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test: increase test coverage for fs.promises read #22800

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9 changes: 9 additions & 0 deletions test/parallel/test-fs-promises.js
Original file line number Diff line number Diff line change
Expand Up @@ -93,6 +93,15 @@ function verifyStatObject(stat) {
await handle.datasync();
await handle.sync();

// test fs.read promises when length to read is zero bytes
{
const buf = Buffer.from('DAWGS WIN');
const bufLen = buf.length;
await handle.write(buf);
const ret = await handle.read(Buffer.alloc(bufLen), 0, 0, 0);
assert.strictEqual(ret.bytesRead, 0);
}

const buf = Buffer.from('hello fsPromises');
const bufLen = buf.length;
await handle.write(buf);
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