Login
click login_button_icon
type userid admin
type password admin
click //form[@id='login_form']/div[2]/input[1]
assertValue //input[@id='repo_path'] Default Files
click logout_button_icon
assertValue //input[@id='repo_path'] No Repository
click login_button_icon
type userid admin
type password toto
click //form[@id='login_form']/div[2]/input[1]
assertAlertPresent