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

<!DOCTYPE html>
<script src="../include.js"></script>
<script>
    test(() => {
        const {writable, readable} = new TransformStream({
            transform(chunk, controller) {
                controller.enqueue(chunk.toUpperCase());
            }
        });
        const writer = writable.getWriter();
        writer.write("Hello, world!");
        writer.close();
        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 transform callback test This test proves the ability of TransformStream to execute to execute caller supplied code in the transform callback that can transform incoming chunks, and have access to TransformStreamDefaultController. 2023-07-13 23:29:01 +02:00			`<script src="../include.js"></script>`
			`<script>`
			`test(() => {`
			`const {writable, readable} = new TransformStream({`
			`transform(chunk, controller) {`
			`controller.enqueue(chunk.toUpperCase());`
			`}`
			`});`
			`const writer = writable.getWriter();`
			`writer.write("Hello, world!");`
			`writer.close();`
			`const reader = readable.getReader();`
			`reader.read().then(function processText({done, value}) {`
			println(`Done: ${done}`);
			`if (done)`
			`return;`

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