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Tests/LibWeb: Add TransformStream flush callback test

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This test proves the ability of TransformStream to execute
caller supplied code in the flush callback, and have access to
TransformStreamDefaultController.
This commit is contained in:
Kenneth Myhra
2023-07-14 07:47:05 +02:00
committed by Andreas Kling
parent 5c6125c92b
commit 221f18f72e
Notes: sideshowbarker 2024-07-17 08:55:54 +09:00 
Author: https://github.com/kennethmyhra
Commit: https://github.com/SerenityOS/serenity/commit/221f18f72e
Pull-request: https://github.com/SerenityOS/serenity/pull/19998
Reviewed-by: https://github.com/awesomekling
Reviewed-by: https://github.com/shannonbooth
2 changed files with 30 additions and 0 deletions
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Tests/LibWeb/Text/input/Streams/TransformStream-flush-callback.html Normal file
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<script src="../include.js"></script>
<script>
test(() => {
const {writable, readable} = new TransformStream({
transform(chunk, controller) {
controller.enqueue(chunk.toUpperCase());
},
flush(controller) {
controller.enqueue("Enqueued in flush, this the last chunk that will be processed.");
}
});
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>