ladybird/Tests/LibWeb/Text/input/Streams/TransformStream-start-callback.html

<!DOCTYPE html>
<script src="../include.js"></script>
<script>
    test(() => {
        const {readable} = new TransformStream({
            start(controller) {
                println("In start");
                controller.enqueue("Hello, world!");
            }
        });
        const reader = readable.getReader();
        reader.read().then(function processText({done, value}) {
            println(`Done: ${done}`);
            if (done)
                return;

            println(value);
            reader.read().then(processText);
        });
    });
</script>
Meta: Add DOCTYPEs to most text tests 2025-03-18 19:28:35 +01:00			`<!DOCTYPE html>`
Tests/LibWeb: Add TransformStream start callback test This test proves the ability of TransformStream to execute caller supplied code in the start callback, and have access to TransformStreamDefaultController. 2023-07-13 23:43:20 +02:00			`<script src="../include.js"></script>`
			`<script>`
			`test(() => {`
			`const {readable} = new TransformStream({`
			`start(controller) {`
			`println("In start");`
			`controller.enqueue("Hello, world!");`
			`}`
			`});`
			`const reader = readable.getReader();`
			`reader.read().then(function processText({done, value}) {`
			println(`Done: ${done}`);
			`if (done)`
			`return;`

			`println(value);`
			`reader.read().then(processText);`
			`});`
			`});`
			`</script>`