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tests.py
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tests.py
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"""
Tests of utility functions. Though they aren't part of the "main" app,
there's no other app to include them with!
"""
import datetime
import os
import shutil
import sys
import tempfile
import unittest
sys.path += [os.path.realpath('..')]
try:
from unittest import TestCase
except ImportError:
from django.utils.unittest import TestCase
from general import datediff, version_diff, ensure_dir
class DateDiffTestCase(TestCase):
"""
Unit tests for datediff function
"""
def test_units(self):
"""
A single difference, tested across different units
"""
d1 = datetime.datetime(2000, 1, 1)
d2 = datetime.datetime(2004, 1, 1) # test 4 years apart
self.assertEqual(datediff(d2, d1, units="microsecond"), 1E6*60*60*24*(365*4 + 1), "4 years (with leap year), in microseconds")
self.assertEqual(datediff(d2, d1, units="microseconds"), 1E6*60*60*24*(365*4 + 1), "4 years (with leap year), in microseconds")
self.assertEqual(datediff(d2, d1), 60*60*24*(365*4 + 1), "4 years (with leap year), in seconds (default)")
self.assertEqual(datediff(d2, d1, units="second"), 60*60*24*(365*4 + 1), "4 years (with leap year), in seconds")
self.assertEqual(datediff(d2, d1, units="seconds"), 60*60*24*(365*4 + 1), "4 years (with leap year), in seconds")
self.assertEqual(datediff(d2, d1, units="minute"), 60*24*(365*4 + 1), "4 years (with leap year), in minutes")
self.assertEqual(datediff(d2, d1, units="minutes"), 60*24*(365*4 + 1), "4 years (with leap year), in minutes")
self.assertEqual(datediff(d2, d1, units="hour"), 24*(365*4 + 1), "4 years (with leap year), in hours")
self.assertEqual(datediff(d2, d1, units="hours"), 24*(365*4 + 1), "4 years (with leap year), in hours")
self.assertEqual(datediff(d2, d1, units="day"), 365*4 + 1, "4 years (with leap year), in days")
self.assertEqual(datediff(d2, d1, units="days"), 365*4 + 1, "4 years (with leap year), in days")
self.assertEqual(datediff(d2, d1, units="week"), (365*4 + 1)/7., "4 years (with leap year), in weeks")
self.assertEqual(datediff(d2, d1, units="weeks"), (365*4 + 1)/7., "4 years (with leap year), in weeks")
def test_sign(self):
"""
Test the diff in both directions, validate they are the same and of opposite signs.
"""
d1 = datetime.datetime(2000, 1, 1, 0, 0, 0, 0)
d2 = datetime.datetime(2000, 1, 1, 0, 0, 0, 1) # test 4 years apart
self.assertTrue(datediff(d1,d2) < 0, "First date earlier than the second returns negative.")
self.assertTrue(datediff(d2,d1) > 0, "Second date earlier than the first returns positive.")
self.assertTrue(datediff(d2,d2) == 0, "First date equals the second returns 0.")
class VersionDiffTestCase(TestCase):
"""
Unit tests for version_diff
"""
def test_sign(self):
"""
Test the diff in both directions, validate they are the same and of opposite signs.
"""
v1 = "0.1"
v2 = "0.2"
self.assertTrue(version_diff(v1, v2) < 0, "First version earlier than the second returns negative.")
self.assertTrue(version_diff(v2, v1) > 0, "Second version earlier than the first returns positive.")
self.assertTrue(version_diff(v2, v2) == 0, "First version equals the second returns 0.")
def test_values(self):
"""
Test a few different values for the difference
"""
self.assertEqual(version_diff("0.1", "0.20"), -19, "abs(diff) > 10")
def test_levels(self):
"""
Test major, minor, and patch-level differences.
"""
self.assertEqual(version_diff("1", "2"), -1, "Major version diff (no minor)")
self.assertEqual(version_diff("1.0", "2.0"), -1, "Major version diff (matching minor)")
self.assertEqual(version_diff("0.1", "0.2"), -1, "Minor version diff (no patch)")
self.assertEqual(version_diff("0.1.0", "0.2.0"), -1, "Minor version diff (matching patch)")
self.assertEqual(version_diff("0.0.1", "0.0.2"), -1, "Patch version diff (no sub-patch)")
self.assertEqual(version_diff("0.0.1.0", "0.0.2.0"), -1, "Patch version diff (matching sub-patch)")
class EnsureDirTestCase(TestCase):
"""
Unit tests for ensure_dir function
"""
def setUp(self):
self.dirname = tempfile.mkdtemp()
self.filename = tempfile.mkstemp(dir=self.dirname)[1]
def tearDown(self):
if os.path.exists(self.dirname):
shutil.rmtree(self.dirname)
def assertDirExists(self, path):
self.assertTrue(os.path.isdir(path))
def assertNotExists(self, path):
self.assertFalse(os.path.exists(path))
def test_dir(self):
ensure_dir(self.dirname)
self.assertDirExists(self.dirname)
def test_new_dir(self):
newdir = os.path.join(self.dirname, 'newdir', 'newdir')
self.assertNotExists(newdir)
ensure_dir(newdir)
self.assertDirExists(newdir)
def test_new_dotted_dir(self):
newdir = os.path.join(self.dirname, 'new.dir')
self.assertNotExists(newdir)
ensure_dir(newdir)
self.assertDirExists(newdir)
def test_file(self):
with self.assertRaisesRegexp(OSError, 'Not a directory'):
ensure_dir(self.filename)
def test_new_dir_after_file(self):
newdir = os.path.join(self.filename, 'newdir')
with self.assertRaisesRegexp(OSError, 'Not a directory'):
ensure_dir(newdir)
self.assertNotExists(newdir)
if __name__ == '__main__':
unittest.main()