Change context behavior setting to enum

tests/test_settings.py

@@ -0,0 +1,20 @@
+from .django_test_setup import *  # NOQA
+from .testutils import Django30CompatibleSimpleTestCase as SimpleTestCase
+
+from django.conf import settings
+
+
+class ValidateWrongContextBehaviorValueTestCase(SimpleTestCase):
+    def setUp(self) -> None:
+        settings.COMPONENTS["context_behavior"] = "invalid_value"
+        return super().setUp()
+
+    def tearDown(self) -> None:
+        del settings.COMPONENTS["context_behavior"]
+        return super().tearDown()
+
+    def test_valid_context_behavior(self):
+        from django_components.app_settings import app_settings
+
+        with self.assertRaises(ValueError):
+            app_settings.CONTEXT_BEHAVIOR.value