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# -*- coding: utf-8 -*-
from __future__ import unicode_literals
import json
from django.core import exceptions, serializers
from django.db import connection
from django.db.models.expressions import OuterRef, RawSQL, Subquery
from django.forms import Form
from django.test.utils import CaptureQueriesContext, modify_settings
from . import PostgreSQLTestCase
from .models import HStoreModel
try:
from django.contrib.postgres import forms
from django.contrib.postgres.fields import HStoreField
from django.contrib.postgres.fields.hstore import KeyTransform
from django.contrib.postgres.validators import KeysValidator
except ImportError:
pass
@modify_settings(INSTALLED_APPS={'append': 'django.contrib.postgres'})
class HStoreTestCase(PostgreSQLTestCase):
pass
class SimpleTests(HStoreTestCase):
def test_save_load_success(self):
value = {'a': 'b'}
instance = HStoreModel(field=value)
instance.save()
reloaded = HStoreModel.objects.get()
self.assertEqual(reloaded.field, value)
def test_null(self):
instance = HStoreModel(field=None)
instance.save()
reloaded = HStoreModel.objects.get()
self.assertIsNone(reloaded.field)
def test_value_null(self):
value = {'a': None}
instance = HStoreModel(field=value)
instance.save()
reloaded = HStoreModel.objects.get()
self.assertEqual(reloaded.field, value)
def test_key_val_cast_to_string(self):
value = {'a': 1, 'b': 'B', 2: 'c', 'ï': 'ê', b'x': b'test'}
expected_value = {'a': '1', 'b': 'B', '2': 'c', 'ï': 'ê', 'x': 'test'}
instance = HStoreModel.objects.create(field=value)
instance = HStoreModel.objects.get()
self.assertDictEqual(instance.field, expected_value)
instance = HStoreModel.objects.get(field__a=1)
self.assertDictEqual(instance.field, expected_value)
instance = HStoreModel.objects.get(field__has_keys=[2, 'a', 'ï'])
self.assertDictEqual(instance.field, expected_value)
class TestQuerying(HStoreTestCase):
def setUp(self):
self.objs = [
HStoreModel.objects.create(field={'a': 'b'}),
HStoreModel.objects.create(field={'a': 'b', 'c': 'd'}),
HStoreModel.objects.create(field={'c': 'd'}),
HStoreModel.objects.create(field={}),
HStoreModel.objects.create(field=None),
]
def test_exact(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__exact={'a': 'b'}),
self.objs[:1]
)
def test_contained_by(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__contained_by={'a': 'b', 'c': 'd'}),
self.objs[:4]
)
def test_contains(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__contains={'a': 'b'}),
self.objs[:2]
)
def test_in_generator(self):
def search():
yield {'a': 'b'}
self.assertSequenceEqual(
HStoreModel.objects.filter(field__in=search()),
self.objs[:1]
)
def test_has_key(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__has_key='c'),
self.objs[1:3]
)
def test_has_keys(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__has_keys=['a', 'c']),
self.objs[1:2]
)
def test_has_any_keys(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__has_any_keys=['a', 'c']),
self.objs[:3]
)
def test_key_transform(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__a='b'),
self.objs[:2]
)
def test_key_transform_raw_expression(self):
expr = RawSQL('%s::hstore', ['x => b, y => c'])
self.assertSequenceEqual(
HStoreModel.objects.filter(field__a=KeyTransform('x', expr)),
self.objs[:2]
)
def test_keys(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__keys=['a']),
self.objs[:1]
)
def test_values(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__values=['b']),
self.objs[:1]
)
def test_field_chaining(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__a__contains='b'),
self.objs[:2]
)
def test_keys_contains(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__keys__contains=['a']),
self.objs[:2]
)
def test_values_overlap(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__values__overlap=['b', 'd']),
self.objs[:3]
)
def test_key_isnull(self):
obj = HStoreModel.objects.create(field={'a': None})
self.assertSequenceEqual(
HStoreModel.objects.filter(field__a__isnull=True),
self.objs[2:5] + [obj]
)
self.assertSequenceEqual(
HStoreModel.objects.filter(field__a__isnull=False),
self.objs[:2]
)
def test_usage_in_subquery(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(id__in=HStoreModel.objects.filter(field__a='b')),
self.objs[:2]
)
def test_key_sql_injection(self):
with CaptureQueriesContext(connection) as queries:
self.assertFalse(
HStoreModel.objects.filter(**{
"field__test' = 'a') OR 1 = 1 OR ('d": 'x',
}).exists()
)
self.assertIn(
"""."field" -> 'test'' = ''a'') OR 1 = 1 OR (''d') = 'x' """,
queries[0]['sql'],
)
def test_obj_subquery_lookup(self):
qs = HStoreModel.objects.annotate(
value=Subquery(HStoreModel.objects.filter(pk=OuterRef('pk')).values('field')),
).filter(value__a='b')
self.assertSequenceEqual(qs, self.objs[:2])
class TestSerialization(HStoreTestCase):
test_data = ('[{"fields": {"field": "{\\"a\\": \\"b\\"}"}, '
'"model": "postgres_tests.hstoremodel", "pk": null}]')
def test_dumping(self):
instance = HStoreModel(field={'a': 'b'})
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, {'a': 'b'})
def test_roundtrip_with_null(self):
instance = HStoreModel(field={'a': 'b', 'c': None})
data = serializers.serialize('json', [instance])
new_instance = list(serializers.deserialize('json', data))[0].object
self.assertEqual(instance.field, new_instance.field)
class TestValidation(HStoreTestCase):
def test_not_a_string(self):
field = HStoreField()
with self.assertRaises(exceptions.ValidationError) as cm:
field.clean({'a': 1}, None)
self.assertEqual(cm.exception.code, 'not_a_string')
self.assertEqual(cm.exception.message % cm.exception.params, 'The value of "a" is not a string or null.')
def test_none_allowed_as_value(self):
field = HStoreField()
self.assertEqual(field.clean({'a': None}, None), {'a': None})
class TestFormField(HStoreTestCase):
def test_valid(self):
field = forms.HStoreField()
value = field.clean('{"a": "b"}')
self.assertEqual(value, {'a': 'b'})
def test_invalid_json(self):
field = forms.HStoreField()
with self.assertRaises(exceptions.ValidationError) as cm:
field.clean('{"a": "b"')
self.assertEqual(cm.exception.messages[0], 'Could not load JSON data.')
self.assertEqual(cm.exception.code, 'invalid_json')
def test_non_dict_json(self):
field = forms.HStoreField()
msg = 'Input must be a JSON dictionary.'
with self.assertRaisesMessage(exceptions.ValidationError, msg) as cm:
field.clean('["a", "b", 1]')
self.assertEqual(cm.exception.code, 'invalid_format')
def test_not_string_values(self):
field = forms.HStoreField()
value = field.clean('{"a": 1}')
self.assertEqual(value, {'a': '1'})
def test_none_value(self):
field = forms.HStoreField()
value = field.clean('{"a": null}')
self.assertEqual(value, {'a': None})
def test_empty(self):
field = forms.HStoreField(required=False)
value = field.clean('')
self.assertEqual(value, {})
def test_model_field_formfield(self):
model_field = HStoreField()
form_field = model_field.formfield()
self.assertIsInstance(form_field, forms.HStoreField)
def test_field_has_changed(self):
class HStoreFormTest(Form):
f1 = forms.HStoreField()
form_w_hstore = HStoreFormTest()
self.assertFalse(form_w_hstore.has_changed())
form_w_hstore = HStoreFormTest({'f1': '{"a": 1}'})
self.assertTrue(form_w_hstore.has_changed())
form_w_hstore = HStoreFormTest({'f1': '{"a": 1}'}, initial={'f1': '{"a": 1}'})
self.assertFalse(form_w_hstore.has_changed())
form_w_hstore = HStoreFormTest({'f1': '{"a": 2}'}, initial={'f1': '{"a": 1}'})
self.assertTrue(form_w_hstore.has_changed())
form_w_hstore = HStoreFormTest({'f1': '{"a": 1}'}, initial={'f1': {"a": 1}})
self.assertFalse(form_w_hstore.has_changed())
form_w_hstore = HStoreFormTest({'f1': '{"a": 2}'}, initial={'f1': {"a": 1}})
self.assertTrue(form_w_hstore.has_changed())
class TestValidator(HStoreTestCase):
def test_simple_valid(self):
validator = KeysValidator(keys=['a', 'b'])
validator({'a': 'foo', 'b': 'bar', 'c': 'baz'})
def test_missing_keys(self):
validator = KeysValidator(keys=['a', 'b'])
with self.assertRaises(exceptions.ValidationError) as cm:
validator({'a': 'foo', 'c': 'baz'})
self.assertEqual(cm.exception.messages[0], 'Some keys were missing: b')
self.assertEqual(cm.exception.code, 'missing_keys')
def test_strict_valid(self):
validator = KeysValidator(keys=['a', 'b'], strict=True)
validator({'a': 'foo', 'b': 'bar'})
def test_extra_keys(self):
validator = KeysValidator(keys=['a', 'b'], strict=True)
with self.assertRaises(exceptions.ValidationError) as cm:
validator({'a': 'foo', 'b': 'bar', 'c': 'baz'})
self.assertEqual(cm.exception.messages[0], 'Some unknown keys were provided: c')
self.assertEqual(cm.exception.code, 'extra_keys')
def test_custom_messages(self):
messages = {
'missing_keys': 'Foobar',
}
validator = KeysValidator(keys=['a', 'b'], strict=True, messages=messages)
with self.assertRaises(exceptions.ValidationError) as cm:
validator({'a': 'foo', 'c': 'baz'})
self.assertEqual(cm.exception.messages[0], 'Foobar')
self.assertEqual(cm.exception.code, 'missing_keys')
with self.assertRaises(exceptions.ValidationError) as cm:
validator({'a': 'foo', 'b': 'bar', 'c': 'baz'})
self.assertEqual(cm.exception.messages[0], 'Some unknown keys were provided: c')
self.assertEqual(cm.exception.code, 'extra_keys')
def test_deconstruct(self):
messages = {
'missing_keys': 'Foobar',
}
validator = KeysValidator(keys=['a', 'b'], strict=True, messages=messages)
path, args, kwargs = validator.deconstruct()
self.assertEqual(path, 'django.contrib.postgres.validators.KeysValidator')
self.assertEqual(args, ())
self.assertEqual(kwargs, {'keys': ['a', 'b'], 'strict': True, 'messages': messages})
|
