Lib/test/test_calendar.py

   1 import calendar
   2 import unittest
   3
   4 from test import test_support
   5
   6
   7 result_2004_text = """
   8                                   2004
   9
  10       January                   February                   March
  11 Mo Tu We Th Fr Sa Su      Mo Tu We Th Fr Sa Su      Mo Tu We Th Fr Sa Su
  12           1  2  3  4                         1       1  2  3  4  5  6  7
  13  5  6  7  8  9 10 11       2  3  4  5  6  7  8       8  9 10 11 12 13 14
  14 12 13 14 15 16 17 18       9 10 11 12 13 14 15      15 16 17 18 19 20 21
  15 19 20 21 22 23 24 25      16 17 18 19 20 21 22      22 23 24 25 26 27 28
  16 26 27 28 29 30 31         23 24 25 26 27 28 29      29 30 31
  17
  18        April                      May                       June
  19 Mo Tu We Th Fr Sa Su      Mo Tu We Th Fr Sa Su      Mo Tu We Th Fr Sa Su
  20           1  2  3  4                      1  2          1  2  3  4  5  6
  21  5  6  7  8  9 10 11       3  4  5  6  7  8  9       7  8  9 10 11 12 13
  22 12 13 14 15 16 17 18      10 11 12 13 14 15 16      14 15 16 17 18 19 20
  23 19 20 21 22 23 24 25      17 18 19 20 21 22 23      21 22 23 24 25 26 27
  24 26 27 28 29 30            24 25 26 27 28 29 30      28 29 30
  25                           31
  26
  27         July                     August                  September
  28 Mo Tu We Th Fr Sa Su      Mo Tu We Th Fr Sa Su      Mo Tu We Th Fr Sa Su
  29           1  2  3  4                         1             1  2  3  4  5
  30  5  6  7  8  9 10 11       2  3  4  5  6  7  8       6  7  8  9 10 11 12
  31 12 13 14 15 16 17 18       9 10 11 12 13 14 15      13 14 15 16 17 18 19
  32 19 20 21 22 23 24 25      16 17 18 19 20 21 22      20 21 22 23 24 25 26
  33 26 27 28 29 30 31         23 24 25 26 27 28 29      27 28 29 30
  34                           30 31
  35
  36       October                   November                  December
  37 Mo Tu We Th Fr Sa Su      Mo Tu We Th Fr Sa Su      Mo Tu We Th Fr Sa Su
  38              1  2  3       1  2  3  4  5  6  7             1  2  3  4  5
  39  4  5  6  7  8  9 10       8  9 10 11 12 13 14       6  7  8  9 10 11 12
  40 11 12 13 14 15 16 17      15 16 17 18 19 20 21      13 14 15 16 17 18 19
  41 18 19 20 21 22 23 24      22 23 24 25 26 27 28      20 21 22 23 24 25 26
  42 25 26 27 28 29 30 31      29 30                     27 28 29 30 31
  43 """
  44
  45 result_2004_html = """
  46 <?xml version="1.0" encoding="ascii"?>
  47 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
  48 <html>
  49 <head>
  50 <meta http-equiv="Content-Type" content="text/html; charset=ascii" />
  51 <link rel="stylesheet" type="text/css" href="calendar.css" />
  52 <title>Calendar for 2004</title>
  53 </head>
  54 <body>
  55 <table border="0" cellpadding="0" cellspacing="0" class="year">
  56 <tr><th colspan="3" class="year">2004</th></tr><tr><td><table border="0" cellpadding="0" cellspacing="0" class="month">
  57 <tr><th colspan="7" class="month">January</th></tr>
  58 <tr><th class="mon">Mon</th><th class="tue">Tue</th><th class="wed">Wed</th><th class="thu">Thu</th><th class="fri">Fri</th><th class="sat">Sat</th><th class="sun">Sun</th></tr>
  59 <tr><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="thu">1</td><td class="fri">2</td><td class="sat">3</td><td class="sun">4</td></tr>
  60 <tr><td class="mon">5</td><td class="tue">6</td><td class="wed">7</td><td class="thu">8</td><td class="fri">9</td><td class="sat">10</td><td class="sun">11</td></tr>
  61 <tr><td class="mon">12</td><td class="tue">13</td><td class="wed">14</td><td class="thu">15</td><td class="fri">16</td><td class="sat">17</td><td class="sun">18</td></tr>
  62 <tr><td class="mon">19</td><td class="tue">20</td><td class="wed">21</td><td class="thu">22</td><td class="fri">23</td><td class="sat">24</td><td class="sun">25</td></tr>
  63 <tr><td class="mon">26</td><td class="tue">27</td><td class="wed">28</td><td class="thu">29</td><td class="fri">30</td><td class="sat">31</td><td class="noday">&nbsp;</td></tr>
  64 </table>
  65 </td><td><table border="0" cellpadding="0" cellspacing="0" class="month">
  66 <tr><th colspan="7" class="month">February</th></tr>
  67 <tr><th class="mon">Mon</th><th class="tue">Tue</th><th class="wed">Wed</th><th class="thu">Thu</th><th class="fri">Fri</th><th class="sat">Sat</th><th class="sun">Sun</th></tr>
  68 <tr><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="sun">1</td></tr>
  69 <tr><td class="mon">2</td><td class="tue">3</td><td class="wed">4</td><td class="thu">5</td><td class="fri">6</td><td class="sat">7</td><td class="sun">8</td></tr>
  70 <tr><td class="mon">9</td><td class="tue">10</td><td class="wed">11</td><td class="thu">12</td><td class="fri">13</td><td class="sat">14</td><td class="sun">15</td></tr>
  71 <tr><td class="mon">16</td><td class="tue">17</td><td class="wed">18</td><td class="thu">19</td><td class="fri">20</td><td class="sat">21</td><td class="sun">22</td></tr>
  72 <tr><td class="mon">23</td><td class="tue">24</td><td class="wed">25</td><td class="thu">26</td><td class="fri">27</td><td class="sat">28</td><td class="sun">29</td></tr>
  73 </table>
  74 </td><td><table border="0" cellpadding="0" cellspacing="0" class="month">
  75 <tr><th colspan="7" class="month">March</th></tr>
  76 <tr><th class="mon">Mon</th><th class="tue">Tue</th><th class="wed">Wed</th><th class="thu">Thu</th><th class="fri">Fri</th><th class="sat">Sat</th><th class="sun">Sun</th></tr>
  77 <tr><td class="mon">1</td><td class="tue">2</td><td class="wed">3</td><td class="thu">4</td><td class="fri">5</td><td class="sat">6</td><td class="sun">7</td></tr>
  78 <tr><td class="mon">8</td><td class="tue">9</td><td class="wed">10</td><td class="thu">11</td><td class="fri">12</td><td class="sat">13</td><td class="sun">14</td></tr>
  79 <tr><td class="mon">15</td><td class="tue">16</td><td class="wed">17</td><td class="thu">18</td><td class="fri">19</td><td class="sat">20</td><td class="sun">21</td></tr>
  80 <tr><td class="mon">22</td><td class="tue">23</td><td class="wed">24</td><td class="thu">25</td><td class="fri">26</td><td class="sat">27</td><td class="sun">28</td></tr>
  81 <tr><td class="mon">29</td><td class="tue">30</td><td class="wed">31</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td></tr>
  82 </table>
  83 </td></tr><tr><td><table border="0" cellpadding="0" cellspacing="0" class="month">
  84 <tr><th colspan="7" class="month">April</th></tr>
  85 <tr><th class="mon">Mon</th><th class="tue">Tue</th><th class="wed">Wed</th><th class="thu">Thu</th><th class="fri">Fri</th><th class="sat">Sat</th><th class="sun">Sun</th></tr>
  86 <tr><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="thu">1</td><td class="fri">2</td><td class="sat">3</td><td class="sun">4</td></tr>
  87 <tr><td class="mon">5</td><td class="tue">6</td><td class="wed">7</td><td class="thu">8</td><td class="fri">9</td><td class="sat">10</td><td class="sun">11</td></tr>
  88 <tr><td class="mon">12</td><td class="tue">13</td><td class="wed">14</td><td class="thu">15</td><td class="fri">16</td><td class="sat">17</td><td class="sun">18</td></tr>
  89 <tr><td class="mon">19</td><td class="tue">20</td><td class="wed">21</td><td class="thu">22</td><td class="fri">23</td><td class="sat">24</td><td class="sun">25</td></tr>
  90 <tr><td class="mon">26</td><td class="tue">27</td><td class="wed">28</td><td class="thu">29</td><td class="fri">30</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td></tr>
  91 </table>
  92 </td><td><table border="0" cellpadding="0" cellspacing="0" class="month">
  93 <tr><th colspan="7" class="month">May</th></tr>
  94 <tr><th class="mon">Mon</th><th class="tue">Tue</th><th class="wed">Wed</th><th class="thu">Thu</th><th class="fri">Fri</th><th class="sat">Sat</th><th class="sun">Sun</th></tr>
  95 <tr><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="sat">1</td><td class="sun">2</td></tr>
  96 <tr><td class="mon">3</td><td class="tue">4</td><td class="wed">5</td><td class="thu">6</td><td class="fri">7</td><td class="sat">8</td><td class="sun">9</td></tr>
  97 <tr><td class="mon">10</td><td class="tue">11</td><td class="wed">12</td><td class="thu">13</td><td class="fri">14</td><td class="sat">15</td><td class="sun">16</td></tr>
  98 <tr><td class="mon">17</td><td class="tue">18</td><td class="wed">19</td><td class="thu">20</td><td class="fri">21</td><td class="sat">22</td><td class="sun">23</td></tr>
  99 <tr><td class="mon">24</td><td class="tue">25</td><td class="wed">26</td><td class="thu">27</td><td class="fri">28</td><td class="sat">29</td><td class="sun">30</td></tr>
 100 <tr><td class="mon">31</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td></tr>
 101 </table>
 102 </td><td><table border="0" cellpadding="0" cellspacing="0" class="month">
 103 <tr><th colspan="7" class="month">June</th></tr>
 104 <tr><th class="mon">Mon</th><th class="tue">Tue</th><th class="wed">Wed</th><th class="thu">Thu</th><th class="fri">Fri</th><th class="sat">Sat</th><th class="sun">Sun</th></tr>
 105 <tr><td class="noday">&nbsp;</td><td class="tue">1</td><td class="wed">2</td><td class="thu">3</td><td class="fri">4</td><td class="sat">5</td><td class="sun">6</td></tr>
 106 <tr><td class="mon">7</td><td class="tue">8</td><td class="wed">9</td><td class="thu">10</td><td class="fri">11</td><td class="sat">12</td><td class="sun">13</td></tr>
 107 <tr><td class="mon">14</td><td class="tue">15</td><td class="wed">16</td><td class="thu">17</td><td class="fri">18</td><td class="sat">19</td><td class="sun">20</td></tr>
 108 <tr><td class="mon">21</td><td class="tue">22</td><td class="wed">23</td><td class="thu">24</td><td class="fri">25</td><td class="sat">26</td><td class="sun">27</td></tr>
 109 <tr><td class="mon">28</td><td class="tue">29</td><td class="wed">30</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td></tr>
 110 </table>
 111 </td></tr><tr><td><table border="0" cellpadding="0" cellspacing="0" class="month">
 112 <tr><th colspan="7" class="month">July</th></tr>
 113 <tr><th class="mon">Mon</th><th class="tue">Tue</th><th class="wed">Wed</th><th class="thu">Thu</th><th class="fri">Fri</th><th class="sat">Sat</th><th class="sun">Sun</th></tr>
 114 <tr><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="thu">1</td><td class="fri">2</td><td class="sat">3</td><td class="sun">4</td></tr>
 115 <tr><td class="mon">5</td><td class="tue">6</td><td class="wed">7</td><td class="thu">8</td><td class="fri">9</td><td class="sat">10</td><td class="sun">11</td></tr>
 116 <tr><td class="mon">12</td><td class="tue">13</td><td class="wed">14</td><td class="thu">15</td><td class="fri">16</td><td class="sat">17</td><td class="sun">18</td></tr>
 117 <tr><td class="mon">19</td><td class="tue">20</td><td class="wed">21</td><td class="thu">22</td><td class="fri">23</td><td class="sat">24</td><td class="sun">25</td></tr>
 118 <tr><td class="mon">26</td><td class="tue">27</td><td class="wed">28</td><td class="thu">29</td><td class="fri">30</td><td class="sat">31</td><td class="noday">&nbsp;</td></tr>
 119 </table>
 120 </td><td><table border="0" cellpadding="0" cellspacing="0" class="month">
 121 <tr><th colspan="7" class="month">August</th></tr>
 122 <tr><th class="mon">Mon</th><th class="tue">Tue</th><th class="wed">Wed</th><th class="thu">Thu</th><th class="fri">Fri</th><th class="sat">Sat</th><th class="sun">Sun</th></tr>
 123 <tr><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="sun">1</td></tr>
 124 <tr><td class="mon">2</td><td class="tue">3</td><td class="wed">4</td><td class="thu">5</td><td class="fri">6</td><td class="sat">7</td><td class="sun">8</td></tr>
 125 <tr><td class="mon">9</td><td class="tue">10</td><td class="wed">11</td><td class="thu">12</td><td class="fri">13</td><td class="sat">14</td><td class="sun">15</td></tr>
 126 <tr><td class="mon">16</td><td class="tue">17</td><td class="wed">18</td><td class="thu">19</td><td class="fri">20</td><td class="sat">21</td><td class="sun">22</td></tr>
 127 <tr><td class="mon">23</td><td class="tue">24</td><td class="wed">25</td><td class="thu">26</td><td class="fri">27</td><td class="sat">28</td><td class="sun">29</td></tr>
 128 <tr><td class="mon">30</td><td class="tue">31</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td></tr>
 129 </table>
 130 </td><td><table border="0" cellpadding="0" cellspacing="0" class="month">
 131 <tr><th colspan="7" class="month">September</th></tr>
 132 <tr><th class="mon">Mon</th><th class="tue">Tue</th><th class="wed">Wed</th><th class="thu">Thu</th><th class="fri">Fri</th><th class="sat">Sat</th><th class="sun">Sun</th></tr>
 133 <tr><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="wed">1</td><td class="thu">2</td><td class="fri">3</td><td class="sat">4</td><td class="sun">5</td></tr>
 134 <tr><td class="mon">6</td><td class="tue">7</td><td class="wed">8</td><td class="thu">9</td><td class="fri">10</td><td class="sat">11</td><td class="sun">12</td></tr>
 135 <tr><td class="mon">13</td><td class="tue">14</td><td class="wed">15</td><td class="thu">16</td><td class="fri">17</td><td class="sat">18</td><td class="sun">19</td></tr>
 136 <tr><td class="mon">20</td><td class="tue">21</td><td class="wed">22</td><td class="thu">23</td><td class="fri">24</td><td class="sat">25</td><td class="sun">26</td></tr>
 137 <tr><td class="mon">27</td><td class="tue">28</td><td class="wed">29</td><td class="thu">30</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td></tr>
 138 </table>
 139 </td></tr><tr><td><table border="0" cellpadding="0" cellspacing="0" class="month">
 140 <tr><th colspan="7" class="month">October</th></tr>
 141 <tr><th class="mon">Mon</th><th class="tue">Tue</th><th class="wed">Wed</th><th class="thu">Thu</th><th class="fri">Fri</th><th class="sat">Sat</th><th class="sun">Sun</th></tr>
 142 <tr><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="fri">1</td><td class="sat">2</td><td class="sun">3</td></tr>
 143 <tr><td class="mon">4</td><td class="tue">5</td><td class="wed">6</td><td class="thu">7</td><td class="fri">8</td><td class="sat">9</td><td class="sun">10</td></tr>
 144 <tr><td class="mon">11</td><td class="tue">12</td><td class="wed">13</td><td class="thu">14</td><td class="fri">15</td><td class="sat">16</td><td class="sun">17</td></tr>
 145 <tr><td class="mon">18</td><td class="tue">19</td><td class="wed">20</td><td class="thu">21</td><td class="fri">22</td><td class="sat">23</td><td class="sun">24</td></tr>
 146 <tr><td class="mon">25</td><td class="tue">26</td><td class="wed">27</td><td class="thu">28</td><td class="fri">29</td><td class="sat">30</td><td class="sun">31</td></tr>
 147 </table>
 148 </td><td><table border="0" cellpadding="0" cellspacing="0" class="month">
 149 <tr><th colspan="7" class="month">November</th></tr>
 150 <tr><th class="mon">Mon</th><th class="tue">Tue</th><th class="wed">Wed</th><th class="thu">Thu</th><th class="fri">Fri</th><th class="sat">Sat</th><th class="sun">Sun</th></tr>
 151 <tr><td class="mon">1</td><td class="tue">2</td><td class="wed">3</td><td class="thu">4</td><td class="fri">5</td><td class="sat">6</td><td class="sun">7</td></tr>
 152 <tr><td class="mon">8</td><td class="tue">9</td><td class="wed">10</td><td class="thu">11</td><td class="fri">12</td><td class="sat">13</td><td class="sun">14</td></tr>
 153 <tr><td class="mon">15</td><td class="tue">16</td><td class="wed">17</td><td class="thu">18</td><td class="fri">19</td><td class="sat">20</td><td class="sun">21</td></tr>
 154 <tr><td class="mon">22</td><td class="tue">23</td><td class="wed">24</td><td class="thu">25</td><td class="fri">26</td><td class="sat">27</td><td class="sun">28</td></tr>
 155 <tr><td class="mon">29</td><td class="tue">30</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td></tr>
 156 </table>
 157 </td><td><table border="0" cellpadding="0" cellspacing="0" class="month">
 158 <tr><th colspan="7" class="month">December</th></tr>
 159 <tr><th class="mon">Mon</th><th class="tue">Tue</th><th class="wed">Wed</th><th class="thu">Thu</th><th class="fri">Fri</th><th class="sat">Sat</th><th class="sun">Sun</th></tr>
 160 <tr><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td><td class="wed">1</td><td class="thu">2</td><td class="fri">3</td><td class="sat">4</td><td class="sun">5</td></tr>
 161 <tr><td class="mon">6</td><td class="tue">7</td><td class="wed">8</td><td class="thu">9</td><td class="fri">10</td><td class="sat">11</td><td class="sun">12</td></tr>
 162 <tr><td class="mon">13</td><td class="tue">14</td><td class="wed">15</td><td class="thu">16</td><td class="fri">17</td><td class="sat">18</td><td class="sun">19</td></tr>
 163 <tr><td class="mon">20</td><td class="tue">21</td><td class="wed">22</td><td class="thu">23</td><td class="fri">24</td><td class="sat">25</td><td class="sun">26</td></tr>
 164 <tr><td class="mon">27</td><td class="tue">28</td><td class="wed">29</td><td class="thu">30</td><td class="fri">31</td><td class="noday">&nbsp;</td><td class="noday">&nbsp;</td></tr>
 165 </table>
 166 </td></tr></table></body>
 167 </html>
 168 """
 169
 170
 171 class OutputTestCase(unittest.TestCase):
 172     def normalize_calendar(self, s):
 173         # Filters out locale dependent strings
 174         def neitherspacenordigit(c):
 175             return not c.isspace() and not c.isdigit()
 176
 177         lines = []
 178         for line in s.splitlines(False):
 179             # Drop texts, as they are locale dependent
 180             if line and not filter(neitherspacenordigit, line):
 181                 lines.append(line)
 182         return lines
 183
 184     def test_output(self):
 185         self.assertEqual(
 186             self.normalize_calendar(calendar.calendar(2004)),
 187             self.normalize_calendar(result_2004_text)
 188         )
 189
 190     def test_output_textcalendar(self):
 191         self.assertEqual(
 192             calendar.TextCalendar().formatyear(2004).strip(),
 193             result_2004_text.strip()
 194         )
 195
 196     def test_output_htmlcalendar(self):
 197         self.assertEqual(
 198             calendar.HTMLCalendar().formatyearpage(2004).strip(),
 199             result_2004_html.strip()
 200         )
 201
 202
 203 class CalendarTestCase(unittest.TestCase):
 204     def test_isleap(self):
 205         # Make sure that the return is right for a few years, and
 206         # ensure that the return values are 1 or 0, not just true or
 207         # false (see SF bug #485794).  Specific additional tests may
 208         # be appropriate; this tests a single "cycle".
 209         self.assertEqual(calendar.isleap(2000), 1)
 210         self.assertEqual(calendar.isleap(2001), 0)
 211         self.assertEqual(calendar.isleap(2002), 0)
 212         self.assertEqual(calendar.isleap(2003), 0)
 213
 214     def test_setfirstweekday(self):
 215         # Silence a py3k warning claiming to affect Lib/calendar.py
 216         with test_support.check_warnings():
 217             self.assertRaises(ValueError, calendar.setfirstweekday, 'flabber')
 218             self.assertRaises(ValueError, calendar.setfirstweekday, -1)
 219             self.assertRaises(ValueError, calendar.setfirstweekday, 200)
 220         orig = calendar.firstweekday()
 221         calendar.setfirstweekday(calendar.SUNDAY)
 222         self.assertEqual(calendar.firstweekday(), calendar.SUNDAY)
 223         calendar.setfirstweekday(calendar.MONDAY)
 224         self.assertEqual(calendar.firstweekday(), calendar.MONDAY)
 225         calendar.setfirstweekday(orig)
 226
 227     def test_enumerateweekdays(self):
 228         self.assertRaises(IndexError, calendar.day_abbr.__getitem__, -10)
 229         self.assertRaises(IndexError, calendar.day_name.__getitem__, 10)
 230         self.assertEqual(len([d for d in calendar.day_abbr]), 7)
 231
 232     def test_days(self):
 233         for attr in "day_name", "day_abbr":
 234             value = getattr(calendar, attr)
 235             self.assertEqual(len(value), 7)
 236             self.assertEqual(len(value[:]), 7)
 237             # ensure they're all unique
 238             self.assertEqual(len(set(value)), 7)
 239             # verify it "acts like a sequence" in two forms of iteration
 240             self.assertEqual(value[::-1], list(reversed(value)))
 241
 242     def test_months(self):
 243         for attr in "month_name", "month_abbr":
 244             value = getattr(calendar, attr)
 245             self.assertEqual(len(value), 13)
 246             self.assertEqual(len(value[:]), 13)
 247             self.assertEqual(value[0], "")
 248             # ensure they're all unique
 249             self.assertEqual(len(set(value)), 13)
 250             # verify it "acts like a sequence" in two forms of iteration
 251             self.assertEqual(value[::-1], list(reversed(value)))
 252
 253
 254 class MonthCalendarTestCase(unittest.TestCase):
 255     def setUp(self):
 256         self.oldfirstweekday = calendar.firstweekday()
 257         calendar.setfirstweekday(self.firstweekday)
 258
 259     def tearDown(self):
 260         calendar.setfirstweekday(self.oldfirstweekday)
 261
 262     def check_weeks(self, year, month, weeks):
 263         cal = calendar.monthcalendar(year, month)
 264         self.assertEqual(len(cal), len(weeks))
 265         for i in xrange(len(weeks)):
 266             self.assertEqual(weeks[i], sum(day != 0 for day in cal[i]))
 267
 268
 269 class MondayTestCase(MonthCalendarTestCase):
 270     firstweekday = calendar.MONDAY
 271
 272     def test_february(self):
 273         # A 28-day february starting on monday (7+7+7+7 days)
 274         self.check_weeks(1999, 2, (7, 7, 7, 7))
 275
 276         # A 28-day february starting on tuesday (6+7+7+7+1 days)
 277         self.check_weeks(2005, 2, (6, 7, 7, 7, 1))
 278
 279         # A 28-day february starting on sunday (1+7+7+7+6 days)
 280         self.check_weeks(1987, 2, (1, 7, 7, 7, 6))
 281
 282         # A 29-day february starting on monday (7+7+7+7+1 days)
 283         self.check_weeks(1988, 2, (7, 7, 7, 7, 1))
 284
 285         # A 29-day february starting on tuesday (6+7+7+7+2 days)
 286         self.check_weeks(1972, 2, (6, 7, 7, 7, 2))
 287
 288         # A 29-day february starting on sunday (1+7+7+7+7 days)
 289         self.check_weeks(2004, 2, (1, 7, 7, 7, 7))
 290
 291     def test_april(self):
 292         # A 30-day april starting on monday (7+7+7+7+2 days)
 293         self.check_weeks(1935, 4, (7, 7, 7, 7, 2))
 294
 295         # A 30-day april starting on tuesday (6+7+7+7+3 days)
 296         self.check_weeks(1975, 4, (6, 7, 7, 7, 3))
 297
 298         # A 30-day april starting on sunday (1+7+7+7+7+1 days)
 299         self.check_weeks(1945, 4, (1, 7, 7, 7, 7, 1))
 300
 301         # A 30-day april starting on saturday (2+7+7+7+7 days)
 302         self.check_weeks(1995, 4, (2, 7, 7, 7, 7))
 303
 304         # A 30-day april starting on friday (3+7+7+7+6 days)
 305         self.check_weeks(1994, 4, (3, 7, 7, 7, 6))
 306
 307     def test_december(self):
 308         # A 31-day december starting on monday (7+7+7+7+3 days)
 309         self.check_weeks(1980, 12, (7, 7, 7, 7, 3))
 310
 311         # A 31-day december starting on tuesday (6+7+7+7+4 days)
 312         self.check_weeks(1987, 12, (6, 7, 7, 7, 4))
 313
 314         # A 31-day december starting on sunday (1+7+7+7+7+2 days)
 315         self.check_weeks(1968, 12, (1, 7, 7, 7, 7, 2))
 316
 317         # A 31-day december starting on thursday (4+7+7+7+6 days)
 318         self.check_weeks(1988, 12, (4, 7, 7, 7, 6))
 319
 320         # A 31-day december starting on friday (3+7+7+7+7 days)
 321         self.check_weeks(2017, 12, (3, 7, 7, 7, 7))
 322
 323         # A 31-day december starting on saturday (2+7+7+7+7+1 days)
 324         self.check_weeks(2068, 12, (2, 7, 7, 7, 7, 1))
 325
 326
 327 class SundayTestCase(MonthCalendarTestCase):
 328     firstweekday = calendar.SUNDAY
 329
 330     def test_february(self):
 331         # A 28-day february starting on sunday (7+7+7+7 days)
 332         self.check_weeks(2009, 2, (7, 7, 7, 7))
 333
 334         # A 28-day february starting on monday (6+7+7+7+1 days)
 335         self.check_weeks(1999, 2, (6, 7, 7, 7, 1))
 336
 337         # A 28-day february starting on saturday (1+7+7+7+6 days)
 338         self.check_weeks(1997, 2, (1, 7, 7, 7, 6))
 339
 340         # A 29-day february starting on sunday (7+7+7+7+1 days)
 341         self.check_weeks(2004, 2, (7, 7, 7, 7, 1))
 342
 343         # A 29-day february starting on monday (6+7+7+7+2 days)
 344         self.check_weeks(1960, 2, (6, 7, 7, 7, 2))
 345
 346         # A 29-day february starting on saturday (1+7+7+7+7 days)
 347         self.check_weeks(1964, 2, (1, 7, 7, 7, 7))
 348
 349     def test_april(self):
 350         # A 30-day april starting on sunday (7+7+7+7+2 days)
 351         self.check_weeks(1923, 4, (7, 7, 7, 7, 2))
 352
 353         # A 30-day april starting on monday (6+7+7+7+3 days)
 354         self.check_weeks(1918, 4, (6, 7, 7, 7, 3))
 355
 356         # A 30-day april starting on saturday (1+7+7+7+7+1 days)
 357         self.check_weeks(1950, 4, (1, 7, 7, 7, 7, 1))
 358
 359         # A 30-day april starting on friday (2+7+7+7+7 days)
 360         self.check_weeks(1960, 4, (2, 7, 7, 7, 7))
 361
 362         # A 30-day april starting on thursday (3+7+7+7+6 days)
 363         self.check_weeks(1909, 4, (3, 7, 7, 7, 6))
 364
 365     def test_december(self):
 366         # A 31-day december starting on sunday (7+7+7+7+3 days)
 367         self.check_weeks(2080, 12, (7, 7, 7, 7, 3))
 368
 369         # A 31-day december starting on monday (6+7+7+7+4 days)
 370         self.check_weeks(1941, 12, (6, 7, 7, 7, 4))
 371
 372         # A 31-day december starting on saturday (1+7+7+7+7+2 days)
 373         self.check_weeks(1923, 12, (1, 7, 7, 7, 7, 2))
 374
 375         # A 31-day december starting on wednesday (4+7+7+7+6 days)
 376         self.check_weeks(1948, 12, (4, 7, 7, 7, 6))
 377
 378         # A 31-day december starting on thursday (3+7+7+7+7 days)
 379         self.check_weeks(1927, 12, (3, 7, 7, 7, 7))
 380
 381         # A 31-day december starting on friday (2+7+7+7+7+1 days)
 382         self.check_weeks(1995, 12, (2, 7, 7, 7, 7, 1))
 383
 384
 385 def test_main():
 386     test_support.run_unittest(
 387         OutputTestCase,
 388         CalendarTestCase,
 389         MondayTestCase,
 390         SundayTestCase
 391     )
 392
 393
 394 if __name__ == "__main__":
 395     test_main()