2 files changed, 11 insertions, 2 deletions
diff --git a/tests/regressiontests/generic_views/edit.py b/tests/regressiontests/generic_views/edit.py
index 2bd982e3d9..651e14fff3 100644
--- a/tests/regressiontests/generic_views/edit.py
+++ b/tests/regressiontests/generic_views/edit.py
@@ -5,11 +5,20 @@ from django.core.urlresolvers import reverse
 from django import forms
 from django.test import TestCase
 from django.utils.unittest import expectedFailure
+from django.views.generic.edit import FormMixin
 
 from . import views
 from .models import Artist, Author
 
 
+class FormMixinTests(TestCase):
+     def test_initial_data(self):
+         """ Test instance independence of initial data dict (see #16138) """
+         initial_1 = FormMixin().get_initial()
+         initial_1['foo'] = 'bar'
+         initial_2 = FormMixin().get_initial()
+         self.assertNotEqual(initial_1, initial_2)
+
 class ModelFormMixinTests(TestCase):
     def test_get_form(self):
         form_class = views.AuthorGetQuerySetFormView().get_form_class()
diff --git a/tests/regressiontests/generic_views/tests.py b/tests/regressiontests/generic_views/tests.py
index d387216d41..72aab035a8 100644
--- a/tests/regressiontests/generic_views/tests.py
+++ b/tests/regressiontests/generic_views/tests.py
@@ -5,6 +5,6 @@ from .dates import (ArchiveIndexViewTests, YearArchiveViewTests,
     MonthArchiveViewTests, WeekArchiveViewTests, DayArchiveViewTests,
     DateDetailViewTests)
 from .detail import DetailViewTest
-from .edit import (ModelFormMixinTests, CreateViewTests, UpdateViewTests,
-    DeleteViewTests)
+from .edit import (FormMixinTests, ModelFormMixinTests, CreateViewTests,
+    UpdateViewTests, DeleteViewTests)
 from .list import ListViewTests