diff --git a/test/unit/data/model/test_model_mapping.py b/test/unit/data/model/test_model_mapping.py
index 2c72dd32583..543ea273a78 100644
--- a/test/unit/data/model/test_model_mapping.py
+++ b/test/unit/data/model/test_model_mapping.py
@@ -527,8 +527,8 @@ class TestDataset(BaseTest):
             assert stored_obj.hashes == [dataset_hash]
             assert stored_obj.sources == [dataset_source]
             assert stored_obj.library_associations == [library_dataset_dataset_association]
-            assert are_same_entity_collections(
-                stored_obj.history_associations, [hda, history_dataset_association])
+            assert collection_consists_of_objects(
+                stored_obj.history_associations, hda, history_dataset_association)
 
         delete_from_database(session, hda)
 
@@ -4355,8 +4355,8 @@ class TestStoredWorkflow(BaseTest):
             assert stored_obj.ratings == [stored_workflow_rating_association]
             # This doesn't test the average amount, just the mapping.
             assert stored_obj.average_rating == stored_workflow_rating_association.rating
-            assert are_same_entity_collections(
-                stored_obj.tags, [stored_workflow_tag_association, tag_assoc2])
+            assert collection_consists_of_objects(
+                stored_obj.tags, stored_workflow_tag_association, tag_assoc2)
             assert stored_obj.owner_tags == [tag_assoc2]
             assert stored_obj.users_shared_with == [stored_workflow_user_share_association]
 
@@ -4822,7 +4822,7 @@ class TestUser(BaseTest):
             assert stored_obj.custos_auth == [custos_authnz_token]
             assert stored_obj.default_permissions == [default_user_permissions]
             assert stored_obj.groups == [user_group_association]
-            assert are_same_entity_collections(stored_obj.histories, [history1, history2])
+            assert collection_consists_of_objects(stored_obj.histories, history1, history2)
             assert stored_obj.active_histories == [history1]
             assert stored_obj.galaxy_sessions == [galaxy_session]
             assert stored_obj.quotas == [user_quota_association]
@@ -4831,7 +4831,7 @@ class TestUser(BaseTest):
             assert user_preference in stored_obj._preferences.values()
             assert stored_obj.api_keys == [api_keys]
             assert stored_obj.data_manager_histories == [data_manager_history_association]
-            assert are_same_entity_collections(stored_obj.roles, [private_user_role, non_private_user_role])
+            assert collection_consists_of_objects(stored_obj.roles, private_user_role, non_private_user_role)
             assert stored_obj.non_private_roles == [non_private_user_role]
             assert stored_obj.stored_workflows == [stored_workflow]
 
@@ -7483,26 +7483,6 @@ def get_unique_value():
     return uuid4().hex
 
 
-def are_same_entity_collections(collection1, collection2):
-    """
-    The 2 arguments are collections of instances of models that have an `id`
-    attribute as their primary key.
-    Returns `True` if collections are the same size and contain the same
-    instances. Instance equality is determined by the object's `id` attribute,
-    not its Python object identifier.
-    """
-    if len(collection1) != len(collection2):
-        return False
-
-    collection1.sort(key=lambda item: item.id)
-    collection2.sort(key=lambda item: item.id)
-
-    for item1, item2 in zip(collection1, collection2):
-        if item1.id != item2.id:
-            return False
-    return True
-
-
 def collection_consists_of_objects(collection, *objects):
     """
     Returns True iff list(collection) == list(objects), where object equality is determined
diff --git a/test/unit/data/model/test_test_mapping.py b/test/unit/data/model/test_test_mapping.py
index b9975ac0435..f64a3d5c1f0 100644
--- a/test/unit/data/model/test_test_mapping.py
+++ b/test/unit/data/model/test_test_mapping.py
@@ -18,7 +18,6 @@ from sqlalchemy.orm import registry, Session
 
 from galaxy.model import _HasTable
 from . test_model_mapping import (
-    are_same_entity_collections,
     collection_consists_of_objects,
     dbcleanup,
     dbcleanup_wrapper,
@@ -163,26 +162,6 @@ def test_has_unique_constraint(session):
     assert not has_unique_constraint(Foo.__table__, ('field1',))
 
 
-def test_are_same_entity_collections(session):
-    foo1 = Foo()
-    foo2 = Foo()
-    foo3 = Foo()
-    persist(session, foo1)
-    persist(session, foo2)
-    persist(session, foo3)
-
-    stored_foo1 = _get_stored_instance_by_id(session, Foo, foo1.id)
-    stored_foo2 = _get_stored_instance_by_id(session, Foo, foo2.id)
-    stored_foo3 = _get_stored_instance_by_id(session, Foo, foo3.id)
-
-    expected = [foo1, foo2]
-
-    assert are_same_entity_collections([stored_foo1, stored_foo2], expected)
-    assert are_same_entity_collections([stored_foo2, stored_foo1], expected)
-    assert not are_same_entity_collections([stored_foo1, stored_foo3], expected)
-    assert not are_same_entity_collections([stored_foo1, stored_foo1, stored_foo2], expected)
-
-
 def test_collection_consists_of_objects(session):
     # create objects
     foo1 = Foo()