Add some tests for ordered sets to verify that they are unique by slug & locale

home/tests/import-export-data/ordered_content_same_name.csv

@@ -0,0 +1,3 @@
+Name,Profile Fields,Page Slugs,Time,Unit,Before Or After,Contact Field,Slug,Locale
+Test Set,"gender:male, relationship:in_a_relationship","first_time_user, first_time_user, first_time_user","2, 3, 4","days, months, years","before, before, after",edd,Test_Set,en
+Test Set,"gender:male, relationship:in_a_relationship",first_time_user,2,days,before,edd,test_set_2,en

home/tests/import-export-data/ordered_content_same_slug.csv

@@ -0,0 +1,3 @@
+Name,Profile Fields,Page Slugs,Time,Unit,Before Or After,Contact Field,Slug,Locale
+Test Set,"gender:male, relationship:in_a_relationship","first_time_user, first_time_user, first_time_user","2, 3, 4","days, months, years","before, before, after",edd,Test_Set,en
+Test Set,"gender:male, relationship:in_a_relationship",first_time_user,2,days,before,edd,test_set,en

home/tests/test_content_import_export.py

@@ -1262,6 +1262,51 @@ def test_import_ordered_content_sets_incorrect_locale_error(
 
         assert e.value.message == ["Locale pt does not exist."]
 
+    def test_import_ordered_content_sets_duplicate_name(
+        self, csv_impexp: ImportExport
+    ) -> None:
+        """
+        Importing CSV for ordered content sets with a duplicate name but unique slugs
+        should not throw an error.
+        """
+        csv_impexp.import_file("contentpage_required_fields.csv")
+
+        content = csv_impexp.read_bytes("ordered_content_same_name.csv")
+        csv_impexp.import_ordered_sets(content)
+
+        ordered_sets = OrderedContentSet.objects.all()
+        assert len(ordered_sets) == 2
+
+    def test_import_ordered_content_sets_duplicate_slug(
+        self, csv_impexp: ImportExport
+    ) -> None:
+        """
+        Importing CSV for ordered content sets with a duplicate name but unique slugs
+        should not throw an error.
+        """
+        csv_impexp.import_file("contentpage_required_fields.csv")
+
+        content = csv_impexp.read_bytes("ordered_content_same_slug.csv")
+        csv_impexp.import_ordered_sets(content)
+
+        ordered_sets = OrderedContentSet.objects.all()
+        assert len(ordered_sets) == 1
+
+        ordered_set = ordered_sets[0]
+        assert ordered_set.name == "Test Set"
+        assert ordered_set.slug == "test_set"
+        assert ordered_set.locale.language_code == "en"
+        assert unwagtail(ordered_set.profile_fields) == [
+            ("gender", "male"),
+            ("relationship", "in_a_relationship"),
+        ]
+
+        pages = unwagtail(ordered_set.pages)
+        assert len(pages) == 1
+
+        page = pages[0][1]
+        assert page["contentpage"].slug == "first_time_user"
+
     def test_import_ordered_sets_csv(self, csv_impexp: ImportExport) -> None:
         """
         Importing a CSV file with ordered content sets should not break