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humanfriendly_tests.py
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/
humanfriendly_tests.py
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#!/usr/bin/env python
# Tests for the 'humanfriendly' module.
#
# Author: Peter Odding <peter.odding@paylogic.eu>
# Last Change: November 16, 2014
# URL: https://humanfriendly.readthedocs.org
# Standard library modules.
import math
import os
import time
import unittest
try:
# Python 2.x.
from StringIO import StringIO
except ImportError:
# Python 3.x.
from io import StringIO
# The module we are testing.
import humanfriendly
class HumanFriendlyTestCase(unittest.TestCase):
def test_pluralization(self):
self.assertEqual('1 word', humanfriendly.pluralize(1, 'word'))
self.assertEqual('2 words', humanfriendly.pluralize(2, 'word'))
self.assertEqual('1 box', humanfriendly.pluralize(1, 'box', 'boxes'))
self.assertEqual('2 boxes', humanfriendly.pluralize(2, 'box', 'boxes'))
def test_boolean_coercion(self):
for value in [True, 'TRUE', 'True', 'true', 'on', 'yes', '1']:
self.assertEqual(True, humanfriendly.coerce_boolean(value))
for value in [False, 'FALSE', 'False', 'false', 'off', 'no', '0']:
self.assertEqual(False, humanfriendly.coerce_boolean(value))
self.assertRaises(ValueError, humanfriendly.coerce_boolean, 'not a boolean')
def test_format_timespan(self):
minute = 60
hour = minute * 60
day = hour * 24
week = day * 7
year = week * 52
self.assertEqual('0 seconds', humanfriendly.format_timespan(0))
self.assertEqual('0.54 seconds', humanfriendly.format_timespan(0.54321))
self.assertEqual('1 second', humanfriendly.format_timespan(1))
self.assertEqual('3.14 seconds', humanfriendly.format_timespan(math.pi))
self.assertEqual('1 minute', humanfriendly.format_timespan(minute))
self.assertEqual('1 minute and 20 seconds', humanfriendly.format_timespan(80))
self.assertEqual('2 minutes', humanfriendly.format_timespan(minute * 2))
self.assertEqual('1 hour', humanfriendly.format_timespan(hour))
self.assertEqual('2 hours', humanfriendly.format_timespan(hour * 2))
self.assertEqual('1 day', humanfriendly.format_timespan(day))
self.assertEqual('2 days', humanfriendly.format_timespan(day * 2))
self.assertEqual('1 week', humanfriendly.format_timespan(week))
self.assertEqual('2 weeks', humanfriendly.format_timespan(week * 2))
self.assertEqual('1 year', humanfriendly.format_timespan(year))
self.assertEqual('2 years', humanfriendly.format_timespan(year * 2))
self.assertEqual('1 year, 2 weeks and 3 days', humanfriendly.format_timespan(year + week * 2 + day * 3 + hour * 12))
def test_parse_date(self):
self.assertEqual((2013, 6, 17, 0, 0, 0), humanfriendly.parse_date('2013-06-17'))
self.assertEqual((2013, 6, 17, 2, 47, 42), humanfriendly.parse_date('2013-06-17 02:47:42'))
self.assertRaises(humanfriendly.InvalidDate, humanfriendly.parse_date, '2013-06-XY')
def test_format_size(self):
self.assertEqual('0 bytes', humanfriendly.format_size(0))
self.assertEqual('1 byte', humanfriendly.format_size(1))
self.assertEqual('42 bytes', humanfriendly.format_size(42))
self.assertEqual('1 KB', humanfriendly.format_size(1024 ** 1))
self.assertEqual('1 MB', humanfriendly.format_size(1024 ** 2))
self.assertEqual('1 GB', humanfriendly.format_size(1024 ** 3))
self.assertEqual('1 TB', humanfriendly.format_size(1024 ** 4))
self.assertEqual('1 PB', humanfriendly.format_size(1024 ** 5))
def test_parse_size(self):
self.assertEqual(0, humanfriendly.parse_size('0B'))
self.assertEqual(42, humanfriendly.parse_size('42'))
self.assertEqual(42, humanfriendly.parse_size('42B'))
self.assertEqual(1024, humanfriendly.parse_size('1k'))
self.assertEqual(1024, humanfriendly.parse_size('1 KB'))
self.assertEqual(1024, humanfriendly.parse_size('1 kilobyte'))
self.assertEqual(1024 ** 3, humanfriendly.parse_size('1 GB'))
self.assertRaises(humanfriendly.InvalidSize, humanfriendly.parse_size, '1z')
self.assertRaises(humanfriendly.InvalidSize, humanfriendly.parse_size, 'a')
def test_round_number(self):
self.assertEqual('1', humanfriendly.round_number(1))
self.assertEqual('1', humanfriendly.round_number(1.0))
self.assertEqual('1.00', humanfriendly.round_number(1, keep_width=True))
self.assertEqual('3.14', humanfriendly.round_number(3.141592653589793))
def test_format_path(self):
abspath = os.path.join(os.environ['HOME'], '.vimrc')
self.assertEqual(os.path.join('~', '.vimrc'), humanfriendly.format_path(abspath))
def test_concatenate(self):
self.assertEqual(humanfriendly.concatenate([]), '')
self.assertEqual(humanfriendly.concatenate(['one']), 'one')
self.assertEqual(humanfriendly.concatenate(['one', 'two']), 'one and two')
self.assertEqual(humanfriendly.concatenate(['one', 'two', 'three']), 'one, two and three')
def test_timer(self):
for seconds, text in ((1, '1 second'),
(2, '2 seconds'),
(60, '1 minute'),
(60*2, '2 minutes'),
(60*60, '1 hour'),
(60*60*2, '2 hours'),
(60*60*24, '1 day'),
(60*60*24*2, '2 days'),
(60*60*24*7, '1 week'),
(60*60*24*7*2, '2 weeks')):
t = humanfriendly.Timer(time.time() - seconds)
self.assertEqual(humanfriendly.round_number(t.elapsed_time, keep_width=True), '%i.00' % seconds)
self.assertEqual(str(t), text)
# Test automatic timer.
automatic_timer = humanfriendly.Timer()
time.sleep(1)
self.assertEqual(normalize_timestamp(humanfriendly.round_number(automatic_timer.elapsed_time, keep_width=True)), '1.00')
# Test resumable timer.
resumable_timer = humanfriendly.Timer(resumable=True)
for i in range(2):
with resumable_timer:
time.sleep(1)
self.assertEqual(normalize_timestamp(humanfriendly.round_number(resumable_timer.elapsed_time, keep_width=True)), '2.00')
def test_spinner(self):
stream = StringIO()
spinner = humanfriendly.Spinner('test spinner', total=4, stream=stream, interactive=True)
for progress in [1, 2, 3, 4]:
spinner.step(progress=progress)
time.sleep(0.2)
spinner.clear()
lines = [line for line in stream.getvalue().split('\r') if line]
self.assertTrue(len(lines) > 0)
self.assertTrue(all('test spinner' in l for l in lines))
self.assertTrue(all('%' in l for l in lines))
self.assertEqual(sorted(set(lines)), sorted(lines))
def test_prompt_for_choice(self):
interactive_prompt = humanfriendly.interactive_prompt
try:
# Choice selection by full string match.
humanfriendly.interactive_prompt = lambda prompt: 'foo'
self.assertEqual(humanfriendly.prompt_for_choice(['foo', 'bar']), 'foo')
# Choice selection by substring input.
humanfriendly.interactive_prompt = lambda prompt: 'f'
self.assertEqual(humanfriendly.prompt_for_choice(['foo', 'bar']), 'foo')
# Choice selection by number.
humanfriendly.interactive_prompt = lambda prompt: '2'
self.assertEqual(humanfriendly.prompt_for_choice(['foo', 'bar']), 'bar')
# Choice selection by going with the default.
humanfriendly.interactive_prompt = lambda prompt: ''
self.assertEqual(humanfriendly.prompt_for_choice(['foo', 'bar'], default='bar'), 'bar')
# Invalid substrings are refused.
responses = ['', 'q', 'z']
humanfriendly.interactive_prompt = lambda prompt: responses.pop(0)
self.assertEqual(humanfriendly.prompt_for_choice(['foo', 'bar', 'baz']), 'baz')
# Choice selection by substring input requires an unambiguous substring match.
responses = ['a', 'q']
humanfriendly.interactive_prompt = lambda prompt: responses.pop(0)
self.assertEqual(humanfriendly.prompt_for_choice(['foo', 'bar', 'baz', 'qux']), 'qux')
# Invalid numbers are refused.
responses = ['42', '2']
humanfriendly.interactive_prompt = lambda prompt: responses.pop(0)
self.assertEqual(humanfriendly.prompt_for_choice(['foo', 'bar', 'baz']), 'bar')
finally:
humanfriendly.interactive_prompt = interactive_prompt
def normalize_timestamp(value, ndigits=1):
return '%.2f' % round(float(value), ndigits=ndigits)
if __name__ == '__main__':
unittest.main()