49 lines
1.4 KiB
JavaScript
49 lines
1.4 KiB
JavaScript
'use strict';
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const common = require('../common');
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// The following tests validate base functionality for the fs.promises
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// FileHandle.readFile method.
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const fs = require('fs');
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const { open } = 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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async function validateReadFile() {
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const filePath = path.resolve(tmpDir, 'tmp-read-file.txt');
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const fileHandle = await open(filePath, 'w+');
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const buffer = Buffer.from('Hello world'.repeat(100), 'utf8');
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const fd = fs.openSync(filePath, 'w+');
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fs.writeSync(fd, buffer, 0, buffer.length);
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fs.closeSync(fd);
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const readFileData = await fileHandle.readFile();
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assert.deepStrictEqual(buffer, readFileData);
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}
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async function validateReadFileProc() {
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// Test to make sure reading a file under the /proc directory works. Adapted
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// from test-fs-read-file-sync-hostname.js.
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// Refs:
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// - https://groups.google.com/forum/#!topic/nodejs-dev/rxZ_RoH1Gn0
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// - https://github.com/nodejs/node/issues/21331
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// Test is Linux-specific.
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if (!common.isLinux)
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return;
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const fileHandle = await open('/proc/sys/kernel/hostname', 'r');
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const hostname = await fileHandle.readFile();
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assert.ok(hostname.length > 0);
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}
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validateReadFile()
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.then(() => validateReadFileProc())
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.then(common.mustCall());
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