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#!/usr/bin/python2
#
# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Unit tests for histogram.py."""
import unittest
from update_payload import format_utils
from update_payload import histogram
class HistogramTest(unittest.TestCase):
""" Tests histogram"""
@staticmethod
def AddHumanReadableSize(size):
fmt = format_utils.BytesToHumanReadable(size)
return '%s (%s)' % (size, fmt) if fmt else str(size)
def CompareToExpectedDefault(self, actual_str):
expected_str = (
'Yes |################ | 5 (83.3%)\n'
'No |### | 1 (16.6%)'
)
self.assertEqual(actual_str, expected_str)
def testExampleHistogram(self):
self.CompareToExpectedDefault(str(histogram.Histogram(
[('Yes', 5), ('No', 1)])))
def testFromCountDict(self):
self.CompareToExpectedDefault(str(histogram.Histogram.FromCountDict(
{'Yes': 5, 'No': 1})))
def testFromKeyList(self):
self.CompareToExpectedDefault(str(histogram.Histogram.FromKeyList(
['Yes', 'Yes', 'No', 'Yes', 'Yes', 'Yes'])))
def testCustomScale(self):
expected_str = (
'Yes |#### | 5 (83.3%)\n'
'No | | 1 (16.6%)'
)
actual_str = str(histogram.Histogram([('Yes', 5), ('No', 1)], scale=5))
self.assertEqual(actual_str, expected_str)
def testCustomFormatter(self):
expected_str = (
'Yes |################ | 5000 (4.8 KiB) (83.3%)\n'
'No |### | 1000 (16.6%)'
)
actual_str = str(histogram.Histogram(
[('Yes', 5000), ('No', 1000)], formatter=self.AddHumanReadableSize))
self.assertEqual(actual_str, expected_str)
if __name__ == '__main__':
unittest.main()
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