784d84cf34
This adds the following: - `fs.read(fd, buffer[, options], callback)`. - `filehandle.read(buffer[, options])`. PR-URL: https://github.com/nodejs/node/pull/42768 Refs: https://github.com/nodejs/node/pull/42601 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
27 lines
912 B
JavaScript
27 lines
912 B
JavaScript
'use strict';
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const common = require('../common');
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const fixtures = require('../common/fixtures');
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const fs = require('fs');
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const read = require('util').promisify(fs.read);
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const assert = require('assert');
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const filepath = fixtures.path('x.txt');
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const fd = fs.openSync(filepath, 'r');
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const expected = Buffer.from('xyz\n');
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const defaultBufferAsync = Buffer.alloc(16384);
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const bufferAsOption = Buffer.allocUnsafe(expected.byteLength);
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read(fd, {})
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.then(function({ bytesRead, buffer }) {
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assert.strictEqual(bytesRead, expected.byteLength);
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assert.deepStrictEqual(defaultBufferAsync.byteLength, buffer.byteLength);
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})
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.then(common.mustCall());
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read(fd, bufferAsOption, { position: 0 })
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.then(function({ bytesRead, buffer }) {
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assert.strictEqual(bytesRead, expected.byteLength);
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assert.deepStrictEqual(bufferAsOption.byteLength, buffer.byteLength);
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})
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.then(common.mustCall());
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