test: move custom WHATWG URL tests into separate files

To enable automatic update of WPT, move all our custom
WHATWG URL tests that are not present in the upstream into
files starting with `test-whatwg-url-custom-`, so it's easier
to identify test cases that can be upstreamed and test cases
that should be rolled into our repo (possibly with automation).

PR-URL: https://github.com/nodejs/node/pull/22442
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>

1 files changed, 44 insertions, 0 deletions

diff --git a/test/parallel/test-whatwg-url-custom-searchparams-keys.js b/test/parallel/test-whatwg-url-custom-searchparams-keys.js
new file mode 100644
index 0000000000..00800cc79c
--- /dev/null
+++ b/test/parallel/test-whatwg-url-custom-searchparams-keys.js
@@ -0,0 +1,44 @@
+'use strict';
+
+// Tests below are not from WPT.
+
+const common = require('../common');
+const assert = require('assert');
+const URLSearchParams = require('url').URLSearchParams;
+
+const params = new URLSearchParams('a=b&c=d');
+const keys = params.keys();
+
+assert.strictEqual(typeof keys[Symbol.iterator], 'function');
+assert.strictEqual(keys[Symbol.iterator](), keys);
+assert.deepStrictEqual(keys.next(), {
+  value: 'a',
+  done: false
+});
+assert.deepStrictEqual(keys.next(), {
+  value: 'c',
+  done: false
+});
+assert.deepStrictEqual(keys.next(), {
+  value: undefined,
+  done: true
+});
+assert.deepStrictEqual(keys.next(), {
+  value: undefined,
+  done: true
+});
+
+common.expectsError(() => {
+  keys.next.call(undefined);
+}, {
+  code: 'ERR_INVALID_THIS',
+  type: TypeError,
+  message: 'Value of "this" must be of type URLSearchParamsIterator'
+});
+common.expectsError(() => {
+  params.keys.call(undefined);
+}, {
+  code: 'ERR_INVALID_THIS',
+  type: TypeError,
+  message: 'Value of "this" must be of type URLSearchParams'
+});