@polymer/polymer
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The Polymer library makes it easy to create your own web components. Give your element some markup and properties, and then use it on a site. Polymer provides features like dynamic templates and data binding to reduce the amount of boilerplate you need to
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HTML
<!--
@license
Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-->
<html>
<head>
<meta charset="utf-8">
<script src="../../../webcomponentsjs/webcomponents-lite.js"></script>
<script src="../../../web-component-tester/browser.js"></script>
<title>css-parse</title>
<link rel="import" href="../../polymer.html">
</head>
<body>
<style id="test">
:host {
background: red;
}
.foo .bar .baz, zonk[happy]:focus {
font-family: sans-serif;
font-size: 15px;
}
@-webkit-keyframes fill-unfill-rotate {
12.5% { transform: rotate(135deg); }
25% { transform: rotate(270deg); }
37.5% { transform: rotate(405deg); }
50% { transform: rotate(540deg); }
62.5% { transform: rotate(675deg); }
75% { transform: rotate(810deg); }
87.5% { transform: rotate(945deg); }
to { transform: rotate(1080deg); }
}
@media (max-width: 400px) {
div {
margin-left: 0 ;
}
}
</style>
<style id="test-ignore">
@import '';
/* comment */
.stuff {
background: red;
}
/* comment */
/*
This is a multi-line comment
*/
/*.aclassThatShouldBeIgnored {
someProperty: thatMustNotShowUp
}*/
</style>
<style id="short-escape-sequence">
.\33 d-model {
border-top: 3px solid red;
}
.\a33 d-model {
border-top: 3px solid red;
}
.\b333 d-model {
border-top: 3px solid red;
}
.\c3333 d-model {
border-top: 3px solid red;
}
.\d33333 d-model {
border-top: 3px solid red;
}
.\e33333d-model {
border-top: 3px solid red;
}
</style>
<style id="multiple-spaces">
.foo .bar {}
.foo .bar {}
.foo
.bar {}
</style>
<script>
function sanitizeCss(text) {
return text.replace(/[\s]+/g, ' ').trim();
}
suite('css-parse', function() {
var css, s, tree;
setup(function() {
css = Polymer.CssParse;
s = document.querySelector('style#test');
tree = css.parse(s.textContent);
});
test('css rules parse', function() {
assert.equal(tree.rules.length, 4, 'unexpected number of rules');
assert.equal(tree.rules[2].rules.length, 8, 'unexpected number of rules in keyframes');
assert.equal(tree.rules[3].rules.length, 1, 'unexpected number of rules in @media');
});
test('rule selectors parse', function() {
assert.equal(tree.rules[0].selector, ':host', 'unexpected selector');
assert.equal(tree.rules[2].selector, '@-webkit-keyframes fill-unfill-rotate', 'unexpected selector in keyframes');
assert.equal(tree.rules[3].selector, '@media (max-width: 400px)', 'unexpected selector in @media');
});
test('rule cssText parse', function() {
assert.equal(tree.rules[0].cssText, 'background: red;', 'unexpected cssText');
assert.match(tree.rules[2].cssText, /^12.5%/, 'unexpected cssText in keyframes');
assert.equal(tree.rules[2].rules[2].cssText, 'transform: rotate(405deg);', 'unexpected cssText in keyframes');
assert.match(tree.rules[3].cssText, /^div/, 'unexpected cssText in @media');
assert.equal(tree.rules[3].rules[0].cssText, 'margin-left: 0 !important;', 'unexpected cssText in @media');
});
test('rule types', function() {
assert.equal(tree.rules[0].type, css.types.STYLE_RULE);
assert.equal(tree.rules[1].type, css.types.STYLE_RULE);
assert.equal(tree.rules[2].type, css.types.KEYFRAMES_RULE);
assert.equal(tree.rules[3].type, css.types.MEDIA_RULE);
assert.equal(tree.rules[3].rules[0].type, css.types.STYLE_RULE);
});
test('rules stringify', function() {
var orig = sanitizeCss(s.textContent);
var result = sanitizeCss(css.stringify(tree));
assert.equal(result, orig, 'unexpected stringified output');
});
test('parse correctly ignores @import and comments', function() {
var s2 = document.querySelector('#test-ignore');
var t = css.parse(s2.textContent);
assert.equal(t.rules[0].selector, '.stuff', 'unexpected rule selector');
assert.equal(t.rules[0].cssText, 'background: red;', 'unexpected rule cssText');
var result = sanitizeCss(css.stringify(t));
assert.equal(result, '.stuff { background: red; }', 'unexpected stringified output');
});
test('short escape sequences', function() {
var s3 = document.querySelector('#short-escape-sequence');
var t = css.parse(s3.textContent);
assert.equal(t.rules[0].selector, '.\\000033d-model');
assert.equal(t.rules[1].selector, '.\\000a33d-model');
assert.equal(t.rules[2].selector, '.\\00b333d-model');
assert.equal(t.rules[3].selector, '.\\0c3333d-model');
assert.equal(t.rules[4].selector, '.\\d33333d-model');
assert.equal(t.rules[5].selector, '.\\e33333d-model');
});
test('multiple consequent spaces in CSS selector', function() {
var s4 = document.querySelector('#multiple-spaces');
var t = css.parse(s4.textContent);
assert.equal(t.rules[0].selector, '.foo .bar');
assert.equal(t.rules[1].selector, '.foo .bar');
assert.equal(t.rules[2].selector, '.foo .bar');
});
});
</script>
</body>
</html>