style>

.flex {

    display: flex;

    flex-direction: column;

    flex-wrap: wrap;

    font: 20px/1 Ahem;

</style>

<!-- Test 1: single grow item fills to container height -->

<div class="flex" style="max-height: 100px; width: 100px">

    <div id="t1" style="width: 50px; height: 50px; flex-grow: 1"></div>

    <div style="width: 50px; height: 100px"></div>

</div>

<!-- Test 2: max-height on item is respected -->

<div class="flex" style="max-height: 100px; width: 150px">

    <div id="t2a" style="width: 50px; height: 20px; flex-grow: 1; max-height: 40px"></div>

    <div id="t2b" style="width: 50px; height: 30px; flex-grow: 1"></div>

    <div style="width: 50px; height: 100px"></div>

</div>

<!-- Test 3: proportional grow -->

<div class="flex" style="max-height: 100px; width: 150px">

    <div id="t3a" style="width: 50px; height: 10px; flex-grow: 2"></div>

    <div id="t3b" style="width: 50px; height: 10px; flex-grow: 1"></div>

    <div style="width: 50px; height: 100px"></div>

</div>

<script>

test(function() {

    assert_equals(document.getElementById("t1").offsetHeight, 100,

        "Item should grow from 50px to 100px to fill the line");

}, "Single flex-grow item fills multi-line column container height");

test(function() {

    assert_equals(document.getElementById("t2a").offsetHeight, 40,

        "Item should grow but be clamped by max-height: 40px");

    assert_equals(document.getElementById("t2b").offsetHeight, 60,

        "Remaining space should go to the other grow item");

}, "flex-grow respects max-height on individual items");

test(function() {

    var a = document.getElementById("t3a").offsetHeight;

    var b = document.getElementById("t3b").offsetHeight;

    assert_equals(a + b, 100, "Items should fill 100px total");

    assert_greater_than(a, b, "Item with flex-grow: 2 should be taller");

}, "flex-grow distributes space proportionally");

</script>