Attachment 43844 Details for Bug 34745 – Work in progress unit test for gdb python prettyprinting hooks for (String*)

Work in progress unit test for gdb python prettyprinting hooks for (String*)

selftest.py (text/plain), 3.08 KB, created by Dave Malcolm on 2011-02-25 17:17:48 UTC

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Creator: Dave Malcolm

Created: 2011-02-25 17:17:48 UTC

Size: 3.08 KB

patch

obsolete

>import unittest
>import subprocess
>import re
>
>class DebuggerTests(unittest.TestCase):
>
>    """Test that the gdb integration works"""
>
>    def run_gdb(self, *args):
>        """Runs gdb with the command line given by *args.
>
>        Returns its stdout, stderr
>        """
>        out, err = subprocess.Popen(
>            args, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
>            ).communicate()
>        return out, err
>
>    def run_under_gdb(self, executable):
>        # We use "set breakpoint pending yes" to avoid blocking with a:
>        #   Function "foo" not defined.
>        #   Make breakpoint pending on future shared library load? (y or [n])
>
>        commands = ['set breakpoint pending yes',
>                    'break Application::Yield',
>                    'run',
>                    'up', 
>                    # at this point, we should be within Application::Execute()
>                    # with "pSVData" set up.
>
>                    # FIXME: automate registration of the debug hooks:
>                    'python import libreoffice', 
>
>                    # Verify prettyprinting of a (String*), as $1
>                    'print pSVData->maAppData->mpAppName',
>
>                    # Manually fake a NULL (String*):
>                    'set pSVData->maAppData->mpAppName = 0',
>                    # and verify prettyprinting it (as $2)
>                    'print pSVData->maAppData->mpAppName']
>
>        # print commands
>
>        # Use "commands" to generate the arguments with which to invoke "gdb":
>        args = ["gdb", "--batch"]
>        args += ['--eval-command=%s' % cmd for cmd in commands]
>        args += ["--args", executable]
>
>        if False:
>            print args
>            print ' '.join(args)
>
>        # Use "args" to invoke gdb, capturing stdout, stderr:
>        out, err = self.run_gdb(*args)
>
>        if False:
>            print out, err
>
>        # Ignore some noise on stderr due to the pending breakpoint:
>        err = err.replace('Function "Application::Yield" not defined.\n', '')
>        err = err.replace('Can\'t find member of namespace, class, struct, or union named "Application::Yield"\n'
>                          'Hint: try \'Application::Yield<TAB> or \'Application::Yield<ESC-?>\n'
>                          '(Note leading single quote.)\n',
>                          '')
>        errlines = err.splitlines()
>        err = ''
>        for errline in errlines:
>            if re.match('Detaching after fork from child process [0-9]+', errline):
>                continue
>
>            if errline.endswith('separate debug info file has no debug info'):
>                continue
>
>            err += errline + '\n'
>
>        # Ensure no unexpected error messages:
>        self.assertEqual(err, '')
>
>        return out
>
>    def test_string_prettyprinter(self):
>        out = self.run_under_gdb('/usr/lib64/openoffice.org3/program/simpress.bin') # FIXME
>        if False:
>            print out
>        self.assert_("$1 = String('soffice')\n" in out,
>                     msg=out)
>        self.assert_("$2 = NULL\n" in out,
>                     msg=out)
>
>if __name__ == '__main__':
>    unittest.main()

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Attachments on bug 34745: 43843 | 43844 | 44461

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