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test: add filehandle sync() and datasync() tests

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To increase test coverage for fs.promises,
added tests for filehandle.sync and filehandle.datasync.

PR-URL: https://github.com/nodejs/node/pull/20530
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
This commit is contained in:
Masashi Hirano 2018-05-05 11:38:09 +09:00 committed by Michaël Zasso
parent 2faab111ef
commit 71ca076ca7
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1 changed files with 27 additions and 0 deletions
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test/parallel/test-fs-promises-file-handle-sync.js Normal file
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'use strict';
const common = require('../common');
const assert = require('assert');
const fixtures = require('../common/fixtures');
const tmpdir = require('../common/tmpdir');
const { access, copyFile, open } = require('fs').promises;
const path = require('path');
common.crashOnUnhandledRejection();
async function validateSync() {
tmpdir.refresh();
const dest = path.resolve(tmpdir.path, 'baz.js');
await copyFile(fixtures.path('baz.js'), dest);
await access(dest, 'r');
const handle = await open(dest, 'r+');
await handle.datasync();
await handle.sync();
const buf = Buffer.from('hello world');
await handle.write(buf);
const ret = await handle.read(Buffer.alloc(11), 0, 11, 0);
assert.strictEqual(ret.bytesRead, 11);
assert.deepStrictEqual(ret.buffer, buf);
}
validateSync();