From e24675e5b7ebba7528760638aa819b23ae20bf43 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=9Clgen=20Sar=C4=B1kavak?=
 <ulgens@users.noreply.github.com>
Date: Sun, 10 Jan 2021 06:16:18 +0300
Subject: [PATCH] Fix backward compability on GraphQLTestCase._client setter
 (#1093)

---
 graphene_django/utils/testing.py            | 13 +++++++++++
 graphene_django/utils/tests/test_testing.py | 25 +++++++++++++++++++--
 2 files changed, 36 insertions(+), 2 deletions(-)

diff --git a/graphene_django/utils/testing.py b/graphene_django/utils/testing.py
index b758ac8c7..afe83c2e8 100644
--- a/graphene_django/utils/testing.py
+++ b/graphene_django/utils/testing.py
@@ -99,6 +99,10 @@ def query(self, query, op_name=None, input_data=None, variables=None, headers=No
         )
 
     @property
+    def _client(self):
+        pass
+
+    @_client.getter
     def _client(self):
         warnings.warn(
             "Using `_client` is deprecated in favour of `client`.",
@@ -107,6 +111,15 @@ def _client(self):
         )
         return self.client
 
+    @_client.setter
+    def _client(self, client):
+        warnings.warn(
+            "Using `_client` is deprecated in favour of `client`.",
+            PendingDeprecationWarning,
+            stacklevel=2,
+        )
+        self.client = client
+
     def assertResponseNoErrors(self, resp, msg=None):
         """
         Assert that the call went through correctly. 200 means the syntax is ok, if there are no `errors`,
diff --git a/graphene_django/utils/tests/test_testing.py b/graphene_django/utils/tests/test_testing.py
index df7832130..2ef78f99b 100644
--- a/graphene_django/utils/tests/test_testing.py
+++ b/graphene_django/utils/tests/test_testing.py
@@ -2,12 +2,13 @@
 
 from .. import GraphQLTestCase
 from ...tests.test_types import with_local_registry
+from django.test import Client
 
 
 @with_local_registry
-def test_graphql_test_case_deprecated_client():
+def test_graphql_test_case_deprecated_client_getter():
     """
-    Test that `GraphQLTestCase._client`'s should raise pending deprecation warning.
+    `GraphQLTestCase._client`' getter should raise pending deprecation warning.
     """
 
     class TestClass(GraphQLTestCase):
@@ -22,3 +23,23 @@ def runTest(self):
 
     with pytest.warns(PendingDeprecationWarning):
         tc._client
+
+
+@with_local_registry
+def test_graphql_test_case_deprecated_client_setter():
+    """
+    `GraphQLTestCase._client`' setter should raise pending deprecation warning.
+    """
+
+    class TestClass(GraphQLTestCase):
+        GRAPHQL_SCHEMA = True
+
+        def runTest(self):
+            pass
+
+    tc = TestClass()
+    tc._pre_setup()
+    tc.setUpClass()
+
+    with pytest.warns(PendingDeprecationWarning):
+        tc._client = Client()