lineHeight.html - mozsearch

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This WPT test may be referenced by the following Test IDs:
- /web-animations/responsive/lineHeight.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

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

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

<div id='container'>

<div id='element'></div>

</div>

<script>

var element = document.getElementById('element');

var container = document.getElementById('container');

test(function() {

    element.style.fontSize = '10px';

    var player = element.animate([{lineHeight: '3em'}, {lineHeight: '5em'}], 10);

    player.pause();

    player.currentTime = 5;

    element.style.fontSize = '20px';

    assert_equals(getComputedStyle(element).lineHeight, '80px');

}, 'lineHeight responsive to style changes');

test(function() {

    element.style.fontSize = '10px';

    var player = element.animate([{lineHeight: '40px'}, {lineHeight: 'calc(40px - 2em)'}], 10);

    player.pause();

    player.currentTime = 5;

    element.style.fontSize = '40px';

    assert_equals(getComputedStyle(element).lineHeight, '20px');

    player.currentTime = 7.5;

    assert_equals(getComputedStyle(element).lineHeight, '10px');

}, 'lineHeight clamped to 0px on keyframes');

test(function() {

    container.style.lineHeight = 'normal';

    var player = element.animate([{lineHeight: 'inherit'}, {lineHeight: '20px'}], 4000);

    player.pause();

    player.currentTime = 1000;

    assert_equals(getComputedStyle(element).lineHeight, 'normal');

    container.style.lineHeight = '100px';

    assert_equals(getComputedStyle(element).lineHeight, '80px');

    container.style.lineHeight = 'normal';

    assert_equals(getComputedStyle(element).lineHeight, 'normal');

}, 'lineHeight responsive to inherited changes from keyword');

test(function() {

    container.style.fontSize = '10px';

    container.style.lineHeight = '1.0';

    const expected = getComputedStyle(container).lineHeight;

    var player = element.animate([{lineHeight: 'inherit'}, {lineHeight: '20px'}], 4000);

    player.pause();

    player.currentTime = 1000;

    getComputedStyle(element).lineHeight;

    container.style.lineHeight = '100px';

    assert_equals(getComputedStyle(element).lineHeight, '80px');

}, 'lineHeight responsive to inherited changes from number');

test(function() {

    container.style.fontSize = '10px';

    container.style.lineHeight = '1';

    var player = element.animate([{lineHeight: 'inherit'}, {lineHeight: '2'}], 4000);

    player.pause();

    player.currentTime = 1000;

    const expected = getComputedStyle(element).lineHeight;

    container.style.lineHeight = '97px';

    assert_equals(getComputedStyle(element).lineHeight, '97px');

    container.style.lineHeight = '1';

    assert_equals(getComputedStyle(element).lineHeight, expected);

}, 'lineHeight responsive to inherited changes from length');

</script>