TestSubmitButton.swift

import XCTest
@testable import NewMediaPlayer
class LoginTests: XCTestCase {
   func testSubmitButton() {
        var username = "example.email@gmail.com"
        var password = "123456"
        loginView.configure(model: loginViewModel)
        loginViewModel.username = username
        loginViewModel.password = password
        let textField = UITextField()
        textField.text = username
        loginView.textFieldDidEndEditing(textField)
        XCTAssertTrue(loginView.model.submitEnabled == true)
    }
}