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test: add fs/promises filehandle sync() and datasync() tests. #20530

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test: add fs/promises filehandle sync() and datasync() tests. #20530

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05d5a1b
test: add fs/promises filehandle sync() and datasync() tests.
May 5, 2018
4c72ba1
test: replace fs/promises methods with fs/promises filehandle methods
May 7, 2018
c431fc5
test: fix fs/promises to fs.promises
May 19, 2018
d462d2c
test: remove calling `common.mustCall()` that is unnecessary
Jun 10, 2018
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27 changes: 27 additions & 0 deletions test/parallel/test-fs-promises-file-handle-sync.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,27 @@
'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();