ganeti.utils_unittest.py 52.8 KB
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#!/usr/bin/python
#

# Copyright (C) 2006, 2007 Google Inc.
#
# 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., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.


"""Script for unittesting the utils module"""

import unittest
import os
import time
import tempfile
import os.path
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import os
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import stat
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import signal
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import socket
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import shutil
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import re
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import select
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import string
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import OpenSSL
import warnings
import distutils.version
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import glob
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import ganeti
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import testutils
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from ganeti import constants
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from ganeti import utils
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from ganeti import errors
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from ganeti.utils import IsProcessAlive, RunCmd, \
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     RemoveFile, MatchNameComponent, FormatUnit, \
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     ParseUnit, AddAuthorizedKey, RemoveAuthorizedKey, \
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     ShellQuote, ShellQuoteArgs, TcpPing, ListVisibleFiles, \
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     SetEtcHostsEntry, RemoveEtcHostsEntry, FirstFree, OwnIpAddress, \
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     TailFile, ForceDictType, SafeEncode, IsNormAbsPath, FormatTime, \
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     UnescapeAndSplit, RunParts, PathJoin, HostInfo
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from ganeti.errors import LockError, UnitParseError, GenericError, \
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     ProgrammerError, OpPrereqError
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class TestIsProcessAlive(unittest.TestCase):
  """Testing case for IsProcessAlive"""
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  def testExists(self):
    mypid = os.getpid()
    self.assert_(IsProcessAlive(mypid),
                 "can't find myself running")

  def testNotExisting(self):
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    pid_non_existing = os.fork()
    if pid_non_existing == 0:
      os._exit(0)
    elif pid_non_existing < 0:
      raise SystemError("can't fork")
    os.waitpid(pid_non_existing, 0)
    self.assert_(not IsProcessAlive(pid_non_existing),
                 "nonexisting process detected")
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class TestPidFileFunctions(unittest.TestCase):
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  """Tests for WritePidFile, RemovePidFile and ReadPidFile"""
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  def setUp(self):
    self.dir = tempfile.mkdtemp()
    self.f_dpn = lambda name: os.path.join(self.dir, "%s.pid" % name)
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    utils.DaemonPidFileName = self.f_dpn
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  def testPidFileFunctions(self):
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    pid_file = self.f_dpn('test')
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    utils.WritePidFile('test')
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    self.failUnless(os.path.exists(pid_file),
                    "PID file should have been created")
    read_pid = utils.ReadPidFile(pid_file)
    self.failUnlessEqual(read_pid, os.getpid())
    self.failUnless(utils.IsProcessAlive(read_pid))
    self.failUnlessRaises(GenericError, utils.WritePidFile, 'test')
    utils.RemovePidFile('test')
    self.failIf(os.path.exists(pid_file),
                "PID file should not exist anymore")
    self.failUnlessEqual(utils.ReadPidFile(pid_file), 0,
                         "ReadPidFile should return 0 for missing pid file")
    fh = open(pid_file, "w")
    fh.write("blah\n")
    fh.close()
    self.failUnlessEqual(utils.ReadPidFile(pid_file), 0,
                         "ReadPidFile should return 0 for invalid pid file")
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    utils.RemovePidFile('test')
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    self.failIf(os.path.exists(pid_file),
                "PID file should not exist anymore")
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  def testKill(self):
    pid_file = self.f_dpn('child')
    r_fd, w_fd = os.pipe()
    new_pid = os.fork()
    if new_pid == 0: #child
      utils.WritePidFile('child')
      os.write(w_fd, 'a')
      signal.pause()
      os._exit(0)
      return
    # else we are in the parent
    # wait until the child has written the pid file
    os.read(r_fd, 1)
    read_pid = utils.ReadPidFile(pid_file)
    self.failUnlessEqual(read_pid, new_pid)
    self.failUnless(utils.IsProcessAlive(new_pid))
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    utils.KillProcess(new_pid, waitpid=True)
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    self.failIf(utils.IsProcessAlive(new_pid))
    utils.RemovePidFile('child')
    self.failUnlessRaises(ProgrammerError, utils.KillProcess, 0)

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  def tearDown(self):
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    for name in os.listdir(self.dir):
      os.unlink(os.path.join(self.dir, name))
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    os.rmdir(self.dir)

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class TestRunCmd(testutils.GanetiTestCase):
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  """Testing case for the RunCmd function"""

  def setUp(self):
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    testutils.GanetiTestCase.setUp(self)
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    self.magic = time.ctime() + " ganeti test"
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    self.fname = self._CreateTempFile()
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  def testOk(self):
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    """Test successful exit code"""
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    result = RunCmd("/bin/sh -c 'exit 0'")
    self.assertEqual(result.exit_code, 0)
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    self.assertEqual(result.output, "")
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  def testFail(self):
    """Test fail exit code"""
    result = RunCmd("/bin/sh -c 'exit 1'")
    self.assertEqual(result.exit_code, 1)
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    self.assertEqual(result.output, "")
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  def testStdout(self):
    """Test standard output"""
    cmd = 'echo -n "%s"' % self.magic
    result = RunCmd("/bin/sh -c '%s'" % cmd)
    self.assertEqual(result.stdout, self.magic)
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    result = RunCmd("/bin/sh -c '%s'" % cmd, output=self.fname)
    self.assertEqual(result.output, "")
    self.assertFileContent(self.fname, self.magic)
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  def testStderr(self):
    """Test standard error"""
    cmd = 'echo -n "%s"' % self.magic
    result = RunCmd("/bin/sh -c '%s' 1>&2" % cmd)
    self.assertEqual(result.stderr, self.magic)
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    result = RunCmd("/bin/sh -c '%s' 1>&2" % cmd, output=self.fname)
    self.assertEqual(result.output, "")
    self.assertFileContent(self.fname, self.magic)
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  def testCombined(self):
    """Test combined output"""
    cmd = 'echo -n "A%s"; echo -n "B%s" 1>&2' % (self.magic, self.magic)
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    expected = "A" + self.magic + "B" + self.magic
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    result = RunCmd("/bin/sh -c '%s'" % cmd)
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    self.assertEqual(result.output, expected)
    result = RunCmd("/bin/sh -c '%s'" % cmd, output=self.fname)
    self.assertEqual(result.output, "")
    self.assertFileContent(self.fname, expected)
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  def testSignal(self):
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    """Test signal"""
    result = RunCmd(["python", "-c", "import os; os.kill(os.getpid(), 15)"])
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    self.assertEqual(result.signal, 15)
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    self.assertEqual(result.output, "")
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  def testListRun(self):
    """Test list runs"""
    result = RunCmd(["true"])
    self.assertEqual(result.signal, None)
    self.assertEqual(result.exit_code, 0)
    result = RunCmd(["/bin/sh", "-c", "exit 1"])
    self.assertEqual(result.signal, None)
    self.assertEqual(result.exit_code, 1)
    result = RunCmd(["echo", "-n", self.magic])
    self.assertEqual(result.signal, None)
    self.assertEqual(result.exit_code, 0)
    self.assertEqual(result.stdout, self.magic)

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  def testFileEmptyOutput(self):
    """Test file output"""
    result = RunCmd(["true"], output=self.fname)
    self.assertEqual(result.signal, None)
    self.assertEqual(result.exit_code, 0)
    self.assertFileContent(self.fname, "")

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  def testLang(self):
    """Test locale environment"""
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    old_env = os.environ.copy()
    try:
      os.environ["LANG"] = "en_US.UTF-8"
      os.environ["LC_ALL"] = "en_US.UTF-8"
      result = RunCmd(["locale"])
      for line in result.output.splitlines():
        key, value = line.split("=", 1)
        # Ignore these variables, they're overridden by LC_ALL
        if key == "LANG" or key == "LANGUAGE":
          continue
        self.failIf(value and value != "C" and value != '"C"',
            "Variable %s is set to the invalid value '%s'" % (key, value))
    finally:
      os.environ = old_env
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  def testDefaultCwd(self):
    """Test default working directory"""
    self.failUnlessEqual(RunCmd(["pwd"]).stdout.strip(), "/")

  def testCwd(self):
    """Test default working directory"""
    self.failUnlessEqual(RunCmd(["pwd"], cwd="/").stdout.strip(), "/")
    self.failUnlessEqual(RunCmd(["pwd"], cwd="/tmp").stdout.strip(), "/tmp")
    cwd = os.getcwd()
    self.failUnlessEqual(RunCmd(["pwd"], cwd=cwd).stdout.strip(), cwd)

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  def testResetEnv(self):
    """Test environment reset functionality"""
    self.failUnlessEqual(RunCmd(["env"], reset_env=True).stdout.strip(), "")
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    self.failUnlessEqual(RunCmd(["env"], reset_env=True,
                                env={"FOO": "bar",}).stdout.strip(), "FOO=bar")
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class TestRunParts(unittest.TestCase):
  """Testing case for the RunParts function"""

  def setUp(self):
    self.rundir = tempfile.mkdtemp(prefix="ganeti-test", suffix=".tmp")

  def tearDown(self):
    shutil.rmtree(self.rundir)

  def testEmpty(self):
    """Test on an empty dir"""
    self.failUnlessEqual(RunParts(self.rundir, reset_env=True), [])

  def testSkipWrongName(self):
    """Test that wrong files are skipped"""
    fname = os.path.join(self.rundir, "00test.dot")
    utils.WriteFile(fname, data="")
    os.chmod(fname, stat.S_IREAD | stat.S_IEXEC)
    relname = os.path.basename(fname)
    self.failUnlessEqual(RunParts(self.rundir, reset_env=True),
                         [(relname, constants.RUNPARTS_SKIP, None)])

  def testSkipNonExec(self):
    """Test that non executable files are skipped"""
    fname = os.path.join(self.rundir, "00test")
    utils.WriteFile(fname, data="")
    relname = os.path.basename(fname)
    self.failUnlessEqual(RunParts(self.rundir, reset_env=True),
                         [(relname, constants.RUNPARTS_SKIP, None)])

  def testError(self):
    """Test error on a broken executable"""
    fname = os.path.join(self.rundir, "00test")
    utils.WriteFile(fname, data="")
    os.chmod(fname, stat.S_IREAD | stat.S_IEXEC)
    (relname, status, error) = RunParts(self.rundir, reset_env=True)[0]
    self.failUnlessEqual(relname, os.path.basename(fname))
    self.failUnlessEqual(status, constants.RUNPARTS_ERR)
    self.failUnless(error)

  def testSorted(self):
    """Test executions are sorted"""
    files = []
    files.append(os.path.join(self.rundir, "64test"))
    files.append(os.path.join(self.rundir, "00test"))
    files.append(os.path.join(self.rundir, "42test"))

    for fname in files:
      utils.WriteFile(fname, data="")

    results = RunParts(self.rundir, reset_env=True)

    for fname in sorted(files):
      self.failUnlessEqual(os.path.basename(fname), results.pop(0)[0])

  def testOk(self):
    """Test correct execution"""
    fname = os.path.join(self.rundir, "00test")
    utils.WriteFile(fname, data="#!/bin/sh\n\necho -n ciao")
    os.chmod(fname, stat.S_IREAD | stat.S_IEXEC)
    (relname, status, runresult) = RunParts(self.rundir, reset_env=True)[0]
    self.failUnlessEqual(relname, os.path.basename(fname))
    self.failUnlessEqual(status, constants.RUNPARTS_RUN)
    self.failUnlessEqual(runresult.stdout, "ciao")

  def testRunFail(self):
    """Test correct execution, with run failure"""
    fname = os.path.join(self.rundir, "00test")
    utils.WriteFile(fname, data="#!/bin/sh\n\nexit 1")
    os.chmod(fname, stat.S_IREAD | stat.S_IEXEC)
    (relname, status, runresult) = RunParts(self.rundir, reset_env=True)[0]
    self.failUnlessEqual(relname, os.path.basename(fname))
    self.failUnlessEqual(status, constants.RUNPARTS_RUN)
    self.failUnlessEqual(runresult.exit_code, 1)
    self.failUnless(runresult.failed)

  def testRunMix(self):
    files = []
    files.append(os.path.join(self.rundir, "00test"))
    files.append(os.path.join(self.rundir, "42test"))
    files.append(os.path.join(self.rundir, "64test"))
    files.append(os.path.join(self.rundir, "99test"))

    files.sort()

    # 1st has errors in execution
    utils.WriteFile(files[0], data="#!/bin/sh\n\nexit 1")
    os.chmod(files[0], stat.S_IREAD | stat.S_IEXEC)

    # 2nd is skipped
    utils.WriteFile(files[1], data="")

    # 3rd cannot execute properly
    utils.WriteFile(files[2], data="")
    os.chmod(files[2], stat.S_IREAD | stat.S_IEXEC)

    # 4th execs
    utils.WriteFile(files[3], data="#!/bin/sh\n\necho -n ciao")
    os.chmod(files[3], stat.S_IREAD | stat.S_IEXEC)

    results = RunParts(self.rundir, reset_env=True)

    (relname, status, runresult) = results[0]
    self.failUnlessEqual(relname, os.path.basename(files[0]))
    self.failUnlessEqual(status, constants.RUNPARTS_RUN)
    self.failUnlessEqual(runresult.exit_code, 1)
    self.failUnless(runresult.failed)

    (relname, status, runresult) = results[1]
    self.failUnlessEqual(relname, os.path.basename(files[1]))
    self.failUnlessEqual(status, constants.RUNPARTS_SKIP)
    self.failUnlessEqual(runresult, None)

    (relname, status, runresult) = results[2]
    self.failUnlessEqual(relname, os.path.basename(files[2]))
    self.failUnlessEqual(status, constants.RUNPARTS_ERR)
    self.failUnless(runresult)

    (relname, status, runresult) = results[3]
    self.failUnlessEqual(relname, os.path.basename(files[3]))
    self.failUnlessEqual(status, constants.RUNPARTS_RUN)
    self.failUnlessEqual(runresult.output, "ciao")
    self.failUnlessEqual(runresult.exit_code, 0)
    self.failUnless(not runresult.failed)


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class TestRemoveFile(unittest.TestCase):
  """Test case for the RemoveFile function"""

  def setUp(self):
    """Create a temp dir and file for each case"""
    self.tmpdir = tempfile.mkdtemp('', 'ganeti-unittest-')
    fd, self.tmpfile = tempfile.mkstemp('', '', self.tmpdir)
    os.close(fd)

  def tearDown(self):
    if os.path.exists(self.tmpfile):
      os.unlink(self.tmpfile)
    os.rmdir(self.tmpdir)


  def testIgnoreDirs(self):
    """Test that RemoveFile() ignores directories"""
    self.assertEqual(None, RemoveFile(self.tmpdir))


  def testIgnoreNotExisting(self):
    """Test that RemoveFile() ignores non-existing files"""
    RemoveFile(self.tmpfile)
    RemoveFile(self.tmpfile)


  def testRemoveFile(self):
    """Test that RemoveFile does remove a file"""
    RemoveFile(self.tmpfile)
    if os.path.exists(self.tmpfile):
      self.fail("File '%s' not removed" % self.tmpfile)


  def testRemoveSymlink(self):
    """Test that RemoveFile does remove symlinks"""
    symlink = self.tmpdir + "/symlink"
    os.symlink("no-such-file", symlink)
    RemoveFile(symlink)
    if os.path.exists(symlink):
      self.fail("File '%s' not removed" % symlink)
    os.symlink(self.tmpfile, symlink)
    RemoveFile(symlink)
    if os.path.exists(symlink):
      self.fail("File '%s' not removed" % symlink)


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class TestRename(unittest.TestCase):
  """Test case for RenameFile"""

  def setUp(self):
    """Create a temporary directory"""
    self.tmpdir = tempfile.mkdtemp()
    self.tmpfile = os.path.join(self.tmpdir, "test1")

    # Touch the file
    open(self.tmpfile, "w").close()

  def tearDown(self):
    """Remove temporary directory"""
    shutil.rmtree(self.tmpdir)

  def testSimpleRename1(self):
    """Simple rename 1"""
    utils.RenameFile(self.tmpfile, os.path.join(self.tmpdir, "xyz"))
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    self.assert_(os.path.isfile(os.path.join(self.tmpdir, "xyz")))
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  def testSimpleRename2(self):
    """Simple rename 2"""
    utils.RenameFile(self.tmpfile, os.path.join(self.tmpdir, "xyz"),
                     mkdir=True)
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    self.assert_(os.path.isfile(os.path.join(self.tmpdir, "xyz")))
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  def testRenameMkdir(self):
    """Rename with mkdir"""
    utils.RenameFile(self.tmpfile, os.path.join(self.tmpdir, "test/xyz"),
                     mkdir=True)
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    self.assert_(os.path.isdir(os.path.join(self.tmpdir, "test")))
    self.assert_(os.path.isfile(os.path.join(self.tmpdir, "test/xyz")))

    utils.RenameFile(os.path.join(self.tmpdir, "test/xyz"),
                     os.path.join(self.tmpdir, "test/foo/bar/baz"),
                     mkdir=True)
    self.assert_(os.path.isdir(os.path.join(self.tmpdir, "test")))
    self.assert_(os.path.isdir(os.path.join(self.tmpdir, "test/foo/bar")))
    self.assert_(os.path.isfile(os.path.join(self.tmpdir, "test/foo/bar/baz")))
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class TestMatchNameComponent(unittest.TestCase):
  """Test case for the MatchNameComponent function"""

  def testEmptyList(self):
    """Test that there is no match against an empty list"""

    self.failUnlessEqual(MatchNameComponent("", []), None)
    self.failUnlessEqual(MatchNameComponent("test", []), None)

  def testSingleMatch(self):
    """Test that a single match is performed correctly"""
    mlist = ["test1.example.com", "test2.example.com", "test3.example.com"]
    for key in "test2", "test2.example", "test2.example.com":
      self.failUnlessEqual(MatchNameComponent(key, mlist), mlist[1])

  def testMultipleMatches(self):
    """Test that a multiple match is returned as None"""
    mlist = ["test1.example.com", "test1.example.org", "test1.example.net"]
    for key in "test1", "test1.example":
      self.failUnlessEqual(MatchNameComponent(key, mlist), None)

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  def testFullMatch(self):
    """Test that a full match is returned correctly"""
    key1 = "test1"
    key2 = "test1.example"
    mlist = [key2, key2 + ".com"]
    self.failUnlessEqual(MatchNameComponent(key1, mlist), None)
    self.failUnlessEqual(MatchNameComponent(key2, mlist), key2)

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  def testCaseInsensitivePartialMatch(self):
    """Test for the case_insensitive keyword"""
    mlist = ["test1.example.com", "test2.example.net"]
    self.assertEqual(MatchNameComponent("test2", mlist, case_sensitive=False),
                     "test2.example.net")
    self.assertEqual(MatchNameComponent("Test2", mlist, case_sensitive=False),
                     "test2.example.net")
    self.assertEqual(MatchNameComponent("teSt2", mlist, case_sensitive=False),
                     "test2.example.net")
    self.assertEqual(MatchNameComponent("TeSt2", mlist, case_sensitive=False),
                     "test2.example.net")


  def testCaseInsensitiveFullMatch(self):
    mlist = ["ts1.ex", "ts1.ex.org", "ts2.ex", "Ts2.ex"]
    # Between the two ts1 a full string match non-case insensitive should work
    self.assertEqual(MatchNameComponent("Ts1", mlist, case_sensitive=False),
                     None)
    self.assertEqual(MatchNameComponent("Ts1.ex", mlist, case_sensitive=False),
                     "ts1.ex")
    self.assertEqual(MatchNameComponent("ts1.ex", mlist, case_sensitive=False),
                     "ts1.ex")
    # Between the two ts2 only case differs, so only case-match works
    self.assertEqual(MatchNameComponent("ts2.ex", mlist, case_sensitive=False),
                     "ts2.ex")
    self.assertEqual(MatchNameComponent("Ts2.ex", mlist, case_sensitive=False),
                     "Ts2.ex")
    self.assertEqual(MatchNameComponent("TS2.ex", mlist, case_sensitive=False),
                     None)

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class TestTimestampForFilename(unittest.TestCase):
  def test(self):
    self.assert_("." not in utils.TimestampForFilename())
    self.assert_(":" not in utils.TimestampForFilename())


class TestCreateBackup(testutils.GanetiTestCase):
  def setUp(self):
    testutils.GanetiTestCase.setUp(self)

    self.tmpdir = tempfile.mkdtemp()

  def tearDown(self):
    testutils.GanetiTestCase.tearDown(self)

    shutil.rmtree(self.tmpdir)

  def testEmpty(self):
    filename = utils.PathJoin(self.tmpdir, "config.data")
    utils.WriteFile(filename, data="")
    bname = utils.CreateBackup(filename)
    self.assertFileContent(bname, "")
    self.assertEqual(len(glob.glob("%s*" % filename)), 2)
    utils.CreateBackup(filename)
    self.assertEqual(len(glob.glob("%s*" % filename)), 3)
    utils.CreateBackup(filename)
    self.assertEqual(len(glob.glob("%s*" % filename)), 4)

    fifoname = utils.PathJoin(self.tmpdir, "fifo")
    os.mkfifo(fifoname)
    self.assertRaises(errors.ProgrammerError, utils.CreateBackup, fifoname)

  def testContent(self):
    bkpcount = 0
    for data in ["", "X", "Hello World!\n" * 100, "Binary data\0\x01\x02\n"]:
      for rep in [1, 2, 10, 127]:
        testdata = data * rep

        filename = utils.PathJoin(self.tmpdir, "test.data_")
        utils.WriteFile(filename, data=testdata)
        self.assertFileContent(filename, testdata)

        for _ in range(3):
          bname = utils.CreateBackup(filename)
          bkpcount += 1
          self.assertFileContent(bname, testdata)
          self.assertEqual(len(glob.glob("%s*" % filename)), 1 + bkpcount)


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class TestFormatUnit(unittest.TestCase):
  """Test case for the FormatUnit function"""

  def testMiB(self):
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    self.assertEqual(FormatUnit(1, 'h'), '1M')
    self.assertEqual(FormatUnit(100, 'h'), '100M')
    self.assertEqual(FormatUnit(1023, 'h'), '1023M')

    self.assertEqual(FormatUnit(1, 'm'), '1')
    self.assertEqual(FormatUnit(100, 'm'), '100')
    self.assertEqual(FormatUnit(1023, 'm'), '1023')

    self.assertEqual(FormatUnit(1024, 'm'), '1024')
    self.assertEqual(FormatUnit(1536, 'm'), '1536')
    self.assertEqual(FormatUnit(17133, 'm'), '17133')
    self.assertEqual(FormatUnit(1024 * 1024 - 1, 'm'), '1048575')
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  def testGiB(self):
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    self.assertEqual(FormatUnit(1024, 'h'), '1.0G')
    self.assertEqual(FormatUnit(1536, 'h'), '1.5G')
    self.assertEqual(FormatUnit(17133, 'h'), '16.7G')
    self.assertEqual(FormatUnit(1024 * 1024 - 1, 'h'), '1024.0G')

    self.assertEqual(FormatUnit(1024, 'g'), '1.0')
    self.assertEqual(FormatUnit(1536, 'g'), '1.5')
    self.assertEqual(FormatUnit(17133, 'g'), '16.7')
    self.assertEqual(FormatUnit(1024 * 1024 - 1, 'g'), '1024.0')

    self.assertEqual(FormatUnit(1024 * 1024, 'g'), '1024.0')
    self.assertEqual(FormatUnit(5120 * 1024, 'g'), '5120.0')
    self.assertEqual(FormatUnit(29829 * 1024, 'g'), '29829.0')
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  def testTiB(self):
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    self.assertEqual(FormatUnit(1024 * 1024, 'h'), '1.0T')
    self.assertEqual(FormatUnit(5120 * 1024, 'h'), '5.0T')
    self.assertEqual(FormatUnit(29829 * 1024, 'h'), '29.1T')
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    self.assertEqual(FormatUnit(1024 * 1024, 't'), '1.0')
    self.assertEqual(FormatUnit(5120 * 1024, 't'), '5.0')
    self.assertEqual(FormatUnit(29829 * 1024, 't'), '29.1')
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class TestParseUnit(unittest.TestCase):
  """Test case for the ParseUnit function"""

  SCALES = (('', 1),
            ('M', 1), ('G', 1024), ('T', 1024 * 1024),
            ('MB', 1), ('GB', 1024), ('TB', 1024 * 1024),
            ('MiB', 1), ('GiB', 1024), ('TiB', 1024 * 1024))

  def testRounding(self):
    self.assertEqual(ParseUnit('0'), 0)
    self.assertEqual(ParseUnit('1'), 4)
    self.assertEqual(ParseUnit('2'), 4)
    self.assertEqual(ParseUnit('3'), 4)

    self.assertEqual(ParseUnit('124'), 124)
    self.assertEqual(ParseUnit('125'), 128)
    self.assertEqual(ParseUnit('126'), 128)
    self.assertEqual(ParseUnit('127'), 128)
    self.assertEqual(ParseUnit('128'), 128)
    self.assertEqual(ParseUnit('129'), 132)
    self.assertEqual(ParseUnit('130'), 132)

  def testFloating(self):
    self.assertEqual(ParseUnit('0'), 0)
    self.assertEqual(ParseUnit('0.5'), 4)
    self.assertEqual(ParseUnit('1.75'), 4)
    self.assertEqual(ParseUnit('1.99'), 4)
    self.assertEqual(ParseUnit('2.00'), 4)
    self.assertEqual(ParseUnit('2.01'), 4)
    self.assertEqual(ParseUnit('3.99'), 4)
    self.assertEqual(ParseUnit('4.00'), 4)
    self.assertEqual(ParseUnit('4.01'), 8)
    self.assertEqual(ParseUnit('1.5G'), 1536)
    self.assertEqual(ParseUnit('1.8G'), 1844)
    self.assertEqual(ParseUnit('8.28T'), 8682212)

  def testSuffixes(self):
    for sep in ('', ' ', '   ', "\t", "\t "):
      for suffix, scale in TestParseUnit.SCALES:
        for func in (lambda x: x, str.lower, str.upper):
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          self.assertEqual(ParseUnit('1024' + sep + func(suffix)),
                           1024 * scale)
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  def testInvalidInput(self):
    for sep in ('-', '_', ',', 'a'):
      for suffix, _ in TestParseUnit.SCALES:
        self.assertRaises(UnitParseError, ParseUnit, '1' + sep + suffix)

    for suffix, _ in TestParseUnit.SCALES:
      self.assertRaises(UnitParseError, ParseUnit, '1,3' + suffix)


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class TestSshKeys(testutils.GanetiTestCase):
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  """Test case for the AddAuthorizedKey function"""

  KEY_A = 'ssh-dss AAAAB3NzaC1w5256closdj32mZaQU root@key-a'
  KEY_B = ('command="/usr/bin/fooserver -t --verbose",from="1.2.3.4" '
           'ssh-dss AAAAB3NzaC1w520smc01ms0jfJs22 root@key-b')

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  def setUp(self):
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    testutils.GanetiTestCase.setUp(self)
    self.tmpname = self._CreateTempFile()
    handle = open(self.tmpname, 'w')
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    try:
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      handle.write("%s\n" % TestSshKeys.KEY_A)
      handle.write("%s\n" % TestSshKeys.KEY_B)
    finally:
      handle.close()
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  def testAddingNewKey(self):
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    AddAuthorizedKey(self.tmpname, 'ssh-dss AAAAB3NzaC1kc3MAAACB root@test')
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    self.assertFileContent(self.tmpname,
      "ssh-dss AAAAB3NzaC1w5256closdj32mZaQU root@key-a\n"
      'command="/usr/bin/fooserver -t --verbose",from="1.2.3.4"'
      " ssh-dss AAAAB3NzaC1w520smc01ms0jfJs22 root@key-b\n"
      "ssh-dss AAAAB3NzaC1kc3MAAACB root@test\n")
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  def testAddingAlmostButNotCompletelyTheSameKey(self):
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    AddAuthorizedKey(self.tmpname,
        'ssh-dss AAAAB3NzaC1w5256closdj32mZaQU root@test')

    self.assertFileContent(self.tmpname,
      "ssh-dss AAAAB3NzaC1w5256closdj32mZaQU root@key-a\n"
      'command="/usr/bin/fooserver -t --verbose",from="1.2.3.4"'
      " ssh-dss AAAAB3NzaC1w520smc01ms0jfJs22 root@key-b\n"
      "ssh-dss AAAAB3NzaC1w5256closdj32mZaQU root@test\n")
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  def testAddingExistingKeyWithSomeMoreSpaces(self):
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    AddAuthorizedKey(self.tmpname,
        'ssh-dss  AAAAB3NzaC1w5256closdj32mZaQU   root@key-a')
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    self.assertFileContent(self.tmpname,
      "ssh-dss AAAAB3NzaC1w5256closdj32mZaQU root@key-a\n"
      'command="/usr/bin/fooserver -t --verbose",from="1.2.3.4"'
      " ssh-dss AAAAB3NzaC1w520smc01ms0jfJs22 root@key-b\n")
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  def testRemovingExistingKeyWithSomeMoreSpaces(self):
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    RemoveAuthorizedKey(self.tmpname,
        'ssh-dss  AAAAB3NzaC1w5256closdj32mZaQU   root@key-a')
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    self.assertFileContent(self.tmpname,
      'command="/usr/bin/fooserver -t --verbose",from="1.2.3.4"'
      " ssh-dss AAAAB3NzaC1w520smc01ms0jfJs22 root@key-b\n")
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  def testRemovingNonExistingKey(self):
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    RemoveAuthorizedKey(self.tmpname,
        'ssh-dss  AAAAB3Nsdfj230xxjxJjsjwjsjdjU   root@test')
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    self.assertFileContent(self.tmpname,
      "ssh-dss AAAAB3NzaC1w5256closdj32mZaQU root@key-a\n"
      'command="/usr/bin/fooserver -t --verbose",from="1.2.3.4"'
      " ssh-dss AAAAB3NzaC1w520smc01ms0jfJs22 root@key-b\n")
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class TestEtcHosts(testutils.GanetiTestCase):
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  """Test functions modifying /etc/hosts"""

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  def setUp(self):
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    testutils.GanetiTestCase.setUp(self)
    self.tmpname = self._CreateTempFile()
    handle = open(self.tmpname, 'w')
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    try:
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      handle.write('# This is a test file for /etc/hosts\n')
      handle.write('127.0.0.1\tlocalhost\n')
      handle.write('192.168.1.1 router gw\n')
    finally:
      handle.close()
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  def testSettingNewIp(self):
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    self.assertFileContent(self.tmpname,
      "# This is a test file for /etc/hosts\n"
      "127.0.0.1\tlocalhost\n"
      "192.168.1.1 router gw\n"
      "1.2.3.4\tmyhost.domain.tld myhost\n")
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    self.assertFileMode(self.tmpname, 0644)
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  def testSettingExistingIp(self):
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                     ['myhost'])
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    self.assertFileContent(self.tmpname,
      "# This is a test file for /etc/hosts\n"
      "127.0.0.1\tlocalhost\n"
      "192.168.1.1\tmyhost.domain.tld myhost\n")
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    self.assertFileMode(self.tmpname, 0644)
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  def testSettingDuplicateName(self):
    SetEtcHostsEntry(self.tmpname, '1.2.3.4', 'myhost', ['myhost'])

    self.assertFileContent(self.tmpname,
      "# This is a test file for /etc/hosts\n"
      "127.0.0.1\tlocalhost\n"
      "192.168.1.1 router gw\n"
      "1.2.3.4\tmyhost\n")
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    self.assertFileMode(self.tmpname, 0644)
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  def testRemovingExistingHost(self):
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      "# This is a test file for /etc/hosts\n"
      "127.0.0.1\tlocalhost\n"
      "192.168.1.1 gw\n")
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  def testRemovingSingleExistingHost(self):
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    self.assertFileContent(self.tmpname,
      "# This is a test file for /etc/hosts\n"
      "192.168.1.1 router gw\n")
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    self.assertFileMode(self.tmpname, 0644)
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  def testRemovingNonExistingHost(self):
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    self.assertFileContent(self.tmpname,
      "# This is a test file for /etc/hosts\n"
      "127.0.0.1\tlocalhost\n"
      "192.168.1.1 router gw\n")
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  def testRemovingAlias(self):
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      "# This is a test file for /etc/hosts\n"
      "127.0.0.1\tlocalhost\n"
      "192.168.1.1 router\n")
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    self.assertFileMode(self.tmpname, 0644)
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class TestShellQuoting(unittest.TestCase):
  """Test case for shell quoting functions"""

  def testShellQuote(self):
    self.assertEqual(ShellQuote('abc'), "abc")
    self.assertEqual(ShellQuote('ab"c'), "'ab\"c'")
    self.assertEqual(ShellQuote("a'bc"), "'a'\\''bc'")
    self.assertEqual(ShellQuote("a b c"), "'a b c'")
    self.assertEqual(ShellQuote("a b\\ c"), "'a b\\ c'")

  def testShellQuoteArgs(self):
    self.assertEqual(ShellQuoteArgs(['a', 'b', 'c']), "a b c")
    self.assertEqual(ShellQuoteArgs(['a', 'b"', 'c']), "a 'b\"' c")
    self.assertEqual(ShellQuoteArgs(['a', 'b\'', 'c']), "a 'b'\\\''' c")


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class TestTcpPing(unittest.TestCase):
  """Testcase for TCP version of ping - against listen(2)ing port"""

  def setUp(self):
    self.listener = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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    self.listener.bind((constants.LOCALHOST_IP_ADDRESS, 0))
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    self.listenerport = self.listener.getsockname()[1]
    self.listener.listen(1)

  def tearDown(self):
    self.listener.shutdown(socket.SHUT_RDWR)
    del self.listener
    del self.listenerport

  def testTcpPingToLocalHostAccept(self):
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                         timeout=10,
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                         live_port_needed=True,
                         source=constants.LOCALHOST_IP_ADDRESS,
                         ),
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                 "failed to connect to test listener")

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    self.assert_(TcpPing(constants.LOCALHOST_IP_ADDRESS,
                         self.listenerport,
                         timeout=10,
                         live_port_needed=True,
                         ),
                 "failed to connect to test listener (no source)")

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class TestTcpPingDeaf(unittest.TestCase):
  """Testcase for TCP version of ping - against non listen(2)ing port"""

  def setUp(self):
    self.deaflistener = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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    self.deaflistenerport = self.deaflistener.getsockname()[1]

  def tearDown(self):
    del self.deaflistener
    del self.deaflistenerport

  def testTcpPingToLocalHostAcceptDeaf(self):
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                        live_port_needed=True,
                        source=constants.LOCALHOST_IP_ADDRESS,
                        ), # need successful connect(2)
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                "successfully connected to deaf listener")

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    self.failIf(TcpPing(constants.LOCALHOST_IP_ADDRESS,
                        self.deaflistenerport,
                        timeout=constants.TCP_PING_TIMEOUT,
                        live_port_needed=True,
                        ), # need successful connect(2)
                "successfully connected to deaf listener (no source addr)")

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  def testTcpPingToLocalHostNoAccept(self):
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                         live_port_needed=False,
                         source=constants.LOCALHOST_IP_ADDRESS,
                         ), # ECONNREFUSED is OK
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                 "failed to ping alive host on deaf port")

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    self.assert_(TcpPing(constants.LOCALHOST_IP_ADDRESS,
                         self.deaflistenerport,
                         timeout=constants.TCP_PING_TIMEOUT,
                         live_port_needed=False,
                         ), # ECONNREFUSED is OK
                 "failed to ping alive host on deaf port (no source addr)")

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class TestOwnIpAddress(unittest.TestCase):
  """Testcase for OwnIpAddress"""

  def testOwnLoopback(self):
    """check having the loopback ip"""
    self.failUnless(OwnIpAddress(constants.LOCALHOST_IP_ADDRESS),
                    "Should own the loopback address")

  def testNowOwnAddress(self):
    """check that I don't own an address"""

    # network 192.0.2.0/24 is reserved for test/documentation as per
    # rfc 3330, so we *should* not have an address of this range... if
    # this fails, we should extend the test to multiple addresses
    DST_IP = "192.0.2.1"
    self.failIf(OwnIpAddress(DST_IP), "Should not own IP address %s" % DST_IP)


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class TestListVisibleFiles(unittest.TestCase):
  """Test case for ListVisibleFiles"""

  def setUp(self):
    self.path = tempfile.mkdtemp()

  def tearDown(self):
    shutil.rmtree(self.path)

  def _test(self, files, expected):
    # Sort a copy
    expected = expected[:]
    expected.sort()

    for name in files:
      f = open(os.path.join(self.path, name), 'w')
      try:
        f.write("Test\n")
      finally:
        f.close()

    found = ListVisibleFiles(self.path)
    found.sort()

    self.assertEqual(found, expected)

  def testAllVisible(self):
    files = ["a", "b", "c"]
    expected = files
    self._test(files, expected)

  def testNoneVisible(self):
    files = [".a", ".b", ".c"]
    expected = []
    self._test(files, expected)

  def testSomeVisible(self):
    files = ["a", "b", ".c"]
    expected = ["a", "b"]
    self._test(files, expected)

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  def testNonAbsolutePath(self):
    self.failUnlessRaises(errors.ProgrammerError, ListVisibleFiles, "abc")

  def testNonNormalizedPath(self):
    self.failUnlessRaises(errors.ProgrammerError, ListVisibleFiles,
                          "/bin/../tmp")

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class TestNewUUID(unittest.TestCase):
  """Test case for NewUUID"""
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  _re_uuid = re.compile('^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-'
                        '[a-f0-9]{4}-[a-f0-9]{12}$')

  def runTest(self):
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class TestUniqueSequence(unittest.TestCase):
  """Test case for UniqueSequence"""

  def _test(self, input, expected):
    self.assertEqual(utils.UniqueSequence(input), expected)

  def runTest(self):
    # Ordered input
    self._test([1, 2, 3], [1, 2, 3])
    self._test([1, 1, 2, 2, 3, 3], [1, 2, 3])
    self._test([1, 2, 2, 3], [1, 2, 3])
    self._test([1, 2, 3, 3], [1, 2, 3])

    # Unordered input
    self._test([1, 2, 3, 1, 2, 3], [1, 2, 3])
    self._test([1, 1, 2, 3, 3, 1, 2], [1, 2, 3])

    # Strings
    self._test(["a", "a"], ["a"])
    self._test(["a", "b"], ["a", "b"])
    self._test(["a", "b", "a"], ["a", "b"])

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class TestFirstFree(unittest.TestCase):
  """Test case for the FirstFree function"""

  def test(self):
    """Test FirstFree"""
    self.failUnlessEqual(FirstFree([0, 1, 3]), 2)
    self.failUnlessEqual(FirstFree([]), None)
    self.failUnlessEqual(FirstFree([3, 4, 6]), 0)
    self.failUnlessEqual(FirstFree([3, 4, 6], base=3), 5)
    self.failUnlessRaises(AssertionError, FirstFree, [0, 3, 4, 6], base=3)
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class TestTailFile(testutils.GanetiTestCase):
  """Test case for the TailFile function"""

  def testEmpty(self):
    fname = self._CreateTempFile()
    self.failUnlessEqual(TailFile(fname), [])
    self.failUnlessEqual(TailFile(fname, lines=25), [])

  def testAllLines(self):
    data = ["test %d" % i for i in range(30)]
    for i in range(30):
      fname = self._CreateTempFile()
      fd = open(fname, "w")
      fd.write("\n".join(data[:i]))
      if i > 0:
        fd.write("\n")
      fd.close()
      self.failUnlessEqual(TailFile(fname, lines=i), data[:i])

  def testPartialLines(self):
    data = ["test %d" % i for i in range(30)]
    fname = self._CreateTempFile()
    fd = open(fname, "w")
    fd.write("\n".join(data))
    fd.write("\n")
    fd.close()
    for i in range(1, 30):
      self.failUnlessEqual(TailFile(fname, lines=i), data[-i:])

  def testBigFile(self):
    data = ["test %d" % i for i in range(30)]
    fname = self._CreateTempFile()
    fd = open(fname, "w")
    fd.write("X" * 1048576)
    fd.write("\n")
    fd.write("\n".join(data))
    fd.write("\n")
    fd.close()
    for i in range(1, 30):
      self.failUnlessEqual(TailFile(fname, lines=i), data[-i:])


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class _BaseFileLockTest:
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  """Test case for the FileLock class"""

  def testSharedNonblocking(self):
    self.lock.Shared(blocking=False)
    self.lock.Close()

  def testExclusiveNonblocking(self):
    self.lock.Exclusive(blocking=False)
    self.lock.Close()

  def testUnlockNonblocking(self):
    self.lock.Unlock(blocking=False)
    self.lock.Close()

  def testSharedBlocking(self):
    self.lock.Shared(blocking=True)
    self.lock.Close()

  def testExclusiveBlocking(self):
    self.lock.Exclusive(blocking=True)
    self.lock.Close()

  def testUnlockBlocking(self):
    self.lock.Unlock(blocking=True)
    self.lock.Close()

  def testSharedExclusiveUnlock(self):
    self.lock.Shared(blocking=False)
    self.lock.Exclusive(blocking=False)
    self.lock.Unlock(blocking=False)
    self.lock.Close()

  def testExclusiveSharedUnlock(self):
    self.lock.Exclusive(blocking=False)
    self.lock.Shared(blocking=False)
    self.lock.Unlock(blocking=False)
    self.lock.Close()

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  def testSimpleTimeout(self):
    # These will succeed on the first attempt, hence a short timeout
    self.lock.Shared(blocking=True, timeout=10.0)
    self.lock.Exclusive(blocking=False, timeout=10.0)
    self.lock.Unlock(blocking=True, timeout=10.0)
    self.lock.Close()

  @staticmethod
  def _TryLockInner(filename, shared, blocking):
    lock = utils.FileLock.Open(filename)

    if shared:
      fn = lock.Shared
    else:
      fn = lock.Exclusive

    try:
      # The timeout doesn't really matter as the parent process waits for us to
      # finish anyway.
      fn(blocking=blocking, timeout=0.01)
    except errors.LockError, err:
      return False

    return True

  def _TryLock(self, *args):
    return utils.RunInSeparateProcess(self._TryLockInner, self.tmpfile.name,
                                      *args)

  def testTimeout(self):
    for blocking in [True, False]:
      self.lock.Exclusive(blocking=True)
      self.failIf(self._TryLock(False, blocking))
      self.failIf(self._TryLock(True, blocking))

      self.lock.Shared(blocking=True)
      self.assert_(self._TryLock(True, blocking))
      self.failIf(self._TryLock(False, blocking))

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  def testCloseShared(self):
    self.lock.Close()
    self.assertRaises(AssertionError, self.lock.Shared, blocking=False)

  def testCloseExclusive(self):
    self.lock.Close()
    self.assertRaises(AssertionError, self.lock.Exclusive, blocking=False)

  def testCloseUnlock(self):
    self.lock.Close()
    self.assertRaises(AssertionError, self.lock.Unlock, blocking=False)


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class TestFileLockWithFilename(testutils.GanetiTestCase, _BaseFileLockTest):
  TESTDATA = "Hello World\n" * 10

  def setUp(self):
    testutils.GanetiTestCase.setUp(self)

    self.tmpfile = tempfile.NamedTemporaryFile()
    utils.WriteFile(self.tmpfile.name, data=self.TESTDATA)
    self.lock = utils.FileLock.Open(self.tmpfile.name)

    # Ensure "Open" didn't truncate file
    self.assertFileContent(self.tmpfile.name, self.TESTDATA)

  def tearDown(self):
    self.assertFileContent(self.tmpfile.name, self.TESTDATA)

    testutils.GanetiTestCase.tearDown(self)


class TestFileLockWithFileObject(unittest.TestCase, _BaseFileLockTest):
  def setUp(self):
    self.tmpfile = tempfile.NamedTemporaryFile()
    self.lock = utils.FileLock(open(self.tmpfile.name, "w"), self.tmpfile.name)


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class TestTimeFunctions(unittest.TestCase):
  """Test case for time functions"""

  def runTest(self):
    self.assertEqual(utils.SplitTime(1), (1, 0))
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    self.assertEqual(utils.SplitTime(1.5), (1, 500000))
    self.assertEqual(utils.SplitTime(1218448917.4809151), (1218448917, 480915))
    self.assertEqual(utils.SplitTime(123.48012), (123, 480120))
    self.assertEqual(utils.SplitTime(123.9996), (123, 999600))
    self.assertEqual(utils.SplitTime(123.9995), (123, 999500))
    self.assertEqual(utils.SplitTime(123.9994), (123, 999400))
    self.assertEqual(utils.SplitTime(123.999999999), (123, 999999))

    self.assertRaises(AssertionError, utils.SplitTime, -1)
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    self.assertEqual(utils.MergeTime((1, 0)), 1.0)
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    self.assertEqual(utils.MergeTime((1, 500000)), 1.5)
    self.assertEqual(utils.MergeTime((1218448917, 500000)), 1218448917.5)
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    self.assertEqual(round(utils.MergeTime((1218448917, 481000)), 3),
                     1218448917.481)
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    self.assertEqual(round(utils.MergeTime((1, 801000)), 3), 1.801)
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    self.assertRaises(AssertionError, utils.MergeTime, (0, -1))
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    self.assertRaises(AssertionError, utils.MergeTime, (0, 1000000))
    self.assertRaises(AssertionError, utils.MergeTime, (0, 9999999))
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    self.assertRaises(AssertionError, utils.MergeTime, (-1, 0))
    self.assertRaises(AssertionError, utils.MergeTime, (-9999, 0))


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class FieldSetTestCase(unittest.TestCase):
  """Test case for FieldSets"""

  def testSimpleMatch(self):
    f = utils.FieldSet("a", "b", "c", "def")
    self.failUnless(f.Matches("a"))
    self.failIf(f.Matches("d"), "Substring matched")
    self.failIf(f.Matches("defghi"), "Prefix string matched")
    self.failIf(f.NonMatching(["b", "c"]))
    self.failIf(f.NonMatching(["a", "b", "c", "def"]))
    self.failUnless(f.NonMatching(["a", "d"]))

  def testRegexMatch(self):
    f = utils.FieldSet("a", "b([0-9]+)", "c")
    self.failUnless(f.Matches("b1"))
    self.failUnless(f.Matches("b99"))
    self.failIf(f.Matches("b/1"))
    self.failIf(f.NonMatching(["b12", "c"]))
    self.failUnless(f.NonMatching(["a", "1"]))

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class TestForceDictType(unittest.TestCase):
  """Test case for ForceDictType"""

  def setUp(self):
    self.key_types = {
      'a': constants.VTYPE_INT,
      'b': constants.VTYPE_BOOL,
      'c': constants.VTYPE_STRING,
      'd': constants.VTYPE_SIZE,
      }

  def _fdt(self, dict, allowed_values=None):
    if allowed_values is None:
      ForceDictType(dict, self.key_types)
    else:
      ForceDictType(dict, self.key_types, allowed_values=allowed_values)

    return dict

  def testSimpleDict(self):
    self.assertEqual(self._fdt({}), {})
    self.assertEqual(self._fdt({'a': 1}), {'a': 1})
    self.assertEqual(self._fdt({'a': '1'}), {'a': 1})
    self.assertEqual(self._fdt({'a': 1, 'b': 1}), {'a':1, 'b': True})
    self.assertEqual(self._fdt({'b': 1, 'c': 'foo'}), {'b': True, 'c': 'foo'})
    self.assertEqual(self._fdt({'b': 1, 'c': False}), {'b': True, 'c': ''})
    self.assertEqual(self._fdt({'b': 'false'}), {'b': False})
    self.assertEqual(self._fdt({'b': 'False'}), {'b': False})
    self.assertEqual(self._fdt({'b': 'true'}), {'b': True})
    self.assertEqual(self._fdt({'b': 'True'}), {'b': True})
    self.assertEqual(self._fdt({'d': '4'}), {'d': 4})
    self.assertEqual(self._fdt({'d': '4M'}), {'d': 4})

  def testErrors(self):
    self.assertRaises(errors.TypeEnforcementError, self._fdt, {'a': 'astring'})
    self.assertRaises(errors.TypeEnforcementError, self._fdt, {'c': True})
    self.assertRaises(errors.TypeEnforcementError, self._fdt, {'d': 'astring'})
    self.assertRaises(errors.TypeEnforcementError, self._fdt, {'d': '4 L'})

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class TestIsAbsNormPath(unittest.TestCase):
  """Testing case for IsProcessAlive"""

  def _pathTestHelper(self, path, result):
    if result:
      self.assert_(IsNormAbsPath(path),
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          "Path %s should result absolute and normalized" % path)
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    else:
      self.assert_(not IsNormAbsPath(path),
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          "Path %s should not result absolute and normalized" % path)
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  def testBase(self):
    self._pathTestHelper('/etc', True)
    self._pathTestHelper('/srv', True)
    self._pathTestHelper('etc', False)
    self._pathTestHelper('/etc/../root', False)
    self._pathTestHelper('/etc/', False)

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class TestSafeEncode(unittest.TestCase):
  """Test case for SafeEncode"""

  def testAscii(self):
    for txt in [string.digits, string.letters, string.punctuation]:
      self.failUnlessEqual(txt, SafeEncode(txt))

  def testDoubleEncode(self):
    for i in range(255):
      txt = SafeEncode(chr(i))
      self.failUnlessEqual(txt, SafeEncode(txt))

  def testUnicode(self):
    # 1024 is high enough to catch non-direct ASCII mappings
    for i in range(1024):
      txt = SafeEncode(unichr(i))
      self.failUnlessEqual(txt, SafeEncode(txt))


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class TestFormatTime(unittest.TestCase):
  """Testing case for FormatTime"""

  def testNone(self):
    self.failUnlessEqual(FormatTime(None), "N/A")

  def testInvalid(self):
    self.failUnlessEqual(FormatTime(()), "N/A")

  def testNow(self):
    # tests that we accept time.time input
    FormatTime(time.time())
    # tests that we accept int input
    FormatTime(int(time.time()))


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class RunInSeparateProcess(unittest.TestCase):
  def test(self):
    for exp in [True, False]:
      def _child():
        return exp

      self.assertEqual(exp, utils.RunInSeparateProcess(_child))

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  def testArgs(self):
    for arg in [0, 1, 999, "Hello World", (1, 2, 3)]:
      def _child(carg1, carg2):
        return carg1 == "Foo" and carg2 == arg

      self.assert_(utils.RunInSeparateProcess(_child, "Foo", arg))

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  def testPid(self):
    parent_pid = os.getpid()

    def _check():
      return os.getpid() == parent_pid

    self.failIf(utils.RunInSeparateProcess(_check))

  def testSignal(self):
    def _kill():
      os.kill(os.getpid(), signal.SIGTERM)

    self.assertRaises(errors.GenericError,
                      utils.RunInSeparateProcess, _kill)

  def testException(self):
    def _exc():
      raise errors.GenericError("This is a test")

    self.assertRaises(errors.GenericError,
                      utils.RunInSeparateProcess, _exc)


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class TestFingerprintFile(unittest.TestCase):
  def setUp(self):
    self.tmpfile = tempfile.NamedTemporaryFile()

  def test(self):
    self.assertEqual(utils._FingerprintFile(self.tmpfile.name),
                     "da39a3ee5e6b4b0d3255bfef95601890afd80709")

    utils.WriteFile(self.tmpfile.name, data="Hello World\n")
    self.assertEqual(utils._FingerprintFile(self.tmpfile.name),
                     "648a6a6ffffdaa0badb23b8baf90b6168dd16b3a")


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class TestUnescapeAndSplit(unittest.TestCase):
  """Testing case for UnescapeAndSplit"""

  def setUp(self):
    # testing more that one separator for regexp safety
    self._seps = [",", "+", "."]

  def testSimple(self):
    a = ["a", "b", "c", "d"]
    for sep in self._seps:
      self.failUnlessEqual(UnescapeAndSplit(sep.join(a), sep=sep), a)

  def testEscape(self):
    for sep in self._seps:
      a = ["a", "b\\" + sep + "c", "d"]
      b = ["a", "b" + sep + "c", "d"]
      self.failUnlessEqual(UnescapeAndSplit(sep.join(a), sep=sep), b)

  def testDoubleEscape(self):
    for sep in self._seps:
      a = ["a", "b\\\\", "c", "d"]
      b = ["a", "b\\", "c", "d"]
      self.failUnlessEqual(UnescapeAndSplit(sep.join(a), sep=sep), b)

  def testThreeEscape(self):
    for sep in self._seps:
      a = ["a", "b\\\\\\" + sep + "c", "d"]
      b = ["a", "b\\" + sep + "c", "d"]
      self.failUnlessEqual(UnescapeAndSplit(sep.join(a), sep=sep), b)


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class TestPathJoin(unittest.TestCase):
  """Testing case for PathJoin"""

  def testBasicItems(self):
    mlist = ["/a", "b", "c"]
    self.failUnlessEqual(PathJoin(*mlist), "/".join(mlist))

  def testNonAbsPrefix(self):
    self.failUnlessRaises(ValueError, PathJoin, "a", "b")

  def testBackTrack(self):
    self.failUnlessRaises(ValueError, PathJoin, "/a", "b/../c")

  def testMultiAbs(self):
    self.failUnlessRaises(ValueError, PathJoin, "/a", "/b")


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class TestHostInfo(unittest.TestCase):
  """Testing case for HostInfo"""

  def testUppercase(self):
    data = "AbC.example.com"
    self.failUnlessEqual(HostInfo.NormalizeName(data), data.lower())

  def testTooLongName(self):
    data = "a.b." + "c" * 255
    self.failUnlessRaises(OpPrereqError, HostInfo.NormalizeName, data)

  def testTrailingDot(self):
    data = "a.b.c"
    self.failUnlessEqual(HostInfo.NormalizeName(data + "."), data)

  def testInvalidName(self):
    data = [
      "a b",
      "a/b",
      ".a.b",
      "a..b",
      ]
    for value in data:
      self.failUnlessRaises(OpPrereqError, HostInfo.NormalizeName, value)

  def testValidName(self):
    data = [
      "a.b",
      "a-b",
      "a_b",
      "a.b.c",
      ]
    for value in data:
      HostInfo.NormalizeName(value)


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class TestParseAsn1Generalizedtime(unittest.TestCase):
  def test(self):
    # UTC
    self.assertEqual(utils._ParseAsn1Generalizedtime("19700101000000Z"), 0)
    self.assertEqual(utils._ParseAsn1Generalizedtime("20100222174152Z"),
                     1266860512)
    self.assertEqual(utils._ParseAsn1Generalizedtime("20380119031407Z"),
                     (2**31) - 1)

    # With offset
    self.assertEqual(utils._ParseAsn1Generalizedtime("20100222174152+0000"),
                     1266860512)
    self.assertEqual(utils._ParseAsn1Generalizedtime("20100223131652+0000"),
                     1266931012)
    self.assertEqual(utils._ParseAsn1Generalizedtime("20100223051808-0800"),
                     1266931088)
    self.assertEqual(utils._ParseAsn1Generalizedtime("20100224002135+1100"),
                     1266931295)
    self.assertEqual(utils._ParseAsn1Generalizedtime("19700101000000-0100"),
                     3600)

    # Leap seconds are not supported by datetime.datetime
    self.assertRaises(ValueError, utils._ParseAsn1Generalizedtime,
                      "19841231235960+0000")
    self.assertRaises(ValueError, utils._ParseAsn1Generalizedtime,
                      "19920630235960+0000")

    # Errors
    self.assertRaises(ValueError, utils._ParseAsn1Generalizedtime, "")
    self.assertRaises(ValueError, utils._ParseAsn1Generalizedtime, "invalid")
    self.assertRaises(ValueError, utils._ParseAsn1Generalizedtime,
                      "20100222174152")
    self.assertRaises(ValueError, utils._ParseAsn1Generalizedtime,
                      "Mon Feb 22 17:47:02 UTC 2010")
    self.assertRaises(ValueError, utils._ParseAsn1Generalizedtime,
                      "2010-02-22 17:42:02")


class TestGetX509CertValidity(testutils.GanetiTestCase):
  def setUp(self):
    testutils.GanetiTestCase.setUp(self)

    pyopenssl_version = distutils.version.LooseVersion(OpenSSL.__version__)

    # Test whether we have pyOpenSSL 0.7 or above
    self.pyopenssl0_7 = (pyopenssl_version >= "0.7")

    if not self.pyopenssl0_7:
      warnings.warn("This test requires pyOpenSSL 0.7 or above to"
                    " function correctly")

  def _LoadCert(self, name):
    return OpenSSL.crypto.load_certificate(OpenSSL.crypto.FILETYPE_PEM,
                                           self._ReadTestData(name))

  def test(self):
    validity = utils.GetX509CertValidity(self._LoadCert("cert1.pem"))
    if self.pyopenssl0_7:
      self.assertEqual(validity, (1266919967, 1267524767))
    else:
      self.assertEqual(validity, (None, None))

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class TestMakedirs(unittest.TestCase):
  def setUp(self):
    self.tmpdir = tempfile.mkdtemp()

  def tearDown(self):
    shutil.rmtree(self.tmpdir)

  def testNonExisting(self):
    path = utils.PathJoin(self.tmpdir, "foo")
    utils.Makedirs(path)
    self.assert_(os.path.isdir(path))

  def testExisting(self):
<