release/src/router/libxml2/python/tests/tstxpath.py

   1 #!/usr/bin/python -u
   2 import sys
   3 import libxml2
   4
   5 #memory debug specific
   6 libxml2.debugMemory(1)
   7
   8 called = ""
   9
  10 def foo(ctx, x):
  11     global called
  12
  13     #
  14     # test that access to the XPath evaluation contexts
  15     #
  16     pctxt = libxml2.xpathParserContext(_obj=ctx)
  17     ctxt = pctxt.context()
  18     called = ctxt.function()
  19     return x + 1
  20
  21 def bar(ctxt, x):
  22     return "%d" % (x + 2)
  23
  24 doc = libxml2.parseFile("tst.xml")
  25 ctxt = doc.xpathNewContext()
  26 res = ctxt.xpathEval("//*")
  27 if len(res) != 2:
  28     print("xpath query: wrong node set size")
  29     sys.exit(1)
  30 if res[0].name != "doc" or res[1].name != "foo":
  31     print("xpath query: wrong node set value")
  32     sys.exit(1)
  33 libxml2.registerXPathFunction(ctxt._o, "foo", None, foo)
  34 libxml2.registerXPathFunction(ctxt._o, "bar", None, bar)
  35 i = 10000
  36 while i > 0:
  37     res = ctxt.xpathEval("foo(1)")
  38     if res != 2:
  39         print("xpath extension failure")
  40         sys.exit(1)
  41     i = i - 1
  42 i = 10000
  43 while i > 0:
  44     res = ctxt.xpathEval("bar(1)")
  45     if res != "3":
  46         print("xpath extension failure got %s expecting '3'")
  47         sys.exit(1)
  48     i = i - 1
  49 doc.freeDoc()
  50 ctxt.xpathFreeContext()
  51
  52 if called != "foo":
  53     print("xpath function: failed to access the context")
  54     print("xpath function: %s" % (called))
  55     sys.exit(1)
  56
  57 #memory debug specific
  58 libxml2.cleanupParser()
  59 if libxml2.debugMemory(1) == 0:
  60     print("OK")
  61 else:
  62     print("Memory leak %d bytes" % (libxml2.debugMemory(1)))
  63     libxml2.dumpMemory()