angularjs – isElementPresent的简单量角器测试失败,不支持定位器策略

我的测试：

it('should allow login',function() {
  browser.get('index.html');

  $('#username').sendKeys('administrator');
  $('#password').sendKeys('password');
  $('#login').click();

  var logout = $('#logout');
  expect($p.isElementPresent(logout)).to.eventually.be.true;
});

但这错误：

Error: Unsupported locator strategy: click
  at Error (<anonymous>)
  at Function.webdriver.Locator.createFromObj (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/locators.js:97:9)
  at Function.webdriver.Locator.checkLocator (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/locators.js:111:33)
  at webdriver.WebDriver.findElements (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/webdriver.js:805:31)
  at webdriver.WebDriver.isElementPresent (/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/webdriver/webdriver.js:787:29)
  at Protractor.isElementPresent (/usr/local/lib/node_modules/protractor/lib/protractor.js:476:22)
  at /Users/pschuegr/wt/client/e2e/login_test.js:26:15

奇怪的是,它指向isElementPresent行,而不是点击的行.我对webdriver很新,所以如果我错过了一些明显的东西,请道歉.我正在使用mocha框架(这意味着量角器的金丝雀版本),fwiw.

任何想法都赞赏.

$(‘#logout’)是一个WebElement. isElementPresent采用定位器,如by.css

$('#username').sendKeys('administrator');
$('#password').sendKeys('password');
$('#login').click();

var logout = by.css('#logout');
browser.wait(function() { return $p.isElementPresent(logout); },8000);
expect($p.isElementPresent(logout)).toBeTruthy();