[Python-checkins] python/dist/src/Lib/test test_time.py,1.11,1.12

[gvanrossum@users.sourceforge.net]

Update of /cvsroot/python/python/dist/src/Lib/test
In directory sc8-pr-cvs1:/tmp/cvs-serv14617/Lib/test

Modified Files:
	test_time.py 
Log Message:
- New function time.tzset() provides access to the C library tzet()
  function, if supported.  (SF patch #675422, by Stuart Bishop.)


Index: test_time.py
===================================================================
RCS file: /cvsroot/python/python/dist/src/Lib/test/test_time.py,v
retrieving revision 1.11
retrieving revision 1.12
diff -C2 -d -r1.11 -r1.12
*** test_time.py	23 Jul 2002 19:04:06 -0000	1.11
--- test_time.py	14 Mar 2003 21:51:33 -0000	1.12
***************
*** 49,57 ****
                  self.fail('conversion specifier: %r failed.' % format)
  
- 
      def test_asctime(self):
          time.asctime(time.gmtime(self.t))
          self.assertRaises(TypeError, time.asctime, 0)
  
  
  def test_main():
--- 49,138 ----
                  self.fail('conversion specifier: %r failed.' % format)
  
      def test_asctime(self):
          time.asctime(time.gmtime(self.t))
          self.assertRaises(TypeError, time.asctime, 0)
  
+     def test_tzset(self):
+         from os import environ
+ 
+         # Epoch time of midnight Dec 25th 2002. Never DST in northern 
+         # hemisphere.
+         xmas2002 = 1040774400.0 
+ 
+         org_TZ = environ.get('TZ',None)
+         try:
+ 
+             # Make sure we can switch to UTC time and results are correct
+             # Note that unknown timezones default to UTC.
+             for tz in ('UTC','GMT','Luna/Tycho'):
+                 environ['TZ'] = 'US/Eastern'
+                 time.tzset()
+                 environ['TZ'] = tz
+                 time.tzset()
+                 self.failUnlessEqual(
+                     time.gmtime(xmas2002),time.localtime(xmas2002)
+                     )
+                 self.failUnlessEqual(time.timezone,time.altzone)
+                 self.failUnlessEqual(time.daylight,0) 
+                 self.failUnlessEqual(time.timezone,0)
+                 self.failUnlessEqual(time.altzone,0)
+                 self.failUnlessEqual(time.localtime(xmas2002).tm_isdst,0)
+ 
+             # Make sure we can switch to US/Eastern
+             environ['TZ'] = 'US/Eastern'
+             time.tzset()
+             self.failIfEqual(time.gmtime(xmas2002),time.localtime(xmas2002))
+             self.failUnlessEqual(time.tzname,('EST','EDT'))
+             self.failUnlessEqual(len(time.tzname),2)
+             self.failUnlessEqual(time.daylight,1)
+             self.failUnlessEqual(time.timezone,18000)
+             self.failUnlessEqual(time.altzone,14400)
+             self.failUnlessEqual(time.localtime(xmas2002).tm_isdst,0)
+             self.failUnlessEqual(len(time.tzname),2)
+ 
+             # Now go to the southern hemisphere. We want somewhere all OS's
+             # know about that has DST.
+             environ['TZ'] = 'Australia/Melbourne'
+             time.tzset()
+             self.failIfEqual(time.gmtime(xmas2002),time.localtime(xmas2002))
+             self.failUnless(time.tzname[0] in ('EST','AEST'))
+             self.failUnless(time.tzname[1] in ('EST','EDT','AEDT'))
+             self.failUnlessEqual(len(time.tzname),2)
+             self.failUnlessEqual(time.daylight,1)
+             self.failUnlessEqual(time.timezone,-36000)
+             self.failUnlessEqual(time.altzone,-39600)
+             self.failUnlessEqual(time.localtime(xmas2002).tm_isdst,1)
+ 
+             # Get some times from a timezone that isn't wallclock timezone
+             del environ['TZ']
+             time.tzset()
+             if time.timezone == 0:
+                 environ['TZ'] = 'US/Eastern'
+             else:
+                 environ['TZ'] = 'UTC'
+             time.tzset()
+             nonlocal = time.localtime(xmas2002)
+ 
+             # Then the same time in wallclock timezone
+             del environ['TZ']
+             time.tzset()
+             local = time.localtime(xmas2002)
+ 
+             # And make sure they arn't the same
+             self.failIfEqual(local,nonlocal) 
+ 
+             # Do some basic sanity checking after wallclock time set
+             self.failUnlessEqual(len(time.tzname),2)
+             time.daylight
+             time.timezone
+             time.altzone
+         finally:
+             # Repair TZ environment variable in case any other tests
+             # rely on it.
+             if org_TZ is not None:
+                 environ['TZ'] = org_TZ
+             elif environ.has_key('TZ'):
+                 del environ['TZ']
+             
  
  def test_main():