diff --git a/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestAuthorDao.kt b/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestAuthorDao.kt
index 5cdfb6be3..a740f4a4e 100644
--- a/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestAuthorDao.kt
+++ b/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestAuthorDao.kt
@@ -58,7 +58,7 @@ class TestAuthorDao : AuthorDao {
     }
 
     override suspend fun upsertAuthors(entities: List<AuthorEntity>) {
-        TODO("Not yet implemented")
+        entitiesStateFlow.value = entities
     }
 
     override suspend fun deleteAuthors(ids: List<String>) {
diff --git a/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestNewsResourceDao.kt b/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestNewsResourceDao.kt
index d5c0044f3..a91c0fc87 100644
--- a/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestNewsResourceDao.kt
+++ b/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestNewsResourceDao.kt
@@ -86,7 +86,7 @@ class TestNewsResourceDao : NewsResourceDao {
     }
 
     override suspend fun upsertNewsResources(newsResourceEntities: List<NewsResourceEntity>) {
-        TODO("Not yet implemented")
+        entitiesStateFlow.value = newsResourceEntities
     }
 
     override suspend fun insertOrIgnoreTopicCrossRefEntities(
diff --git a/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestTopicDao.kt b/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestTopicDao.kt
index 7f2efffc5..50910ddd2 100644
--- a/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestTopicDao.kt
+++ b/core/data/src/test/java/com/google/samples/apps/nowinandroid/core/data/testdoubles/TestTopicDao.kt
@@ -63,7 +63,7 @@ class TestTopicDao : TopicDao {
     }
 
     override suspend fun upsertTopics(entities: List<TopicEntity>) {
-        TODO("Not yet implemented")
+        entitiesStateFlow.value = entities
     }
 
     override suspend fun deleteTopics(ids: List<String>) {