LayoutTests/fast/parser/html-processing-instruction-enabled.html

<!DOCTYPE html>
<script src="../../resources/js-test.js"></script>
<body>
<script>

description('Tests the HTML processing instruction parser setting. It ships off, but test runners turn testable settings on, so this starts by turning it off explicitly.');

function parseProcessingInstruction(markup)
{
    const container = document.createElement('div');
    container.innerHTML = markup;
    return container.firstChild;
}

debug('With the setting off, the input is a bogus comment, as it was before processing instructions were parsed.');
internals.settings.setHTMLProcessingInstructionEnabled(false);
var node = parseProcessingInstruction('<?target data?>');
shouldBe('node.nodeType', 'Node.COMMENT_NODE');
shouldBeEqualToString('node.data', '?target data?');

debug('');
debug('With the setting on, it is a processing instruction.');
internals.settings.setHTMLProcessingInstructionEnabled(true);
node = parseProcessingInstruction('<?target data?>');
shouldBe('node.nodeType', 'Node.PROCESSING_INSTRUCTION_NODE');
shouldBeEqualToString('node.target', 'target');
shouldBeEqualToString('node.data', 'data');

debug('');
debug('Whitespace ends the target, the rest is data.');
node = parseProcessingInstruction('<?tar get?>');
shouldBe('node.nodeType', 'Node.PROCESSING_INSTRUCTION_NODE');
shouldBeEqualToString('node.target', 'tar');
shouldBeEqualToString('node.data', 'get');

debug('');
debug('A character that cannot appear in a target makes it a bogus comment again, keeping the characters already consumed.');
node = parseProcessingInstruction('<?ta=rget?>');
shouldBe('node.nodeType', 'Node.COMMENT_NODE');
shouldBeEqualToString('node.data', '?ta=rget?');

debug('');
debug('The xml and xml-stylesheet targets stay bogus comments.');
node = parseProcessingInstruction('<?xml version="1.0"?>');
shouldBe('node.nodeType', 'Node.COMMENT_NODE');
shouldBeEqualToString('node.data', '?xml version="1.0"?');
node = parseProcessingInstruction('<?xml-stylesheet href="style.css"?>');
shouldBe('node.nodeType', 'Node.COMMENT_NODE');
shouldBeEqualToString('node.data', '?xml-stylesheet href="style.css"?');

debug('');
debug('Data is optional, and a null character in the data is replaced.');
node = parseProcessingInstruction('<?target?>');
shouldBe('node.nodeType', 'Node.PROCESSING_INSTRUCTION_NODE');
shouldBeEqualToString('node.target', 'target');
shouldBeEqualToString('node.data', '');
node = parseProcessingInstruction('<?target a\0b?>');
shouldBe('node.nodeType', 'Node.PROCESSING_INSTRUCTION_NODE');
shouldBeEqualToString('node.data', 'a\uFFFDb');

internals.settings.setHTMLProcessingInstructionEnabled(false);

</script>
</body>
</html>