add persistence test

tests/persistence.spec.ts

@@ -0,0 +1,18 @@
+import { test, expect } from "./fixtures";
+import { loremIpsum } from "lorem-ipsum";
+
+test("make sure that text is persistent between page refreshes", async ({
+  newtab,
+}) => {
+  const testText = loremIpsum({ count: 1, units: "sentences" });
+  await newtab.keyboard.type(testText);
+
+  // refresh the page
+  await newtab.reload();
+
+  // wait for the text to sync
+  const input = await newtab.waitForSelector(".ProseMirror");
+
+  // check if the text is still there
+  expect(await input.evaluate((node: any) => node.textContent)).toBe(testText);
+});