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Skip large file tests on Windowns and OSX.

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Reduce large file size to 2**31 (and a bit).
This commit is contained in:
Guido van Rossum 2007-04-10 20:08:41 +00:00
parent 53807dabf0
commit 34d69e57e3
1 changed files with 25 additions and 10 deletions
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35
Lib/test/test_io.py
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@ -1,5 +1,6 @@
"""Unit tests for io.py.""" """Unit tests for io.py."""
import sys
import unittest import unittest
from itertools import chain from itertools import chain
from test import test_support from test import test_support
@ -90,21 +91,23 @@ class IOTest(unittest.TestCase):
f.seek(-2, 2) f.seek(-2, 2)
f.truncate() f.truncate()
LARGE = 2**31
def large_file_ops(self, f): def large_file_ops(self, f):
assert f.readable() assert f.readable()
assert f.writable() assert f.writable()
self.assertEqual(f.seek(2**32), 2**32) self.assertEqual(f.seek(self.LARGE), self.LARGE)
self.assertEqual(f.tell(), 2**32) self.assertEqual(f.tell(), self.LARGE)
self.assertEqual(f.write(b"xxx"), 3) self.assertEqual(f.write(b"xxx"), 3)
self.assertEqual(f.tell(), 2**32 + 3) self.assertEqual(f.tell(), self.LARGE + 3)
self.assertEqual(f.seek(-1, 1), 2**32 + 2) self.assertEqual(f.seek(-1, 1), self.LARGE + 2)
f.truncate() f.truncate()
self.assertEqual(f.tell(), 2**32 + 2) self.assertEqual(f.tell(), self.LARGE + 2)
self.assertEqual(f.seek(0, 2), 2**32 + 2) self.assertEqual(f.seek(0, 2), self.LARGE + 2)
f.truncate(2**32 + 1) f.truncate(self.LARGE + 1)
self.assertEqual(f.tell(), 2**32 + 1) self.assertEqual(f.tell(), self.LARGE + 1)
self.assertEqual(f.seek(0, 2), 2**32 + 1) self.assertEqual(f.seek(0, 2), self.LARGE + 1)
self.assertEqual(f.seek(-1, 2), 2**32) self.assertEqual(f.seek(-1, 2), self.LARGE)
self.assertEqual(f.read(2), b"x") self.assertEqual(f.read(2), b"x")
def read_ops(self, f): def read_ops(self, f):
@ -148,6 +151,18 @@ class IOTest(unittest.TestCase):
self.read_ops(f) self.read_ops(f)
def test_large_file_ops(self): def test_large_file_ops(self):
# On Windows and Mac OSX this test comsumes large resources; It takes
# a long time to build the >2GB file and takes >2GB of disk space
# therefore the resource must be enabled to run this test.
if sys.platform[:3] == 'win' or sys.platform == 'darwin':
if not test_support.is_resource_enabled("largefile"):
print("\nTesting large file ops skipped on %s." % sys.platform,
file=sys.stderr)
print("It requires %d bytes and a long time." % self.LARGE,
file=sys.stderr)
print("Use 'regrtest.py -u largefile test_io' to run it.",
file=sys.stderr)
return
f = io.open(test_support.TESTFN, "w+b", buffering=0) f = io.open(test_support.TESTFN, "w+b", buffering=0)
self.large_file_ops(f) self.large_file_ops(f)
f.close() f.close()