Add UI tests

src/spec/scenarios/showJsonPreview.ts

@@ -0,0 +1,8 @@
+import { clickOn, sleep, writeText, expandTopic } from '../util'
+import { Browser } from 'webdriverio'
+
+export async function showJsonPreview(browser: Browser<void>) {
+  await expandTopic('3d-printer/OctoPrint/temperature/bed', browser)
+
+  await sleep(1000)
+}