[Python-checkins] r65102 - python/trunk/Lib/test/test_fileio.py
benjamin.peterson
python-checkins at python.org
Fri Jul 18 16:14:42 CEST 2008
Author: benjamin.peterson
Date: Fri Jul 18 16:14:41 2008
New Revision: 65102
Log:
backport test_fileio
Added:
python/trunk/Lib/test/test_fileio.py (contents, props changed)
Added: python/trunk/Lib/test/test_fileio.py
==============================================================================
--- (empty file)
+++ python/trunk/Lib/test/test_fileio.py Fri Jul 18 16:14:41 2008
@@ -0,0 +1,240 @@
+# Adapted from test_file.py by Daniel Stutzbach
+#from __future__ import unicode_literals
+
+import sys
+import os
+import unittest
+from array import array
+from weakref import proxy
+
+from test.test_support import TESTFN, findfile, run_unittest
+from UserList import UserList
+
+import _fileio
+
+class AutoFileTests(unittest.TestCase):
+ # file tests for which a test file is automatically set up
+
+ def setUp(self):
+ self.f = _fileio._FileIO(TESTFN, 'w')
+
+ def tearDown(self):
+ if self.f:
+ self.f.close()
+ os.remove(TESTFN)
+
+ def testWeakRefs(self):
+ # verify weak references
+ p = proxy(self.f)
+ p.write(bytes(range(10)))
+ self.assertEquals(self.f.tell(), p.tell())
+ self.f.close()
+ self.f = None
+ self.assertRaises(ReferenceError, getattr, p, 'tell')
+
+ def testSeekTell(self):
+ self.f.write(bytes(bytearray(range(20))))
+ self.assertEquals(self.f.tell(), 20)
+ self.f.seek(0)
+ self.assertEquals(self.f.tell(), 0)
+ self.f.seek(10)
+ self.assertEquals(self.f.tell(), 10)
+ self.f.seek(5, 1)
+ self.assertEquals(self.f.tell(), 15)
+ self.f.seek(-5, 1)
+ self.assertEquals(self.f.tell(), 10)
+ self.f.seek(-5, 2)
+ self.assertEquals(self.f.tell(), 15)
+
+ def testAttributes(self):
+ # verify expected attributes exist
+ f = self.f
+
+ self.assertEquals(f.mode, "w")
+ self.assertEquals(f.closed, False)
+
+ # verify the attributes are readonly
+ for attr in 'mode', 'closed':
+ self.assertRaises((AttributeError, TypeError),
+ setattr, f, attr, 'oops')
+
+ def testReadinto(self):
+ # verify readinto
+ self.f.write(bytes(bytearray([1, 2])))
+ self.f.close()
+ a = array('b', b'x'*10)
+ self.f = _fileio._FileIO(TESTFN, 'r')
+ n = self.f.readinto(a)
+ self.assertEquals(array('b', [1, 2]), a[:n])
+
+ def testRepr(self):
+ self.assertEquals(repr(self.f),
+ "_fileio._FileIO(%d, %s)" % (self.f.fileno(),
+ repr(self.f.mode)))
+
+ def testErrors(self):
+ f = self.f
+ self.assert_(not f.isatty())
+ self.assert_(not f.closed)
+ #self.assertEquals(f.name, TESTFN)
+ self.assertRaises(ValueError, f.read, 10) # Open for reading
+ f.close()
+ self.assert_(f.closed)
+ f = _fileio._FileIO(TESTFN, 'r')
+ self.assertRaises(TypeError, f.readinto, "")
+ self.assert_(not f.closed)
+ f.close()
+ self.assert_(f.closed)
+
+ def testMethods(self):
+ methods = ['fileno', 'isatty', 'read', 'readinto',
+ 'seek', 'tell', 'truncate', 'write', 'seekable',
+ 'readable', 'writable']
+ if sys.platform.startswith('atheos'):
+ methods.remove('truncate')
+
+ self.f.close()
+ self.assert_(self.f.closed)
+
+ for methodname in methods:
+ method = getattr(self.f, methodname)
+ # should raise on closed file
+ self.assertRaises(ValueError, method)
+
+
+class OtherFileTests(unittest.TestCase):
+
+ def testAbles(self):
+ try:
+ f = _fileio._FileIO(TESTFN, "w")
+ self.assertEquals(f.readable(), False)
+ self.assertEquals(f.writable(), True)
+ self.assertEquals(f.seekable(), True)
+ f.close()
+
+ f = _fileio._FileIO(TESTFN, "r")
+ self.assertEquals(f.readable(), True)
+ self.assertEquals(f.writable(), False)
+ self.assertEquals(f.seekable(), True)
+ f.close()
+
+ f = _fileio._FileIO(TESTFN, "a+")
+ self.assertEquals(f.readable(), True)
+ self.assertEquals(f.writable(), True)
+ self.assertEquals(f.seekable(), True)
+ self.assertEquals(f.isatty(), False)
+ f.close()
+
+ if sys.platform != "win32":
+ try:
+ f = _fileio._FileIO("/dev/tty", "a")
+ except EnvironmentError:
+ # When run in a cron job there just aren't any
+ # ttys, so skip the test. This also handles other
+ # OS'es that don't support /dev/tty.
+ pass
+ else:
+ f = _fileio._FileIO("/dev/tty", "a")
+ self.assertEquals(f.readable(), False)
+ self.assertEquals(f.writable(), True)
+ if sys.platform != "darwin" and \
+ not sys.platform.startswith('freebsd') and \
+ not sys.platform.startswith('sunos'):
+ # Somehow /dev/tty appears seekable on some BSDs
+ self.assertEquals(f.seekable(), False)
+ self.assertEquals(f.isatty(), True)
+ f.close()
+ finally:
+ os.unlink(TESTFN)
+
+ def testModeStrings(self):
+ # check invalid mode strings
+ for mode in ("", "aU", "wU+", "rb", "rt"):
+ try:
+ f = _fileio._FileIO(TESTFN, mode)
+ except ValueError:
+ pass
+ else:
+ f.close()
+ self.fail('%r is an invalid file mode' % mode)
+
+ def testUnicodeOpen(self):
+ # verify repr works for unicode too
+ f = _fileio._FileIO(str(TESTFN), "w")
+ f.close()
+ os.unlink(TESTFN)
+
+ def testBadModeArgument(self):
+ # verify that we get a sensible error message for bad mode argument
+ bad_mode = "qwerty"
+ try:
+ f = _fileio._FileIO(TESTFN, bad_mode)
+ except ValueError as msg:
+ if msg.args[0] != 0:
+ s = str(msg)
+ if s.find(TESTFN) != -1 or s.find(bad_mode) == -1:
+ self.fail("bad error message for invalid mode: %s" % s)
+ # if msg.args[0] == 0, we're probably on Windows where there may be
+ # no obvious way to discover why open() failed.
+ else:
+ f.close()
+ self.fail("no error for invalid mode: %s" % bad_mode)
+
+ def testTruncateOnWindows(self):
+ def bug801631():
+ # SF bug <http://www.python.org/sf/801631>
+ # "file.truncate fault on windows"
+ f = _fileio._FileIO(TESTFN, 'w')
+ f.write(bytes(bytearray(range(11))))
+ f.close()
+
+ f = _fileio._FileIO(TESTFN,'r+')
+ data = f.read(5)
+ if data != bytes(bytearray(range(5))):
+ self.fail("Read on file opened for update failed %r" % data)
+ if f.tell() != 5:
+ self.fail("File pos after read wrong %d" % f.tell())
+
+ f.truncate()
+ if f.tell() != 5:
+ self.fail("File pos after ftruncate wrong %d" % f.tell())
+
+ f.close()
+ size = os.path.getsize(TESTFN)
+ if size != 5:
+ self.fail("File size after ftruncate wrong %d" % size)
+
+ try:
+ bug801631()
+ finally:
+ os.unlink(TESTFN)
+
+ def testAppend(self):
+ try:
+ f = open(TESTFN, 'wb')
+ f.write(b'spam')
+ f.close()
+ f = open(TESTFN, 'ab')
+ f.write(b'eggs')
+ f.close()
+ f = open(TESTFN, 'rb')
+ d = f.read()
+ f.close()
+ self.assertEqual(d, b'spameggs')
+ finally:
+ try:
+ os.unlink(TESTFN)
+ except:
+ pass
+
+def test_main():
+ # Historically, these tests have been sloppy about removing TESTFN.
+ # So get rid of it no matter what.
+ try:
+ run_unittest(AutoFileTests, OtherFileTests)
+ finally:
+ if os.path.exists(TESTFN):
+ os.unlink(TESTFN)
+
+if __name__ == '__main__':
+ test_main()
More information about the Python-checkins
mailing list