在空導航器上使用導航器方法的Geb
[英]Geb using Navigator Methods on empty Navigators
I am a little confused by the verbiage used for the navigator API found here http://www.gebish.org/manual/current/api/geb/navigator/Navigator.html
我對這里的導航器API使用的措辭感到有些困惑http://www.gebish.org/manual/current/api/geb/navigator/Navigator.html
In particualr, I am confused by the .isDisplayed Method.
特別是，我對.isDisplayed方法感到困惑。
The method documentation states: "Returns true if the sole context element is displayed or false for empty Navigators. Cannot be called on multi element Navigators."
方法文檔說明：“如果顯示唯一的上下文元素，則返回true;對於空的Navigators，返回false。無法在多元素導航器上調用。”
The problem is if I call .isDisplayed() on an empty navigator it does not return false. Instead it throws this error:
問題是如果我在空導航器上調用.isDisplayed（）它不會返回false。相反，它會拋出此錯誤：
table: geb.navigator.EmptyNavigator' is not present
The line it fails at looks something like this:
它失敗的線看起來像這樣：
at SomePage //This page has a module element called "module"
if(module.table.isDiplayed()){ // module has a navigtor element called table
//do stuff
}
The table element in question is indeed non-existant, so the table element is indeed an empty navigator, but according to the documentation that means that when I call .isDisplayed() it should return false but instead it throws the above mentioned error
有問題的表元素確實是不存在的，所以table元素確實是一個空的導航器，但根據文檔，這意味着當我調用.isDisplayed（）時它應該返回false但是它會拋出上面提到的錯誤
this is the same case when calling simular navigator methods such as .isEmpty() again, if the the element is not found on the page I would expect .isEmpty() to return true when being called from the empty element, but instead it throws the EmptyNavigator exception.
再次調用諸如.isEmpty（）之類的simular導航器方法時也是如此，如果在頁面上找不到該元素，我希望.isEmpty（）在從空元素調用時返回true，而是拋出它EmptyNavigator異常。
What gives?
是什么賦予了？
1 个解决方案
#1
4
This is because the table element on module on your page is a required element (which is default). When you try to use a required page element, but the selector returns an empty navigator, geb will throw that exception. To fix this, you want to tell geb that the module is not required:
這是因為頁面上模塊上的表元素是必需元素（默認情況下）。當您嘗試使用所需的頁面元素，但選擇器返回一個空導航器時，geb將拋出該異常。要解決此問題，您需要告訴geb該模塊不是必需的：
class Module{
static content {
table(required: false) { /* selector here*/ }
}
}
Now when you use table, you will get the empty navigator back instead of the exception.
現在，當您使用表時，您將返回空導航器而不是異常。
注意！
本站翻译的文章，版权归属于本站，未经许可禁止转摘，转摘请注明本文地址：https://www.itdaan.com/blog/2016/06/03/7209455703bbe38535954e46ddee44c8.html。