mirror of
https://github.com/django/django.git
synced 2024-12-25 02:26:12 +00:00
389 lines
16 KiB
Python
389 lines
16 KiB
Python
"""
|
|
Spanning tests for all the operations that F() expressions can perform.
|
|
"""
|
|
from __future__ import unicode_literals
|
|
|
|
import datetime
|
|
|
|
from django.db import connection
|
|
from django.db.models import F
|
|
from django.test import TestCase, Approximate, skipUnlessDBFeature
|
|
|
|
from .models import Number, Experiment
|
|
|
|
|
|
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>'
|
|
],
|
|
ordered=False
|
|
)
|
|
|
|
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>'
|
|
],
|
|
ordered=False
|
|
)
|
|
|
|
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>'
|
|
],
|
|
ordered=False
|
|
)
|
|
|
|
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').bitand(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))
|
|
|
|
@skipUnlessDBFeature('supports_bitwise_or')
|
|
def test_lefthand_bitwise_or(self):
|
|
# LH Bitwise or on integers
|
|
Number.objects.filter(pk=self.n.pk).update(integer=F('integer').bitor(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))
|
|
|
|
|
|
class FTimeDeltaTests(TestCase):
|
|
|
|
def setUp(self):
|
|
sday = datetime.date(2010, 6, 25)
|
|
stime = datetime.datetime(2010, 6, 25, 12, 15, 30, 747000)
|
|
midnight = datetime.time(0)
|
|
|
|
delta0 = datetime.timedelta(0)
|
|
delta1 = datetime.timedelta(microseconds=253000)
|
|
delta2 = datetime.timedelta(seconds=44)
|
|
delta3 = datetime.timedelta(hours=21, minutes=8)
|
|
delta4 = datetime.timedelta(days=10)
|
|
|
|
# Test data is set so that deltas and delays will be
|
|
# strictly increasing.
|
|
self.deltas = []
|
|
self.delays = []
|
|
self.days_long = []
|
|
|
|
# e0: started same day as assigned, zero duration
|
|
end = stime+delta0
|
|
e0 = Experiment.objects.create(name='e0', assigned=sday, start=stime,
|
|
end=end, completed=end.date())
|
|
self.deltas.append(delta0)
|
|
self.delays.append(e0.start-
|
|
datetime.datetime.combine(e0.assigned, midnight))
|
|
self.days_long.append(e0.completed-e0.assigned)
|
|
|
|
# e1: started one day after assigned, tiny duration, data
|
|
# set so that end time has no fractional seconds, which
|
|
# tests an edge case on sqlite. This Experiment is only
|
|
# included in the test data when the DB supports microsecond
|
|
# precision.
|
|
if connection.features.supports_microsecond_precision:
|
|
delay = datetime.timedelta(1)
|
|
end = stime + delay + delta1
|
|
e1 = Experiment.objects.create(name='e1', assigned=sday,
|
|
start=stime+delay, end=end, completed=end.date())
|
|
self.deltas.append(delta1)
|
|
self.delays.append(e1.start-
|
|
datetime.datetime.combine(e1.assigned, midnight))
|
|
self.days_long.append(e1.completed-e1.assigned)
|
|
|
|
# e2: started three days after assigned, small duration
|
|
end = stime+delta2
|
|
e2 = Experiment.objects.create(name='e2',
|
|
assigned=sday-datetime.timedelta(3), start=stime, end=end,
|
|
completed=end.date())
|
|
self.deltas.append(delta2)
|
|
self.delays.append(e2.start-
|
|
datetime.datetime.combine(e2.assigned, midnight))
|
|
self.days_long.append(e2.completed-e2.assigned)
|
|
|
|
# e3: started four days after assigned, medium duration
|
|
delay = datetime.timedelta(4)
|
|
end = stime + delay + delta3
|
|
e3 = Experiment.objects.create(name='e3',
|
|
assigned=sday, start=stime+delay, end=end, completed=end.date())
|
|
self.deltas.append(delta3)
|
|
self.delays.append(e3.start-
|
|
datetime.datetime.combine(e3.assigned, midnight))
|
|
self.days_long.append(e3.completed-e3.assigned)
|
|
|
|
# e4: started 10 days after assignment, long duration
|
|
end = stime + delta4
|
|
e4 = Experiment.objects.create(name='e4',
|
|
assigned=sday-datetime.timedelta(10), start=stime, end=end,
|
|
completed=end.date())
|
|
self.deltas.append(delta4)
|
|
self.delays.append(e4.start-
|
|
datetime.datetime.combine(e4.assigned, midnight))
|
|
self.days_long.append(e4.completed-e4.assigned)
|
|
self.expnames = [e.name for e in Experiment.objects.all()]
|
|
|
|
def test_delta_add(self):
|
|
for i in range(len(self.deltas)):
|
|
delta = self.deltas[i]
|
|
test_set = [e.name for e in
|
|
Experiment.objects.filter(end__lt=F('start')+delta)]
|
|
self.assertEqual(test_set, self.expnames[:i])
|
|
|
|
test_set = [e.name for e in
|
|
Experiment.objects.filter(end__lte=F('start')+delta)]
|
|
self.assertEqual(test_set, self.expnames[:i+1])
|
|
|
|
def test_delta_subtract(self):
|
|
for i in range(len(self.deltas)):
|
|
delta = self.deltas[i]
|
|
test_set = [e.name for e in
|
|
Experiment.objects.filter(start__gt=F('end')-delta)]
|
|
self.assertEqual(test_set, self.expnames[:i])
|
|
|
|
test_set = [e.name for e in
|
|
Experiment.objects.filter(start__gte=F('end')-delta)]
|
|
self.assertEqual(test_set, self.expnames[:i+1])
|
|
|
|
def test_exclude(self):
|
|
for i in range(len(self.deltas)):
|
|
delta = self.deltas[i]
|
|
test_set = [e.name for e in
|
|
Experiment.objects.exclude(end__lt=F('start')+delta)]
|
|
self.assertEqual(test_set, self.expnames[i:])
|
|
|
|
test_set = [e.name for e in
|
|
Experiment.objects.exclude(end__lte=F('start')+delta)]
|
|
self.assertEqual(test_set, self.expnames[i+1:])
|
|
|
|
def test_date_comparison(self):
|
|
for i in range(len(self.days_long)):
|
|
days = self.days_long[i]
|
|
test_set = [e.name for e in
|
|
Experiment.objects.filter(completed__lt=F('assigned')+days)]
|
|
self.assertEqual(test_set, self.expnames[:i])
|
|
|
|
test_set = [e.name for e in
|
|
Experiment.objects.filter(completed__lte=F('assigned')+days)]
|
|
self.assertEqual(test_set, self.expnames[:i+1])
|
|
|
|
@skipUnlessDBFeature("supports_mixed_date_datetime_comparisons")
|
|
def test_mixed_comparisons1(self):
|
|
for i in range(len(self.delays)):
|
|
delay = self.delays[i]
|
|
if not connection.features.supports_microsecond_precision:
|
|
delay = datetime.timedelta(delay.days, delay.seconds)
|
|
test_set = [e.name for e in
|
|
Experiment.objects.filter(assigned__gt=F('start')-delay)]
|
|
self.assertEqual(test_set, self.expnames[:i])
|
|
|
|
test_set = [e.name for e in
|
|
Experiment.objects.filter(assigned__gte=F('start')-delay)]
|
|
self.assertEqual(test_set, self.expnames[:i+1])
|
|
|
|
def test_mixed_comparisons2(self):
|
|
delays = [datetime.timedelta(delay.days) for delay in self.delays]
|
|
for i in range(len(delays)):
|
|
delay = delays[i]
|
|
test_set = [e.name for e in
|
|
Experiment.objects.filter(start__lt=F('assigned')+delay)]
|
|
self.assertEqual(test_set, self.expnames[:i])
|
|
|
|
test_set = [e.name for e in
|
|
Experiment.objects.filter(start__lte=F('assigned')+delay+
|
|
datetime.timedelta(1))]
|
|
self.assertEqual(test_set, self.expnames[:i+1])
|
|
|
|
def test_delta_update(self):
|
|
for i in range(len(self.deltas)):
|
|
delta = self.deltas[i]
|
|
exps = Experiment.objects.all()
|
|
expected_durations = [e.duration() for e in exps]
|
|
expected_starts = [e.start+delta for e in exps]
|
|
expected_ends = [e.end+delta for e in exps]
|
|
|
|
Experiment.objects.update(start=F('start')+delta, end=F('end')+delta)
|
|
exps = Experiment.objects.all()
|
|
new_starts = [e.start for e in exps]
|
|
new_ends = [e.end for e in exps]
|
|
new_durations = [e.duration() for e in exps]
|
|
self.assertEqual(expected_starts, new_starts)
|
|
self.assertEqual(expected_ends, new_ends)
|
|
self.assertEqual(expected_durations, new_durations)
|
|
|
|
def test_delta_invalid_op_mult(self):
|
|
raised = False
|
|
try:
|
|
r = repr(Experiment.objects.filter(end__lt=F('start')*self.deltas[0]))
|
|
except TypeError:
|
|
raised = True
|
|
self.assertTrue(raised, "TypeError not raised on attempt to multiply datetime by timedelta.")
|
|
|
|
def test_delta_invalid_op_div(self):
|
|
raised = False
|
|
try:
|
|
r = repr(Experiment.objects.filter(end__lt=F('start')/self.deltas[0]))
|
|
except TypeError:
|
|
raised = True
|
|
self.assertTrue(raised, "TypeError not raised on attempt to divide datetime by timedelta.")
|
|
|
|
def test_delta_invalid_op_mod(self):
|
|
raised = False
|
|
try:
|
|
r = repr(Experiment.objects.filter(end__lt=F('start')%self.deltas[0]))
|
|
except TypeError:
|
|
raised = True
|
|
self.assertTrue(raised, "TypeError not raised on attempt to modulo divide datetime by timedelta.")
|
|
|
|
def test_delta_invalid_op_and(self):
|
|
raised = False
|
|
try:
|
|
r = repr(Experiment.objects.filter(end__lt=F('start').bitand(self.deltas[0])))
|
|
except TypeError:
|
|
raised = True
|
|
self.assertTrue(raised, "TypeError not raised on attempt to binary and a datetime with a timedelta.")
|
|
|
|
def test_delta_invalid_op_or(self):
|
|
raised = False
|
|
try:
|
|
r = repr(Experiment.objects.filter(end__lt=F('start').bitor(self.deltas[0])))
|
|
except TypeError:
|
|
raised = True
|
|
self.assertTrue(raised, "TypeError not raised on attempt to binary or a datetime with a timedelta.")
|