public void LogInBtnFocusEnterKey()
{
LoginPage loginPage = new LoginPage(driver);
loginPage.ACCESSIBILITYNoUsrNoPwd();
//below the assert tries matching the expected error message against the error message of the element at each state.
Assert.AreEqual("Epic sadface: Username is required", loginPage.pullErrorMsg());
loginPage.ACCESSIBILITYUserNoPwd();
Assert.AreEqual("Epic sadface: Password is required", loginPage.pullErrorMsg());
loginPage.ACCESSIBILITYIncorrectDetails();
Assert.AreEqual("Epic sadface: Username and password do not match any user in this service", loginPage.pullErrorMsg());
loginPage.ACCESSIBILITYLogin();
Assert.IsTrue(driver.Url == "https://www.saucedemo.com/inventory.html");
}