#!/usr/bin/python

import sys, libxml2

libxml2.debugMemory(True)

expect="""--> Invalid expression

--> Invalid expression

--> Invalid expression

--> Invalid expression

--> Invalid expression

--> Invalid expression

--> Invalid expression

--> Invalid expression

--> Invalid expression

--> Invalid expression

"""

err=""

def callback(ctx, str):

     global err

     err = err + "%s %s" % (ctx, str)

libxml2.registerErrorHandler(callback, "-->")

doc = libxml2.parseDoc("<fish/>")

ctxt = doc.xpathNewContext()

ctxt.setContextNode(doc)

badexprs = (

	":false()", "bad:()", "bad(:)", ":bad(:)", "bad:(:)", "bad:bad(:)",

	"a:/b", "/c:/d", "//e:/f", "g://h"

	)

for expr in badexprs:

	try:

		ctxt.xpathEval(expr)

	except libxml2.xpathError:

	        pass

	else:

		print("Unexpectedly legal expression:", expr)

ctxt.xpathFreeContext()

doc.freeDoc()

if err != expect:

    print("error")

    print("received %s" %(err))

    print("expected %s" %(expect))

    sys.exit(1)

libxml2.cleanupParser()

leakedbytes = libxml2.debugMemory(True)

if leakedbytes == 0:

	print("OK")

else:

	print("Memory leak", leakedbytes, "bytes")

	# drop file to .memdump file in cwd, but won't work if not compiled in

	libxml2.dumpMemory()