Register For a new Account Test

.swift

class When_User_Is_Registering_For_A_New_Account: XCTestCase { 
  
  private var app :XCUIApplication!
    
    override func setUp() {
        super.setUp()
        continueAfterFailure = false
        
        self.app = XCUIApplication()
        self.app.launch()
    }
  
   func test_should_create_account_successfully() {
        
        app.textFields["usernameTextField"].tapAndType(text: "johndoe")
        app.textFields["passwordTextField"].tapAndType(text: "password")
        
        app.buttons["registerButton"].tap() // writes a user default value to users
        
        // go to the login screen if the login is successfull
        XCTAssertEqual("Login", app.navigationBars.element.identifier)
    }
}