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test: add check to test-fs-readfile-tostring-fail

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Check that all of the bytes were written to the temporary file before
reading it to catch the case where there is insufficient disk space.

PR-URL: https://github.com/nodejs/node/pull/43850
Refs: https://github.com/nodejs/node/issues/43833
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: LiviaMedeiros <livia@cirno.name>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
This commit is contained in:
Richard Lau 2022-07-18 12:24:48 +01:00 committed by GitHub
parent 6d07f4ca83
commit 604ac4bc6c
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1 changed files with 5 additions and 1 deletions
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6
test/pummel/test-fs-readfile-tostring-fail.js
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@ -25,13 +25,17 @@ stream.on('error', (err) => { throw err; });
const size = kStringMaxLength / 200;
const a = Buffer.alloc(size, 'a');
let expectedSize = 0;
for (let i = 0; i < 201; i++) {
stream.write(a);
stream.write(a, (err) => { assert.ifError(err); });
expectedSize += a.length;
}
stream.end();
stream.on('finish', common.mustCall(function() {
assert.strictEqual(stream.bytesWritten, expectedSize,
`${stream.bytesWritten} bytes written (expected ${expectedSize} bytes).`);
fs.readFile(file, 'utf8', common.mustCall(function(err, buf) {
assert.ok(err instanceof Error);
if (err.message !== 'Array buffer allocation failed') {