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LibWeb/Tests: Add a test to cover byte stream enqueue and respond

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Shannon Booth 2023-12-02 22:45:09 +13:00 • committed by Andreas Kling
parent 48aa9fbe07
commit a8caa3edbc
2 changed files with 57 additions and 0 deletions
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14
Tests/LibWeb/Text/expected/Streams/ReadableByteStream-enqueue-respond.txt Normal file
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Enqueuing array 60,61,62,63,64,65,66,67,68,69 onto [object ReadableByteStreamController]
[object ReadableStreamBYOBRequest] view: '11,12,13,14,15,16'
Got view of buffer: 60,61,62,63,64,65,66,67,68,69,11,12,13,14,15,16, offset 10, length 6
[object ReadableStreamBYOBRequest] view: '12,13,14,15,16'
Got view of buffer: 60,61,62,63,64,65,66,67,68,69,11,12,13,14,15,16, offset 11, length 5
[object ReadableStreamBYOBRequest] view: '13,14,15,16'
Got view of buffer: 60,61,62,63,64,65,66,67,68,69,11,12,13,14,15,16, offset 12, length 4
[object ReadableStreamBYOBRequest] view: '14,15,16'
Got view of buffer: 60,61,62,63,64,65,66,67,68,69,11,12,13,14,15,16, offset 13, length 3
[object ReadableStreamBYOBRequest] view: '15,16'
Got view of buffer: 60,61,62,63,64,65,66,67,68,69,11,12,13,14,15,16, offset 14, length 2
[object ReadableStreamBYOBRequest] view: '16'
Got view of buffer: 60,61,62,63,64,65,66,67,68,69,11,12,13,14,15,16, offset 15, length 1
Final data: 60,61,62,63,64,65,66,67,68,69,11,12,13,14,15,16

43
Tests/LibWeb/Text/input/Streams/ReadableByteStream-enqueue-respond.html Executable file
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<script src="../include.js"></script>
<script>
function makeReadableByteStream() {
return new ReadableStream({
type: "bytes",
start(controller) {
const array = new Uint8Array([60, 61, 62, 63, 64, 65, 66, 67, 68, 69]);
println(`Enqueuing array ${array} onto ${controller}`);
controller.enqueue(array);
},
async pull(controller) {
println(`${controller.byobRequest} view: '${controller.byobRequest.view}'`);
const v = controller.byobRequest.view;
println(`Got view of buffer: ${new Uint8Array(v.buffer)}, offset ${v.byteOffset}, length ${v.byteLength}`);
controller.byobRequest.respond(1);
},
});
}
asyncTest(async done => {
let readableStream = makeReadableByteStream();
const reader = readableStream.getReader({ mode: "byob" });
let startingAB = new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]);
const buffer = await readInto(startingAB);
println(`Final data: ${new Uint8Array(buffer)}`);
done();
async function readInto(buffer) {
let offset = 0;
while (offset < buffer.byteLength) {
let u8 = new Uint8Array(buffer, offset, buffer.byteLength - offset)
const { value: view, done } = await reader.read(u8);
buffer = view.buffer;
if (done) {
break;
}
offset += view.byteLength;
}
return buffer;
}
});
</script>