diff --git a/conntrackt/tests/forms.py b/conntrackt/tests/forms.py
new file mode 100644
--- /dev/null
+++ b/conntrackt/tests/forms.py
@@ -0,0 +1,20 @@
+# Django imports
+from django import forms
+
+# Application imports.
+from conntrackt.forms import WidgetCSSClassFormMixin, PlaceholderFormMixin
+
+
+class FormWithWidgetCSSClassFormMixin(WidgetCSSClassFormMixin, forms.Form):
+    """
+    Helper form for testing the WidgetCSSClassFormMixin.
+    """
+
+    field1 = forms.CharField()
+    field2 = forms.CharField()
+
+
+class FormWithPlaceholderFormMixin(PlaceholderFormMixin, forms.Form):
+
+    field1 = forms.CharField()
+    field2 = forms.CharField()