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# The ASF licenses this file to You under the Apache License, Version 2.0

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# http://www.apache.org/licenses/LICENSE-2.0

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"""Test for the matrix power integration test."""

import logging

import tempfile

import unittest

from apache_beam.examples import matrix_power

class MatrixPowerTest(unittest.TestCase):

MATRIX_INPUT = b'''

0:1 1 1

1:1 1 1

2:1 1 1

'''.strip()

VECTOR_INPUT = b'1 2 3'

EXPONENT = 3

EXPECTED_OUTPUT = '''

(0, 54.0)

(1, 54.0)

(2, 54.0)

'''.lstrip()

def create_temp_file(self, contents):

with tempfile.NamedTemporaryFile(delete=False) as f:

f.write(contents)

return f.name

def test_basics(self):

matrix_path = self.create_temp_file(self.MATRIX_INPUT)

vector_path = self.create_temp_file(self.VECTOR_INPUT)

matrix_power.run((

'--input_matrix=%s --input_vector=%s --exponent=%d --output=%s.result' %

(matrix_path, vector_path, self.EXPONENT, vector_path)).split())

# Parse result file and compare.

with open(vector_path + '.result-00000-of-00001') as result_file:

results = result_file.read()

self.assertEqual(sorted(self.EXPECTED_OUTPUT), sorted(results))

if __name__ == '__main__':

logging.getLogger().setLevel(logging.INFO)

unittest.main()