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[1.2.X] Migrated expressions_regress doctests. Thanks to Stephan Jaekel.

Backport of r13950 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@13952 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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commit 51ded1500fe8466743cd47f901a71504ad545406 1 parent aec5f08
@freakboy3742 freakboy3742 authored
View
129 tests/regressiontests/expressions_regress/models.py
@@ -1,12 +1,7 @@
"""
-Spanning tests for all the operations that F() expressions can perform.
+Model for testing arithmetic expressions.
"""
-from django.conf import settings
-from django.db import models, DEFAULT_DB_ALIAS
-
-#
-# Model for testing arithmetic expressions.
-#
+from django.db import models
class Number(models.Model):
integer = models.IntegerField(db_column='the_integer')
@@ -15,123 +10,3 @@ class Number(models.Model):
def __unicode__(self):
return u'%i, %.3f' % (self.integer, self.float)
-
-__test__ = {'API_TESTS': """
->>> from django.db.models import F
-
->>> Number(integer=-1).save()
->>> Number(integer=42).save()
->>> Number(integer=1337).save()
-
-We can fill a value in all objects with an other value of the same object.
-
->>> Number.objects.update(float=F('integer'))
-3
->>> Number.objects.all()
-[<Number: -1, -1.000>, <Number: 42, 42.000>, <Number: 1337, 1337.000>]
-
-We can increment a value of all objects in a query set.
-
->>> Number.objects.filter(integer__gt=0).update(integer=F('integer') + 1)
-2
->>> Number.objects.all()
-[<Number: -1, -1.000>, <Number: 43, 42.000>, <Number: 1338, 1337.000>]
-
-We can filter for objects, where a value is not equals the value of an other field.
-
->>> Number.objects.exclude(float=F('integer'))
-[<Number: 43, 42.000>, <Number: 1338, 1337.000>]
-
-Complex expressions of different connection types are possible.
-
->>> n = Number.objects.create(integer=10, float=123.45)
-
->>> Number.objects.filter(pk=n.pk).update(float=F('integer') + F('float') * 2)
-1
->>> Number.objects.get(pk=n.pk)
-<Number: 10, 256.900>
-
-# All supported operators work as expected.
-
->>> n = Number.objects.create(integer=42, float=15.5)
-
-# Left hand operators
-
->>> _ = Number.objects.filter(pk=n.pk).update(integer=42, float=15.5)
->>> _ = Number.objects.filter(pk=n.pk).update(integer=F('integer') + 15, float=F('float') + 42.7)
->>> Number.objects.get(pk=n.pk) # LH Addition of floats and integers
-<Number: 57, 58.200>
-
->>> _ = Number.objects.filter(pk=n.pk).update(integer=42, float=15.5)
->>> _ = Number.objects.filter(pk=n.pk).update(integer=F('integer') - 15, float=F('float') - 42.7)
->>> Number.objects.get(pk=n.pk) # LH Subtraction of floats and integers
-<Number: 27, -27.200>
-
->>> _ = Number.objects.filter(pk=n.pk).update(integer=42, float=15.5)
->>> _ = Number.objects.filter(pk=n.pk).update(integer=F('integer') * 15, float=F('float') * 42.7)
->>> Number.objects.get(pk=n.pk) # Multiplication of floats and integers
-<Number: 630, 661.850>
-
->>> _ = Number.objects.filter(pk=n.pk).update(integer=42, float=15.5)
->>> _ = Number.objects.filter(pk=n.pk).update(integer=F('integer') / 2, float=F('float') / 42.7)
->>> Number.objects.get(pk=n.pk) # LH Division of floats and integers
-<Number: 21, 0.363>
-
->>> _ = Number.objects.filter(pk=n.pk).update(integer=42, float=15.5)
->>> _ = Number.objects.filter(pk=n.pk).update(integer=F('integer') % 20)
->>> Number.objects.get(pk=n.pk) # LH Modulo arithmetic on integers
-<Number: 2, 15.500>
-
->>> _ = Number.objects.filter(pk=n.pk).update(integer=42, float=15.5)
->>> _ = Number.objects.filter(pk=n.pk).update(integer=F('integer') & 56)
->>> Number.objects.get(pk=n.pk) # LH Bitwise ands on integers
-<Number: 40, 15.500>
-
-# Right hand operators
-
->>> _ = Number.objects.filter(pk=n.pk).update(integer=42, float=15.5)
->>> _ = Number.objects.filter(pk=n.pk).update(integer=15 + F('integer'), float=42.7 + F('float'))
->>> Number.objects.get(pk=n.pk) # RH Addition of floats and integers
-<Number: 57, 58.200>
-
->>> _ = Number.objects.filter(pk=n.pk).update(integer=42, float=15.5)
->>> _ = Number.objects.filter(pk=n.pk).update(integer=15 - F('integer'), float=42.7 - F('float'))
->>> Number.objects.get(pk=n.pk) # RH Subtraction of floats and integers
-<Number: -27, 27.200>
-
->>> _ = Number.objects.filter(pk=n.pk).update(integer=42, float=15.5)
->>> _ = Number.objects.filter(pk=n.pk).update(integer=15 * F('integer'), float=42.7 * F('float'))
->>> Number.objects.get(pk=n.pk) # RH Multiplication of floats and integers
-<Number: 630, 661.850>
-
->>> _ = Number.objects.filter(pk=n.pk).update(integer=42, float=15.5)
->>> _ = Number.objects.filter(pk=n.pk).update(integer=640 / F('integer'), float=42.7 / F('float'))
->>> Number.objects.get(pk=n.pk) # RH Division of floats and integers
-<Number: 15, 2.755>
-
->>> _ = Number.objects.filter(pk=n.pk).update(integer=42, float=15.5)
->>> _ = Number.objects.filter(pk=n.pk).update(integer=69 % F('integer'))
->>> Number.objects.get(pk=n.pk) # RH Modulo arithmetic on integers
-<Number: 27, 15.500>
-
->>> _ = Number.objects.filter(pk=n.pk).update(integer=42, float=15.5)
->>> _ = Number.objects.filter(pk=n.pk).update(integer=15 & F('integer'))
->>> Number.objects.get(pk=n.pk) # RH Bitwise ands on integers
-<Number: 10, 15.500>
-"""}
-
-# Oracle doesn't support the Bitwise OR operator.
-if settings.DATABASES[DEFAULT_DB_ALIAS]['ENGINE'] != 'django.db.backends.oracle':
- __test__['API_TESTS'] += """
-
->>> _ = Number.objects.filter(pk=n.pk).update(integer=42, float=15.5)
->>> _ = Number.objects.filter(pk=n.pk).update(integer=F('integer') | 48)
->>> Number.objects.get(pk=n.pk) # LH Bitwise or on integers
-<Number: 58, 15.500>
-
->>> _ = Number.objects.filter(pk=n.pk).update(integer=42, float=15.5)
->>> _ = Number.objects.filter(pk=n.pk).update(integer=15 | F('integer'))
->>> Number.objects.get(pk=n.pk) # RH Bitwise or on integers
-<Number: 47, 15.500>
-
-"""
View
195 tests/regressiontests/expressions_regress/tests.py
@@ -0,0 +1,195 @@
+"""
+Spanning tests for all the operations that F() expressions can perform.
+"""
+from django.test import TestCase, Approximate
+
+from django.conf import settings
+from django.db import models, DEFAULT_DB_ALIAS
+from django.db.models import F
+
+from regressiontests.expressions_regress.models import Number
+
+class ExpressionsRegressTests(TestCase):
+
+ def setUp(self):
+ Number(integer=-1).save()
+ Number(integer=42).save()
+ Number(integer=1337).save()
+ self.assertEqual(Number.objects.update(float=F('integer')), 3)
+
+ def test_fill_with_value_from_same_object(self):
+ """
+ We can fill a value in all objects with an other value of the
+ same object.
+ """
+ self.assertQuerysetEqual(
+ Number.objects.all(),
+ [
+ '<Number: -1, -1.000>',
+ '<Number: 42, 42.000>',
+ '<Number: 1337, 1337.000>'
+ ]
+ )
+
+ def test_increment_value(self):
+ """
+ We can increment a value of all objects in a query set.
+ """
+ self.assertEqual(
+ Number.objects.filter(integer__gt=0)
+ .update(integer=F('integer') + 1),
+ 2)
+
+ self.assertQuerysetEqual(
+ Number.objects.all(),
+ [
+ '<Number: -1, -1.000>',
+ '<Number: 43, 42.000>',
+ '<Number: 1338, 1337.000>'
+ ]
+ )
+
+ def test_filter_not_equals_other_field(self):
+ """
+ We can filter for objects, where a value is not equals the value
+ of an other field.
+ """
+ self.assertEqual(
+ Number.objects.filter(integer__gt=0)
+ .update(integer=F('integer') + 1),
+ 2)
+ self.assertQuerysetEqual(
+ Number.objects.exclude(float=F('integer')),
+ [
+ '<Number: 43, 42.000>',
+ '<Number: 1338, 1337.000>'
+ ]
+ )
+
+ def test_complex_expressions(self):
+ """
+ Complex expressions of different connection types are possible.
+ """
+ n = Number.objects.create(integer=10, float=123.45)
+ self.assertEqual(Number.objects.filter(pk=n.pk)
+ .update(float=F('integer') + F('float') * 2),
+ 1)
+
+ self.assertEqual(Number.objects.get(pk=n.pk).integer, 10)
+ self.assertEqual(Number.objects.get(pk=n.pk).float, Approximate(256.900, places=3))
+
+class ExpressionOperatorTests(TestCase):
+ def setUp(self):
+ self.n = Number.objects.create(integer=42, float=15.5)
+
+ def test_lefthand_addition(self):
+ # LH Addition of floats and integers
+ Number.objects.filter(pk=self.n.pk).update(
+ integer=F('integer') + 15,
+ float=F('float') + 42.7
+ )
+
+ self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 57)
+ self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(58.200, places=3))
+
+ def test_lefthand_subtraction(self):
+ # LH Subtraction of floats and integers
+ Number.objects.filter(pk=self.n.pk).update(integer=F('integer') - 15,
+ float=F('float') - 42.7)
+
+ self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 27)
+ self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(-27.200, places=3))
+
+ def test_lefthand_multiplication(self):
+ # Multiplication of floats and integers
+ Number.objects.filter(pk=self.n.pk).update(integer=F('integer') * 15,
+ float=F('float') * 42.7)
+
+ self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 630)
+ self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(661.850, places=3))
+
+ def test_lefthand_division(self):
+ # LH Division of floats and integers
+ Number.objects.filter(pk=self.n.pk).update(integer=F('integer') / 2,
+ float=F('float') / 42.7)
+
+ self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 21)
+ self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(0.363, places=3))
+
+ def test_lefthand_modulo(self):
+ # LH Modulo arithmetic on integers
+ Number.objects.filter(pk=self.n.pk).update(integer=F('integer') % 20)
+
+ self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 2)
+ self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(15.500, places=3))
+
+ def test_lefthand_bitwise_and(self):
+ # LH Bitwise ands on integers
+ Number.objects.filter(pk=self.n.pk).update(integer=F('integer') & 56)
+
+ self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 40)
+ self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(15.500, places=3))
+
+ if settings.DATABASES[DEFAULT_DB_ALIAS]['ENGINE'] != 'django.db.backends.oracle':
+ def test_lefthand_bitwise_or(self):
+ # LH Bitwise or on integers
+ Number.objects.filter(pk=self.n.pk).update(integer=F('integer') | 48)
+
+ self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 58)
+ self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(15.500, places=3))
+
+ def test_right_hand_addition(self):
+ # Right hand operators
+ Number.objects.filter(pk=self.n.pk).update(integer=15 + F('integer'),
+ float=42.7 + F('float'))
+
+ # RH Addition of floats and integers
+ self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 57)
+ self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(58.200, places=3))
+
+ def test_right_hand_subtraction(self):
+ Number.objects.filter(pk=self.n.pk).update(integer=15 - F('integer'),
+ float=42.7 - F('float'))
+
+ # RH Subtraction of floats and integers
+ self.assertEqual(Number.objects.get(pk=self.n.pk).integer, -27)
+ self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(27.200, places=3))
+
+ def test_right_hand_multiplication(self):
+ # RH Multiplication of floats and integers
+ Number.objects.filter(pk=self.n.pk).update(integer=15 * F('integer'),
+ float=42.7 * F('float'))
+
+ self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 630)
+ self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(661.850, places=3))
+
+ def test_right_hand_division(self):
+ # RH Division of floats and integers
+ Number.objects.filter(pk=self.n.pk).update(integer=640 / F('integer'),
+ float=42.7 / F('float'))
+
+ self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 15)
+ self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(2.755, places=3))
+
+ def test_right_hand_modulo(self):
+ # RH Modulo arithmetic on integers
+ Number.objects.filter(pk=self.n.pk).update(integer=69 % F('integer'))
+
+ self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 27)
+ self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(15.500, places=3))
+
+ def test_right_hand_bitwise_and(self):
+ # RH Bitwise ands on integers
+ Number.objects.filter(pk=self.n.pk).update(integer=15 & F('integer'))
+
+ self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 10)
+ self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(15.500, places=3))
+
+ if settings.DATABASES[DEFAULT_DB_ALIAS]['ENGINE'] != 'django.db.backends.oracle':
+ def test_right_hand_bitwise_or(self):
+ # RH Bitwise or on integers
+ Number.objects.filter(pk=self.n.pk).update(integer=15 | F('integer'))
+
+ self.assertEqual(Number.objects.get(pk=self.n.pk).integer, 47)
+ self.assertEqual(Number.objects.get(pk=self.n.pk).float, Approximate(15.500, places=3))
+
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