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# Copyright 2014 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import os
import unittest
from py_vulcanize import fake_fs
class FakeFSUnittest(unittest.TestCase):
def testBasic(self):
fs = fake_fs.FakeFS()
fs.AddFile('/blah/x', 'foobar')
with fs:
assert os.path.exists(os.path.normpath('/blah/x'))
self.assertEquals(
'foobar',
open(os.path.normpath('/blah/x'), 'r').read())
def testWithableOpen(self):
fs = fake_fs.FakeFS()
fs.AddFile('/blah/x', 'foobar')
with fs:
with open(os.path.normpath('/blah/x'), 'r') as f:
self.assertEquals('foobar', f.read())
def testWalk(self):
fs = fake_fs.FakeFS()
fs.AddFile('/x/w2/w3/z3.txt', '')
fs.AddFile('/x/w/z.txt', '')
fs.AddFile('/x/y.txt', '')
fs.AddFile('/a.txt', 'foobar')
with fs:
gen = os.walk(os.path.normpath('/'))
r = gen.next()
self.assertEquals((os.path.normpath('/'), ['x'], ['a.txt']), r)
r = gen.next()
self.assertEquals((os.path.normpath('/x'), ['w', 'w2'], ['y.txt']), r)
r = gen.next()
self.assertEquals((os.path.normpath('/x/w'), [], ['z.txt']), r)
r = gen.next()
self.assertEquals((os.path.normpath('/x/w2'), ['w3'], []), r)
r = gen.next()
self.assertEquals((os.path.normpath('/x/w2/w3'), [], ['z3.txt']), r)
self.assertRaises(StopIteration, gen.next)
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