remove customer manager again for now

tests/unit/test_models.py

@@ -5,7 +5,9 @@ import datetime
 import pytest
 
 from tests.factories.segment import SegmentFactory
+from tests.factories.page import ContentPageFactory
 from wagtail_personalisation.rules import TimeRule
+from tests.site.pages import models
 
 
 @pytest.mark.django_db
@@ -25,3 +27,10 @@ def test_metadata_page_has_variants(segmented_page):
     canonical = segmented_page.personalisation_metadata.canonical_page
     assert canonical.personalisation_metadata.is_canonical
     assert canonical.personalisation_metadata.has_variants
+
+
+@pytest.mark.django_db
+def test_content_page_model():
+    page = ContentPageFactory()
+    qs = models.ContentPage.objects.all()
+    assert page in qs