Ported more tests to playwright.

src/tests/frontend-new/specs/undo.spec.ts

@@ -0,0 +1,55 @@
+'use strict';
+
+import {expect, test} from "@playwright/test";
+import {clearPadContent, getPadBody, goToNewPad, writeToPad} from "../helper/padHelper";
+
+test.beforeEach(async ({ page })=>{
+    await goToNewPad(page);
+})
+
+
+test.describe('undo button', function () {
+
+    test('undo some typing by clicking undo button', async function ({page}) {
+        const padBody = await getPadBody(page);
+        await padBody.click()
+        await clearPadContent(page)
+
+
+        // get the first text element inside the editable space
+        const firstTextElement = padBody.locator('div').first()
+        const originalValue = await firstTextElement.textContent(); // get the original value
+        await firstTextElement.focus()
+
+        await writeToPad(page, 'foo'); // send line 1 to the pad
+
+        const modifiedValue = await firstTextElement.textContent(); // get the modified value
+        expect(modifiedValue).not.toBe(originalValue); // expect the value to change
+
+        // get clear authorship button as a variable
+        const undoButton = page.locator('.buttonicon-undo')
+        await undoButton.click() // click the button
+
+        await expect(firstTextElement).toHaveText(originalValue!);
+    });
+
+    test('undo some typing using a keypress', async function ({page}) {
+        const padBody = await getPadBody(page);
+        await padBody.click()
+        await clearPadContent(page)
+
+        // get the first text element inside the editable space
+        const firstTextElement = padBody.locator('div').first()
+        const originalValue = await firstTextElement.textContent(); // get the original value
+
+        await firstTextElement.focus()
+        await writeToPad(page, 'foo'); // send line 1 to the pad
+        const modifiedValue = await firstTextElement.textContent(); // get the modified value
+        expect(modifiedValue).not.toBe(originalValue); // expect the value to change
+
+        // undo the change
+        await page.keyboard.press('Control+Z');
+
+        await expect(firstTextElement).toHaveText(originalValue!);
+    });
+});