cookbook/tests.py

   1 """
   2 This file demonstrates writing tests using the unittest module. These will pass
   3 when you run "manage.py test".
   4
   5 Replace this with more appropriate tests for your application.
   6 """
   7
   8 from django.forms import ValidationError
   9 from django.test import TestCase
  10 from . import models
  11
  12
  13 class UnitTest(TestCase):
  14     def setUp(self):
  15         self.F = models.Unit(
  16             name=u'degree Farenheit', abbrev=u'\u00b0F', type=u'temperature',
  17             system=models.US, scale=1/1.8, offset=32)
  18         self.gal = models.Unit(
  19             name=u'gallon', abbrev=u'gal', type=u'volume',
  20             system=models.US, scale=3.78541, offset=0)
  21
  22     def test_conversion_from_si(self):
  23         "Test from-SI conversion"
  24         self.assertEqual(self.F.convert_from_si(0), 32)
  25         self.assertEqual(self.F.convert_from_si(100), 212)
  26         self.assertEqual(self.gal.convert_from_si(1), 0.26417217685798894)
  27
  28     def test_conversion_to_si(self):
  29         "Test to-SI conversion"
  30         self.assertEqual(self.F.convert_to_si(32), 0)
  31         self.assertEqual(self.F.convert_to_si(212), 100)
  32         self.assertEqual(self.gal.convert_to_si(1), 3.78541)
  33
  34     def test_formatting(self):
  35         "Test amount formatting"
  36         self.assertEqual(unicode(self.gal), u'gal')
  37         self.assertEqual(unicode(self.F), u'\u00b0F')
  38
  39
  40 class AmountTest(TestCase):
  41     def setUp(self):
  42         self.unit = models.Unit(
  43             name=u'gallon', abbrev=u'gal', type=u'volume',
  44             system=models.US, scale=3.78541, offset=0)
  45         self.amount = models.Amount()
  46
  47     def test_formatting(self):
  48         "Test amount formatting"
  49         for v,minv,maxv,unit,result in (
  50             (None, None, None, None, u'-'),
  51             (None, None, None, self.unit, u'- gal'),
  52             (2,    None, None, self.unit, u'2 gal'),
  53             (2,     1.5, None, self.unit, u'1.5-2 gal'),
  54             (2,    None,  2.5, self.unit, u'2-2.5 gal'),
  55             (2,     1.5,  2.5, self.unit, u'2 (1.5-2.5) gal'),
  56             (None,  1.5,  2.5, self.unit, u'1.5-2.5 gal'),
  57             ):
  58             self.amount.unit = unit
  59             self.amount.value = v
  60             self.amount.min_value = minv
  61             self.amount.max_value = maxv
  62             self.assertEqual(self.amount.format_amount(), result)
  63
  64     def test_invalid_formatting(self):
  65         "Test amount formatting which raises errors"
  66         for v,minv,maxv,unit,result in (
  67             (None,  1.5, None, self.unit, u'2 gal'),
  68             (None, None,  2.5, self.unit, u'2 gal'),
  69             ):
  70             self.amount.unit = unit
  71             self.amount.value = v
  72             self.amount.min_value = minv
  73             self.amount.max_value = maxv
  74             self.assertRaises(ValidationError, self.amount.format_amount)
  75
  76     def test_validation(self):
  77         "Test amount validation"
  78         for valid,v,minv,maxv,unit in (
  79             (True,  None, None, None, None),
  80             (True,  None, None, None, self.unit),
  81             (True,  2,    None, None, self.unit),
  82             (True,  2,     1.5, None, self.unit),
  83             (True,  2,    None,  2.5, self.unit),
  84             (True,  2,     1.5,  2.5, self.unit),
  85             (True,  None,  1.5,  2.5, self.unit),
  86             (False, None,  1.5, None, self.unit),
  87             (False, None, None,  2.5, self.unit),
  88             ):
  89             self.amount.unit = unit
  90             self.amount.value = v
  91             self.amount.min_value = minv
  92             self.amount.max_value = maxv
  93             if valid:
  94                 self.amount.validate_amount()
  95             else:
  96                 self.assertRaises(ValidationError, self.amount.format_amount)