[Python-checkins] CVS: python/dist/src/Lib/test test_os.py,1.6,1.7

2001年10月18日 13:34:27 -0700

Update of /cvsroot/python/python/dist/src/Lib/test
In directory usw-pr-cvs1:/tmp/cvs-serv7266/Lib/test
Modified Files:
	test_os.py 
Log Message:
SF patch #462296: Add attributes to os.stat results; by Nick Mathewson.
This is a big one, touching lots of files. Some of the platforms
aren't tested yet. Briefly, this changes the return value of the
os/posix functions stat(), fstat(), statvfs(), fstatvfs(), and the
time functions localtime(), gmtime(), and strptime() from tuples into
pseudo-sequences. When accessed as a sequence, they behave exactly as
before. But they also have attributes like st_mtime or tm_year. The
stat return value, moreover, has a few platform-specific attributes
that are not available through the sequence interface (because
everybody expects the sequence to have a fixed length, these couldn't
be added there). If your platform's struct stat doesn't define
st_blksize, st_blocks or st_rdev, they won't be accessible from Python
either.
(Still missing is a documentation update.)
Index: test_os.py
===================================================================
RCS file: /cvsroot/python/python/dist/src/Lib/test/test_os.py,v
retrieving revision 1.6
retrieving revision 1.7
diff -C2 -d -r1.6 -r1.7
*** test_os.py	2001年09月20日 21:33:42	1.6
--- test_os.py	2001年10月18日 20:34:25	1.7
***************
*** 12,16 ****
 from test_support import TESTFN, run_unittest

- 
 class TemporaryFileTests(unittest.TestCase):
 def setUp(self):
--- 12,15 ----
***************
*** 62,69 ****
 self.check_tempfile(os.tmpnam())

 def test_main():
 run_unittest(TemporaryFileTests)
! 

 if __name__ == "__main__":
--- 61,186 ----
 self.check_tempfile(os.tmpnam())

+ # Test attributes on return values from os.*stat* family.
+ class StatAttributeTests(unittest.TestCase):
+ def setUp(self):
+ os.mkdir(TESTFN)
+ self.fname = os.path.join(TESTFN, "f1")
+ f = open(self.fname, 'wb')
+ f.write("ABC")
+ f.close()
+ 
+ def tearDown(self):
+ os.unlink(self.fname)
+ os.rmdir(TESTFN)

+ def test_stat_attributes(self):
+ if not hasattr(os, "stat"):
+ return
+ 
+ import stat
+ result = os.stat(self.fname)
+ 
+ # Make sure direct access works
+ self.assertEquals(result[stat.ST_SIZE], 3)
+ self.assertEquals(result.st_size, 3)
+ 
+ import sys
+ 
+ # Make sure all the attributes are there
+ members = dir(result)
+ for name in dir(stat):
+ if name[:3] == 'ST_':
+ attr = name.lower()
+ self.assertEquals(getattr(result, attr),
+ result[getattr(stat, name)])
+ self.assert_(attr in members)
+ 
+ try:
+ result[200]
+ self.fail("No exception thrown")
+ except IndexError:
+ pass
+ 
+ # Make sure that assignment fails
+ try:
+ result.st_mode = 1
+ self.fail("No exception thrown")
+ except TypeError:
+ pass
+ 
+ try:
+ result.st_rdev = 1
+ self.fail("No exception thrown")
+ except TypeError:
+ pass
+ 
+ try:
+ result.parrot = 1
+ self.fail("No exception thrown")
+ except AttributeError:
+ pass
+ 
+ # Use the stat_result constructor with a too-short tuple.
+ try:
+ result2 = os.stat_result((10,))
+ self.fail("No exception thrown")
+ except TypeError:
+ pass
+ 
+ # Use the constructr with a too-long tuple.
+ try:
+ result2 = os.stat_result((0,1,2,3,4,5,6,7,8,9,10,11,12,13,14))
+ except TypeError:
+ pass
+ 
+ 
+ def test_statvfs_attributes(self):
+ if not hasattr(os, "statvfs"):
+ return
+ 
+ import statvfs
+ result = os.statvfs(self.fname)
+ 
+ # Make sure direct access works
+ self.assertEquals(result.f_bfree, result[statvfs.F_BFREE])
+ 
+ # Make sure all the attributes are there
+ members = dir(result)
+ for name in dir(statvfs):
+ if name[:2] == 'F_':
+ attr = name.lower()
+ self.assertEquals(getattr(result, attr),
+ result[getattr(statvfs, name)])
+ self.assert_(attr in members)
+ 
+ # Make sure that assignment really fails
+ try:
+ result.f_bfree = 1
+ self.fail("No exception thrown")
+ except TypeError:
+ pass
+ 
+ try:
+ result.parrot = 1
+ self.fail("No exception thrown")
+ except AttributeError:
+ pass
+ 
+ # Use the constructor with a too-short tuple.
+ try:
+ result2 = os.statvfs_result((10,))
+ self.fail("No exception thrown")
+ except TypeError:
+ pass
+ 
+ # Use the constructr with a too-long tuple.
+ try:
+ result2 = os.statvfs_result((0,1,2,3,4,5,6,7,8,9,10,11,12,13,14))
+ except TypeError:
+ pass
+ 
 def test_main():
 run_unittest(TemporaryFileTests)
! run_unittest(StatAttributeTests)

 if __name__ == "__main__":