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#!/usr/bin/python
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#
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# Copyright (C) 2011 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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"""Script for testing ganeti.utils.text"""
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import re
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import string
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import time
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import unittest
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import os
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from cStringIO import StringIO
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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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import testutils
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class TestMatchNameComponent(unittest.TestCase):
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  """Test case for the MatchNameComponent function"""
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  def testEmptyList(self):
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    """Test that there is no match against an empty list"""
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    self.failUnlessEqual(utils.MatchNameComponent("", []), None)
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    self.failUnlessEqual(utils.MatchNameComponent("test", []), None)
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  def testSingleMatch(self):
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    """Test that a single match is performed correctly"""
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    mlist = ["test1.example.com", "test2.example.com", "test3.example.com"]
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    for key in "test2", "test2.example", "test2.example.com":
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      self.failUnlessEqual(utils.MatchNameComponent(key, mlist), mlist[1])
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  def testMultipleMatches(self):
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    """Test that a multiple match is returned as None"""
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    mlist = ["test1.example.com", "test1.example.org", "test1.example.net"]
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    for key in "test1", "test1.example":
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      self.failUnlessEqual(utils.MatchNameComponent(key, mlist), None)
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  def testFullMatch(self):
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    """Test that a full match is returned correctly"""
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    key1 = "test1"
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    key2 = "test1.example"
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    mlist = [key2, key2 + ".com"]
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    self.failUnlessEqual(utils.MatchNameComponent(key1, mlist), None)
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    self.failUnlessEqual(utils.MatchNameComponent(key2, mlist), key2)
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  def testCaseInsensitivePartialMatch(self):
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    """Test for the case_insensitive keyword"""
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    mlist = ["test1.example.com", "test2.example.net"]
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    self.assertEqual(utils.MatchNameComponent("test2", mlist,
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                                              case_sensitive=False),
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                     "test2.example.net")
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    self.assertEqual(utils.MatchNameComponent("Test2", mlist,
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                                              case_sensitive=False),
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                     "test2.example.net")
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    self.assertEqual(utils.MatchNameComponent("teSt2", mlist,
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                                              case_sensitive=False),
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                     "test2.example.net")
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    self.assertEqual(utils.MatchNameComponent("TeSt2", mlist,
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                                              case_sensitive=False),
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                     "test2.example.net")
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  def testCaseInsensitiveFullMatch(self):
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    mlist = ["ts1.ex", "ts1.ex.org", "ts2.ex", "Ts2.ex"]
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    # Between the two ts1 a full string match non-case insensitive should work
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    self.assertEqual(utils.MatchNameComponent("Ts1", mlist,
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                                              case_sensitive=False),
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                     None)
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    self.assertEqual(utils.MatchNameComponent("Ts1.ex", mlist,
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                                              case_sensitive=False),
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                     "ts1.ex")
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    self.assertEqual(utils.MatchNameComponent("ts1.ex", mlist,
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                                              case_sensitive=False),
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                     "ts1.ex")
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    # Between the two ts2 only case differs, so only case-match works
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    self.assertEqual(utils.MatchNameComponent("ts2.ex", mlist,
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                                              case_sensitive=False),
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                     "ts2.ex")
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    self.assertEqual(utils.MatchNameComponent("Ts2.ex", mlist,
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                                              case_sensitive=False),
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                     "Ts2.ex")
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    self.assertEqual(utils.MatchNameComponent("TS2.ex", mlist,
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                                              case_sensitive=False),
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                     None)
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class TestDnsNameGlobPattern(unittest.TestCase):
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  def setUp(self):
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    self.names = [
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      "node1.example.com",
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      "node2-0.example.com",
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      "node2-1.example.com",
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      "node1.example.net",
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      "web1.example.com",
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      "web2.example.com",
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      "sub.site.example.com",
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      ]
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  def _Test(self, pattern):
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    re_pat = utils.DnsNameGlobPattern(pattern)
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    return filter(re.compile(re_pat).match, self.names)
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  def test(self):
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    for pattern in ["xyz", "node", " ", "example.net", "x*.example.*",
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                    "x*.example.com"]:
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      self.assertEqual(self._Test(pattern), [])
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    for pattern in ["*", "???*"]:
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      self.assertEqual(self._Test(pattern), self.names)
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    self.assertEqual(self._Test("node1.*.net"), ["node1.example.net"])
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    self.assertEqual(self._Test("*.example.net"), ["node1.example.net"])
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    self.assertEqual(self._Test("web1.example.com"), ["web1.example.com"])
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    for pattern in ["*.*.*.*", "???", "*.site"]:
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      self.assertEqual(self._Test(pattern), ["sub.site.example.com"])
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    self.assertEqual(self._Test("node1"), [
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      "node1.example.com",
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      "node1.example.net",
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      ])
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    self.assertEqual(self._Test("node?*.example.*"), [
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      "node1.example.com",
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      "node2-0.example.com",
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      "node2-1.example.com",
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      "node1.example.net",
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      ])
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    self.assertEqual(self._Test("*-?"), [
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      "node2-0.example.com",
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      "node2-1.example.com",
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      ])
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    self.assertEqual(self._Test("node2-?.example.com"), [
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      "node2-0.example.com",
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      "node2-1.example.com",
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      ])
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class TestFormatUnit(unittest.TestCase):
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  """Test case for the FormatUnit function"""
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  def testMiB(self):
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    self.assertEqual(utils.FormatUnit(1, "h"), "1M")
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    self.assertEqual(utils.FormatUnit(100, "h"), "100M")
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    self.assertEqual(utils.FormatUnit(1023, "h"), "1023M")
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    self.assertEqual(utils.FormatUnit(1, "m"), "1")
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    self.assertEqual(utils.FormatUnit(100, "m"), "100")
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    self.assertEqual(utils.FormatUnit(1023, "m"), "1023")
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    self.assertEqual(utils.FormatUnit(1024, "m"), "1024")
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    self.assertEqual(utils.FormatUnit(1536, "m"), "1536")
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    self.assertEqual(utils.FormatUnit(17133, "m"), "17133")
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    self.assertEqual(utils.FormatUnit(1024 * 1024 - 1, "m"), "1048575")
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  def testGiB(self):
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    self.assertEqual(utils.FormatUnit(1024, "h"), "1.0G")
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    self.assertEqual(utils.FormatUnit(1536, "h"), "1.5G")
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    self.assertEqual(utils.FormatUnit(17133, "h"), "16.7G")
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    self.assertEqual(utils.FormatUnit(1024 * 1024 - 1, "h"), "1024.0G")
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    self.assertEqual(utils.FormatUnit(1024, "g"), "1.0")
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    self.assertEqual(utils.FormatUnit(1536, "g"), "1.5")
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    self.assertEqual(utils.FormatUnit(17133, "g"), "16.7")
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    self.assertEqual(utils.FormatUnit(1024 * 1024 - 1, "g"), "1024.0")
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    self.assertEqual(utils.FormatUnit(1024 * 1024, "g"), "1024.0")
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    self.assertEqual(utils.FormatUnit(5120 * 1024, "g"), "5120.0")
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    self.assertEqual(utils.FormatUnit(29829 * 1024, "g"), "29829.0")
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  def testTiB(self):
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    self.assertEqual(utils.FormatUnit(1024 * 1024, "h"), "1.0T")
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    self.assertEqual(utils.FormatUnit(5120 * 1024, "h"), "5.0T")
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    self.assertEqual(utils.FormatUnit(29829 * 1024, "h"), "29.1T")
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    self.assertEqual(utils.FormatUnit(1024 * 1024, "t"), "1.0")
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    self.assertEqual(utils.FormatUnit(5120 * 1024, "t"), "5.0")
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    self.assertEqual(utils.FormatUnit(29829 * 1024, "t"), "29.1")
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  def testErrors(self):
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    self.assertRaises(errors.ProgrammerError, utils.FormatUnit, 1, "a")
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class TestParseUnit(unittest.TestCase):
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  """Test case for the ParseUnit function"""
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  SCALES = (("", 1),
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            ("M", 1), ("G", 1024), ("T", 1024 * 1024),
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            ("MB", 1), ("GB", 1024), ("TB", 1024 * 1024),
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            ("MiB", 1), ("GiB", 1024), ("TiB", 1024 * 1024))
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  def testRounding(self):
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    self.assertEqual(utils.ParseUnit("0"), 0)
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    self.assertEqual(utils.ParseUnit("1"), 4)
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    self.assertEqual(utils.ParseUnit("2"), 4)
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    self.assertEqual(utils.ParseUnit("3"), 4)
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    self.assertEqual(utils.ParseUnit("124"), 124)
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    self.assertEqual(utils.ParseUnit("125"), 128)
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    self.assertEqual(utils.ParseUnit("126"), 128)
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    self.assertEqual(utils.ParseUnit("127"), 128)
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    self.assertEqual(utils.ParseUnit("128"), 128)
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    self.assertEqual(utils.ParseUnit("129"), 132)
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    self.assertEqual(utils.ParseUnit("130"), 132)
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  def testFloating(self):
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    self.assertEqual(utils.ParseUnit("0"), 0)
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    self.assertEqual(utils.ParseUnit("0.5"), 4)
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    self.assertEqual(utils.ParseUnit("1.75"), 4)
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    self.assertEqual(utils.ParseUnit("1.99"), 4)
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    self.assertEqual(utils.ParseUnit("2.00"), 4)
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    self.assertEqual(utils.ParseUnit("2.01"), 4)
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    self.assertEqual(utils.ParseUnit("3.99"), 4)
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    self.assertEqual(utils.ParseUnit("4.00"), 4)
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    self.assertEqual(utils.ParseUnit("4.01"), 8)
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    self.assertEqual(utils.ParseUnit("1.5G"), 1536)
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    self.assertEqual(utils.ParseUnit("1.8G"), 1844)
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    self.assertEqual(utils.ParseUnit("8.28T"), 8682212)
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  def testSuffixes(self):
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    for sep in ("", " ", "   ", "\t", "\t "):
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      for suffix, scale in self.SCALES:
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        for func in (lambda x: x, str.lower, str.upper):
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          self.assertEqual(utils.ParseUnit("1024" + sep + func(suffix)),
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                           1024 * scale)
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  def testInvalidInput(self):
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    for sep in ("-", "_", ",", "a"):
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      for suffix, _ in self.SCALES:
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        self.assertRaises(errors.UnitParseError, utils.ParseUnit,
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                          "1" + sep + suffix)
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    for suffix, _ in self.SCALES:
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      self.assertRaises(errors.UnitParseError, utils.ParseUnit,
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                        "1,3" + suffix)
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class TestShellQuoting(unittest.TestCase):
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  """Test case for shell quoting functions"""
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  def testShellQuote(self):
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    self.assertEqual(utils.ShellQuote('abc'), "abc")
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    self.assertEqual(utils.ShellQuote('ab"c'), "'ab\"c'")
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    self.assertEqual(utils.ShellQuote("a'bc"), "'a'\\''bc'")
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    self.assertEqual(utils.ShellQuote("a b c"), "'a b c'")
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    self.assertEqual(utils.ShellQuote("a b\\ c"), "'a b\\ c'")
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  def testShellQuoteArgs(self):
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    self.assertEqual(utils.ShellQuoteArgs(['a', 'b', 'c']), "a b c")
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    self.assertEqual(utils.ShellQuoteArgs(['a', 'b"', 'c']), "a 'b\"' c")
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    self.assertEqual(utils.ShellQuoteArgs(['a', 'b\'', 'c']), "a 'b'\\\''' c")
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class TestShellWriter(unittest.TestCase):
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  def test(self):
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    buf = StringIO()
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    sw = utils.ShellWriter(buf)
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    sw.Write("#!/bin/bash")
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    sw.Write("if true; then")
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    sw.IncIndent()
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    try:
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      sw.Write("echo true")
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      sw.Write("for i in 1 2 3")
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      sw.Write("do")
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      sw.IncIndent()
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      try:
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        self.assertEqual(sw._indent, 2)
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        sw.Write("date")
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      finally:
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        sw.DecIndent()
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      sw.Write("done")
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    finally:
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      sw.DecIndent()
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    sw.Write("echo %s", utils.ShellQuote("Hello World"))
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    sw.Write("exit 0")
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    self.assertEqual(sw._indent, 0)
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    output = buf.getvalue()
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    self.assert_(output.endswith("\n"))
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    lines = output.splitlines()
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    self.assertEqual(len(lines), 9)
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    self.assertEqual(lines[0], "#!/bin/bash")
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    self.assert_(re.match(r"^\s+date$", lines[5]))
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    self.assertEqual(lines[7], "echo 'Hello World'")
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  def testEmpty(self):
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    buf = StringIO()
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    sw = utils.ShellWriter(buf)
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    sw = None
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    self.assertEqual(buf.getvalue(), "")
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  def testEmptyNoIndent(self):
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    buf = StringIO()
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    sw = utils.ShellWriter(buf, indent=False)
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    sw = None
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    self.assertEqual(buf.getvalue(), "")
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  @classmethod
325
  def _AddLevel(cls, sw, level):
326
    if level == 6:
327
      return
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329
    sw.IncIndent()
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    try:
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      # Add empty line, it should not be indented
332
      sw.Write("")
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      sw.Write(str(level))
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      cls._AddLevel(sw, level + 1)
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    finally:
336
      sw.DecIndent()
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  def testEmptyLines(self):
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    buf = StringIO()
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    sw = utils.ShellWriter(buf)
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    self._AddLevel(sw, 1)
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    self.assertEqual(buf.getvalue(),
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                     "".join("\n%s%s\n" % (i * "  ", i) for i in range(1, 6)))
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  def testEmptyLinesNoIndent(self):
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    buf = StringIO()
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    sw = utils.ShellWriter(buf, indent=False)
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    self._AddLevel(sw, 1)
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    self.assertEqual(buf.getvalue(),
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                     "".join("\n%s\n" % i for i in range(1, 6)))
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class TestNormalizeAndValidateMac(unittest.TestCase):
358
  def testInvalid(self):
359
    self.assertRaises(errors.OpPrereqError,
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                      utils.NormalizeAndValidateMac, "xxx")
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  def testNormalization(self):
363
    for mac in ["aa:bb:cc:dd:ee:ff", "00:AA:11:bB:22:cc"]:
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      self.assertEqual(utils.NormalizeAndValidateMac(mac), mac.lower())
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class TestSafeEncode(unittest.TestCase):
368
  """Test case for SafeEncode"""
369

    
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  def testAscii(self):
371
    for txt in [string.digits, string.letters, string.punctuation]:
372
      self.failUnlessEqual(txt, utils.SafeEncode(txt))
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  def testDoubleEncode(self):
375
    for i in range(255):
376
      txt = utils.SafeEncode(chr(i))
377
      self.failUnlessEqual(txt, utils.SafeEncode(txt))
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  def testUnicode(self):
380
    # 1024 is high enough to catch non-direct ASCII mappings
381
    for i in range(1024):
382
      txt = utils.SafeEncode(unichr(i))
383
      self.failUnlessEqual(txt, utils.SafeEncode(txt))
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class TestUnescapeAndSplit(unittest.TestCase):
387
  """Testing case for UnescapeAndSplit"""
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  def setUp(self):
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    # testing more that one separator for regexp safety
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    self._seps = [",", "+", ".", ":"]
392

    
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  def testSimple(self):
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    a = ["a", "b", "c", "d"]
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    for sep in self._seps:
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      self.failUnlessEqual(utils.UnescapeAndSplit(sep.join(a), sep=sep), a)
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  def testEscape(self):
399
    for sep in self._seps:
400
      a = ["a", "b\\" + sep + "c", "d"]
401
      b = ["a", "b" + sep + "c", "d"]
402
      self.failUnlessEqual(utils.UnescapeAndSplit(sep.join(a), sep=sep), b)
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404
  def testDoubleEscape(self):
405
    for sep in self._seps:
406
      a = ["a", "b\\\\", "c", "d"]
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      b = ["a", "b\\", "c", "d"]
408
      self.failUnlessEqual(utils.UnescapeAndSplit(sep.join(a), sep=sep), b)
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410
  def testThreeEscape(self):
411
    for sep in self._seps:
412
      a = ["a", "b\\\\\\" + sep + "c", "d"]
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      b = ["a", "b\\" + sep + "c", "d"]
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      self.failUnlessEqual(utils.UnescapeAndSplit(sep.join(a), sep=sep), b)
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  def testEscapeAtEnd(self):
417
    for sep in self._seps:
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      self.assertEqual(utils.UnescapeAndSplit("\\", sep=sep), ["\\"])
419

    
420
      a = ["a", "b\\", "c"]
421
      b = ["a", "b" + sep + "c\\"]
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      self.assertEqual(utils.UnescapeAndSplit("%s\\" % sep.join(a), sep=sep), b)
423

    
424
      a = ["\\" + sep, "\\" + sep, "c", "d\\.moo"]
425
      b = [sep, sep, "c", "d.moo\\"]
426
      self.assertEqual(utils.UnescapeAndSplit("%s\\" % sep.join(a), sep=sep), b)
427

    
428
  def testMultipleEscapes(self):
429
    for sep in self._seps:
430
      a = ["a", "b\\" + sep + "c", "d\\" + sep + "e\\" + sep + "f", "g"]
431
      b = ["a", "b" + sep + "c", "d" + sep + "e" + sep + "f", "g"]
432
      self.failUnlessEqual(utils.UnescapeAndSplit(sep.join(a), sep=sep), b)
433

    
434

    
435
class TestCommaJoin(unittest.TestCase):
436
  def test(self):
437
    self.assertEqual(utils.CommaJoin([]), "")
438
    self.assertEqual(utils.CommaJoin([1, 2, 3]), "1, 2, 3")
439
    self.assertEqual(utils.CommaJoin(["Hello"]), "Hello")
440
    self.assertEqual(utils.CommaJoin(["Hello", "World"]), "Hello, World")
441
    self.assertEqual(utils.CommaJoin(["Hello", "World", 99]),
442
                     "Hello, World, 99")
443

    
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445
class TestFormatTime(unittest.TestCase):
446
  """Testing case for FormatTime"""
447

    
448
  @staticmethod
449
  def _TestInProcess(tz, timestamp, usecs, expected):
450
    os.environ["TZ"] = tz
451
    time.tzset()
452
    return utils.FormatTime(timestamp, usecs=usecs) == expected
453

    
454
  def _Test(self, *args):
455
    # Need to use separate process as we want to change TZ
456
    self.assert_(utils.RunInSeparateProcess(self._TestInProcess, *args))
457

    
458
  def test(self):
459
    self._Test("UTC", 0, None, "1970-01-01 00:00:00")
460
    self._Test("America/Sao_Paulo", 1292606926, None, "2010-12-17 15:28:46")
461
    self._Test("Europe/London", 1292606926, None, "2010-12-17 17:28:46")
462
    self._Test("Europe/Zurich", 1292606926, None, "2010-12-17 18:28:46")
463
    self._Test("Europe/Zurich", 1332944288, 8787, "2012-03-28 16:18:08.008787")
464
    self._Test("Australia/Sydney", 1292606926, None, "2010-12-18 04:28:46")
465
    self._Test("Australia/Sydney", 1292606926, None, "2010-12-18 04:28:46")
466
    self._Test("Australia/Sydney", 1292606926, 999999,
467
               "2010-12-18 04:28:46.999999")
468

    
469
  def testNone(self):
470
    self.failUnlessEqual(utils.FormatTime(None), "N/A")
471

    
472
  def testInvalid(self):
473
    self.failUnlessEqual(utils.FormatTime(()), "N/A")
474

    
475
  def testNow(self):
476
    # tests that we accept time.time input
477
    utils.FormatTime(time.time())
478
    # tests that we accept int input
479
    utils.FormatTime(int(time.time()))
480

    
481

    
482
class TestFormatSeconds(unittest.TestCase):
483
  def test(self):
484
    self.assertEqual(utils.FormatSeconds(1), "1s")
485
    self.assertEqual(utils.FormatSeconds(3600), "1h 0m 0s")
486
    self.assertEqual(utils.FormatSeconds(3599), "59m 59s")
487
    self.assertEqual(utils.FormatSeconds(7200), "2h 0m 0s")
488
    self.assertEqual(utils.FormatSeconds(7201), "2h 0m 1s")
489
    self.assertEqual(utils.FormatSeconds(7281), "2h 1m 21s")
490
    self.assertEqual(utils.FormatSeconds(29119), "8h 5m 19s")
491
    self.assertEqual(utils.FormatSeconds(19431228), "224d 21h 33m 48s")
492
    self.assertEqual(utils.FormatSeconds(-1), "-1s")
493
    self.assertEqual(utils.FormatSeconds(-282), "-282s")
494
    self.assertEqual(utils.FormatSeconds(-29119), "-29119s")
495

    
496
  def testFloat(self):
497
    self.assertEqual(utils.FormatSeconds(1.3), "1s")
498
    self.assertEqual(utils.FormatSeconds(1.9), "2s")
499
    self.assertEqual(utils.FormatSeconds(3912.12311), "1h 5m 12s")
500
    self.assertEqual(utils.FormatSeconds(3912.8), "1h 5m 13s")
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502

    
503
class TestLineSplitter(unittest.TestCase):
504
  def test(self):
505
    lines = []
506
    ls = utils.LineSplitter(lines.append)
507
    ls.write("Hello World\n")
508
    self.assertEqual(lines, [])
509
    ls.write("Foo\n Bar\r\n ")
510
    ls.write("Baz")
511
    ls.write("Moo")
512
    self.assertEqual(lines, [])
513
    ls.flush()
514
    self.assertEqual(lines, ["Hello World", "Foo", " Bar"])
515
    ls.close()
516
    self.assertEqual(lines, ["Hello World", "Foo", " Bar", " BazMoo"])
517

    
518
  def _testExtra(self, line, all_lines, p1, p2):
519
    self.assertEqual(p1, 999)
520
    self.assertEqual(p2, "extra")
521
    all_lines.append(line)
522

    
523
  def testExtraArgsNoFlush(self):
524
    lines = []
525
    ls = utils.LineSplitter(self._testExtra, lines, 999, "extra")
526
    ls.write("\n\nHello World\n")
527
    ls.write("Foo\n Bar\r\n ")
528
    ls.write("")
529
    ls.write("Baz")
530
    ls.write("Moo\n\nx\n")
531
    self.assertEqual(lines, [])
532
    ls.close()
533
    self.assertEqual(lines, ["", "", "Hello World", "Foo", " Bar", " BazMoo",
534
                             "", "x"])
535

    
536

    
537
class TestIsValidShellParam(unittest.TestCase):
538
  def test(self):
539
    for val, result in [
540
      ("abc", True),
541
      ("ab;cd", False),
542
      ]:
543
      self.assertEqual(utils.IsValidShellParam(val), result)
544

    
545

    
546
class TestBuildShellCmd(unittest.TestCase):
547
  def test(self):
548
    self.assertRaises(errors.ProgrammerError, utils.BuildShellCmd,
549
                      "ls %s", "ab;cd")
550
    self.assertEqual(utils.BuildShellCmd("ls %s", "ab"), "ls ab")
551

    
552

    
553
class TestOrdinal(unittest.TestCase):
554
  def test(self):
555
    checks = {
556
      0: "0th", 1: "1st", 2: "2nd", 3: "3rd", 4: "4th", 5: "5th", 6: "6th",
557
      7: "7th", 8: "8th", 9: "9th", 10: "10th", 11: "11th", 12: "12th",
558
      13: "13th", 14: "14th", 15: "15th", 16: "16th", 17: "17th",
559
      18: "18th", 19: "19th", 20: "20th", 21: "21st", 25: "25th", 30: "30th",
560
      32: "32nd", 40: "40th", 50: "50th", 55: "55th", 60: "60th", 62: "62nd",
561
      70: "70th", 80: "80th", 83: "83rd", 90: "90th", 91: "91st",
562
      582: "582nd", 999: "999th",
563
      }
564

    
565
    for value, ordinal in checks.items():
566
      self.assertEqual(utils.FormatOrdinal(value), ordinal)
567

    
568

    
569
class TestTruncate(unittest.TestCase):
570
  def _Test(self, text, length):
571
    result = utils.Truncate(text, length)
572
    self.assertTrue(len(result) <= length)
573
    return result
574

    
575
  def test(self):
576
    self.assertEqual(self._Test("", 80), "")
577
    self.assertEqual(self._Test("abc", 4), "abc")
578
    self.assertEqual(self._Test("Hello World", 80), "Hello World")
579
    self.assertEqual(self._Test("Hello World", 4), "H...")
580
    self.assertEqual(self._Test("Hello World", 5), "He...")
581

    
582
    for i in [4, 10, 100]:
583
      data = i * "FooBarBaz"
584
      self.assertEqual(self._Test(data, len(data)), data)
585

    
586
    for (length, exp) in [(8, u"T\u00e4st\u2026xyz"), (7, u"T\u00e4st...")]:
587
      self.assertEqual(self._Test(u"T\u00e4st\u2026xyz", length), exp)
588

    
589
    self.assertEqual(self._Test(range(100), 20), "[0, 1, 2, 3, 4, 5...")
590

    
591
  def testError(self):
592
    for i in range(4):
593
      self.assertRaises(AssertionError, utils.Truncate, "", i)
594

    
595

    
596
class TestFilterEmptyLinesAndComments(unittest.TestCase):
597
  def testEmpty(self):
598
    self.assertEqual(utils.FilterEmptyLinesAndComments(""), [])
599
    self.assertEqual(utils.FilterEmptyLinesAndComments("\n"), [])
600
    self.assertEqual(utils.FilterEmptyLinesAndComments("\n" * 100), [])
601
    self.assertEqual(utils.FilterEmptyLinesAndComments("\n  \n\t \n"), [])
602

    
603
  def test(self):
604
    text = """
605
      This
606
        is
607
      # with comments
608
          a
609
            test
610
            # in
611
            #
612
            saying
613
      ...#...
614
        # multiple places
615
        Hello World!
616
      """
617
    self.assertEqual(utils.FilterEmptyLinesAndComments(text), [
618
      "This",
619
      "is",
620
      "a",
621
      "test",
622
      "saying",
623
      "...#...",
624
      "Hello World!",
625
      ])
626

    
627

    
628
if __name__ == "__main__":
629
  testutils.GanetiTestProgram()