File: dashed-function-parsing.html

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<!DOCTYPE html>
<title>Custom Functions: &lt;dashed-function&gt; parsing</title>
<link rel="help" href="https://drafts.csswg.org/css-mixins-1/#function-rule">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/parsing-testcommon.js"></script>
<script>
// Note: 'top' chosen arbitrarily.

test_valid_value('top', '--func()');
test_valid_value('top', '--func(auto)');
test_valid_value('top', '--func(100px)');
test_valid_value('top', '--func(#fff)');
test_valid_value('top', '--func(auto, 100px, #fff)');
test_valid_value('top', '--func(auto ,100px ,#fff)');
test_valid_value('top', '--func(auto , 100px , #fff)');
test_valid_value('top', '--func(auto,100px,#fff)');
test_valid_value('top', '--func("thing")');
test_valid_value('top', '--func(var(--x))');
test_valid_value('top', '--func(var(--x, auto))');
test_valid_value('top', '--func(--bar(), --baz(--fez()))');

// Certain tokens are forbidden in <declaration-value>.
// https://drafts.csswg.org/css-syntax/#typedef-declaration-value
test_invalid_value('top', '--func(!)');
test_invalid_value('top', '--func( !)');
test_invalid_value('top', '--func( ! )');
test_invalid_value('top', '--func(! )');
test_invalid_value('top', '--func(;)');
test_invalid_value('top', '--func(})');
test_invalid_value('top', '--func(])');
// Invalid escape causes <bad-url-token>:
// https://drafts.csswg.org/css-syntax/#starts-with-a-valid-escape
test_invalid_value('top', '--func(url(\\\n))');
// Empty arguments are not allowed by <declaration-value>#.
test_invalid_value('top', '--func(asdf,)');
test_invalid_value('top', '--func(,)');
test_invalid_value('top', '--func(, )');
test_invalid_value('top', '--func( ,)');
test_invalid_value('top', '--func( , )');
test_invalid_value('top', '--func(a,,b)');
test_invalid_value('top', '--func(a, ,b)');

// Tests related to comma-containing productions:
// https://drafts.csswg.org/css-values-5/#component-function-commas
test_valid_value('top', '--func({1}, 2)');
test_valid_value('top', '--func({ 1}, 2)');
test_valid_value('top', '--func({1 }, 2)');
test_valid_value('top', '--func({ 1 }, 2)');
test_valid_value('top', '--func({1},{2})');
test_valid_value('top', '--func({1, 2, 3},{4})');
test_valid_value('top', '--func({,},{4})');
test_valid_value('top', '--func({{}},{4})');
test_valid_value('top', '--func({[]},{4})');
// A non-{}-wrapped argument may not contain {}.
test_invalid_value('top', '--func(123 {})');
test_invalid_value('top', '--func(1{})');
test_invalid_value('top', '--func({}1)');
test_invalid_value('top', '--func( {}1)');
test_invalid_value('top', '--func({}1 )');
test_invalid_value('top', '--func({} 1)');
test_invalid_value('top', '--func(1, 2{})');
test_invalid_value('top', '--func(1,2{})');
test_invalid_value('top', '--func(1,2{} )');
test_invalid_value('top', '--func(1, {}2)');
// Empty values are not allowed (the {}-wrapper not being part of the value):
test_invalid_value('top', '--func({})');
test_invalid_value('top', '--func(1, {})');
test_invalid_value('top', '--func(1, { })');
</script>