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| Current File : //home/ubuntu/node-v16.18.1/test/parallel/test-fs-promises-file-handle-append-file.js |
'use strict';
const common = require('../common');
// The following tests validate base functionality for the fs.promises
// FileHandle.appendFile method.
const fs = require('fs');
const { open } = fs.promises;
const path = require('path');
const tmpdir = require('../common/tmpdir');
const assert = require('assert');
const tmpDir = tmpdir.path;
tmpdir.refresh();
async function validateAppendBuffer() {
const filePath = path.resolve(tmpDir, 'tmp-append-file-buffer.txt');
const fileHandle = await open(filePath, 'a');
const buffer = Buffer.from('a&Dp'.repeat(100), 'utf8');
await fileHandle.appendFile(buffer);
const appendedFileData = fs.readFileSync(filePath);
assert.deepStrictEqual(appendedFileData, buffer);
await fileHandle.close();
}
async function validateAppendString() {
const filePath = path.resolve(tmpDir, 'tmp-append-file-string.txt');
const fileHandle = await open(filePath, 'a');
const string = 'x~yz'.repeat(100);
await fileHandle.appendFile(string);
const stringAsBuffer = Buffer.from(string, 'utf8');
const appendedFileData = fs.readFileSync(filePath);
assert.deepStrictEqual(appendedFileData, stringAsBuffer);
await fileHandle.close();
}
validateAppendBuffer()
.then(validateAppendString)
.then(common.mustCall());
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