register-property-syntax-parsing.html

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<meta charset="utf-8">

<link rel="help" href="https://drafts.css-houdini.org/css-properties-values-api/#dom-css-registerproperty" />

<link rel="help" href="https://drafts.css-houdini.org/css-properties-values-api/#supported-syntax-strings" />

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

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

<script>

test_count = 0;

function assert_valid(syntax, initialValue) {

    // No actual assertions, this just shouldn't throw

    test(function() {

        var name = '--syntax-test-' + (test_count++);

        CSS.registerProperty({name: name, syntax: syntax, initialValue: initialValue, inherits: false});

    }, "syntax:'" + syntax + "', initialValue:'" + initialValue + "' is valid");

function assert_invalid(syntax, initialValue) {

    test(function(){

        var name = '--syntax-test-' + (test_count++);

        assert_throws_dom("SyntaxError",

            () => CSS.registerProperty({name: name, syntax: syntax, initialValue: initialValue, inherits: false}));

    }, "syntax:'" + syntax + "', initialValue:'" + initialValue + "' is invalid");

assert_valid("*", "a");

assert_valid(" * ", "b");

assert_valid("<length>", "2px");

assert_valid(" <number>", "5");

assert_valid("<percentage> ", "10%");

assert_valid("<color>+", "red");

assert_valid(" <length>+ | <percentage>", "2px 8px");

assert_valid(" <length>+ | <color>#", "red, blue");

assert_valid("<length>|<percentage>|<length-percentage>", "2px"); // Valid but silly

assert_valid("<color> | <image> | <url> | <integer> | <angle>", "red");

assert_valid("<time> | <resolution> | <transform-list> | <custom-ident>", "red");

assert_valid("\t<color>\n|   foo", "foo");

assert_valid("*", ":> hello");

assert_valid("*", "([ brackets ]) { yay (??)}");

assert_valid("*", "yep 'this is valid too'");

assert_valid("*", "unmatched opening bracket is valid :(");

assert_valid("*", '"');

assert_valid("*", "default");

assert_valid("<length>", "0");

assert_valid("<length>", "10px /*:)*/");

assert_valid("<length>", " calc(-2px)");

assert_valid("<length>", "calc(2px*4 + 10px)");

assert_valid("<length>", "7.1e-4cm");

assert_valid("<length>", "calc(7in - 12px)");

assert_valid("<length>+", "2px 7px calc(8px)");

assert_valid("<length>#", "2px, 7px, calc(8px)");

assert_valid("<percentage>", "-9.3e3%");

assert_valid("<length-percentage>", "-54%");

assert_valid("<length-percentage>", "0");

assert_valid("<length-percentage>", "calc(-11px + 10.4%)");

assert_valid("<length>", "10vmin");

assert_valid("<percentage> | <length>+", "calc(100vh - 10px) 30px");

assert_valid("<number>", "-109");

assert_valid("<number>", "2.3e4");

assert_valid("<number>", "calc(1 / 2)");

assert_valid("<integer>", "-109");

assert_valid("<integer>", "19");

assert_valid("<integer>", "calc(1)");

assert_valid("<integer>", "calc(1 + 2)");

assert_valid("<integer>", "calc(3.1415)");

assert_valid("<integer>", "calc(3.1415 + 3.1415)");

assert_valid("<angle>", "10deg");

assert_valid("<angle>", "20.5rad");

assert_valid("<angle>", "calc(50grad + 3.14159rad)");

assert_valid("<time>", "2s");

assert_valid("<time>", "calc(2s - 9ms)");

assert_valid("<resolution>", "10dpi");

assert_valid("<resolution>", "3dPpX");

assert_valid("<transform-function>", "translateX(2px)");

assert_valid("<transform-function>|<integer>", "5");

assert_valid("<transform-function>|<integer>", "scale(2)");

assert_valid("<transform-function>+", "translateX(2px) rotate(42deg)");

assert_valid("<transform-list>", "scale(2)");

assert_valid("<transform-list>", "translateX(2px) rotate(20deg)");

// <string> is accepted in https://github.com/w3c/css-houdini-drafts/issues/1103

assert_valid("<string>", "'foo bar'");

assert_valid("<string>", " 'foo bar' ");

assert_valid("<string>", "'foo bar");

assert_valid("<string>", `'"foo" bar'`);

assert_valid("<string>", '"bar baz"');

assert_valid("<string>", `"bar 'baz'"`);

assert_valid("<string>", `"bar 'baz'`);

assert_valid("<string>+", "'foo' 'bar'");

assert_valid("<string>#", "'foo', 'bar'");

assert_valid("<string>+ | <string>#", "'foo' 'bar'");

assert_valid("<string>+ | <string>#", " 'foo' 'bar'");

assert_valid("<string>+ | <string>#", `'foo' "bar"`);

assert_valid("<string>+ | <string>#", `'foo' "bar`);

assert_valid("<string># | <string>+", "'foo', 'bar'");

assert_valid("<string># | <string>+", "'foo', 'bar' ");

assert_valid("<string># | <string>+", `"foo", 'bar'`);

assert_valid("<string># | <string>+", `"foo", 'bar`);

assert_valid("<color>", "rgb(12, 34, 56)");

assert_valid("<color>", "lightgoldenrodyellow");

assert_valid("<image>", "url(a)");

assert_valid("<image>", "linear-gradient(yellow, blue)");

assert_valid("<url>", "url(a)");

assert_valid("<color>+", "yellow blue");

assert_valid("<color>+", "yellow blue ");

assert_valid("<color>+ | <color>", "yellow blue");

assert_valid("<color> | <color>+", "yellow blue");

assert_valid("<color># | <color>", "yellow, blue");

assert_valid("<color> | <color>#", "yellow, blue");

assert_valid("<color># | <color>+", "yellow blue");

assert_valid("<color>+ | <color>#", "yellow, blue");

assert_valid("<color>+ | yellow", "yellow blue");

assert_valid("yellow", "yellow");

assert_valid("yellow | <color>+", "yellow blue");

assert_valid("<color># | yellow", "yellow, blue");

assert_valid("yellow | <color>#", "yellow, blue");

assert_valid("<transform-list> | <transform-function> ", "scale(2) rotate(90deg)");

assert_valid("<transform-function> | <transform-list>", "scale(2) rotate(90deg)");

assert_valid("<transform-list> | <transform-function>+ ", "scale(2) rotate(90deg)");

assert_valid("<transform-function>+ | <transform-list>", "scale(2) rotate(90deg)");

assert_valid("<transform-list> | <transform-function># ", "scale(2) rotate(90deg)");

assert_valid("<transform-function># | <transform-list>", "scale(2) rotate(90deg)");

assert_valid("<transform-list> | <transform-function># ", "scale(2), rotate(90deg)");

assert_valid("<transform-function># | <transform-list>", "scale(2), rotate(90deg)");

assert_valid("<transform-list>", "scale(2) rotate(90deg) ");

assert_valid("<integer>+ | <percentage>+ | <length>+ ", "1");

assert_valid("<integer>+ | <percentage>+ | <length>+ ", "1 1");

assert_valid("<integer>+ | <percentage>+ | <length>+ ", "1%");

assert_valid("<integer>+ | <percentage>+ | <length>+ ", "1% 1%");

assert_valid("<integer>+ | <percentage>+ | <length>+ ", "1px");

assert_valid("<integer>+ | <percentage>+ | <length>+ ", "1px 1px");

assert_valid("banana", "banana");

assert_valid("bAnAnA", "bAnAnA");

assert_valid("ba-na-nya", "ba-na-nya");

assert_valid("banana", "banan\\61");

assert_valid("banan\\61", "banana");

assert_valid("<custom-ident>", "banan\\61");

assert_valid("big | bigger | BIGGER", "bigger");

assert_valid("foo+|bar", "foo foo foo");

assert_valid("banana\t", "banana");

assert_valid("\nbanana\r\n", "banana");

assert_valid("ba\f\n|\tna\r|nya", "nya");

assert_valid(null, "null");

assert_valid(undefined, "undefined");

assert_valid(["array"], "array");

assert_valid("\\1F914", "🤔");

assert_valid("hmm\\1F914", "hmm🤔");

assert_valid("\\1F914hmm", "🤔hmm");

assert_valid("\\1F914 hmm", "🤔hmm");

assert_valid("\\1F914\\1F914", "🤔🤔");

// Invalid syntax

assert_invalid("<color>#", "yellow blue");

assert_invalid("banana,nya", "banana");

assert_invalid("<\\6c ength>", "10px");

assert_invalid("<banana>", "banana");

assert_invalid("<Number>", "10");

assert_invalid("<length", "10px");

assert_invalid("<LENGTH>", "10px");

assert_invalid("< length>", "10px");

assert_invalid("<length >", "10px");

assert_invalid("<length> +", "10px");

assert_invalid("<transform-list>+", "scale(2)");

assert_invalid("<transform-list>#", "scale(2)");

assert_invalid("<length>++", "10px");

assert_invalid("<length>##", "10px");

assert_invalid("<length>+#", "10px");

assert_invalid("<length>#+", "10px");

assert_invalid("<length> | *", "10px");

assert_invalid("<length>+", "2px,7px,calc(8px)");

assert_invalid("<length>#", "2px 7px calc(8px)");

assert_invalid("*|banana", "banana");

assert_invalid("|banana", "banana");

assert_invalid("*+", "banana");

assert_invalid("|", "banana");

assert_invalid(" |", "banana");

assert_invalid("||", "banana");

assert_invalid("foo bar", "foo bar");

assert_invalid("foo foo foo", "foo foo foo");

assert_invalid("foo § bar", "foo § bar");

assert_invalid("foo \\1F914 bar", "foo \\1F914 bar");

assert_invalid("<length> <number>", "0px 0");

assert_invalid("<length> <length> <length>", "0px 0px 0px");

assert_invalid("<integer>+ | <percentage>+ | <length>+ ", "1 1%");

assert_invalid("<integer>+ | <percentage>+ | <length>+ ", "1% 1");

assert_invalid("<integer>+ | <percentage>+ | <length>+ ", "1px 1");

assert_invalid("<integer>+ | <percentage>+ | <length>+ ", "1 1px");

assert_invalid("<integer>+ | <percentage>+ | <length>+ ", "1px 1%");

assert_invalid("<integer>+ | <percentage>+ | <length>+ ", "1% 1px");

assert_invalid("initial", "initial");

assert_invalid("inherit", "inherit");

assert_invalid("unset", "unset");

assert_invalid("revert", "revert");

assert_invalid("revert-layer", "revert-layer");

assert_invalid("default", "default");

assert_invalid("<length>|initial", "10px");

assert_invalid("<length>|INHERIT", "10px");

assert_invalid("<percentage>|unsEt", "2%");

assert_invalid("<color>|REVert", "red");

assert_invalid("<integer>|deFAUlt", "1");

// Invalid initialValue

// The 5 tests that follow are not clearly backed by the specification,

// but they're probably a good idea and we should change the spec. See

// https://github.com/w3c/css-houdini-drafts/issues/1076 .

assert_invalid("*", "initial");

assert_invalid("*", "inherit");

assert_invalid("*", "unset");

assert_invalid("*", "revert");

assert_invalid("*", "revert-layer");

// ... end possibly-invalid tests.

assert_invalid("<custom-ident>", "initial");

assert_invalid("<custom-ident>", "inherit");

assert_invalid("<custom-ident>", "unset");

assert_invalid("<custom-ident>", "revert");

assert_invalid("<custom-ident>", "revert-layer");

assert_invalid("<custom-ident>", "default");

assert_invalid("<custom-ident>+", "foo initial bar");

assert_invalid("<custom-ident>+", "foo inherit bar");

assert_invalid("<custom-ident>+", "foo unset bar");

assert_invalid("<custom-ident>+", "foo revert bar");

assert_invalid("<custom-ident>+", "foo revert-layer bar");

assert_invalid("<custom-ident>+", "foo default bar");

assert_invalid("*", ")");

assert_invalid("*", "([)]");

assert_invalid("*", "whee!");

assert_invalid("*", '"\n');

assert_invalid("*", "url(moo '')");

assert_invalid("*", "semi;colon");

assert_invalid("*", "var(invalid var ref)");

assert_invalid("*", "var(--foo)");

assert_invalid("banana", "bAnAnA");

assert_invalid("<length>", "var(--moo)");

assert_invalid("<length>", "10");

assert_invalid("<length>", "10%");

assert_invalid("<length>", "calc(5px + 10%)");

assert_invalid("<length>", "calc(5px * 3px / 6px)");

assert_invalid("<length>", "10em");

assert_invalid("<length>", "calc(4px + 3em)");

assert_invalid("<length>", "calc(4px + calc(8 * 2em))");

assert_invalid("<length>+", "calc(2ex + 16px)");

assert_invalid("<length>+", "10px calc(20px + 4rem)");

assert_invalid("<length>+", "");

assert_invalid("<length>#", "");

assert_invalid("<length>", "10px;");

assert_invalid("<length-percentage>", "calc(2px + 10% + 7ex)");

assert_invalid("<percentage>", "0");

assert_invalid("<integer>", "1.0");

assert_invalid("<integer>", "1e0");

assert_invalid("<number>|foo", "foo var(--foo, bla)");

assert_invalid("Foo | bar", "foo");

assert_invalid("Foo | bar", "Bar");

assert_invalid("<angle>", "0");

assert_invalid("<angle>", "10%");

assert_invalid("<time>", "2px");

assert_invalid("<resolution>", "10");

// "The allowed range of <resolution> values always excludes negative values"

// https://www.w3.org/TR/css-values-4/#resolution-value

assert_invalid("<resolution>", "-5.3dpcm");

assert_invalid("<transform-function>", "scale()");

assert_invalid("<transform-list>", "scale()");

assert_invalid("<transform-list>+", "translateX(2px) rotate(20deg)");

assert_invalid("<color>", "fancy-looking");

assert_invalid("<image>", "banana.png");

assert_invalid("<url>", "banana.png");

assert_invalid("<string>", "foo bar'");

assert_invalid("<string>", 'foo bar"');

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