#!/usr/bin/python -u## this test exercise the XPath basic engine, parser, etc, and# allows to detect memory leaks#import sysimport libxml2 # Memory debug specificlibxml2.debugMemory(1) doc = libxml2.parseFile("tst.xml")if doc.name != "tst.xml":    print "doc.name error"    sys.exit(1); ctxt = doc.xpathNewContext()res = ctxt.xpathEval("//*")if len(res) != 2:    print "xpath query: wrong node set size"    sys.exit(1)if res[0].name != "doc" or res[1].name != "foo":    print "xpath query: wrong node set value"    sys.exit(1)ctxt.setContextNode(res[0])res = ctxt.xpathEval("foo")if len(res) != 1:    print "xpath query: wrong node set size"    sys.exit(1)if res[0].name != "foo":    print "xpath query: wrong node set value"    sys.exit(1)doc.freeDoc()ctxt.xpathFreeContext()i = 1000while i > 0:    doc = libxml2.parseFile("tst.xml")    ctxt = doc.xpathNewContext()    res = ctxt.xpathEval("//*")    doc.freeDoc()    ctxt.xpathFreeContext()    i = i -1del ctxt # Memory debug specificlibxml2.cleanupParser()if libxml2.debugMemory(1) == 0:    print "OK"else:    print "Memory leak %d bytes" % (libxml2.debugMemory(1))    libxml2.dumpMemory()