Merge pull request #10 from JakubRumpca/test-case-05

Test case 05: Failed login with wrong password

TEST_CASES.md

@@ -124,4 +124,32 @@
 - Three products are correctly added to the cart and displayed with accurate details.
 - The removal process completes without errors.
 
+---
+
+## 5) Test Case: Failed login with wrong password
+
+### Test Case ID:
+- TC-05
+
+### Test Case Name:
+- Should check if the standard user can not log in using the wrong password.
+
+### Test Objective:
+- Verify that the standard user can not log in.
+
+### Pre-conditions:
+- The user has a valid account on the online store.
+- The user knows their login credentials and purposely sets the wrong password.
+
+### Steps:
+- Open the web browser.
+- Go to the online store's login page URL (https://www.saucedemo.com/).
+- Fill username input (standard_user).
+- Fill password input (wrongPassword).
+- Verify the presence of a error message (Epic sadface: Username and password do not match any user in this service).
+
+### Expected Results:
+- The user can not logs in. 
+- The error message is displayed.
+
 ---

tests/users.spec.ts

@@ -1,7 +1,8 @@
 import { test, expect } from '@playwright/test';
 import { LoginPage } from '../page_object/loginPage';
 
-let loginPage: LoginPage
+let loginPage: LoginPage;
+const errorMessageLocator: string = '[data-test="error"]';
 
 test.beforeEach(async ({page}) => {
   loginPage = new LoginPage(page);
@@ -14,5 +15,10 @@ test('Should check if the standard user can log in', async ({ page }) => {
 
 test('Should check if the locked user can not log in', async ({ page }) => {
   await loginPage.login(process.env.LOCKED_USER, process.env.PASSWORD);
-  await expect(page.locator('[data-test="error"]')).toContainText('Epic sadface: Sorry, this user has been locked out.');
+  await expect(page.locator(errorMessageLocator)).toContainText('Epic sadface: Sorry, this user has been locked out.');
+});
+
+test('Should check if the standard user can not log in using the wrong password', async ({ page }) => {
+  await loginPage.login(process.env.STANDARD_USER, "wrongPassword");
+  await expect(page.locator(errorMessageLocator)).toContainText('Epic sadface: Username and password do not match any user in this service');
 });