django/tests/postgres_tests/test_hstore.py

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import json
from django.core import checks, exceptions, serializers
from django.db import connection
from django.db.models import F, OuterRef, Subquery
from django.db.models.expressions import RawSQL
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from django.forms import Form
from django.test.utils import CaptureQueriesContext, isolate_apps
from . import PostgreSQLSimpleTestCase, PostgreSQLTestCase
from .models import HStoreModel, PostgreSQLModel
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
class SimpleTests(PostgreSQLTestCase):
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"}
expected_value = {"a": "1", "b": "B", "2": "c", "ï": "ê"}
instance = HStoreModel.objects.create(field=value)
instance = HStoreModel.objects.get()
self.assertEqual(instance.field, expected_value)
instance = HStoreModel.objects.get(field__a=1)
self.assertEqual(instance.field, expected_value)
instance = HStoreModel.objects.get(field__has_keys=[2, "a", "ï"])
self.assertEqual(instance.field, expected_value)
def test_array_field(self):
value = [
{"a": 1, "b": "B", 2: "c", "ï": "ê"},
{"a": 1, "b": "B", 2: "c", "ï": "ê"},
]
expected_value = [
{"a": "1", "b": "B", "2": "c", "ï": "ê"},
{"a": "1", "b": "B", "2": "c", "ï": "ê"},
]
instance = HStoreModel.objects.create(array_field=value)
instance.refresh_from_db()
self.assertEqual(instance.array_field, expected_value)
class TestQuerying(PostgreSQLTestCase):
@classmethod
def setUpTestData(cls):
cls.objs = HStoreModel.objects.bulk_create(
[
HStoreModel(field={"a": "b"}),
HStoreModel(field={"a": "b", "c": "d"}),
HStoreModel(field={"c": "d"}),
HStoreModel(field={}),
HStoreModel(field=None),
HStoreModel(field={"cat": "TigrOu", "breed": "birman"}),
HStoreModel(field={"cat": "minou", "breed": "ragdoll"}),
HStoreModel(field={"cat": "kitty", "breed": "Persian"}),
HStoreModel(field={"cat": "Kit Kat", "breed": "persian"}),
]
)
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]
)
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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_key_transform_annotation(self):
qs = HStoreModel.objects.annotate(a=F("field__a"))
self.assertCountEqual(
qs.values_list("a", flat=True),
["b", "b", None, None, None, None, None, None, None],
)
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_contains(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__a__contains="b"), self.objs[:2]
)
def test_field_chaining_icontains(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__cat__icontains="INo"),
[self.objs[6]],
)
def test_field_chaining_startswith(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__cat__startswith="kit"),
[self.objs[7]],
)
def test_field_chaining_istartswith(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__cat__istartswith="kit"),
self.objs[7:],
)
def test_field_chaining_endswith(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__cat__endswith="ou"),
[self.objs[6]],
)
def test_field_chaining_iendswith(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__cat__iendswith="ou"),
self.objs[5:7],
)
def test_field_chaining_iexact(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__breed__iexact="persian"),
self.objs[7:],
)
def test_field_chaining_regex(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__cat__regex=r"ou$"),
[self.objs[6]],
)
def test_field_chaining_iregex(self):
self.assertSequenceEqual(
HStoreModel.objects.filter(field__cat__iregex=r"oU$"),
self.objs[5:7],
)
def test_order_by_field(self):
more_objs = (
HStoreModel.objects.create(field={"g": "637"}),
HStoreModel.objects.create(field={"g": "002"}),
HStoreModel.objects.create(field={"g": "042"}),
HStoreModel.objects.create(field={"g": "981"}),
)
self.assertSequenceEqual(
HStoreModel.objects.filter(field__has_key="g").order_by("field__g"),
[more_objs[1], more_objs[2], more_objs[0], more_objs[3]],
)
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[2:9] + [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])
@isolate_apps("postgres_tests")
class TestChecks(PostgreSQLSimpleTestCase):
def test_invalid_default(self):
class MyModel(PostgreSQLModel):
field = HStoreField(default={})
model = MyModel()
self.assertEqual(
model.check(),
[
checks.Warning(
msg=(
"HStoreField default should be a callable instead of an "
"instance so that it's not shared between all field "
"instances."
),
hint="Use a callable instead, e.g., use `dict` instead of `{}`.",
obj=MyModel._meta.get_field("field"),
id="fields.E010",
)
],
)
def test_valid_default(self):
class MyModel(PostgreSQLModel):
field = HStoreField(default=dict)
self.assertEqual(MyModel().check(), [])
class TestSerialization(PostgreSQLSimpleTestCase):
test_data = json.dumps(
[
{
"model": "postgres_tests.hstoremodel",
"pk": None,
"fields": {
"field": json.dumps({"a": "b"}),
"array_field": json.dumps(
[
json.dumps({"a": "b"}),
json.dumps({"b": "a"}),
]
),
},
}
]
)
def test_dumping(self):
instance = HStoreModel(field={"a": "b"}, array_field=[{"a": "b"}, {"b": "a"}])
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"})
self.assertEqual(instance.array_field, [{"a": "b"}, {"b": "a"}])
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(PostgreSQLSimpleTestCase):
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(PostgreSQLSimpleTestCase):
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):
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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(PostgreSQLSimpleTestCase):
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}
)