Geb常见错误分析(一):at语法检查

 在用GEB做自动化测试时，跳转到一个新页面往往会用at语法，例如在一个SchoolAddPage.groovy里：
class SchoolAddPage extends Page{
 static at = {
  $('.box-title').text() == "添加英语天地"
 }
}
运行程序时往往会出现如下的错误信息，详细如下。这时别怀疑你是不是选错了对象或者判断出错，也有可能是程序运行太快。可以修改成：
static at = {
  waitFor() { $('.box-title').text() == "添加英语天地" }
}
也许就能解决问题

geb.error.UnexpectedPageException: At checker page verification failed for page page.SchoolAddPage
 at geb.navigator.NonEmptyNavigator.click(NonEmptyNavigator.groovy:492)
 at geb.navigator.NonEmptyNavigator.click(NonEmptyNavigator.groovy:469)
 at geb.content.TemplateDerivedPageContent.click(TemplateDerivedPageContent.groovy:71)
 SchoolManageSpec.to add a school page(SchoolManageSpec.groovy:59)
Caused by: Assertion failed:

$('.box-title').text() == "添加英语天地"
|               |      |
[]              null   false

 at page.SchoolAddPage._clinit__closure2(SchoolAddPage.groovy:8)
 at cn.com.nd.school.page.SchoolAddPage._clinit__closure2(SchoolAddPage.groovy)
 at geb.Page.verifyThisPageAtOnly(Page.groovy:228)
 at geb.Page.verifyAt(Page.groovy:182)
 at geb.Browser.methodMissing(Browser.groovy:206)
 at geb.navigator.NonEmptyNavigator.click(NonEmptyNavigator.groovy:481)
 ... 3 more