Add tests for registry

tests/test_form_registry.py

@@ -0,0 +1,43 @@
+from django import forms
+from django.test import TestCase
+
+from djangocms_form_builder.forms import FormsForm
+
+
+class MyTestForm(forms.Form):
+    field = forms.TextInput()
+
+
+class NamedForm(MyTestForm):
+    class Meta:
+        verbose_name = "This form has a custom name"
+
+
+class TestRegistry(TestCase):
+    def test_registry(self):
+        from djangocms_form_builder import (
+            get_registered_forms,
+            register_with_form_builder,
+        )
+
+        registered_forms = get_registered_forms()
+        # no forms registered yet
+        self.assertEqual(registered_forms[0][0], "No forms registered")
+        forms_form = FormsForm()
+        # No forms to select: hide field in form plugin admin form
+        self.assertIsInstance(forms_form.fields["form_selection"].widget, forms.HiddenInput)
+
+        register_with_form_builder(MyTestForm)
+
+        registered_forms = get_registered_forms()
+        self.assertEqual(len(registered_forms), 1)  # one form
+        self.assertEqual(registered_forms[0][1], "My Test Form")  # derived from the class name
+        forms_form = FormsForm()
+        # Form registered: Select widget in form plugin admin form
+        self.assertIsInstance(forms_form.fields["form_selection"].widget, forms.Select)
+
+        register_with_form_builder(NamedForm)
+
+        registered_forms = get_registered_forms()
+        self.assertEqual(len(registered_forms), 2)  # second form
+        self.assertEqual(registered_forms[1][1], "This form has a custom name")  # attribute-driven