Moved make_hashable() to django.utils and added tests.

2 files changed, 10 insertions, 10 deletions

diff --git a/django/db/models/expressions.py b/django/db/models/expressions.py
index 2bf6316c2e..b21a3b7526 100644
--- a/django/db/models/expressions.py
+++ b/django/db/models/expressions.py
@@ -9,6 +9,7 @@ from django.db.models import fields
 from django.db.models.query_utils import Q
 from django.utils.deconstruct import deconstructible
 from django.utils.functional import cached_property
+from django.utils.hashable import make_hashable
 
 
 class SQLiteNumericMixin:
@@ -138,16 +139,6 @@ class Combinable:
         )
 
 
-def make_hashable(value):
-    if isinstance(value, list):
-        return tuple(map(make_hashable, value))
-    if isinstance(value, dict):
-        return tuple([
-            (key, make_hashable(nested_value)) for key, nested_value in value.items()
-        ])
-    return value
-
-
 @deconstructible
 class BaseExpression:
     """Base class for all query expressions."""
diff --git a/django/utils/hashable.py b/django/utils/hashable.py
new file mode 100644
index 0000000000..859ea8073e
--- /dev/null
+++ b/django/utils/hashable.py
@@ -0,0 +1,9 @@
+def make_hashable(value):
+    if isinstance(value, list):
+        return tuple(map(make_hashable, value))
+    if isinstance(value, dict):
+        return tuple([
+            (key, make_hashable(nested_value))
+            for key, nested_value in value.items()
+        ])
+    return value