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# Copyright 2015 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 sys
import unittest
import py_utils
class PathTest(unittest.TestCase):
def testIsExecutable(self):
self.assertFalse(py_utils.IsExecutable('nonexistent_file'))
# We use actual files on disk instead of pyfakefs because the executable is
# set different on win that posix platforms and pyfakefs doesn't support
# win platform well.
self.assertFalse(py_utils.IsExecutable(_GetFileInTestDir('foo.txt')))
self.assertTrue(py_utils.IsExecutable(sys.executable))
def _GetFileInTestDir(file_name):
return os.path.join(os.path.dirname(__file__), 'test_data', file_name)
class WaitForTest(unittest.TestCase):
def testWaitForTrue(self):
def ReturnTrue():
return True
self.assertTrue(py_utils.WaitFor(ReturnTrue, .1))
def testWaitForFalse(self):
def ReturnFalse():
return False
with self.assertRaises(py_utils.TimeoutException):
py_utils.WaitFor(ReturnFalse, .1)
def testWaitForEventuallyTrue(self):
# Use list to pass to inner function in order to allow modifying the
# variable from the outer scope.
c = [0]
def ReturnCounterBasedValue():
c[0] += 1
return c[0] > 2
self.assertTrue(py_utils.WaitFor(ReturnCounterBasedValue, .5))
def testWaitForTrueLambda(self):
self.assertTrue(py_utils.WaitFor(lambda: True, .1))
def testWaitForFalseLambda(self):
with self.assertRaises(py_utils.TimeoutException):
py_utils.WaitFor(lambda: False, .1)
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