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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-flexbox/flex-one-sets-flex-basis-to-zero-px.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html>
<title>CSS Flexbox: flex-basis with zero pixel</title>
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<link href="support/flexbox.css" rel="stylesheet">
<meta name="assert" content="This test ensures that setting 'flex-basis' property to
zero pixel or percentage in combination with one value of both 'flex-grow' and 'flex-shrink'
and 'writing-mode' value works properly.">
<style>
.flexbox > div {
font: 14px/1 Ahem;
min-width: 0;
min-height: 0;
}
.flex-zero {
flex: 0;
}
.flex-zero-one-zero-percent {
flex: 0 1 0%;
}
.flex-zero-one-zero-px {
flex: 0 1 0px;
}
.flex-half {
flex: 0.5;
}
.flex-half-one-zero-percent {
flex: 0.5 1 0%;
}
.flex-half-one-zero-px {
flex: 0.5 1 0px;
}
.flex-one-one-zero-percent {
flex: 1 1 0%;
}
.flex-one-one-zero-px {
flex: 1 1 0px;
}
.vertical {
writing-mode: vertical-rl;
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<body onload="document.fonts.ready.then(() => { checkLayout('.flexbox'); })">
<div id=log></div>
<div class="flexbox column">
<div class="flex-zero" data-expected-height="14">Flex item with flex: 0</div>
</div>
<div class="flexbox column">
<div class="flex-zero-one-zero-percent" data-expected-height="14">Flex item with flex: 0 1 0%</div>
</div>
<div class="flexbox column">
<div class="flex-zero-one-zero-px" data-expected-height="0">Flex item with flex: 0 1 0px</div>
</div>
<div class="flexbox column">
<div class="flex-half" data-expected-height="14">Flex item with flex: 0.5</div>
</div>
<div class="flexbox column">
<div class="flex-half-one-zero-percent" data-expected-height="14">Flex item with flex: 0.5 1 0%</div>
</div>
<!-- Following comment follows current spec to the letter, but it is not web
compatible. The expectation is for what everyone is shipping. -->
<!-- A flex-grow of 0 would size the container to the flex base size of the item (0px),
and a flex-grow of 1 would size it to the max-content contribution of the item (14px).
Therefore, a flew-grow of 0.5 sizes the container to the average, 7px.
And then the item grows to fill half of that, 3.5px.
Note that Gecko, Blink and WebKit use the flex-basis instead. -->
<div class="flexbox column">
<div class="flex-half-one-zero-px" data-expected-height="0">Flex item with flex: 0.5 1 0px</div>
</div>
<div class="flexbox column">
<div class="flex-one" data-expected-height="14">Flex item with flex: 1</div>
</div>
<div class="flexbox column">
<div class="flex-one-one-zero-percent" data-expected-height="14">Flex item with flex: 1 1 0%</div>
</div>
<!-- Following comment follows current spec to the letter, but it is not web
compatible. The expectation is for what everyone is shipping. -->
<!-- flex-grow is >= 1, so the flex container is sized to the max-content contribution of the item.
Note that Gecko, Blink and WebKit use the flex-basis instead. -->
<div class="flexbox column">
<div class="flex-one-one-zero-px" data-expected-height="0">Flex item with flex: 1 1 0px</div>
</div>
<div class="flexbox column vertical">
<div class="flex-zero" data-expected-width="14">Flex item with flex: 0</div>
</div>
<div class="flexbox column vertical">
<div class="flex-zero-one-zero-percent" data-expected-width="14">Flex item with flex: 0 1 0%</div>
</div>
<div class="flexbox column vertical">
<div class="flex-zero-one-zero-px" data-expected-width="0">Flex item with flex: 0 1 0px</div>
</div>
<div class="flexbox column vertical">
<div class="flex-half" data-expected-width="14">Flex item with flex: 0.5</div>
</div>
<div class="flexbox column vertical">
<div class="flex-half-one-zero-percent" data-expected-width="14">Flex item with flex: 0.5 1 0%</div>
</div>
<!-- Following comment follows current spec to the letter, but it is not web
compatible. The expectation is for what everyone is shipping. -->
<!-- A flex-grow of 0 would size the container to the flex base size of the item (0px),
and a flex-grow of 1 would size it to the max-content contribution of the item (14px).
Therefore, a flew-grow of 0.5 sizes the container to the average, 7px.
And then the item grows to fill half of that, 3.5px.
Note that Gecko, Blink and WebKit use the flex-basis instead. -->
<div class="flexbox column vertical">
<div class="flex-half-one-zero-px" data-expected-width="0">Flex item with flex: 0.5 1 0px</div>
</div>
<div class="flexbox column vertical">
<div class="flex-one" data-expected-width="14">Flex item with flex: 1</div>
</div>
<div class="flexbox column vertical">
<div class="flex-one-one-zero-percent" data-expected-width="14">Flex item with flex: 1 1 0%</div>
</div>
<!-- Following comment follows current spec to the letter, but it is not web
compatible. The expectation is for what everyone is shipping. -->
<!-- flex-grow is >= 1, so the flex container is sized to the max-content contribution of the item.
Note that Gecko, Blink and WebKit use the flex-basis instead. -->
<div class="flexbox column vertical">
<div class="flex-one-one-zero-px" data-expected-width="0">Flex item with flex: 1 1 0px</div>
</div>
</body>
</html>