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nodejs/test/parallel/test-fs-buffer.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

48 lines
1.2 KiB
JavaScript

'use strict';
const common = require('../common');
const fixtures = require('../common/fixtures');
const assert = require('assert');
const fs = require('fs');
const path = require('path');
const tmpdir = require('../common/tmpdir');
tmpdir.refresh();
fs.access(Buffer.from(tmpdir.path), common.mustCall(assert.ifError));
const buf = Buffer.from(path.join(tmpdir.path, 'a.txt'));
fs.open(buf, 'w+', common.mustCall((err, fd) => {
assert.ifError(err);
assert(fd);
fs.close(fd, common.mustCall(assert.ifError));
}));
assert.throws(
() => {
fs.accessSync(true);
},
{
code: 'ERR_INVALID_ARG_TYPE',
name: 'TypeError',
message: 'The "path" argument must be of type string or an instance of ' +
'Buffer or URL. Received type boolean (true)'
}
);
const dir = Buffer.from(fixtures.fixturesDir);
fs.readdir(dir, 'hex', common.mustCall((err, hexList) => {
assert.ifError(err);
fs.readdir(dir, common.mustCall((err, stringList) => {
assert.ifError(err);
stringList.forEach((val, idx) => {
const fromHexList = Buffer.from(hexList[idx], 'hex').toString();
assert.strictEqual(
fromHexList,
val,
`expected ${val}, got ${fromHexList} by hex decoding ${hexList[idx]}`
);
});
}));
}));