import XCTest
@testable import UITestDemo

class UITestDemoTests: XCTestCase
{

var homevc:HomeViewController? ;  
override func setUp() {  
    super.setUp()  
    //  
    let sb=UIStoryboard.init(name: "Main", bundle: nil);  
    homevc = sb.instantiateViewControllerWithIdentifier("homeVC") as? HomeViewController;  
    homevc?.loadView();//初始化viewController

}

override func tearDown() {  
    // Put teardown code here. This method is called after the invocation of each test method in the class.  
    super.tearDown()

}

func testExample() {  
    homevc!.ClickBtnSubmit("");//触发发点击事件  
    XCTAssertEqual(homevc!.tfName.text ,"y");//断言文本框内的值是y  
}

　　主要是 下面这句. 这样就可以测试controller里的大部分逻辑了.

homevc?.loadView();//初始化viewController