Selenium and JSF 2.0

When I a generate SelectOneMenu with JSF2.0 the the id I specified in the xhtml is attached to a generated ID from JSF.

e.g. out of my_fancy_id it generates开发者_如何学Go j_idt9:my_fancy_id

Now I want to test my page with Selenium 2 Web Driver. I try to re-find my select menu:

driver.findElement(By.id("my_fancy_id"));

Of course it does't find anything because the id is changed. What is the best way to find the select menu on the page?

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Usually the id of the form is prepended to all element ids inside the form. If you don't set a form id, JSF does it for you (the 'j_idt9'). Solution: Assign an id to your form and try to use the full id in your findElementmethod, e.g.:

<h:form id="myForm">
 ...
</h:form>

Call it this way:

driver.findElement(By.id("myForm:my_fancy_id"));

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or you can add <h:form prependId="false"> so that the id of the form does not get prepended

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You set the component identifier on controls; the renderers emit the client identifier to the markup.

This allows JSF to emit valid HTML ids (they must be unique) even in the face of templates and complex controls. A control will be namespaced by any parent that is a NamingContainer (such as a form).

In some containers, the client identifier will be namespaced by the view, but this generally only happens in portlet environments.

Some component libraries (like Tomahawk) have a forceId attribute, but care must be exercised in using them. I wrote a more extensive post on client identifiers here.