node/test/parallel/test-whatwg-url-custom-searchparams-values.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

45 lines
1014 B
JavaScript

'use strict';
// Tests below are not from WPT.
require('../common');
const assert = require('assert');
const URLSearchParams = require('url').URLSearchParams;
const params = new URLSearchParams('a=b&c=d');
const values = params.values();
assert.strictEqual(typeof values[Symbol.iterator], 'function');
assert.strictEqual(values[Symbol.iterator](), values);
assert.deepStrictEqual(values.next(), {
value: 'b',
done: false
});
assert.deepStrictEqual(values.next(), {
value: 'd',
done: false
});
assert.deepStrictEqual(values.next(), {
value: undefined,
done: true
});
assert.deepStrictEqual(values.next(), {
value: undefined,
done: true
});
assert.throws(() => {
values.next.call(undefined);
}, {
code: 'ERR_INVALID_THIS',
name: 'TypeError',
message: 'Value of "this" must be of type URLSearchParamsIterator'
});
assert.throws(() => {
params.values.call(undefined);
}, {
code: 'ERR_INVALID_THIS',
name: 'TypeError',
message: 'Value of "this" must be of type URLSearchParams'
});