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test: make blob desiredSize assertion robust #64106

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test: make blob desiredSize assertion robust #64106

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6 changes: 4 additions & 2 deletions test/parallel/test-blob.js
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Original file line number Diff line number Diff line change
Expand Up @@ -354,8 +354,10 @@ assert.throws(() => new Blob({}), {
assert(!done);
setTimeout(common.mustCall(() => {
// The blob stream is now a byte stream hence after the first read,
// it should pull in the next 'hello' which is 5 bytes hence -5.
assert.strictEqual(stream[kState].controller.desiredSize, 0);
// it may have pulled in the next 'hello' which is 5 bytes hence -5.
// The ordering of this timer and the stream's setImmediate() pull
// continuation can vary across platforms.
assert([0, -5].includes(stream[kState].controller.desiredSize));
}), 0);
})().then(common.mustCall());

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