public void InvalidAuthFieldInputErrors(string email, string password, string expectedErrorMessage) { headerNotAuthPage.ClickAuthButton(); if (email.Length != 0) { authPage .ClickOnEmailField() .EmailUserEnter(email) .SighInButtonClick(); String passwordError = wait.Until(e => e.FindElement(authPage.PasswordError)).Text; Assert.AreEqual(expectedErrorMessage, passwordError); } else { authPage .ClickOnPasswordField() .PasswordUserEnter(password) .SighInButtonClick(); String emailErrorText = wait.Until(e => e.FindElement(authPage.EmailError)).Text; Assert.AreEqual(expectedErrorMessage, emailErrorText); } }