import operator
import uuid
from unittest import mock

from django import forms
from django.core import serializers
from django.core.exceptions import ValidationError
from django.core.serializers.json import DjangoJSONEncoder
from django.db import (
    DataError,
    IntegrityError,
    NotSupportedError,
    OperationalError,
    connection,
    models,
)
from django.db.models import (
    Count,
    ExpressionWrapper,
    F,
    IntegerField,
    JSONField,
    OuterRef,
    Q,
    Subquery,
    Transform,
    Value,
)
from django.db.models.expressions import RawSQL
from django.db.models.fields.json import (
    KT,
    KeyTextTransform,
    KeyTransform,
    KeyTransformFactory,
    KeyTransformTextLookupMixin,
)
from django.db.models.functions import Cast
from django.test import SimpleTestCase, TestCase, skipIfDBFeature, skipUnlessDBFeature
from django.test.utils import CaptureQueriesContext
from django.utils.deprecation import RemovedInDjango51Warning

from .models import CustomJSONDecoder, JSONModel, NullableJSONModel, RelatedJSONModel


@skipUnlessDBFeature("supports_json_field")
class JSONFieldTests(TestCase):
    def test_invalid_value(self):
        msg = "is not JSON serializable"
        with self.assertRaisesMessage(TypeError, msg):
            NullableJSONModel.objects.create(
                value={
                    "uuid": uuid.UUID("d85e2076-b67c-4ee7-8c3a-2bf5a2cc2475"),
                }
            )

    def test_custom_encoder_decoder(self):
        value = {"uuid": uuid.UUID("{d85e2076-b67c-4ee7-8c3a-2bf5a2cc2475}")}
        obj = NullableJSONModel(value_custom=value)
        obj.clean_fields()
        obj.save()
        obj.refresh_from_db()
        self.assertEqual(obj.value_custom, value)

    def test_db_check_constraints(self):
        value = "{@!invalid json value 123 $!@#"
        with mock.patch.object(DjangoJSONEncoder, "encode", return_value=value):
            with self.assertRaises((IntegrityError, DataError, OperationalError)):
                NullableJSONModel.objects.create(value_custom=value)


class TestMethods(SimpleTestCase):
    def test_deconstruct(self):
        field = models.JSONField()
        name, path, args, kwargs = field.deconstruct()
        self.assertEqual(path, "django.db.models.JSONField")
        self.assertEqual(args, [])
        self.assertEqual(kwargs, {})

    def test_deconstruct_custom_encoder_decoder(self):
        field = models.JSONField(encoder=DjangoJSONEncoder, decoder=CustomJSONDecoder)
        name, path, args, kwargs = field.deconstruct()
        self.assertEqual(kwargs["encoder"], DjangoJSONEncoder)
        self.assertEqual(kwargs["decoder"], CustomJSONDecoder)

    def test_get_transforms(self):
        @models.JSONField.register_lookup
        class MyTransform(Transform):
            lookup_name = "my_transform"

        field = models.JSONField()
        transform = field.get_transform("my_transform")
        self.assertIs(transform, MyTransform)
        models.JSONField._unregister_lookup(MyTransform)
        transform = field.get_transform("my_transform")
        self.assertIsInstance(transform, KeyTransformFactory)

    def test_key_transform_text_lookup_mixin_non_key_transform(self):
        transform = Transform("test")
        msg = (
            "Transform should be an instance of KeyTransform in order to use "
            "this lookup."
        )
        with self.assertRaisesMessage(TypeError, msg):
            KeyTransformTextLookupMixin(transform)

    def test_get_prep_value(self):
        class JSONFieldGetPrepValue(models.JSONField):
            def get_prep_value(self, value):
                if value is True:
                    return {"value": True}
                return value

        def noop_adapt_json_value(value, encoder):
            return value

        field = JSONFieldGetPrepValue()
        with mock.patch.object(
            connection.ops, "adapt_json_value", noop_adapt_json_value
        ):
            self.assertEqual(
                field.get_db_prep_value(True, connection, prepared=False),
                {"value": True},
            )
            self.assertIs(
                field.get_db_prep_value(True, connection, prepared=True), True
            )
            self.assertEqual(field.get_db_prep_value(1, connection, prepared=False), 1)


class TestValidation(SimpleTestCase):
    def test_invalid_encoder(self):
        msg = "The encoder parameter must be a callable object."
        with self.assertRaisesMessage(ValueError, msg):
            models.JSONField(encoder=DjangoJSONEncoder())

    def test_invalid_decoder(self):
        msg = "The decoder parameter must be a callable object."
        with self.assertRaisesMessage(ValueError, msg):
            models.JSONField(decoder=CustomJSONDecoder())

    def test_validation_error(self):
        field = models.JSONField()
        msg = "Value must be valid JSON."
        value = uuid.UUID("{d85e2076-b67c-4ee7-8c3a-2bf5a2cc2475}")
        with self.assertRaisesMessage(ValidationError, msg):
            field.clean({"uuid": value}, None)

    def test_custom_encoder(self):
        field = models.JSONField(encoder=DjangoJSONEncoder)
        value = uuid.UUID("{d85e2076-b67c-4ee7-8c3a-2bf5a2cc2475}")
        field.clean({"uuid": value}, None)


class TestFormField(SimpleTestCase):
    def test_formfield(self):
        model_field = models.JSONField()
        form_field = model_field.formfield()
        self.assertIsInstance(form_field, forms.JSONField)

    def test_formfield_custom_encoder_decoder(self):
        model_field = models.JSONField(
            encoder=DjangoJSONEncoder, decoder=CustomJSONDecoder
        )
        form_field = model_field.formfield()
        self.assertIs(form_field.encoder, DjangoJSONEncoder)
        self.assertIs(form_field.decoder, CustomJSONDecoder)


class TestSerialization(SimpleTestCase):
    test_data = (
        '[{"fields": {"value": %s}, "model": "model_fields.jsonmodel", "pk": null}]'
    )
    test_values = (
        # (Python value, serialized value),
        ({"a": "b", "c": None}, '{"a": "b", "c": null}'),
        ("abc", '"abc"'),
        ('{"a": "a"}', '"{\\"a\\": \\"a\\"}"'),
    )

    def test_dumping(self):
        for value, serialized in self.test_values:
            with self.subTest(value=value):
                instance = JSONModel(value=value)
                data = serializers.serialize("json", [instance])
                self.assertJSONEqual(data, self.test_data % serialized)

    def test_loading(self):
        for value, serialized in self.test_values:
            with self.subTest(value=value):
                instance = list(
                    serializers.deserialize("json", self.test_data % serialized)
                )[0].object
                self.assertEqual(instance.value, value)

    def test_xml_serialization(self):
        test_xml_data = (
            '<django-objects version="1.0">'
            '<object model="model_fields.nullablejsonmodel">'
            '<field name="value" type="JSONField">%s'
            "</field></object></django-objects>"
        )
        for value, serialized in self.test_values:
            with self.subTest(value=value):
                instance = NullableJSONModel(value=value)
                data = serializers.serialize("xml", [instance], fields=["value"])
                self.assertXMLEqual(data, test_xml_data % serialized)
                new_instance = list(serializers.deserialize("xml", data))[0].object
                self.assertEqual(new_instance.value, instance.value)


@skipUnlessDBFeature("supports_json_field")
class TestSaveLoad(TestCase):
    def test_null(self):
        obj = NullableJSONModel(value=None)
        obj.save()
        obj.refresh_from_db()
        self.assertIsNone(obj.value)

    def test_ambiguous_str_value_deprecation(self):
        msg = (
            "Providing an encoded JSON string via Value() is deprecated. Use Value([], "
            "output_field=JSONField()) instead."
        )
        with self.assertWarnsMessage(RemovedInDjango51Warning, msg):
            obj = NullableJSONModel.objects.create(value=Value("[]"))
        obj.refresh_from_db()
        self.assertEqual(obj.value, [])

    @skipUnlessDBFeature("supports_primitives_in_json_field")
    def test_value_str_primitives_deprecation(self):
        msg = (
            "Providing an encoded JSON string via Value() is deprecated. Use "
            "Value(None, output_field=JSONField()) instead."
        )
        with self.assertWarnsMessage(RemovedInDjango51Warning, msg):
            obj = NullableJSONModel.objects.create(value=Value("null"))
        obj.refresh_from_db()
        self.assertIsNone(obj.value)
        obj = NullableJSONModel.objects.create(value=Value("invalid-json"))
        obj.refresh_from_db()
        self.assertEqual(obj.value, "invalid-json")

    @skipUnlessDBFeature("supports_primitives_in_json_field")
    def test_json_null_different_from_sql_null(self):
        json_null = NullableJSONModel.objects.create(value=Value(None, JSONField()))
        NullableJSONModel.objects.update(value=Value(None, JSONField()))
        json_null.refresh_from_db()
        sql_null = NullableJSONModel.objects.create(value=None)
        sql_null.refresh_from_db()
        # 'null' is not equal to NULL in the database.
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value=Value(None, JSONField())),
            [json_null],
        )
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value=None),
            [json_null],
        )
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__isnull=True),
            [sql_null],
        )
        # 'null' is equal to NULL in Python (None).
        self.assertEqual(json_null.value, sql_null.value)

    @skipUnlessDBFeature("supports_primitives_in_json_field")
    def test_primitives(self):
        values = [
            True,
            1,
            1.45,
            "String",
            "",
        ]
        for value in values:
            with self.subTest(value=value):
                obj = JSONModel(value=value)
                obj.save()
                obj.refresh_from_db()
                self.assertEqual(obj.value, value)

    def test_dict(self):
        values = [
            {},
            {"name": "John", "age": 20, "height": 180.3},
            {"a": True, "b": {"b1": False, "b2": None}},
        ]
        for value in values:
            with self.subTest(value=value):
                obj = JSONModel.objects.create(value=value)
                obj.refresh_from_db()
                self.assertEqual(obj.value, value)

    def test_list(self):
        values = [
            [],
            ["John", 20, 180.3],
            [True, [False, None]],
        ]
        for value in values:
            with self.subTest(value=value):
                obj = JSONModel.objects.create(value=value)
                obj.refresh_from_db()
                self.assertEqual(obj.value, value)

    def test_realistic_object(self):
        value = {
            "name": "John",
            "age": 20,
            "pets": [
                {"name": "Kit", "type": "cat", "age": 2},
                {"name": "Max", "type": "dog", "age": 1},
            ],
            "courses": [
                ["A1", "A2", "A3"],
                ["B1", "B2"],
                ["C1"],
            ],
        }
        obj = JSONModel.objects.create(value=value)
        obj.refresh_from_db()
        self.assertEqual(obj.value, value)


@skipUnlessDBFeature("supports_json_field")
class TestQuerying(TestCase):
    @classmethod
    def setUpTestData(cls):
        cls.primitives = [True, False, "yes", 7, 9.6]
        values = [
            None,
            [],
            {},
            {"a": "b", "c": 14},
            {
                "a": "b",
                "c": 14,
                "d": ["e", {"f": "g"}],
                "h": True,
                "i": False,
                "j": None,
                "k": {"l": "m"},
                "n": [None, True, False],
                "o": '"quoted"',
                "p": 4.2,
                "r": {"s": True, "t": False},
            },
            [1, [2]],
            {"k": True, "l": False, "foo": "bax"},
            {
                "foo": "bar",
                "baz": {"a": "b", "c": "d"},
                "bar": ["foo", "bar"],
                "bax": {"foo": "bar"},
            },
        ]
        cls.objs = [NullableJSONModel.objects.create(value=value) for value in values]
        if connection.features.supports_primitives_in_json_field:
            cls.objs.extend(
                [
                    NullableJSONModel.objects.create(value=value)
                    for value in cls.primitives
                ]
            )
        cls.raw_sql = "%s::jsonb" if connection.vendor == "postgresql" else "%s"

    def test_exact(self):
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__exact={}),
            [self.objs[2]],
        )

    def test_exact_complex(self):
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__exact={"a": "b", "c": 14}),
            [self.objs[3]],
        )

    def test_icontains(self):
        self.assertCountEqual(
            NullableJSONModel.objects.filter(value__icontains="BaX"),
            self.objs[6:8],
        )

    def test_isnull(self):
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__isnull=True),
            [self.objs[0]],
        )

    def test_ordering_by_transform(self):
        mariadb = connection.vendor == "mysql" and connection.mysql_is_mariadb
        values = [
            {"ord": 93, "name": "bar"},
            {"ord": 22.1, "name": "foo"},
            {"ord": -1, "name": "baz"},
            {"ord": 21.931902, "name": "spam"},
            {"ord": -100291029, "name": "eggs"},
        ]
        for field_name in ["value", "value_custom"]:
            with self.subTest(field=field_name):
                objs = [
                    NullableJSONModel.objects.create(**{field_name: value})
                    for value in values
                ]
                query = NullableJSONModel.objects.filter(
                    **{"%s__name__isnull" % field_name: False},
                ).order_by("%s__ord" % field_name)
                expected = [objs[4], objs[2], objs[3], objs[1], objs[0]]
                if mariadb or connection.vendor == "oracle":
                    # MariaDB and Oracle return JSON values as strings.
                    expected = [objs[2], objs[4], objs[3], objs[1], objs[0]]
                self.assertSequenceEqual(query, expected)

    def test_ordering_grouping_by_key_transform(self):
        base_qs = NullableJSONModel.objects.filter(value__d__0__isnull=False)
        for qs in (
            base_qs.order_by("value__d__0"),
            base_qs.annotate(
                key=KeyTransform("0", KeyTransform("d", "value"))
            ).order_by("key"),
        ):
            self.assertSequenceEqual(qs, [self.objs[4]])
        none_val = "" if connection.features.interprets_empty_strings_as_nulls else None
        qs = NullableJSONModel.objects.filter(value__isnull=False)
        self.assertQuerySetEqual(
            qs.filter(value__isnull=False)
            .annotate(key=KT("value__d__1__f"))
            .values("key")
            .annotate(count=Count("key"))
            .order_by("count"),
            [(none_val, 0), ("g", 1)],
            operator.itemgetter("key", "count"),
        )

    def test_ordering_grouping_by_count(self):
        qs = (
            NullableJSONModel.objects.filter(
                value__isnull=False,
            )
            .values("value__d__0")
            .annotate(count=Count("value__d__0"))
            .order_by("count")
        )
        self.assertQuerySetEqual(qs, [0, 1], operator.itemgetter("count"))

    def test_order_grouping_custom_decoder(self):
        NullableJSONModel.objects.create(value_custom={"a": "b"})
        qs = NullableJSONModel.objects.filter(value_custom__isnull=False)
        self.assertSequenceEqual(
            qs.values(
                "value_custom__a",
            )
            .annotate(
                count=Count("id"),
            )
            .order_by("value_custom__a"),
            [{"value_custom__a": "b", "count": 1}],
        )

    def test_key_transform_raw_expression(self):
        expr = RawSQL(self.raw_sql, ['{"x": "bar"}'])
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__foo=KeyTransform("x", expr)),
            [self.objs[7]],
        )

    def test_nested_key_transform_raw_expression(self):
        expr = RawSQL(self.raw_sql, ['{"x": {"y": "bar"}}'])
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(
                value__foo=KeyTransform("y", KeyTransform("x", expr))
            ),
            [self.objs[7]],
        )

    def test_key_transform_expression(self):
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__d__0__isnull=False)
            .annotate(
                key=KeyTransform("d", "value"),
                chain=KeyTransform("0", "key"),
                expr=KeyTransform("0", Cast("key", models.JSONField())),
            )
            .filter(chain=F("expr")),
            [self.objs[4]],
        )

    def test_key_transform_annotation_expression(self):
        obj = NullableJSONModel.objects.create(value={"d": ["e", "e"]})
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__d__0__isnull=False)
            .annotate(
                key=F("value__d"),
                chain=F("key__0"),
                expr=Cast("key", models.JSONField()),
            )
            .filter(chain=F("expr__1")),
            [obj],
        )

    def test_nested_key_transform_expression(self):
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__d__0__isnull=False)
            .annotate(
                key=KeyTransform("d", "value"),
                chain=KeyTransform("f", KeyTransform("1", "key")),
                expr=KeyTransform(
                    "f", KeyTransform("1", Cast("key", models.JSONField()))
                ),
            )
            .filter(chain=F("expr")),
            [self.objs[4]],
        )

    def test_nested_key_transform_annotation_expression(self):
        obj = NullableJSONModel.objects.create(
            value={"d": ["e", {"f": "g"}, {"f": "g"}]},
        )
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__d__0__isnull=False)
            .annotate(
                key=F("value__d"),
                chain=F("key__1__f"),
                expr=Cast("key", models.JSONField()),
            )
            .filter(chain=F("expr__2__f")),
            [obj],
        )

    def test_nested_key_transform_on_subquery(self):
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__d__0__isnull=False)
            .annotate(
                subquery_value=Subquery(
                    NullableJSONModel.objects.filter(pk=OuterRef("pk")).values("value")
                ),
                key=KeyTransform("d", "subquery_value"),
                chain=KeyTransform("f", KeyTransform("1", "key")),
            )
            .filter(chain="g"),
            [self.objs[4]],
        )

    def test_key_text_transform_char_lookup(self):
        qs = NullableJSONModel.objects.annotate(
            char_value=KeyTextTransform("foo", "value"),
        ).filter(char_value__startswith="bar")
        self.assertSequenceEqual(qs, [self.objs[7]])

        qs = NullableJSONModel.objects.annotate(
            char_value=KeyTextTransform(1, KeyTextTransform("bar", "value")),
        ).filter(char_value__startswith="bar")
        self.assertSequenceEqual(qs, [self.objs[7]])

    def test_expression_wrapper_key_transform(self):
        self.assertCountEqual(
            NullableJSONModel.objects.annotate(
                expr=ExpressionWrapper(
                    KeyTransform("c", "value"),
                    output_field=IntegerField(),
                ),
            ).filter(expr__isnull=False),
            self.objs[3:5],
        )

    def test_has_key(self):
        self.assertCountEqual(
            NullableJSONModel.objects.filter(value__has_key="a"),
            [self.objs[3], self.objs[4]],
        )

    def test_has_key_null_value(self):
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__has_key="j"),
            [self.objs[4]],
        )

    def test_has_key_deep(self):
        tests = [
            (Q(value__baz__has_key="a"), self.objs[7]),
            (
                Q(value__has_key=KeyTransform("a", KeyTransform("baz", "value"))),
                self.objs[7],
            ),
            (Q(value__has_key=F("value__baz__a")), self.objs[7]),
            (
                Q(value__has_key=KeyTransform("c", KeyTransform("baz", "value"))),
                self.objs[7],
            ),
            (Q(value__has_key=F("value__baz__c")), self.objs[7]),
            (Q(value__d__1__has_key="f"), self.objs[4]),
            (
                Q(
                    value__has_key=KeyTransform(
                        "f", KeyTransform("1", KeyTransform("d", "value"))
                    )
                ),
                self.objs[4],
            ),
            (Q(value__has_key=F("value__d__1__f")), self.objs[4]),
        ]
        for condition, expected in tests:
            with self.subTest(condition=condition):
                self.assertSequenceEqual(
                    NullableJSONModel.objects.filter(condition),
                    [expected],
                )

    def test_has_key_list(self):
        obj = NullableJSONModel.objects.create(value=[{"a": 1}, {"b": "x"}])
        tests = [
            Q(value__1__has_key="b"),
            Q(value__has_key=KeyTransform("b", KeyTransform(1, "value"))),
            Q(value__has_key=KeyTransform("b", KeyTransform("1", "value"))),
            Q(value__has_key=F("value__1__b")),
        ]
        for condition in tests:
            with self.subTest(condition=condition):
                self.assertSequenceEqual(
                    NullableJSONModel.objects.filter(condition),
                    [obj],
                )

    def test_has_keys(self):
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__has_keys=["a", "c", "h"]),
            [self.objs[4]],
        )

    def test_has_any_keys(self):
        self.assertCountEqual(
            NullableJSONModel.objects.filter(value__has_any_keys=["c", "l"]),
            [self.objs[3], self.objs[4], self.objs[6]],
        )

    def test_has_key_number(self):
        obj = NullableJSONModel.objects.create(
            value={
                "123": "value",
                "nested": {"456": "bar", "lorem": "abc", "999": True},
                "array": [{"789": "baz", "777": "def", "ipsum": 200}],
                "000": "val",
            }
        )
        tests = [
            Q(value__has_key="123"),
            Q(value__nested__has_key="456"),
            Q(value__array__0__has_key="789"),
            Q(value__has_keys=["nested", "123", "array", "000"]),
            Q(value__nested__has_keys=["lorem", "999", "456"]),
            Q(value__array__0__has_keys=["789", "ipsum", "777"]),
            Q(value__has_any_keys=["000", "nonexistent"]),
            Q(value__nested__has_any_keys=["999", "nonexistent"]),
            Q(value__array__0__has_any_keys=["777", "nonexistent"]),
        ]
        for condition in tests:
            with self.subTest(condition=condition):
                self.assertSequenceEqual(
                    NullableJSONModel.objects.filter(condition),
                    [obj],
                )

    @skipUnlessDBFeature("supports_json_field_contains")
    def test_contains(self):
        tests = [
            ({}, self.objs[2:5] + self.objs[6:8]),
            ({"baz": {"a": "b", "c": "d"}}, [self.objs[7]]),
            ({"baz": {"a": "b"}}, [self.objs[7]]),
            ({"baz": {"c": "d"}}, [self.objs[7]]),
            ({"k": True, "l": False}, [self.objs[6]]),
            ({"d": ["e", {"f": "g"}]}, [self.objs[4]]),
            ({"d": ["e"]}, [self.objs[4]]),
            ({"d": [{"f": "g"}]}, [self.objs[4]]),
            ([1, [2]], [self.objs[5]]),
            ([1], [self.objs[5]]),
            ([[2]], [self.objs[5]]),
            ({"n": [None, True, False]}, [self.objs[4]]),
            ({"j": None}, [self.objs[4]]),
        ]
        for value, expected in tests:
            with self.subTest(value=value):
                qs = NullableJSONModel.objects.filter(value__contains=value)
                self.assertCountEqual(qs, expected)

    @skipIfDBFeature("supports_json_field_contains")
    def test_contains_unsupported(self):
        msg = "contains lookup is not supported on this database backend."
        with self.assertRaisesMessage(NotSupportedError, msg):
            NullableJSONModel.objects.filter(
                value__contains={"baz": {"a": "b", "c": "d"}},
            ).get()

    @skipUnlessDBFeature(
        "supports_primitives_in_json_field",
        "supports_json_field_contains",
    )
    def test_contains_primitives(self):
        for value in self.primitives:
            with self.subTest(value=value):
                qs = NullableJSONModel.objects.filter(value__contains=value)
                self.assertIs(qs.exists(), True)

    @skipUnlessDBFeature("supports_json_field_contains")
    def test_contained_by(self):
        qs = NullableJSONModel.objects.filter(
            value__contained_by={"a": "b", "c": 14, "h": True}
        )
        self.assertCountEqual(qs, self.objs[2:4])

    @skipIfDBFeature("supports_json_field_contains")
    def test_contained_by_unsupported(self):
        msg = "contained_by lookup is not supported on this database backend."
        with self.assertRaisesMessage(NotSupportedError, msg):
            NullableJSONModel.objects.filter(value__contained_by={"a": "b"}).get()

    def test_deep_values(self):
        qs = NullableJSONModel.objects.values_list("value__k__l").order_by("pk")
        expected_objs = [(None,)] * len(self.objs)
        expected_objs[4] = ("m",)
        self.assertSequenceEqual(qs, expected_objs)

    @skipUnlessDBFeature("can_distinct_on_fields")
    def test_deep_distinct(self):
        query = NullableJSONModel.objects.distinct("value__k__l").values_list(
            "value__k__l"
        )
        self.assertSequenceEqual(query, [("m",), (None,)])

    def test_isnull_key(self):
        # key__isnull=False works the same as has_key='key'.
        self.assertCountEqual(
            NullableJSONModel.objects.filter(value__a__isnull=True),
            self.objs[:3] + self.objs[5:],
        )
        self.assertCountEqual(
            NullableJSONModel.objects.filter(value__j__isnull=True),
            self.objs[:4] + self.objs[5:],
        )
        self.assertCountEqual(
            NullableJSONModel.objects.filter(value__a__isnull=False),
            [self.objs[3], self.objs[4]],
        )
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__j__isnull=False),
            [self.objs[4]],
        )

    def test_isnull_key_or_none(self):
        obj = NullableJSONModel.objects.create(value={"a": None})
        self.assertCountEqual(
            NullableJSONModel.objects.filter(
                Q(value__a__isnull=True) | Q(value__a=None)
            ),
            self.objs[:3] + self.objs[5:] + [obj],
        )

    def test_none_key(self):
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__j=None),
            [self.objs[4]],
        )

    def test_none_key_exclude(self):
        obj = NullableJSONModel.objects.create(value={"j": 1})
        if connection.vendor == "oracle":
            # Oracle supports filtering JSON objects with NULL keys, but the
            # current implementation doesn't support it.
            self.assertSequenceEqual(
                NullableJSONModel.objects.exclude(value__j=None),
                self.objs[1:4] + self.objs[5:] + [obj],
            )
        else:
            self.assertSequenceEqual(
                NullableJSONModel.objects.exclude(value__j=None), [obj]
            )

    def test_shallow_list_lookup(self):
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__0=1),
            [self.objs[5]],
        )

    def test_shallow_obj_lookup(self):
        self.assertCountEqual(
            NullableJSONModel.objects.filter(value__a="b"),
            [self.objs[3], self.objs[4]],
        )

    def test_obj_subquery_lookup(self):
        qs = NullableJSONModel.objects.annotate(
            field=Subquery(
                NullableJSONModel.objects.filter(pk=OuterRef("pk")).values("value")
            ),
        ).filter(field__a="b")
        self.assertCountEqual(qs, [self.objs[3], self.objs[4]])

    def test_deep_lookup_objs(self):
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__k__l="m"),
            [self.objs[4]],
        )

    def test_shallow_lookup_obj_target(self):
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__k={"l": "m"}),
            [self.objs[4]],
        )

    def test_deep_lookup_array(self):
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__1__0=2),
            [self.objs[5]],
        )

    def test_deep_lookup_mixed(self):
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__d__1__f="g"),
            [self.objs[4]],
        )

    def test_deep_lookup_transform(self):
        self.assertCountEqual(
            NullableJSONModel.objects.filter(value__c__gt=2),
            [self.objs[3], self.objs[4]],
        )
        self.assertCountEqual(
            NullableJSONModel.objects.filter(value__c__gt=2.33),
            [self.objs[3], self.objs[4]],
        )
        self.assertIs(NullableJSONModel.objects.filter(value__c__lt=5).exists(), False)

    def test_lookup_exclude(self):
        tests = [
            (Q(value__a="b"), [self.objs[0]]),
            (Q(value__foo="bax"), [self.objs[0], self.objs[7]]),
        ]
        for condition, expected in tests:
            self.assertCountEqual(
                NullableJSONModel.objects.exclude(condition),
                expected,
            )
            self.assertCountEqual(
                NullableJSONModel.objects.filter(~condition),
                expected,
            )

    def test_lookup_exclude_nonexistent_key(self):
        # Values without the key are ignored.
        condition = Q(value__foo="bax")
        objs_with_value = [self.objs[6]]
        objs_with_different_value = [self.objs[0], self.objs[7]]
        self.assertCountEqual(
            NullableJSONModel.objects.exclude(condition),
            objs_with_different_value,
        )
        self.assertSequenceEqual(
            NullableJSONModel.objects.exclude(~condition),
            objs_with_value,
        )
        self.assertCountEqual(
            NullableJSONModel.objects.filter(condition | ~condition),
            objs_with_value + objs_with_different_value,
        )
        self.assertCountEqual(
            NullableJSONModel.objects.exclude(condition & ~condition),
            objs_with_value + objs_with_different_value,
        )
        # Add the __isnull lookup to get an exhaustive set.
        self.assertCountEqual(
            NullableJSONModel.objects.exclude(condition & Q(value__foo__isnull=False)),
            self.objs[0:6] + self.objs[7:],
        )
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(condition & Q(value__foo__isnull=False)),
            objs_with_value,
        )

    def test_usage_in_subquery(self):
        self.assertCountEqual(
            NullableJSONModel.objects.filter(
                id__in=NullableJSONModel.objects.filter(value__c=14),
            ),
            self.objs[3:5],
        )

    @skipUnlessDBFeature("supports_json_field_contains")
    def test_array_key_contains(self):
        tests = [
            ([], [self.objs[7]]),
            ("bar", [self.objs[7]]),
            (["bar"], [self.objs[7]]),
            ("ar", []),
        ]
        for value, expected in tests:
            with self.subTest(value=value):
                self.assertSequenceEqual(
                    NullableJSONModel.objects.filter(value__bar__contains=value),
                    expected,
                )

    def test_key_iexact(self):
        self.assertIs(
            NullableJSONModel.objects.filter(value__foo__iexact="BaR").exists(), True
        )
        self.assertIs(
            NullableJSONModel.objects.filter(value__foo__iexact='"BaR"').exists(), False
        )

    def test_key_in(self):
        tests = [
            ("value__c__in", [14], self.objs[3:5]),
            ("value__c__in", [14, 15], self.objs[3:5]),
            ("value__0__in", [1], [self.objs[5]]),
            ("value__0__in", [1, 3], [self.objs[5]]),
            ("value__foo__in", ["bar"], [self.objs[7]]),
            (
                "value__foo__in",
                [KeyTransform("foo", KeyTransform("bax", "value"))],
                [self.objs[7]],
            ),
            ("value__foo__in", [F("value__bax__foo")], [self.objs[7]]),
            (
                "value__foo__in",
                [KeyTransform("foo", KeyTransform("bax", "value")), "baz"],
                [self.objs[7]],
            ),
            ("value__foo__in", [F("value__bax__foo"), "baz"], [self.objs[7]]),
            ("value__foo__in", ["bar", "baz"], [self.objs[7]]),
            ("value__bar__in", [["foo", "bar"]], [self.objs[7]]),
            ("value__bar__in", [["foo", "bar"], ["a"]], [self.objs[7]]),
            ("value__bax__in", [{"foo": "bar"}, {"a": "b"}], [self.objs[7]]),
            ("value__h__in", [True, "foo"], [self.objs[4]]),
            ("value__i__in", [False, "foo"], [self.objs[4]]),
        ]
        for lookup, value, expected in tests:
            with self.subTest(lookup=lookup, value=value):
                self.assertCountEqual(
                    NullableJSONModel.objects.filter(**{lookup: value}),
                    expected,
                )

    def test_key_values(self):
        qs = NullableJSONModel.objects.filter(value__h=True)
        tests = [
            ("value__a", "b"),
            ("value__c", 14),
            ("value__d", ["e", {"f": "g"}]),
            ("value__h", True),
            ("value__i", False),
            ("value__j", None),
            ("value__k", {"l": "m"}),
            ("value__n", [None, True, False]),
            ("value__p", 4.2),
            ("value__r", {"s": True, "t": False}),
        ]
        for lookup, expected in tests:
            with self.subTest(lookup=lookup):
                self.assertEqual(qs.values_list(lookup, flat=True).get(), expected)

    def test_key_values_boolean(self):
        qs = NullableJSONModel.objects.filter(value__h=True, value__i=False)
        tests = [
            ("value__h", True),
            ("value__i", False),
        ]
        for lookup, expected in tests:
            with self.subTest(lookup=lookup):
                self.assertIs(qs.values_list(lookup, flat=True).get(), expected)

    @skipUnlessDBFeature("supports_json_field_contains")
    def test_key_contains(self):
        self.assertIs(
            NullableJSONModel.objects.filter(value__foo__contains="ar").exists(), False
        )
        self.assertIs(
            NullableJSONModel.objects.filter(value__foo__contains="bar").exists(), True
        )

    def test_key_icontains(self):
        self.assertIs(
            NullableJSONModel.objects.filter(value__foo__icontains="Ar").exists(), True
        )

    def test_key_startswith(self):
        self.assertIs(
            NullableJSONModel.objects.filter(value__foo__startswith="b").exists(), True
        )

    def test_key_istartswith(self):
        self.assertIs(
            NullableJSONModel.objects.filter(value__foo__istartswith="B").exists(), True
        )

    def test_key_endswith(self):
        self.assertIs(
            NullableJSONModel.objects.filter(value__foo__endswith="r").exists(), True
        )

    def test_key_iendswith(self):
        self.assertIs(
            NullableJSONModel.objects.filter(value__foo__iendswith="R").exists(), True
        )

    def test_key_regex(self):
        self.assertIs(
            NullableJSONModel.objects.filter(value__foo__regex=r"^bar$").exists(), True
        )

    def test_key_iregex(self):
        self.assertIs(
            NullableJSONModel.objects.filter(value__foo__iregex=r"^bAr$").exists(), True
        )

    def test_key_quoted_string(self):
        self.assertEqual(
            NullableJSONModel.objects.filter(value__o='"quoted"').get(),
            self.objs[4],
        )

    @skipUnlessDBFeature("has_json_operators")
    def test_key_sql_injection(self):
        with CaptureQueriesContext(connection) as queries:
            self.assertIs(
                NullableJSONModel.objects.filter(
                    **{
                        """value__test' = '"a"') OR 1 = 1 OR ('d""": "x",
                    }
                ).exists(),
                False,
            )
        self.assertIn(
            """."value" -> 'test'' = ''"a"'') OR 1 = 1 OR (''d') = '"x"'""",
            queries[0]["sql"],
        )

    @skipIfDBFeature("has_json_operators")
    def test_key_sql_injection_escape(self):
        query = str(
            JSONModel.objects.filter(
                **{
                    """value__test") = '"a"' OR 1 = 1 OR ("d""": "x",
                }
            ).query
        )
        self.assertIn('"test\\"', query)
        self.assertIn('\\"d', query)

    def test_key_escape(self):
        obj = NullableJSONModel.objects.create(value={"%total": 10})
        self.assertEqual(
            NullableJSONModel.objects.filter(**{"value__%total": 10}).get(), obj
        )

    def test_none_key_and_exact_lookup(self):
        self.assertSequenceEqual(
            NullableJSONModel.objects.filter(value__a="b", value__j=None),
            [self.objs[4]],
        )

    def test_lookups_with_key_transform(self):
        tests = (
            ("value__baz__has_key", "c"),
            ("value__baz__has_keys", ["a", "c"]),
            ("value__baz__has_any_keys", ["a", "x"]),
            ("value__has_key", KeyTextTransform("foo", "value")),
        )
        for lookup, value in tests:
            with self.subTest(lookup=lookup):
                self.assertIs(
                    NullableJSONModel.objects.filter(
                        **{lookup: value},
                    ).exists(),
                    True,
                )

    @skipUnlessDBFeature("supports_json_field_contains")
    def test_contains_contained_by_with_key_transform(self):
        tests = [
            ("value__d__contains", "e"),
            ("value__d__contains", [{"f": "g"}]),
            ("value__contains", KeyTransform("bax", "value")),
            ("value__contains", F("value__bax")),
            ("value__baz__contains", {"a": "b"}),
            ("value__baz__contained_by", {"a": "b", "c": "d", "e": "f"}),
            (
                "value__contained_by",
                KeyTransform(
                    "x",
                    RawSQL(
                        self.raw_sql,
                        ['{"x": {"a": "b", "c": 1, "d": "e"}}'],
                    ),
                ),
            ),
        ]
        # For databases where {'f': 'g'} (without surrounding []) matches
        # [{'f': 'g'}].
        if not connection.features.json_key_contains_list_matching_requires_list:
            tests.append(("value__d__contains", {"f": "g"}))
        for lookup, value in tests:
            with self.subTest(lookup=lookup, value=value):
                self.assertIs(
                    NullableJSONModel.objects.filter(
                        **{lookup: value},
                    ).exists(),
                    True,
                )

    def test_join_key_transform_annotation_expression(self):
        related_obj = RelatedJSONModel.objects.create(
            value={"d": ["f", "e"]},
            json_model=self.objs[4],
        )
        RelatedJSONModel.objects.create(
            value={"d": ["e", "f"]},
            json_model=self.objs[4],
        )
        self.assertSequenceEqual(
            RelatedJSONModel.objects.annotate(
                key=F("value__d"),
                related_key=F("json_model__value__d"),
                chain=F("key__1"),
                expr=Cast("key", models.JSONField()),
            ).filter(chain=F("related_key__0")),
            [related_obj],
        )

    def test_key_text_transform_from_lookup(self):
        qs = NullableJSONModel.objects.annotate(b=KT("value__bax__foo")).filter(
            b__contains="ar",
        )
        self.assertSequenceEqual(qs, [self.objs[7]])
        qs = NullableJSONModel.objects.annotate(c=KT("value__o")).filter(
            c__contains="uot",
        )
        self.assertSequenceEqual(qs, [self.objs[4]])

    def test_key_text_transform_from_lookup_invalid(self):
        msg = "Lookup must contain key or index transforms."
        with self.assertRaisesMessage(ValueError, msg):
            KT("value")
        with self.assertRaisesMessage(ValueError, msg):
            KT("")
