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#!/usr/bin/env python
# Copyright (c) 2011, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"""Some simple additions to the unittest framework useful for gflags testing."""
import re
import unittest
def Sorted(lst):
"""Equivalent of sorted(), but not dependent on python version."""
sorted_list = lst[:]
sorted_list.sort()
return sorted_list
def MultiLineEqual(expected, actual):
"""Returns True if expected == actual, or returns False and logs."""
if actual == expected:
return True
print "Error: FLAGS.MainModuleHelp() didn't return the expected result."
print "Got:"
print actual
print "[End of got]"
actual_lines = actual.split("\n")
expected_lines = expected.split("\n")
num_actual_lines = len(actual_lines)
num_expected_lines = len(expected_lines)
if num_actual_lines != num_expected_lines:
print "Number of actual lines = %d, expected %d" % (
num_actual_lines, num_expected_lines)
num_to_match = min(num_actual_lines, num_expected_lines)
for i in range(num_to_match):
if actual_lines[i] != expected_lines[i]:
print "One discrepancy: Got:"
print actual_lines[i]
print "Expected:"
print expected_lines[i]
break
else:
# If we got here, found no discrepancy, print first new line.
if num_actual_lines > num_expected_lines:
print "New help line:"
print actual_lines[num_expected_lines]
elif num_expected_lines > num_actual_lines:
print "Missing expected help line:"
print expected_lines[num_actual_lines]
else:
print "Bug in this test -- discrepancy detected but not found."
return False
class TestCase(unittest.TestCase):
def assertListEqual(self, list1, list2):
"""Asserts that, when sorted, list1 and list2 are identical."""
# This exists in python 2.7, but not previous versions. Use the
# built-in version if possible.
if hasattr(unittest.TestCase, "assertListEqual"):
unittest.TestCase.assertListEqual(self, Sorted(list1), Sorted(list2))
else:
self.assertEqual(Sorted(list1), Sorted(list2))
def assertMultiLineEqual(self, expected, actual):
# This exists in python 2.7, but not previous versions. Use the
# built-in version if possible.
if hasattr(unittest.TestCase, "assertMultiLineEqual"):
unittest.TestCase.assertMultiLineEqual(self, expected, actual)
else:
self.assertTrue(MultiLineEqual(expected, actual))
def assertRaisesWithRegexpMatch(self, exception, regexp, fn, *args, **kwargs):
try:
fn(*args, **kwargs)
except exception, why:
self.assertTrue(re.search(regexp, str(why)),
"'%s' does not match '%s'" % (regexp, why))
return
self.fail(exception.__name__ + " not raised")
def main():
unittest.main()
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