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"""
Unit tests for the stem.util.str_tools functions.
"""
import datetime
import unittest
from stem.util import str_tools
class TestStrTools(unittest.TestCase):
def test_to_camel_case(self):
"""
Checks the _to_camel_case() function.
"""
# test the pydoc example
self.assertEqual('I Like Pepperjack!', str_tools._to_camel_case('I_LIKE_PEPPERJACK!'))
# check a few edge cases
self.assertEqual('', str_tools._to_camel_case(''))
self.assertEqual('Hello', str_tools._to_camel_case('hello'))
self.assertEqual('Hello', str_tools._to_camel_case('HELLO'))
self.assertEqual('Hello World', str_tools._to_camel_case('hello__world'))
self.assertEqual('Hello\tworld', str_tools._to_camel_case('hello\tWORLD'))
self.assertEqual('Hello\t\tWorld', str_tools._to_camel_case('hello__world', '_', '\t'))
def test_crop(self):
# test the pydoc examples
self.assertEqual('This is a looo...', str_tools.crop('This is a looooong message', 17))
self.assertEqual('This is a...', str_tools.crop('This is a looooong message', 12))
self.assertEqual('', str_tools.crop('This is a looooong message', 3))
def test_size_label(self):
"""
Checks the size_label() function.
"""
# test the pydoc examples
self.assertEqual('1 MB', str_tools.size_label(2000000))
self.assertEqual('1.02 KB', str_tools.size_label(1050, 2))
self.assertEqual('1.025 Kilobytes', str_tools.size_label(1050, 3, True))
self.assertEqual('0 B', str_tools.size_label(0))
self.assertEqual('0 Bytes', str_tools.size_label(0, is_long = True))
self.assertEqual('0.00 B', str_tools.size_label(0, 2))
self.assertEqual('-10 B', str_tools.size_label(-10))
self.assertEqual('80 b', str_tools.size_label(10, is_bytes = False))
self.assertEqual('-1 MB', str_tools.size_label(-2000000))
# checking that we round down
self.assertEqual('23.43 Kb', str_tools.size_label(3000, 2, is_bytes = False))
self.assertRaises(TypeError, str_tools.size_label, None)
self.assertRaises(TypeError, str_tools.size_label, 'hello world')
def test_time_label(self):
"""
Checks the time_label() function.
"""
# test the pydoc examples
self.assertEqual('2h', str_tools.time_label(10000))
self.assertEqual('1.0 minute', str_tools.time_label(61, 1, True))
self.assertEqual('1.01 minutes', str_tools.time_label(61, 2, True))
self.assertEqual('0s', str_tools.time_label(0))
self.assertEqual('0 seconds', str_tools.time_label(0, is_long = True))
self.assertEqual('0.00s', str_tools.time_label(0, 2))
self.assertEqual('-10s', str_tools.time_label(-10))
self.assertRaises(TypeError, str_tools.time_label, None)
self.assertRaises(TypeError, str_tools.time_label, 'hello world')
def test_time_labels(self):
"""
Checks the time_labels() function.
"""
# test the pydoc examples
self.assertEqual(['6m', '40s'], str_tools.time_labels(400))
self.assertEqual(['1 hour', '40 seconds'], str_tools.time_labels(3640, True))
self.assertEqual([], str_tools.time_labels(0))
self.assertEqual(['-10s'], str_tools.time_labels(-10))
self.assertRaises(TypeError, str_tools.time_labels, None)
self.assertRaises(TypeError, str_tools.time_labels, 'hello world')
def test_short_time_label(self):
"""
Checks the short_time_label() function.
"""
# test the pydoc examples
self.assertEqual('01:51', str_tools.short_time_label(111))
self.assertEqual('6-07:08:20', str_tools.short_time_label(544100))
self.assertEqual('00:00', str_tools.short_time_label(0))
self.assertRaises(TypeError, str_tools.short_time_label, None)
self.assertRaises(TypeError, str_tools.short_time_label, 'hello world')
self.assertRaises(ValueError, str_tools.short_time_label, -5)
def test_parse_short_time_label(self):
"""
Checks the parse_short_time_label() function.
"""
# test the pydoc examples
self.assertEqual(111, str_tools.parse_short_time_label('01:51'))
self.assertEqual(544100, str_tools.parse_short_time_label('6-07:08:20'))
self.assertEqual(110, str_tools.parse_short_time_label('01:50.62'))
self.assertEqual(0, str_tools.parse_short_time_label('00:00'))
# these aren't technically valid, but might as well allow unnecessary
# digits to be dropped
self.assertEqual(300, str_tools.parse_short_time_label('05:0'))
self.assertEqual(300, str_tools.parse_short_time_label('5:00'))
self.assertRaises(TypeError, str_tools.parse_short_time_label, None)
self.assertRaises(TypeError, str_tools.parse_short_time_label, 100)
self.assertRaises(ValueError, str_tools.parse_short_time_label, 'blarg')
self.assertRaises(ValueError, str_tools.parse_short_time_label, '00')
self.assertRaises(ValueError, str_tools.parse_short_time_label, '05:')
self.assertRaises(ValueError, str_tools.parse_short_time_label, '05a:00')
self.assertRaises(ValueError, str_tools.parse_short_time_label, '-05:00')
def test_parse_iso_timestamp(self):
"""
Checks the _parse_iso_timestamp() function.
"""
test_inputs = {
'2012-11-08T16:48:41.420251':
datetime.datetime(2012, 11, 8, 16, 48, 41, 420251),
'2012-11-08T16:48:41.000000':
datetime.datetime(2012, 11, 8, 16, 48, 41, 0),
'2012-11-08T16:48:41':
datetime.datetime(2012, 11, 8, 16, 48, 41, 0),
}
for arg, expected in test_inputs.items():
self.assertEqual(expected, str_tools._parse_iso_timestamp(arg))
invalid_input = [
None,
32,
'hello world',
'2012-11-08T16:48:41.42025', # too few microsecond digits
'2012-11-08T16:48:41.4202511', # too many microsecond digits
'2012-11-08T16:48',
]
for arg in invalid_input:
self.assertRaises(ValueError, str_tools._parse_iso_timestamp, arg)
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