/
test-fs-promises-file-handle-stream.js
48 lines (37 loc) · 1.29 KB
/
test-fs-promises-file-handle-stream.js
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'use strict';
const common = require('../common');
// The following tests validate base functionality for the fs.promises
// FileHandle.write method.
const fs = require('fs');
const { open } = fs.promises;
const path = require('path');
const tmpdir = require('../common/tmpdir');
const assert = require('assert');
const { finished } = require('stream/promises');
const { buffer } = require('stream/consumers');
const tmpDir = tmpdir.path;
tmpdir.refresh();
async function validateWrite() {
const filePathForHandle = path.resolve(tmpDir, 'tmp-write.txt');
const fileHandle = await open(filePathForHandle, 'w');
const buffer = Buffer.from('Hello world'.repeat(100), 'utf8');
const stream = fileHandle.createWriteStream();
stream.end(buffer);
await finished(stream);
const readFileData = fs.readFileSync(filePathForHandle);
assert.deepStrictEqual(buffer, readFileData);
}
async function validateRead() {
const filePathForHandle = path.resolve(tmpDir, 'tmp-read.txt');
const buf = Buffer.from('Hello world'.repeat(100), 'utf8');
fs.writeFileSync(filePathForHandle, buf);
const fileHandle = await open(filePathForHandle);
assert.deepStrictEqual(
await buffer(fileHandle.createReadStream()),
buf
);
}
Promise.all([
validateWrite(),
validateRead(),
]).then(common.mustCall());