Allowed overriding Role provided initkwargs in as_view(). (#58)

* Merge role default and provided initkwargs, allowing overidding by
providing duplicates.
* Ensure provided initkwargs override role defaults.

src/neapolitan/views.py

@@ -6,7 +6,7 @@
 from django.http import Http404, HttpResponseRedirect
 from django.shortcuts import get_object_or_404
 from django.template.response import TemplateResponse
-from django.urls import path, reverse, NoReverseMatch
+from django.urls import NoReverseMatch, path, reverse
 from django.utils.decorators import classonlymethod
 from django.utils.functional import classproperty
 from django.utils.translation import gettext as _
@@ -456,7 +456,8 @@ def as_view(cls, role: Role, **initkwargs):
                 )
 
         def view(request, *args, **kwargs):
-            self = cls(**initkwargs, **role.extra_initkwargs())
+            # Merge Role default and provided initkwargs.
+            self = cls(**{**role.extra_initkwargs(), **initkwargs})
             self.role = role
             self.setup(request, *args, **kwargs)
             if not hasattr(self, "request"):

tests/tests.py

@@ -1,9 +1,11 @@
 import os
 
 from django.core.management import call_command
-from django.test import TestCase
+from django.http import HttpResponse
+from django.test import RequestFactory, TestCase
 from django.urls import reverse
 from django.utils.html import escape
+
 from neapolitan.views import CRUDView, Role, classonlymethod
 
 from .models import Bookmark, NamedCollection
@@ -175,6 +177,23 @@ def test_lookup_url_converter(self):
         self.assertEqual(response.status_code, 200)
         self.assertContains(response, self.main_collection.name)
 
+    def test_overriding_role_initkwargs(self):
+        """as_view must proritise initkwargs over Role extra_initkwargs."""
+
+        class InitKwargsCRUDView(CRUDView):
+            model = Bookmark
+
+            def detail(self, request, *args, **kwargs):
+                return HttpResponse(self.template_name_suffix)
+
+        view = InitKwargsCRUDView.as_view(
+            role=Role.DETAIL,
+            template_name_suffix='_test_suffix'
+        )
+        request = RequestFactory().get('/')
+        response = view(request)
+        self.assertContains(response, '_test_suffix')
+
 
 class RoleTests(TestCase):
     def test_overriding_url_base(self):