#!/usr/bin/env python
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
"""
tests
for mozfile.NamedTemporaryFile
"""
import os
import unittest
import mozfile
import mozunit
import six
class TestNamedTemporaryFile(unittest.TestCase):
"""test our fix for NamedTemporaryFile"""
def test_named_temporary_file(self):
"""Ensure the fix for re-opening a NamedTemporaryFile works
Refer to
https://bugzilla.mozilla.org/show_bug.cgi?id=818777
and https://bugzilla.mozilla.org/show_bug.cgi?id=821362
"""
test_string = b
"A simple test"
with mozfile.NamedTemporaryFile()
as temp:
# Test we can write to file
temp.write(test_string)
# Forced flush, so that we can read later
temp.flush()
# Test we can open the file again on all platforms
self.assertEqual(open(temp.name,
"rb").read(), test_string)
def test_iteration(self):
"""ensure the line iterator works"""
# make a file and write to it
tf = mozfile.NamedTemporaryFile()
notes = [b
"doe", b
"rae", b
"mi"]
for note
in notes:
tf.write(b
"%s\n" % note)
tf.flush()
# now read from it
tf.seek(0)
lines = [line.rstrip(b
"\n")
for line
in tf.readlines()]
self.assertEqual(lines, notes)
# now read from it iteratively
lines = []
for line
in tf:
lines.append(line.strip())
self.assertEqual(lines, [])
# because we did not seek(0)
tf.seek(0)
lines = []
for line
in tf:
lines.append(line.strip())
self.assertEqual(lines, notes)
def test_delete(self):
"""ensure ``delete=True/False`` works as expected"""
# make a deleteable file; ensure it gets cleaned up
path =
None
with mozfile.NamedTemporaryFile(delete=
True)
as tf:
path = tf.name
self.assertTrue(isinstance(path, six.string_types))
self.assertFalse(os.path.exists(path))
# it is also deleted when __del__ is called
# here we will do so explicitly
tf = mozfile.NamedTemporaryFile(delete=
True)
path = tf.name
self.assertTrue(os.path.exists(path))
del tf
self.assertFalse(os.path.exists(path))
# Now the same thing but we won't delete the file
path =
None
try:
with mozfile.NamedTemporaryFile(delete=
False)
as tf:
path = tf.name
self.assertTrue(os.path.exists(path))
finally:
if path
and os.path.exists(path):
os.remove(path)
path =
None
try:
tf = mozfile.NamedTemporaryFile(delete=
False)
path = tf.name
self.assertTrue(os.path.exists(path))
del tf
self.assertTrue(os.path.exists(path))
finally:
if path
and os.path.exists(path):
os.remove(path)
if __name__ ==
"__main__":
mozunit.main()
