Test jsdom config is passed through

test/unit.js

@@ -0,0 +1,9 @@
+/* eslint new-cap: ["error", { "capIsNew": false }] */
+import test from 'ava';
+import Window from '../';
+
+test('jsdom config is passed through', t => {
+	const userAgent = 'Custom user agent';
+	const window = new Window({ userAgent });
+	t.is(window.navigator.userAgent, userAgent);
+});