tests: use https:// scheme in webtest client (#71943)

Adaptation to change in authentic settings (SESSION_COOKIE_SECURE=True).

tests/conftest.py

@@ -24,7 +24,7 @@ def app(request, db, settings, tmpdir):
     wtm._patch_settings()
     request.addfinalizer(wtm._unpatch_settings)
     settings.MEDIA_DIR = str(tmpdir.mkdir('media'))
-    return django_webtest.DjangoTestApp(extra_environ={'HTTP_HOST': 'localhost'})
+    return django_webtest.DjangoTestApp(extra_environ={'HTTP_HOST': 'localhost', 'wsgi.url_scheme': 'https'})
 
 
 @pytest.fixture(autouse=True)

tests/test_acl.py

@@ -175,7 +175,7 @@ def test_liege_service_admin(app, base):
                                 'csrfmiddlewaretoken': app.cookies['csrftoken'],
                                 'action': 'add',
                                 'role': base.role_service_liege.pk
-                            })
+                            }, headers={'Referer': 'https://localhost'})
 
     assert base.user_liege.roles.count() == 1
     assert base.user_liege.roles.get().name == 'Accès Service'