add simple PDF test

tests/example.spec.ts

@@ -1,18 +1,30 @@
 import { test, expect } from '@playwright/test';
+import * as fs from "fs";
+import { PDFDocument } from 'pdf-lib'
 
 test('has title', async ({ page }) => {
-  await page.goto('https://playwright.dev/');
+  await page.goto("/");
 
   // Expect a title "to contain" a substring.
-  await expect(page).toHaveTitle(/Playwright/);
+  await expect(page).toHaveTitle("Kém Karakter App");
 });
 
-test('get started link', async ({ page }) => {
-  await page.goto('https://playwright.dev/');
+test('simple PDF', async ({ page }) => {
+  await page.goto("/");
+  await page.getByTestId("nev").fill("Playwright");
+  await page.getByTestId("isten").fill("nincs");
 
-  // Click the get started link.
-  await page.getByRole('link', { name: 'Get started' }).click();
-
-  // Expects page to have a heading with the name of Installation.
-  await expect(page.getByRole('heading', { name: 'Installation' })).toBeVisible();
+  const downloadPromise = page.waitForEvent('download');
+  await page.getByText("PDF").click()
+  const download = await downloadPromise;
+  const path = "./downloads/" + download.suggestedFilename()
+  await download.saveAs(path)
+  const actBuf =  fs.readFileSync(path);
+  const actualDoc = await PDFDocument.load(actBuf);
+  const testBuf = fs.readFileSync('./expectations/Playwright_1.pdf');
+  const expectedDoc = await PDFDocument.load(testBuf);
+  expectedDoc.setModificationDate(actualDoc.getModificationDate())
+  const expectedBase64 = await expectedDoc.saveAsBase64()
+  const actualBase64 = await actualDoc.saveAsBase64()
+  expect(actualBase64).toEqual(expectedBase64)
 });