Test fixes

tests/core/test_scripts.py

@@ -1832,6 +1832,7 @@ def test_no_presentation_ready_works(
     ):
         # This work is not presentation-ready.
         work = db.work(with_license_pool=True)
+        end_to_end_search_fixture.external_search_index.initialize_indices()
         work.presentation_ready = False
         script = MockWhereAreMyBooks(
             _db=db.session, search=end_to_end_search_fixture.external_search_index
@@ -1850,6 +1851,7 @@ def test_no_delivery_mechanisms(
     ):
         # This work has a license pool, but no delivery mechanisms.
         work = db.work(with_license_pool=True)
+        end_to_end_search_fixture.external_search_index.initialize_indices()
         for lpdm in work.license_pools[0].delivery_mechanisms:
             db.session.delete(lpdm)
         self.check_explanation(
@@ -1865,6 +1867,7 @@ def test_suppressed_pool(
     ):
         # This work has a license pool, but it's suppressed.
         work = db.work(with_license_pool=True)
+        end_to_end_search_fixture.external_search_index.initialize_indices()
         work.license_pools[0].suppressed = True
         self.check_explanation(
             suppressed=1,
@@ -1879,6 +1882,7 @@ def test_no_licenses(
     ):
         # This work has a license pool, but no licenses owned.
         work = db.work(with_license_pool=True)
+        end_to_end_search_fixture.external_search_index.initialize_indices()
         work.license_pools[0].licenses_owned = 0
         self.check_explanation(
             not_owned=1,