diff --git a/setup.cfg b/setup.cfg
index 3c516430..70daeadd 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -84,7 +84,7 @@ where = tests
 enable-extensions = G
 # E203 is due to https://github.com/PyCQA/pycodestyle/issues/373
 ignore =
-    A003,
+    A003,A005
     D,
     E203,E305,E704,E711,E712,E721,E722,E741,
     N801,N802,N806,
diff --git a/tests/test_autogen_diffs.py b/tests/test_autogen_diffs.py
index b0490f9e..174cfac5 100644
--- a/tests/test_autogen_diffs.py
+++ b/tests/test_autogen_diffs.py
@@ -55,6 +55,7 @@
 from alembic.testing.suite._autogen_fixtures import _default_object_filters
 from alembic.testing.suite._autogen_fixtures import AutogenFixtureTest
 from alembic.testing.suite._autogen_fixtures import AutogenTest
+from alembic.testing.suite._autogen_fixtures import ModelOne
 from alembic.util import CommandError
 
 # TODO: we should make an adaptation of CompareMetadataToInspectorTest that is
@@ -315,104 +316,6 @@ def _include_object(obj, name, type_, reflected, compare_to):
         eq_(len(diffs), 0)
 
 
-class ModelOne:
-    __requires__ = ("unique_constraint_reflection",)
-
-    schema = None
-
-    @classmethod
-    def _get_db_schema(cls):
-        schema = cls.schema
-
-        m = MetaData(schema=schema)
-
-        Table(
-            "user",
-            m,
-            Column("id", Integer, primary_key=True),
-            Column("name", String(50)),
-            Column("a1", Text),
-            Column("pw", String(50)),
-            Index("pw_idx", "pw"),
-        )
-
-        Table(
-            "address",
-            m,
-            Column("id", Integer, primary_key=True),
-            Column("email_address", String(100), nullable=False),
-        )
-
-        Table(
-            "order",
-            m,
-            Column("order_id", Integer, primary_key=True),
-            Column(
-                "amount",
-                Numeric(8, 2),
-                nullable=False,
-                server_default=text("0"),
-            ),
-            CheckConstraint("amount >= 0", name="ck_order_amount"),
-        )
-
-        Table(
-            "extra",
-            m,
-            Column("x", CHAR),
-            Column("uid", Integer, ForeignKey("user.id")),
-        )
-
-        return m
-
-    @classmethod
-    def _get_model_schema(cls):
-        schema = cls.schema
-
-        m = MetaData(schema=schema)
-
-        Table(
-            "user",
-            m,
-            Column("id", Integer, primary_key=True),
-            Column("name", String(50), nullable=False),
-            Column("a1", Text, server_default="x"),
-        )
-
-        Table(
-            "address",
-            m,
-            Column("id", Integer, primary_key=True),
-            Column("email_address", String(100), nullable=False),
-            Column("street", String(50)),
-            UniqueConstraint("email_address", name="uq_email"),
-        )
-
-        Table(
-            "order",
-            m,
-            Column("order_id", Integer, primary_key=True),
-            Column(
-                "amount",
-                Numeric(10, 2),
-                nullable=True,
-                server_default=text("0"),
-            ),
-            Column("user_id", Integer, ForeignKey("user.id")),
-            CheckConstraint("amount > -1", name="ck_order_amount"),
-        )
-
-        Table(
-            "item",
-            m,
-            Column("id", Integer, primary_key=True),
-            Column("description", String(100)),
-            Column("order_id", Integer, ForeignKey("order.order_id")),
-            CheckConstraint("len(description) > 5"),
-        )
-        return m
-
-
 class AutogenerateDiffTest(ModelOne, AutogenTest, TestBase):
     __only_on__ = "sqlite"