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To verify if node or tag exists in XML content, you can execute an xpath expression against DOM document for that XML and count the matching nodes. matching nodes > zero – XML tag / attribute exists. matching nodes <= zero – XML tag / attribute does not exist.
contains() is a Selenium function that searches for web elements that contain a specific text within an Xpath expression. The XPath function contains offers the ability to detect elements containing partial text. They are used in any condition on Xpath. Lets take an HTML code here: <html>
XPath can be used to navigate through elements and attributes in an XML document. XPath is a syntax for defining parts of an XML document. XPath uses path expressions to navigate in XML documents. XPath contains a library of standard functions. XPath is a major element in XSLT and in XQuery.
A Parent of a context node is selected Flat element. A string of elements is normally separated by a slash in an XPath statement. You can pick the parent element by inserting two periods “..” where an element would typically be. The parent of the element to the left of the double period will be selected.
Short and sweet:
//*[@foo]
Of course you should use a more specific expression. But with [@attributeName] you get all nodes which have that attribute.
Use the following XPath expression
//*[boolean(@foo)]
If you use and xpath, this maybe can help you:
count(//*[@foo])
it will return count of node/child that have attribute foo
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