48 lines
1.2 KiB
JavaScript
48 lines
1.2 KiB
JavaScript
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'use strict';
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const common = require('../common');
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const fs = require('fs');
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const fsPromises = fs.promises;
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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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const dest = path.resolve(tmpDir, 'tmp.txt');
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const buffer = Buffer.from('abc'.repeat(1000));
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const buffer2 = Buffer.from('xyz'.repeat(1000));
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async function doWrite() {
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await fsPromises.writeFile(dest, buffer);
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const data = fs.readFileSync(dest);
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assert.deepStrictEqual(data, buffer);
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}
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async function doAppend() {
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await fsPromises.appendFile(dest, buffer2);
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const data = fs.readFileSync(dest);
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const buf = Buffer.concat([buffer, buffer2]);
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assert.deepStrictEqual(buf, data);
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}
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async function doRead() {
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const data = await fsPromises.readFile(dest);
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const buf = fs.readFileSync(dest);
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assert.deepStrictEqual(buf, data);
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}
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async function doReadWithEncoding() {
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const data = await fsPromises.readFile(dest, 'utf-8');
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const syncData = fs.readFileSync(dest, 'utf-8');
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assert.strictEqual(typeof data, 'string');
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assert.deepStrictEqual(data, syncData);
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}
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doWrite()
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.then(doAppend)
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.then(doRead)
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.then(doReadWithEncoding)
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.then(common.mustCall());
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