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dd52c05046
Comparing any value to any non-RegExp literal or undefined using
strictEqual (or notStrictEqual) passes if and only if deepStrictEqual
(or notDeepStrictEqual, respectively) passes.
Unnecessarily using deep comparisons adds confusion.
This patch adds an ESLint rule that forbids the use of deepStrictEqual
and notDeepStrictEqual when the expected value (i.e., the second
argument) is a non-RegExp literal or undefined.
For reference, an ESTree literal is defined as follows.
extend interface Literal <: Expression {
type: "Literal";
value: string | boolean | null | number | RegExp | bigint;
}
The value `undefined` is an `Identifier` with `name: 'undefined'`.
PR-URL: https://github.com/nodejs/node/pull/40634
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Voltrex <mohammadkeyvanzade94@gmail.com>
37 lines
1009 B
JavaScript
37 lines
1009 B
JavaScript
'use strict';
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// This test makes sure that `writeFile()` always writes from the current
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// position of the file, instead of truncating the file.
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const common = require('../common');
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const assert = require('assert');
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const path = require('path');
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const { readFileSync } = require('fs');
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const { open } = require('fs').promises;
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const tmpdir = require('../common/tmpdir');
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tmpdir.refresh();
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const fn = path.join(tmpdir.path, 'test.txt');
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async function writeFileTest() {
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const handle = await open(fn, 'w');
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/* Write only five bytes, so that the position moves to five. */
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const buf = Buffer.from('Hello');
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const { bytesWritten } = await handle.write(buf, 0, 5, null);
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assert.strictEqual(bytesWritten, 5);
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/* Write some more with writeFile(). */
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await handle.writeFile('World');
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/* New content should be written at position five, instead of zero. */
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assert.strictEqual(readFileSync(fn).toString(), 'HelloWorld');
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await handle.close();
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}
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writeFileTest()
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.then(common.mustCall());
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