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promises: use encoding in readFile #19296

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benjamingr wants to merge 2 commits into from
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promises: use encoding in readFile #19296

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6469a62
promises: use encoding in readfile
Mar 12, 2018
100257f
review nit
benjamingr Mar 12, 2018
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7 changes: 6 additions & 1 deletion lib/fs/promises.js
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Original file line number Diff line number Diff line change
Expand Up @@ -157,7 +157,12 @@ async function readFileHandle(filehandle, options) {
chunks.push(buffer.slice(0, totalRead));
} while (totalRead === chunkSize);

return Buffer.concat(chunks);
const result = Buffer.concat(chunks);
if (options.encoding) {
return result.toString(options.encoding);
} else {
return result;
}
}

// All of the functions are defined as async in order to ensure that errors
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8 changes: 8 additions & 0 deletions test/parallel/test-fs-promises-writefile.js
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Expand Up @@ -35,7 +35,15 @@ async function doRead() {
assert.deepStrictEqual(buf, data);
}

async function doReadWithEncoding() {
const data = await fsPromises.readFile(dest, 'utf-8');
const syncData = fs.readFileSync(dest, 'utf-8');
assert.strictEqual(typeof data, 'string');
assert.deepStrictEqual(data, syncData);
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@lpinca lpinca Mar 24, 2018

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assert.strictEqual() was probably better here, but I've already landed this and it's not a biggie so I will not force push.

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@benjamingr benjamingr Mar 24, 2018

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@lpinca why?

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@lpinca lpinca Mar 24, 2018 •
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It's a string no? No need to be deep.

}

doWrite()
.then(doAppend)
.then(doRead)
.then(doReadWithEncoding)
.then(common.mustCall());