Added API endpoint for listing public instance settings

api/tests/instance/test_preferences.py

@@ -0,0 +1,22 @@
+from django.urls import reverse
+
+from dynamic_preferences.api import serializers
+
+
+def test_can_list_settings_via_api(preferences, api_client):
+    url = reverse('api:v1:instance:settings')
+    all_preferences = preferences.model.objects.all()
+    expected_preferences = {
+        p.preference.identifier(): p
+        for p in all_preferences
+        if getattr(p.preference, 'show_in_api', False)}
+
+    assert len(expected_preferences) > 0
+
+    response = api_client.get(url)
+    assert response.status_code == 200
+    assert len(response.data) == len(expected_preferences)
+
+    for p in response.data:
+        i = '__'.join([p['section'], p['name']])
+        assert i in expected_preferences