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#!/usr/bin/python -S
#
# Copyright 2014 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
sum_bits_test.py: Tests for sum_bits.py
"""
import cStringIO
import unittest
import rappor
import sum_bits # module under test
CSV_IN = """\
user_id,cohort,bloom,prr,rappor
5,1,dummy,dummy,0000111100001111
5,1,dummy,dummy,0000000000111100
"""
# NOTE: bit order is reversed.
EXPECTED_CSV_OUT = """\
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0\r
2,1,1,2,2,1,1,0,0,1,1,1,1,0,0,0,0\r
"""
TOO_MANY_COLUMNS = """\
user_id,cohort,rappor
5,1,0000111100001111,extra
"""
class SumBitsTest(unittest.TestCase):
def setUp(self):
self.params = rappor.Params()
self.params.num_bloombits = 16
self.params.num_cohorts = 2
def testSum(self):
stdin = cStringIO.StringIO(CSV_IN)
stdout = cStringIO.StringIO()
sum_bits.SumBits(self.params, stdin, stdout)
self.assertMultiLineEqual(EXPECTED_CSV_OUT, stdout.getvalue())
def testErrors(self):
stdin = cStringIO.StringIO(TOO_MANY_COLUMNS)
stdout = cStringIO.StringIO()
self.assertRaises(
RuntimeError, sum_bits.SumBits, self.params, stdin, stdout)
if __name__ == '__main__':
unittest.main()
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