'Scenario: Clicking on the upload button without specifying a CSV file results in error.
Given that I am on the Membership tab on the Instructor Dashboard
When I click the Upload Button without specifying a CSV file
Then I should be shown an Error Notification
And The Notification message should read \'File is not attached.\''

def test_clicking_file_upload_button_without_file_shows_error(self):

    self.auto_enroll_section.click_upload_file_button()
    self.assertTrue(self.auto_enroll_section.is_notification_displayed(section_type=self.auto_enroll_section.NOTIFICATION_ERROR))
    self.assertEqual(self.auto_enroll_section.first_notification_message(section_type=self.auto_enroll_section.NOTIFICATION_ERROR), 'File    is    not    attached.')
