diff options
Diffstat (limited to 'test/test_coverage.py')
| -rw-r--r-- | test/test_coverage.py | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/test/test_coverage.py b/test/test_coverage.py index 30ac4b8c..2d08281f 100644 --- a/test/test_coverage.py +++ b/test/test_coverage.py @@ -1704,6 +1704,51 @@ class RecursionTest(CoverageTest): [1,2,3,5,7], "") +class PyexpatTest(CoverageTest): + """Pyexpat screws up tracing. Make sure we've counter-defended properly.""" + def testPyexpat(self): + # pyexpat calls the trace function explicitly (inexplicably), and does + # it wrong for exceptions. Parsing a DOCTYPE for some reason throws + # an exception internally, and triggers its wrong behavior. This test + # checks that our fake PyTrace_RETURN hack in tracer.c works. It will + # also detect if the pyexpat bug is fixed unbeknownst to us, meaning + # we'd see two RETURNs where there should only be one. + + self.makeFile("trydom.py", """\ + import xml.dom.minidom + + XML = '''\\ + <!DOCTYPE fooey SYSTEM "http://www.example.com/example.dtd"> + <root><child/><child/></root> + ''' + + def foo(): + dom = xml.dom.minidom.parseString(XML) + assert len(dom.getElementsByTagName('child')) == 2 + print "Parsed" + + foo() + """) + + self.makeFile("outer.py", "\n"*100 + "import trydom\nprint 'done'\n") + + cov = coverage.coverage() + cov.erase() + + # Import the python file, executing it. + cov.start() + self.importModule("outer") + cov.stop() + + _, statements, missing, _ = cov.analysis("trydom.py") + self.assertEqual(statements, [1,3,8,9,10,11,13]) + self.assertEqual(missing, []) + + _, statements, missing, _ = cov.analysis("outer.py") + self.assertEqual(statements, [101,102]) + self.assertEqual(missing, []) + + if __name__ == '__main__': print "Testing under Python version: %s" % sys.version unittest.main() @@ -1714,4 +1759,4 @@ if __name__ == '__main__': # in an expression!) # TODO: Generator comprehensions? # TODO: Constant if tests ("if 1:"). Py 2.4 doesn't execute them. -# TODO: There are no tests for analysis2 directly.
\ No newline at end of file +# TODO: There are no tests for analysis2 directly. |