example.ts

    const page = await context.newPage();
    await page.goto('/');
    const loginPage = new LoginPage(page)
    //option 1
    await loginPage.login(data)
    //option 2
    await loginPage.userNameFill(userData.standart)
    await loginPage.userPasswordFill(userData.correctPassword)
    await loginPage.loginButtonClick()
    await loginPage.burgerMenuClick()
    await loginPage.aboutButtClick()
    
  test('Should login using standart User Name and correct password', async ({ page }) => {
    const loginPage = new LoginPage(page)
    data.user = 'correct'
    data.pass = 'correct'
    await loginPage.login(data)
    await loginPage.expectHeaderToHaveText('Products')
  });
  
    test('Should login using standart User Name and correct password', async ({ page }) => {
    const loginPage = new LoginPage(page)
    data.user = 'incorrect'
    data.pass = 'incorrect'
    await loginPage.login(data)
    await loginPage.expectHeaderToHaveText('Products')
  });
  
    async login(userData){
        await loginPage.userNameFill(userData.standart)
        await loginPage.userPasswordFill(userData.correctPassword)
        await loginPage.loginButtonClick()
    }
    async loginWithJWT(userData){
        await otherStuff()
    }