# Path: psqlextra/fields/hstore_field.py
# class HStoreField(DjangoHStoreField):
#     """Improved version of Django's :see:HStoreField that adds support for
#     database-level constraints.
# 
#     Notes:
#         - For the implementation of uniqueness, see the
#           custom database back-end.
#     """
# 
#     def __init__(
#         self,
#         *args,
#         uniqueness: Optional[List[Union[str, Tuple[str, ...]]]] = None,
#         required: Optional[List[str]] = None,
#         **kwargs
#     ):
#         """Initializes a new instance of :see:HStoreField.
# 
#         Arguments:
#             uniqueness:
#                 List of keys to enforce as unique. Use tuples
#                 to enforce multiple keys together to be unique.
# 
#             required:
#                 List of keys that should be enforced as required.
#         """
# 
#         super(HStoreField, self).__init__(*args, **kwargs)
# 
#         self.uniqueness = uniqueness
#         self.required = required
# 
#     def get_prep_value(self, value):
#         """Override the base class so it doesn't cast all values to strings.
# 
#         psqlextra supports expressions in hstore fields, so casting all
#         values to strings is a bad idea.
#         """
# 
#         value = Field.get_prep_value(self, value)
# 
#         if isinstance(value, dict):
#             prep_value = {}
#             for key, val in value.items():
#                 if isinstance(val, Expression):
#                     prep_value[key] = val
#                 elif val is not None:
#                     prep_value[key] = str(val)
#                 else:
#                     prep_value[key] = val
# 
#             value = prep_value
# 
#         if isinstance(value, list):
#             value = [str(item) for item in value]
# 
#         return value
# 
#     def deconstruct(self):
#         """Gets the values to pass to :see:__init__ when re-creating this
#         object."""
# 
#         name, path, args, kwargs = super(HStoreField, self).deconstruct()
# 
#         if self.uniqueness is not None:
#             kwargs["uniqueness"] = self.uniqueness
# 
#         if self.required is not None:
#             kwargs["required"] = self.required
# 
#         return name, path, args, kwargs


from django.db import migrations
from django.db.migrations.autodetector import MigrationAutodetector
from django.db.migrations.state import ProjectState
from psqlextra.fields import HStoreField
            _,
            expected_args,
            expected_kwargs,
        ) = expected_operation.field.deconstruct()

        assert real_args == expected_args
        assert real_kwargs == expected_kwargs


def test_hstore_autodetect_uniqueness():
    """Tests whether changes in the `uniqueness` option are properly detected
    by the auto detector."""

    before = [
        migrations.state.ModelState(
            "tests", "Model1", [("title", HStoreField())]
        )
    ]
    after = [
        migrations.state.ModelState(
            "tests", "Model1", [("title", HStoreField(uniqueness=["en"]))]
        )
    ]

    changes = _detect_changes(before, after)

    _assert_autodetector(
        changes,
        [
            migrations.AlterField(

# Path: psqlextra/fields/hstore_field.py
# class HStoreField(DjangoHStoreField):
#     """Improved version of Django's :see:HStoreField that adds support for
#     database-level constraints.
# 
#     Notes:
#         - For the implementation of uniqueness, see the
#           custom database back-end.
#     """
# 
#     def __init__(
#         self,
#         *args,
#         uniqueness: Optional[List[Union[str, Tuple[str, ...]]]] = None,
#         required: Optional[List[str]] = None,
#         **kwargs
#     ):
#         """Initializes a new instance of :see:HStoreField.
# 
#         Arguments:
#             uniqueness:
#                 List of keys to enforce as unique. Use tuples
#                 to enforce multiple keys together to be unique.
# 
#             required:
#                 List of keys that should be enforced as required.
#         """
# 
#         super(HStoreField, self).__init__(*args, **kwargs)
# 
#         self.uniqueness = uniqueness
#         self.required = required
# 
#     def get_prep_value(self, value):
#         """Override the base class so it doesn't cast all values to strings.
# 
#         psqlextra supports expressions in hstore fields, so casting all
#         values to strings is a bad idea.
#         """
# 
#         value = Field.get_prep_value(self, value)
# 
#         if isinstance(value, dict):
#             prep_value = {}
#             for key, val in value.items():
#                 if isinstance(val, Expression):
#                     prep_value[key] = val
#                 elif val is not None:
#                     prep_value[key] = str(val)
#                 else:
#                     prep_value[key] = val
# 
#             value = prep_value
# 
#         if isinstance(value, list):
#             value = [str(item) for item in value]
# 
#         return value
# 
#     def deconstruct(self):
#         """Gets the values to pass to :see:__init__ when re-creating this
#         object."""
# 
#         name, path, args, kwargs = super(HStoreField, self).deconstruct()
# 
#         if self.uniqueness is not None:
#             kwargs["uniqueness"] = self.uniqueness
# 
#         if self.required is not None:
#             kwargs["required"] = self.required
# 
#         return name, path, args, kwargs


# Path: tests/test_hstore_autodetect.py
from django.db import migrations
from django.db.migrations.autodetector import MigrationAutodetector
from django.db.migrations.state import ProjectState
from psqlextra.fields import HStoreField

            _,
            expected_args,
            expected_kwargs,
        ) = expected_operation.field.deconstruct()

        assert real_args == expected_args
        assert real_kwargs == expected_kwargs


def test_hstore_autodetect_uniqueness():
    """Tests whether changes in the `uniqueness` option are properly detected
    by the auto detector."""

    before = [
        migrations.state.ModelState(
            "tests", "Model1", [("title", HStoreField())]
        )
    ]
    after = [
        migrations.state.ModelState(
            "tests", "Model1", [("title", HStoreField(uniqueness=["en"]))]
        )
    ]

    changes = _detect_changes(before, after)

    _assert_autodetector(
        changes,
        [
            migrations.AlterField(

                "Model1", "title", HStoreField(uniqueness=["en"])