def __init__(self, page) -> None: super().__init__(page) # Fields have normal labels, so I look for them the same way a user sees them, # not by id or CSS class, which a layout designer can rename at any moment self.username_input = page.get_by_label("Username") self.password_input = page.get_by_label("Password") self.login_button = page.get_by_role("button", name="Login") # The form is needed to check that we haven't navigated away in negative tests self.login_form = page.locator("form#login") # The flash message, it is the same for success and error self.flash_message = page.locator("#flash") def fill_credentials(self, username: str, password: str): self.username_input.fill(username) self.password_input.fill(password) return self def login(self, username: str, password: str) -> SecurePage: """