2018-03-25 21:56:06 -05:00
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'use strict';
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const common = require('../common');
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2018-05-03 14:40:48 -04:00
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// The following tests validate base functionality for the fs.promises
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2018-03-25 21:56:06 -05:00
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// FileHandle.appendFile method.
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const fs = require('fs');
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2018-05-03 14:40:48 -04:00
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const { open } = fs.promises;
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2018-03-25 21:56:06 -05:00
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const path = require('path');
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const tmpdir = require('../common/tmpdir');
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const assert = require('assert');
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const tmpDir = tmpdir.path;
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tmpdir.refresh();
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async function validateAppendBuffer() {
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const filePath = path.resolve(tmpDir, 'tmp-append-file-buffer.txt');
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const fileHandle = await open(filePath, 'a');
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const buffer = Buffer.from('a&Dp'.repeat(100), 'utf8');
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await fileHandle.appendFile(buffer);
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const appendedFileData = fs.readFileSync(filePath);
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assert.deepStrictEqual(appendedFileData, buffer);
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2019-07-30 07:50:21 +01:00
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await fileHandle.close();
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2018-03-25 21:56:06 -05:00
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}
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async function validateAppendString() {
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const filePath = path.resolve(tmpDir, 'tmp-append-file-string.txt');
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const fileHandle = await open(filePath, 'a');
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const string = 'x~yz'.repeat(100);
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await fileHandle.appendFile(string);
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const stringAsBuffer = Buffer.from(string, 'utf8');
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const appendedFileData = fs.readFileSync(filePath);
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assert.deepStrictEqual(appendedFileData, stringAsBuffer);
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2019-07-30 07:50:21 +01:00
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await fileHandle.close();
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2018-03-25 21:56:06 -05:00
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}
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2025-02-24 10:29:24 +09:00
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async function doAppendAndCancel() {
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const filePathForHandle = path.resolve(tmpDir, 'dogs-running.txt');
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const fileHandle = await open(filePathForHandle, 'w+');
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const buffer = Buffer.from('dogs running'.repeat(512 * 1024), 'utf8');
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const controller = new AbortController();
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const { signal } = controller;
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process.nextTick(() => controller.abort());
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await assert.rejects(fileHandle.appendFile(buffer, { signal }), {
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name: 'AbortError'
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});
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await fileHandle.close();
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}
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Promise.all([
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validateAppendBuffer(),
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validateAppendString(),
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doAppendAndCancel(),
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]).then(common.mustCall());
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