adds some UI tests

plugins/UserId/tests/UI/UserId_spec.js

@@ -0,0 +1,28 @@
+/*!
+ * Matomo - free/libre analytics platform
+ *
+ * Screenshot tests for IPReports plugin
+ *
+ * @link https://matomo.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ */
+
+describe("UserId", function () {
+  this.fixture = "Piwik\\Plugins\\UserId\\tests\\Fixtures\\TrackFewVisitsAndCreateUsers";
+
+  it('should show user id report', async function () {
+    await page.goto('?module=CoreHome&action=index&idSite=1&period=day&date=2010-02-04#?idSite=1&period=day&date=2010-02-04&category=General_Visitors&subcategory=UserId_UserReportTitle');
+    await page.waitForNetworkIdle();
+    expect(await page.screenshotSelector('#widgetUserIdgetUsers')).to.matchImage('report');
+  });
+
+    it('should switch to table with engagement metrics', async function () {
+      await page.click('.activateVisualizationSelection > span');
+      await page.click('.tableIcon[data-footer-icon-id=tableAllColumns]');
+      await page.mouse.move(-10, -10);
+      await page.waitForNetworkIdle();
+      expect(await page.screenshotSelector('#widgetUserIdgetUsers')).to.matchImage('report_engagement');
+  });
+
+
+});