test: use base url option at cofiguration file

e2e/can-finish-quiz.spec.ts

@@ -1,7 +1,7 @@
 import { test, expect } from "@playwright/test";
 
 test.beforeEach(async ({ page }) => {
-  await page.goto("http://localhost:3000/#/quizzes");
+  await page.goto("/#/quizzes");
 
   await page.getByRole("button", { name: "HTML" }).click();
 
@@ -13,6 +13,9 @@ test("after answer all the questions user should see 'results' page", async ({
 }) => {
   // loop through all the questions.
   for (let i = 1; i <= 10; i++) {
+    // Url should contain number of question
+    await expect(page.url()).toContain(`${i}/of/10`);
+
     // Select the first option (no matter if it right or worng)
     await page.getByRole("button").nth(0).click();
 

e2e/can-run-quiz.spec.ts

@@ -14,7 +14,7 @@ const CATEGORIES = [
 ] as const;
 
 test.beforeEach(async ({ page }) => {
-  await page.goto("http://localhost:3000/#/quizzes");
+  await page.goto("/#/quizzes");
 });
 
 test("select category page has full list of categories", async ({ page }) => {

e2e/sanity.spec.ts

@@ -1,15 +1,15 @@
 import { test, expect } from "@playwright/test";
 
 test.beforeEach(async ({ page }) => {
-  await page.goto("http://localhost:3000/");
+  await page.goto("/");
 });
 
-test("has title", async ({ page }) => {
+test("site has 'Developer Quiz' title", async ({ page }) => {
   // Expect a title "to contain" a substring.
   await expect(page).toHaveTitle(/Developer Quiz/);
 });
 
-test("pressing get started link should lead to select categories page", async ({
+test("pressing 'get started' link should lead to 'select categories' page", async ({
   page
 }) => {
   // Click the get started link.

playwright.config.ts

@@ -25,7 +25,7 @@ export default defineConfig({
   /* Shared settings for all the projects below. See https://playwright.dev/docs/api/class-testoptions. */
   use: {
     /* Base URL to use in actions like `await page.goto('/')`. */
-    // baseURL: 'http://127.0.0.1:3000',
+    baseURL: "http://127.0.0.1:3000",
 
     /* Collect trace when retrying the failed test. See https://playwright.dev/docs/trace-viewer */
     trace: "on-first-retry"