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-rw-r--r--test/test-jsdom.js49
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diff --git a/test/test-jsdom.js b/test/test-jsdom.js
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+/*
+ * Copyright (C) 2021 Yomichan Authors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+const assert = require('assert');
+const {testMain} = require('../dev/util');
+
+/**
+ * This function tests the following bug:
+ * * https://github.com/jsdom/jsdom/issues/3211
+ * * https://github.com/dperini/nwsapi/issues/48
+ */
+function testJSDOMSelectorBug() {
+ // nwsapi is used by JSDOM
+ const {JSDOM} = require('jsdom');
+ const dom = new JSDOM();
+ const {document} = dom.window;
+ const div = document.createElement('div');
+ div.innerHTML = '<div class="b"><div class="c"></div></div>';
+ const c = div.querySelector('.c');
+ assert.doesNotThrow(() => { c.matches('.a:nth-last-of-type(1) .b .c'); });
+}
+
+function testJSDOM() {
+ testJSDOMSelectorBug();
+}
+
+function main() {
+ testJSDOM();
+}
+
+module.exports = {
+ testJSDOM
+};
+
+if (require.main === module) { testMain(main); }