python: add tests for stdlib xpath

Author: yoff

python/ql/test/library-tests/frameworks/stdlib/XPathExecution.py

@@ -0,0 +1,18 @@
+match = "dc:title"
+ns = {'dc': 'http://purl.org/dc/elements/1.1/'}
+
+import xml.etree.ElementTree as ET
+tree = ET.parse('country_data.xml')
+root = tree.getroot()
+
+root.find(match, namespaces=ns)  # $ MISSING: getXPath=match
+root.findall(match, namespaces=ns)  # $ MISSING: getXPath=match
+root.findtext(match, default=None, namespaces=ns)  # $ MISSING: getXPath=match
+
+from xml.etree.ElementTree import ElementTree
+tree = ElementTree()
+tree.parse("index.xhtml")
+
+tree.find(match, namespaces=ns)  # $ MISSING: getXPath=match
+tree.findall(match, namespaces=ns)  # $ MISSING: getXPath=match
+tree.findtext(match, default=None, namespaces=ns)  # $ MISSING: getXPath=match