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30fb4a015d
PR-URL: https://github.com/nodejs/node/pull/35086 Reviewed-By: Ruy Adorno <ruyadorno@github.com> Reviewed-By: Rich Trott <rtrott@gmail.com>
57 lines
2.1 KiB
JavaScript
57 lines
2.1 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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const common = require('../common');
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const tmpdir = require('../common/tmpdir');
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// This test ensures that `fs.truncate` opens the file with `r+` and not `w`,
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// which had earlier resulted in the target file's content getting zeroed out.
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// https://github.com/nodejs/node-v0.x-archive/issues/6233
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const assert = require('assert');
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const fs = require('fs');
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const filename = `${tmpdir.path}/truncate-file.txt`;
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tmpdir.refresh();
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// Synchronous test.
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{
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fs.writeFileSync(filename, '0123456789');
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assert.strictEqual(fs.readFileSync(filename).toString(), '0123456789');
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fs.truncateSync(filename, 5);
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assert.strictEqual(fs.readFileSync(filename).toString(), '01234');
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}
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// Asynchronous test.
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{
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fs.writeFileSync(filename, '0123456789');
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assert.strictEqual(fs.readFileSync(filename).toString(), '0123456789');
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fs.truncate(
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filename,
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5,
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common.mustSucceed(() => {
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assert.strictEqual(fs.readFileSync(filename).toString(), '01234');
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})
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);
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}
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