From 2db247f179c3ab0f350bb3c9848ccc990ad761bc Mon Sep 17 00:00:00 2001 From: Guido Günther Date: Fri, 18 Apr 2014 12:06:46 +0200 Subject: Split out and test Process --- tests/test_process.py | 124 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 124 insertions(+) create mode 100644 tests/test_process.py (limited to 'tests/test_process.py') diff --git a/tests/test_process.py b/tests/test_process.py new file mode 100644 index 0000000..da47ebd --- /dev/null +++ b/tests/test_process.py @@ -0,0 +1,124 @@ +# vim: set fileencoding=utf-8 : +# (C) 2014 Guido Günther +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +"""Test L{whatmaps.process} config""" + +import os +import sys +import unittest +import random + +from whatmaps.process import Process + +from . import context + +class TestWhatmapsProcess(unittest.TestCase): + def setUp(self): + self.tmpdir = context.new_tmpdir(__name__) + self.procfs = str(self.tmpdir) + self.pid = random.randint(1, 65535) + self.piddir = os.path.join(self.procfs, str(self.pid)) + os.mkdir(self.piddir) + self.exe = os.path.join(self.piddir, 'exe') + self.cmdline = os.path.join(self.piddir, 'cmdline') + self.maps = os.path.join(self.piddir, 'maps') + self._write_cmdline('doesnotmatter') # Write at least an empty cmdline + self._write_exe_symlink('acommand') + self._write_maps([['f32b43221000-7f32b4522000', + '---p', + '00020000', + 'fe:02', + '1704011', + '/lib/x86_64-linux-gnu/libselinux.so.1'], + ['7f32b4521000-7f32b4623000', + 'r--p', + '00020000', + 'fe:02', + '1704011', + '/lib/x86_64-linux-gnu/libselinux.so.1'], + ]) + + def _write_exe_symlink(self, name): + exe = os.path.join(str(self.tmpdir), name) + os.symlink(exe, self.exe) + + def _write_cmdline(self, text=''): + f = open(self.cmdline, 'w') + f.write(text) + f.close() + + def _write_maps(self, data): + f = open(self.maps, 'w') + f.write('\n'.join([' '.join(r) for r in data])) + f.close() + + def test_nonexistent(self): + """No exe link should create an 'empty' object""" + os.unlink(self.exe) + p = Process(self.pid, self.procfs) + self.assertIsNone(p.exe) + self.assertIsNone(p.cmdline) + + def test_deleted(self): + """Handle symlink to deleted binaries""" + exe = '/does/not/matter' + os.unlink(self.exe) + os.symlink(os.path.join(self.piddir, '%s (deleted)' % exe), + self.exe) + + p = Process(self.pid, procfs=self.procfs) + self.assertEqual(p.exe, exe) + self.assertTrue(p.deleted, True) + self.assertEqual(p.cmdline, 'doesnotmatter') + + def test_existing(self): + p = Process(self.pid, procfs=self.procfs) + exe = os.path.join(str(self.tmpdir), 'acommand') + self.assertEqual(p.exe, exe) + self.assertEqual(p.cmdline, 'doesnotmatter') + self.assertFalse(p.deleted) + self.assertEqual(str(p), + "" % self.pid) + + def test_maps(self): + """Check whether the process maps a shared object at path""" + p = Process(self.pid, procfs=self.procfs) + self.assertFalse(p.maps('/does/not/exist')) + self.assertTrue(p.maps('/lib/x86_64-linux-gnu/libselinux.so.1')) + + def test_no_maps(self): + """Check if we don't fail if the process went away""" + os.unlink(self.maps) + p = Process(self.pid, procfs=self.procfs) + self.assertFalse(p.maps('/does/not/exist')) + self.assertFalse(p.maps('/lib/x86_64-linux-gnu/libselinux.so.1')) + + def test_broken_maps(self): + """Continue on unparseable map file""" + # Provoke index error by to few items in line + self._write_maps([['do', 'few', 'items']]) + p = Process(self.pid, procfs=self.procfs) + self.assertFalse(p.maps('/does/not/exist')) + self.assertFalse(p.maps('/lib/x86_64-linux-gnu/libselinux.so.1')) + + @unittest.skipIf(os.getuid() == 0, "Skip if root") + def test_broken_unreadable_map(self): + """Raise error if map file is unreadable""" + os.chmod(self.maps, 0) + p = Process(self.pid, procfs=self.procfs) + self.assertRaises(IOError, p.maps, '/does/not/exist') + + def tearDown(self): + context.teardown() -- cgit v1.2.3