django/tests/postgres_tests/test_array.py

861 lines
32 KiB
Python

import decimal
import json
import unittest
import uuid
from django import forms
from django.core import exceptions, serializers, validators
from django.core.exceptions import FieldError
from django.core.management import call_command
from django.db import IntegrityError, connection, models
from django.test import TransactionTestCase, modify_settings, override_settings
from django.test.utils import isolate_apps
from django.utils import timezone
from . import PostgreSQLTestCase, PostgreSQLWidgetTestCase
from .models import (
ArrayFieldSubclass, CharArrayModel, DateTimeArrayModel, IntegerArrayModel,
NestedIntegerArrayModel, NullableIntegerArrayModel, OtherTypesArrayModel,
PostgreSQLModel, Tag,
)
try:
from django.contrib.postgres.fields import ArrayField
from django.contrib.postgres.forms import (
SimpleArrayField, SplitArrayField, SplitArrayWidget,
)
except ImportError:
pass
class TestSaveLoad(PostgreSQLTestCase):
def test_integer(self):
instance = IntegerArrayModel(field=[1, 2, 3])
instance.save()
loaded = IntegerArrayModel.objects.get()
self.assertEqual(instance.field, loaded.field)
def test_char(self):
instance = CharArrayModel(field=['hello', 'goodbye'])
instance.save()
loaded = CharArrayModel.objects.get()
self.assertEqual(instance.field, loaded.field)
def test_dates(self):
instance = DateTimeArrayModel(
datetimes=[timezone.now()],
dates=[timezone.now().date()],
times=[timezone.now().time()],
)
instance.save()
loaded = DateTimeArrayModel.objects.get()
self.assertEqual(instance.datetimes, loaded.datetimes)
self.assertEqual(instance.dates, loaded.dates)
self.assertEqual(instance.times, loaded.times)
def test_tuples(self):
instance = IntegerArrayModel(field=(1,))
instance.save()
loaded = IntegerArrayModel.objects.get()
self.assertSequenceEqual(instance.field, loaded.field)
def test_integers_passed_as_strings(self):
# This checks that get_prep_value is deferred properly
instance = IntegerArrayModel(field=['1'])
instance.save()
loaded = IntegerArrayModel.objects.get()
self.assertEqual(loaded.field, [1])
def test_default_null(self):
instance = NullableIntegerArrayModel()
instance.save()
loaded = NullableIntegerArrayModel.objects.get(pk=instance.pk)
self.assertIsNone(loaded.field)
self.assertEqual(instance.field, loaded.field)
def test_null_handling(self):
instance = NullableIntegerArrayModel(field=None)
instance.save()
loaded = NullableIntegerArrayModel.objects.get()
self.assertEqual(instance.field, loaded.field)
instance = IntegerArrayModel(field=None)
with self.assertRaises(IntegrityError):
instance.save()
def test_nested(self):
instance = NestedIntegerArrayModel(field=[[1, 2], [3, 4]])
instance.save()
loaded = NestedIntegerArrayModel.objects.get()
self.assertEqual(instance.field, loaded.field)
def test_other_array_types(self):
instance = OtherTypesArrayModel(
ips=['192.168.0.1', '::1'],
uuids=[uuid.uuid4()],
decimals=[decimal.Decimal(1.25), 1.75],
tags=[Tag(1), Tag(2), Tag(3)],
)
instance.save()
loaded = OtherTypesArrayModel.objects.get()
self.assertEqual(instance.ips, loaded.ips)
self.assertEqual(instance.uuids, loaded.uuids)
self.assertEqual(instance.decimals, loaded.decimals)
self.assertEqual(instance.tags, loaded.tags)
def test_null_from_db_value_handling(self):
instance = OtherTypesArrayModel.objects.create(
ips=['192.168.0.1', '::1'],
uuids=[uuid.uuid4()],
decimals=[decimal.Decimal(1.25), 1.75],
tags=None,
)
instance.refresh_from_db()
self.assertIsNone(instance.tags)
def test_model_set_on_base_field(self):
instance = IntegerArrayModel()
field = instance._meta.get_field('field')
self.assertEqual(field.model, IntegerArrayModel)
self.assertEqual(field.base_field.model, IntegerArrayModel)
class TestQuerying(PostgreSQLTestCase):
def setUp(self):
self.objs = [
NullableIntegerArrayModel.objects.create(field=[1]),
NullableIntegerArrayModel.objects.create(field=[2]),
NullableIntegerArrayModel.objects.create(field=[2, 3]),
NullableIntegerArrayModel.objects.create(field=[20, 30, 40]),
NullableIntegerArrayModel.objects.create(field=None),
]
def test_exact(self):
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(field__exact=[1]),
self.objs[:1]
)
def test_exact_charfield(self):
instance = CharArrayModel.objects.create(field=['text'])
self.assertSequenceEqual(
CharArrayModel.objects.filter(field=['text']),
[instance]
)
def test_exact_nested(self):
instance = NestedIntegerArrayModel.objects.create(field=[[1, 2], [3, 4]])
self.assertSequenceEqual(
NestedIntegerArrayModel.objects.filter(field=[[1, 2], [3, 4]]),
[instance]
)
def test_isnull(self):
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(field__isnull=True),
self.objs[-1:]
)
def test_gt(self):
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(field__gt=[0]),
self.objs[:4]
)
def test_lt(self):
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(field__lt=[2]),
self.objs[:1]
)
def test_in(self):
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(field__in=[[1], [2]]),
self.objs[:2]
)
@unittest.expectedFailure
def test_in_including_F_object(self):
# This test asserts that Array objects passed to filters can be
# constructed to contain F objects. This currently doesn't work as the
# psycopg2 mogrify method that generates the ARRAY() syntax is
# expecting literals, not column references (#27095).
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(field__in=[[models.F('id')]]),
self.objs[:2]
)
def test_in_as_F_object(self):
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(field__in=[models.F('field')]),
self.objs[:4]
)
def test_contained_by(self):
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(field__contained_by=[1, 2]),
self.objs[:2]
)
@unittest.expectedFailure
def test_contained_by_including_F_object(self):
# This test asserts that Array objects passed to filters can be
# constructed to contain F objects. This currently doesn't work as the
# psycopg2 mogrify method that generates the ARRAY() syntax is
# expecting literals, not column references (#27095).
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(field__contained_by=[models.F('id'), 2]),
self.objs[:2]
)
def test_contains(self):
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(field__contains=[2]),
self.objs[1:3]
)
def test_icontains(self):
# Using the __icontains lookup with ArrayField is inefficient.
instance = CharArrayModel.objects.create(field=['FoO'])
self.assertSequenceEqual(
CharArrayModel.objects.filter(field__icontains='foo'),
[instance]
)
def test_contains_charfield(self):
# Regression for #22907
self.assertSequenceEqual(
CharArrayModel.objects.filter(field__contains=['text']),
[]
)
def test_contained_by_charfield(self):
self.assertSequenceEqual(
CharArrayModel.objects.filter(field__contained_by=['text']),
[]
)
def test_overlap_charfield(self):
self.assertSequenceEqual(
CharArrayModel.objects.filter(field__overlap=['text']),
[]
)
def test_index(self):
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(field__0=2),
self.objs[1:3]
)
def test_index_chained(self):
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(field__0__lt=3),
self.objs[0:3]
)
def test_index_nested(self):
instance = NestedIntegerArrayModel.objects.create(field=[[1, 2], [3, 4]])
self.assertSequenceEqual(
NestedIntegerArrayModel.objects.filter(field__0__0=1),
[instance]
)
@unittest.expectedFailure
def test_index_used_on_nested_data(self):
instance = NestedIntegerArrayModel.objects.create(field=[[1, 2], [3, 4]])
self.assertSequenceEqual(
NestedIntegerArrayModel.objects.filter(field__0=[1, 2]),
[instance]
)
def test_overlap(self):
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(field__overlap=[1, 2]),
self.objs[0:3]
)
def test_len(self):
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(field__len__lte=2),
self.objs[0:3]
)
def test_len_empty_array(self):
obj = NullableIntegerArrayModel.objects.create(field=[])
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(field__len=0),
[obj]
)
def test_slice(self):
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(field__0_1=[2]),
self.objs[1:3]
)
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(field__0_2=[2, 3]),
self.objs[2:3]
)
@unittest.expectedFailure
def test_slice_nested(self):
instance = NestedIntegerArrayModel.objects.create(field=[[1, 2], [3, 4]])
self.assertSequenceEqual(
NestedIntegerArrayModel.objects.filter(field__0__0_1=[1]),
[instance]
)
def test_usage_in_subquery(self):
self.assertSequenceEqual(
NullableIntegerArrayModel.objects.filter(
id__in=NullableIntegerArrayModel.objects.filter(field__len=3)
),
[self.objs[3]]
)
def test_unsupported_lookup(self):
msg = "Unsupported lookup '0_bar' for ArrayField or join on the field not permitted."
with self.assertRaisesMessage(FieldError, msg):
list(NullableIntegerArrayModel.objects.filter(field__0_bar=[2]))
msg = "Unsupported lookup '0bar' for ArrayField or join on the field not permitted."
with self.assertRaisesMessage(FieldError, msg):
list(NullableIntegerArrayModel.objects.filter(field__0bar=[2]))
class TestDateTimeExactQuerying(PostgreSQLTestCase):
def setUp(self):
now = timezone.now()
self.datetimes = [now]
self.dates = [now.date()]
self.times = [now.time()]
self.objs = [
DateTimeArrayModel.objects.create(
datetimes=self.datetimes,
dates=self.dates,
times=self.times,
)
]
def test_exact_datetimes(self):
self.assertSequenceEqual(
DateTimeArrayModel.objects.filter(datetimes=self.datetimes),
self.objs
)
def test_exact_dates(self):
self.assertSequenceEqual(
DateTimeArrayModel.objects.filter(dates=self.dates),
self.objs
)
def test_exact_times(self):
self.assertSequenceEqual(
DateTimeArrayModel.objects.filter(times=self.times),
self.objs
)
class TestOtherTypesExactQuerying(PostgreSQLTestCase):
def setUp(self):
self.ips = ['192.168.0.1', '::1']
self.uuids = [uuid.uuid4()]
self.decimals = [decimal.Decimal(1.25), 1.75]
self.tags = [Tag(1), Tag(2), Tag(3)]
self.objs = [
OtherTypesArrayModel.objects.create(
ips=self.ips,
uuids=self.uuids,
decimals=self.decimals,
tags=self.tags,
)
]
def test_exact_ip_addresses(self):
self.assertSequenceEqual(
OtherTypesArrayModel.objects.filter(ips=self.ips),
self.objs
)
def test_exact_uuids(self):
self.assertSequenceEqual(
OtherTypesArrayModel.objects.filter(uuids=self.uuids),
self.objs
)
def test_exact_decimals(self):
self.assertSequenceEqual(
OtherTypesArrayModel.objects.filter(decimals=self.decimals),
self.objs
)
def test_exact_tags(self):
self.assertSequenceEqual(
OtherTypesArrayModel.objects.filter(tags=self.tags),
self.objs
)
@isolate_apps('postgres_tests')
class TestChecks(PostgreSQLTestCase):
def test_field_checks(self):
class MyModel(PostgreSQLModel):
field = ArrayField(models.CharField())
model = MyModel()
errors = model.check()
self.assertEqual(len(errors), 1)
# The inner CharField is missing a max_length.
self.assertEqual(errors[0].id, 'postgres.E001')
self.assertIn('max_length', errors[0].msg)
def test_invalid_base_fields(self):
class MyModel(PostgreSQLModel):
field = ArrayField(models.ManyToManyField('postgres_tests.IntegerArrayModel'))
model = MyModel()
errors = model.check()
self.assertEqual(len(errors), 1)
self.assertEqual(errors[0].id, 'postgres.E002')
def test_nested_field_checks(self):
"""
Nested ArrayFields are permitted.
"""
class MyModel(PostgreSQLModel):
field = ArrayField(ArrayField(models.CharField()))
model = MyModel()
errors = model.check()
self.assertEqual(len(errors), 1)
# The inner CharField is missing a max_length.
self.assertEqual(errors[0].id, 'postgres.E001')
self.assertIn('max_length', errors[0].msg)
@unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific tests")
class TestMigrations(TransactionTestCase):
available_apps = ['postgres_tests']
def test_deconstruct(self):
field = ArrayField(models.IntegerField())
name, path, args, kwargs = field.deconstruct()
new = ArrayField(*args, **kwargs)
self.assertEqual(type(new.base_field), type(field.base_field))
self.assertIsNot(new.base_field, field.base_field)
def test_deconstruct_with_size(self):
field = ArrayField(models.IntegerField(), size=3)
name, path, args, kwargs = field.deconstruct()
new = ArrayField(*args, **kwargs)
self.assertEqual(new.size, field.size)
def test_deconstruct_args(self):
field = ArrayField(models.CharField(max_length=20))
name, path, args, kwargs = field.deconstruct()
new = ArrayField(*args, **kwargs)
self.assertEqual(new.base_field.max_length, field.base_field.max_length)
def test_subclass_deconstruct(self):
field = ArrayField(models.IntegerField())
name, path, args, kwargs = field.deconstruct()
self.assertEqual(path, 'django.contrib.postgres.fields.ArrayField')
field = ArrayFieldSubclass()
name, path, args, kwargs = field.deconstruct()
self.assertEqual(path, 'postgres_tests.models.ArrayFieldSubclass')
@override_settings(MIGRATION_MODULES={
"postgres_tests": "postgres_tests.array_default_migrations",
})
def test_adding_field_with_default(self):
# See #22962
table_name = 'postgres_tests_integerarraydefaultmodel'
with connection.cursor() as cursor:
self.assertNotIn(table_name, connection.introspection.table_names(cursor))
call_command('migrate', 'postgres_tests', verbosity=0)
with connection.cursor() as cursor:
self.assertIn(table_name, connection.introspection.table_names(cursor))
call_command('migrate', 'postgres_tests', 'zero', verbosity=0)
with connection.cursor() as cursor:
self.assertNotIn(table_name, connection.introspection.table_names(cursor))
@override_settings(MIGRATION_MODULES={
"postgres_tests": "postgres_tests.array_index_migrations",
})
def test_adding_arrayfield_with_index(self):
"""
ArrayField shouldn't have varchar_patterns_ops or text_patterns_ops indexes.
"""
table_name = 'postgres_tests_chartextarrayindexmodel'
call_command('migrate', 'postgres_tests', verbosity=0)
with connection.cursor() as cursor:
like_constraint_columns_list = [
v['columns']
for k, v in list(connection.introspection.get_constraints(cursor, table_name).items())
if k.endswith('_like')
]
# Only the CharField should have a LIKE index.
self.assertEqual(like_constraint_columns_list, [['char2']])
# All fields should have regular indexes.
with connection.cursor() as cursor:
indexes = [
c['columns'][0]
for c in connection.introspection.get_constraints(cursor, table_name).values()
if c['index'] and len(c['columns']) == 1
]
self.assertIn('char', indexes)
self.assertIn('char2', indexes)
self.assertIn('text', indexes)
call_command('migrate', 'postgres_tests', 'zero', verbosity=0)
with connection.cursor() as cursor:
self.assertNotIn(table_name, connection.introspection.table_names(cursor))
class TestSerialization(PostgreSQLTestCase):
test_data = (
'[{"fields": {"field": "[\\"1\\", \\"2\\", null]"}, "model": "postgres_tests.integerarraymodel", "pk": null}]'
)
def test_dumping(self):
instance = IntegerArrayModel(field=[1, 2, None])
data = serializers.serialize('json', [instance])
self.assertEqual(json.loads(data), json.loads(self.test_data))
def test_loading(self):
instance = list(serializers.deserialize('json', self.test_data))[0].object
self.assertEqual(instance.field, [1, 2, None])
class TestValidation(PostgreSQLTestCase):
def test_unbounded(self):
field = ArrayField(models.IntegerField())
with self.assertRaises(exceptions.ValidationError) as cm:
field.clean([1, None], None)
self.assertEqual(cm.exception.code, 'item_invalid')
self.assertEqual(
cm.exception.message % cm.exception.params,
'Item 1 in the array did not validate: This field cannot be null.'
)
def test_blank_true(self):
field = ArrayField(models.IntegerField(blank=True, null=True))
# This should not raise a validation error
field.clean([1, None], None)
def test_with_size(self):
field = ArrayField(models.IntegerField(), size=3)
field.clean([1, 2, 3], None)
with self.assertRaises(exceptions.ValidationError) as cm:
field.clean([1, 2, 3, 4], None)
self.assertEqual(cm.exception.messages[0], 'List contains 4 items, it should contain no more than 3.')
def test_nested_array_mismatch(self):
field = ArrayField(ArrayField(models.IntegerField()))
field.clean([[1, 2], [3, 4]], None)
with self.assertRaises(exceptions.ValidationError) as cm:
field.clean([[1, 2], [3, 4, 5]], None)
self.assertEqual(cm.exception.code, 'nested_array_mismatch')
self.assertEqual(cm.exception.messages[0], 'Nested arrays must have the same length.')
def test_with_base_field_error_params(self):
field = ArrayField(models.CharField(max_length=2))
with self.assertRaises(exceptions.ValidationError) as cm:
field.clean(['abc'], None)
self.assertEqual(len(cm.exception.error_list), 1)
exception = cm.exception.error_list[0]
self.assertEqual(
exception.message,
'Item 0 in the array did not validate: Ensure this value has at most 2 characters (it has 3).'
)
self.assertEqual(exception.code, 'item_invalid')
self.assertEqual(exception.params, {'nth': 0, 'value': 'abc', 'limit_value': 2, 'show_value': 3})
def test_with_validators(self):
field = ArrayField(models.IntegerField(validators=[validators.MinValueValidator(1)]))
field.clean([1, 2], None)
with self.assertRaises(exceptions.ValidationError) as cm:
field.clean([0], None)
self.assertEqual(len(cm.exception.error_list), 1)
exception = cm.exception.error_list[0]
self.assertEqual(
exception.message,
'Item 0 in the array did not validate: Ensure this value is greater than or equal to 1.'
)
self.assertEqual(exception.code, 'item_invalid')
self.assertEqual(exception.params, {'nth': 0, 'value': 0, 'limit_value': 1, 'show_value': 0})
class TestSimpleFormField(PostgreSQLTestCase):
def test_valid(self):
field = SimpleArrayField(forms.CharField())
value = field.clean('a,b,c')
self.assertEqual(value, ['a', 'b', 'c'])
def test_to_python_fail(self):
field = SimpleArrayField(forms.IntegerField())
with self.assertRaises(exceptions.ValidationError) as cm:
field.clean('a,b,9')
self.assertEqual(cm.exception.messages[0], 'Item 0 in the array did not validate: Enter a whole number.')
def test_validate_fail(self):
field = SimpleArrayField(forms.CharField(required=True))
with self.assertRaises(exceptions.ValidationError) as cm:
field.clean('a,b,')
self.assertEqual(cm.exception.messages[0], 'Item 2 in the array did not validate: This field is required.')
def test_validate_fail_base_field_error_params(self):
field = SimpleArrayField(forms.CharField(max_length=2))
with self.assertRaises(exceptions.ValidationError) as cm:
field.clean('abc,c,defg')
errors = cm.exception.error_list
self.assertEqual(len(errors), 2)
first_error = errors[0]
self.assertEqual(
first_error.message,
'Item 0 in the array did not validate: Ensure this value has at most 2 characters (it has 3).'
)
self.assertEqual(first_error.code, 'item_invalid')
self.assertEqual(first_error.params, {'nth': 0, 'value': 'abc', 'limit_value': 2, 'show_value': 3})
second_error = errors[1]
self.assertEqual(
second_error.message,
'Item 2 in the array did not validate: Ensure this value has at most 2 characters (it has 4).'
)
self.assertEqual(second_error.code, 'item_invalid')
self.assertEqual(second_error.params, {'nth': 2, 'value': 'defg', 'limit_value': 2, 'show_value': 4})
def test_validators_fail(self):
field = SimpleArrayField(forms.RegexField('[a-e]{2}'))
with self.assertRaises(exceptions.ValidationError) as cm:
field.clean('a,bc,de')
self.assertEqual(cm.exception.messages[0], 'Item 0 in the array did not validate: Enter a valid value.')
def test_delimiter(self):
field = SimpleArrayField(forms.CharField(), delimiter='|')
value = field.clean('a|b|c')
self.assertEqual(value, ['a', 'b', 'c'])
def test_delimiter_with_nesting(self):
field = SimpleArrayField(SimpleArrayField(forms.CharField()), delimiter='|')
value = field.clean('a,b|c,d')
self.assertEqual(value, [['a', 'b'], ['c', 'd']])
def test_prepare_value(self):
field = SimpleArrayField(forms.CharField())
value = field.prepare_value(['a', 'b', 'c'])
self.assertEqual(value, 'a,b,c')
def test_max_length(self):
field = SimpleArrayField(forms.CharField(), max_length=2)
with self.assertRaises(exceptions.ValidationError) as cm:
field.clean('a,b,c')
self.assertEqual(cm.exception.messages[0], 'List contains 3 items, it should contain no more than 2.')
def test_min_length(self):
field = SimpleArrayField(forms.CharField(), min_length=4)
with self.assertRaises(exceptions.ValidationError) as cm:
field.clean('a,b,c')
self.assertEqual(cm.exception.messages[0], 'List contains 3 items, it should contain no fewer than 4.')
def test_required(self):
field = SimpleArrayField(forms.CharField(), required=True)
with self.assertRaises(exceptions.ValidationError) as cm:
field.clean('')
self.assertEqual(cm.exception.messages[0], 'This field is required.')
def test_model_field_formfield(self):
model_field = ArrayField(models.CharField(max_length=27))
form_field = model_field.formfield()
self.assertIsInstance(form_field, SimpleArrayField)
self.assertIsInstance(form_field.base_field, forms.CharField)
self.assertEqual(form_field.base_field.max_length, 27)
def test_model_field_formfield_size(self):
model_field = ArrayField(models.CharField(max_length=27), size=4)
form_field = model_field.formfield()
self.assertIsInstance(form_field, SimpleArrayField)
self.assertEqual(form_field.max_length, 4)
def test_model_field_choices(self):
model_field = ArrayField(models.IntegerField(choices=((1, 'A'), (2, 'B'))))
form_field = model_field.formfield()
self.assertEqual(form_field.clean('1,2'), [1, 2])
def test_already_converted_value(self):
field = SimpleArrayField(forms.CharField())
vals = ['a', 'b', 'c']
self.assertEqual(field.clean(vals), vals)
class TestSplitFormField(PostgreSQLTestCase):
def test_valid(self):
class SplitForm(forms.Form):
array = SplitArrayField(forms.CharField(), size=3)
data = {'array_0': 'a', 'array_1': 'b', 'array_2': 'c'}
form = SplitForm(data)
self.assertTrue(form.is_valid())
self.assertEqual(form.cleaned_data, {'array': ['a', 'b', 'c']})
def test_required(self):
class SplitForm(forms.Form):
array = SplitArrayField(forms.CharField(), required=True, size=3)
data = {'array_0': '', 'array_1': '', 'array_2': ''}
form = SplitForm(data)
self.assertFalse(form.is_valid())
self.assertEqual(form.errors, {'array': ['This field is required.']})
def test_remove_trailing_nulls(self):
class SplitForm(forms.Form):
array = SplitArrayField(forms.CharField(required=False), size=5, remove_trailing_nulls=True)
data = {'array_0': 'a', 'array_1': '', 'array_2': 'b', 'array_3': '', 'array_4': ''}
form = SplitForm(data)
self.assertTrue(form.is_valid(), form.errors)
self.assertEqual(form.cleaned_data, {'array': ['a', '', 'b']})
def test_remove_trailing_nulls_not_required(self):
class SplitForm(forms.Form):
array = SplitArrayField(
forms.CharField(required=False),
size=2,
remove_trailing_nulls=True,
required=False,
)
data = {'array_0': '', 'array_1': ''}
form = SplitForm(data)
self.assertTrue(form.is_valid())
self.assertEqual(form.cleaned_data, {'array': []})
def test_required_field(self):
class SplitForm(forms.Form):
array = SplitArrayField(forms.CharField(), size=3)
data = {'array_0': 'a', 'array_1': 'b', 'array_2': ''}
form = SplitForm(data)
self.assertFalse(form.is_valid())
self.assertEqual(form.errors, {'array': ['Item 2 in the array did not validate: This field is required.']})
def test_invalid_integer(self):
msg = 'Item 1 in the array did not validate: Ensure this value is less than or equal to 100.'
with self.assertRaisesMessage(exceptions.ValidationError, msg):
SplitArrayField(forms.IntegerField(max_value=100), size=2).clean([0, 101])
# To locate the widget's template.
@modify_settings(INSTALLED_APPS={'append': 'django.contrib.postgres'})
def test_rendering(self):
class SplitForm(forms.Form):
array = SplitArrayField(forms.CharField(), size=3)
self.assertHTMLEqual(str(SplitForm()), '''
<tr>
<th><label for="id_array_0">Array:</label></th>
<td>
<input id="id_array_0" name="array_0" type="text" required />
<input id="id_array_1" name="array_1" type="text" required />
<input id="id_array_2" name="array_2" type="text" required />
</td>
</tr>
''')
def test_invalid_char_length(self):
field = SplitArrayField(forms.CharField(max_length=2), size=3)
with self.assertRaises(exceptions.ValidationError) as cm:
field.clean(['abc', 'c', 'defg'])
self.assertEqual(cm.exception.messages, [
'Item 0 in the array did not validate: Ensure this value has at most 2 characters (it has 3).',
'Item 2 in the array did not validate: Ensure this value has at most 2 characters (it has 4).',
])
def test_splitarraywidget_value_omitted_from_data(self):
class Form(forms.ModelForm):
field = SplitArrayField(forms.IntegerField(), required=False, size=2)
class Meta:
model = IntegerArrayModel
fields = ('field',)
form = Form({'field_0': '1', 'field_1': '2'})
self.assertEqual(form.errors, {})
obj = form.save(commit=False)
self.assertEqual(obj.field, [1, 2])
class TestSplitFormWidget(PostgreSQLWidgetTestCase):
def test_get_context(self):
self.assertEqual(
SplitArrayWidget(forms.TextInput(), size=2).get_context('name', ['val1', 'val2']),
{
'widget': {
'name': 'name',
'is_hidden': False,
'required': False,
'value': "['val1', 'val2']",
'attrs': {},
'template_name': 'postgres/widgets/split_array.html',
'subwidgets': [
{
'name': 'name_0',
'is_hidden': False,
'required': False,
'value': 'val1',
'attrs': {},
'template_name': 'django/forms/widgets/text.html',
'type': 'text',
},
{
'name': 'name_1',
'is_hidden': False,
'required': False,
'value': 'val2',
'attrs': {},
'template_name': 'django/forms/widgets/text.html',
'type': 'text',
},
]
}
}
)
def test_render(self):
self.check_html(
SplitArrayWidget(forms.TextInput(), size=2), 'array', None,
"""
<input name="array_0" type="text" />
<input name="array_1" type="text" />
"""
)
def test_render_attrs(self):
self.check_html(
SplitArrayWidget(forms.TextInput(), size=2),
'array', ['val1', 'val2'], attrs={'id': 'foo'},
html=(
"""
<input id="foo_0" name="array_0" type="text" value="val1" />
<input id="foo_1" name="array_1" type="text" value="val2" />
"""
)
)
def test_value_omitted_from_data(self):
widget = SplitArrayWidget(forms.TextInput(), size=2)
self.assertIs(widget.value_omitted_from_data({}, {}, 'field'), True)
self.assertIs(widget.value_omitted_from_data({'field_0': 'value'}, {}, 'field'), False)
self.assertIs(widget.value_omitted_from_data({'field_1': 'value'}, {}, 'field'), False)
self.assertIs(widget.value_omitted_from_data({'field_0': 'value', 'field_1': 'value'}, {}, 'field'), False)