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nodejs/test/parallel/test-fs-lchown.js
Ruben Bridgewater e038d6a1cd
test: refactor common.expectsError
This completely refactors the `expectsError` behavior: so far it's
almost identical to `assert.throws(fn, object)` in case it was used
with a function as first argument. It had a magical property check
that allowed to verify a functions `type` in case `type` was passed
used in the validation object. This pattern is now completely removed
and `assert.throws()` should be used instead.

The main intent for `common.expectsError()` is to verify error cases
for callback based APIs. This is now more flexible by accepting all
validation possibilites that `assert.throws()` accepts as well. No
magical properties exist anymore. This reduces surprising behavior
for developers who are not used to the Node.js core code base.

This has the side effect that `common` is used significantly less
frequent.

PR-URL: https://github.com/nodejs/node/pull/31092
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
2019-12-31 15:54:20 +01:00

66 lines
2.0 KiB
JavaScript

'use strict';
const common = require('../common');
const tmpdir = require('../common/tmpdir');
const assert = require('assert');
const fs = require('fs');
const path = require('path');
const { promises } = fs;
// Validate the path argument.
[false, 1, {}, [], null, undefined].forEach((i) => {
const err = { name: 'TypeError', code: 'ERR_INVALID_ARG_TYPE' };
assert.throws(() => fs.lchown(i, 1, 1, common.mustNotCall()), err);
assert.throws(() => fs.lchownSync(i, 1, 1), err);
promises.lchown(false, 1, 1)
.then(common.mustNotCall())
.catch(common.expectsError(err));
});
// Validate the uid and gid arguments.
[false, 'test', {}, [], null, undefined].forEach((i) => {
const err = { name: 'TypeError', code: 'ERR_INVALID_ARG_TYPE' };
assert.throws(
() => fs.lchown('not_a_file_that_exists', i, 1, common.mustNotCall()),
err
);
assert.throws(
() => fs.lchown('not_a_file_that_exists', 1, i, common.mustNotCall()),
err
);
assert.throws(() => fs.lchownSync('not_a_file_that_exists', i, 1), err);
assert.throws(() => fs.lchownSync('not_a_file_that_exists', 1, i), err);
promises.lchown('not_a_file_that_exists', i, 1)
.then(common.mustNotCall())
.catch(common.expectsError(err));
promises.lchown('not_a_file_that_exists', 1, i)
.then(common.mustNotCall())
.catch(common.expectsError(err));
});
// Validate the callback argument.
[false, 1, 'test', {}, [], null, undefined].forEach((i) => {
assert.throws(() => fs.lchown('not_a_file_that_exists', 1, 1, i), {
name: 'TypeError',
code: 'ERR_INVALID_CALLBACK'
});
});
if (!common.isWindows) {
const testFile = path.join(tmpdir.path, path.basename(__filename));
const uid = process.geteuid();
const gid = process.getegid();
tmpdir.refresh();
fs.copyFileSync(__filename, testFile);
fs.lchownSync(testFile, uid, gid);
fs.lchown(testFile, uid, gid, common.mustCall(async (err) => {
assert.ifError(err);
await promises.lchown(testFile, uid, gid);
}));
}