diff --git a/core/src/test/kotlin/com/insanusmokrassar/postssystem/core/api/InMemoryPostsAPI.kt b/core/src/test/kotlin/com/insanusmokrassar/postssystem/core/api/InMemoryPostsAPI.kt
index c136f86a..a6c7baac 100644
--- a/core/src/test/kotlin/com/insanusmokrassar/postssystem/core/api/InMemoryPostsAPI.kt
+++ b/core/src/test/kotlin/com/insanusmokrassar/postssystem/core/api/InMemoryPostsAPI.kt
@@ -25,7 +25,7 @@ class InMemoryPostsAPI(
         post.content.any { it.id == id }
     }
     override suspend fun getPostsByDates(from: DateTime?, to: DateTime?): List<RegisteredPost> = posts.values.filter {
-        from ?.let { _ -> it.creationDate > from } ?: true && to ?.let { _ -> it.creationDate < to } ?: true
+        from ?.let { _ -> it.creationDate >= from } ?: true && to ?.let { _ -> it.creationDate <= to } ?: true
     }
     override suspend fun getPostsByPagination(
         pagination: Pagination
@@ -39,6 +39,4 @@ class InMemoryPostsAPI(
             it
         )
     }
-
-
 }