diff --git a/tests/tests_manifests_workflow/test_input_manifests.py b/tests/tests_manifests_workflow/test_input_manifests.py
index be5aad53fa..18c9a50abe 100644
--- a/tests/tests_manifests_workflow/test_input_manifests.py
+++ b/tests/tests_manifests_workflow/test_input_manifests.py
@@ -10,6 +10,7 @@
 from unittest.mock import MagicMock, call, mock_open, patch
 
 from manifests.input_manifest import InputManifest
+from manifests.test_manifest import TestManifest
 from manifests_workflow.input_manifests import InputManifests
 
 
@@ -119,15 +120,24 @@ def test_create_manifest_opensearch_dashboards_previous_base_version(self) -> No
         input_manifest_compare = InputManifest.from_file(open(manifest_path))
         self.assertEqual(input_manifest.to_dict(), input_manifest_compare.to_dict())
 
+    @patch("manifests.manifest.Manifest.to_file")
     @patch("os.makedirs")
     @patch("manifests_workflow.input_manifests.InputManifests.create_manifest")
-    def test_write_manifest(self, mock_create_manifest: MagicMock, mock_makedirs: MagicMock) -> None:
+    def test_write_manifest(self, mock_create_manifest: MagicMock, mock_makedirs: MagicMock, mock_to_file: MagicMock) -> None:
+        input_manifest = InputManifest.from_file(open(os.path.join(os.path.dirname(__file__), "data", "opensearch-2.12.1000.yml")))
+        test_manifest = TestManifest.from_file(open(os.path.join(os.path.dirname(__file__), "data", "opensearch-2.12.1000-test.yml")))
+        mock_create_manifest.return_value = (input_manifest, test_manifest)
         input_manifests = InputManifests("opensearch")
-        input_manifests.write_manifest('0.1.2', '0.x', [])
-        mock_create_manifest.assert_called_with('0.1.2', '0.x', [])
-        mock_makedirs.assert_called_with(os.path.join(InputManifests.manifests_path(), '0.1.2'), exist_ok=True)
-        mock_create_manifest.return_value.to_file.assert_called_with(
-            os.path.join(InputManifests.manifests_path(), '0.1.2', 'opensearch-0.1.2.yml')
+        input_manifests.write_manifest('2.12.1000', '2.x', [])
+        mock_create_manifest.assert_called_with('2.12.1000', '2.x', [])
+        mock_makedirs.assert_called_with(os.path.join(InputManifests.manifests_path(), '2.12.1000'), exist_ok=True)
+        self.assertEqual(
+            mock_to_file.call_args_list[0][0][0],
+            os.path.realpath(os.path.join(os.path.dirname(__file__), "..", "..", "manifests", "2.12.1000", "opensearch-2.12.1000.yml"))
+        )
+        self.assertEqual(
+            mock_to_file.call_args_list[1][0][0],
+            os.path.realpath(os.path.join(os.path.dirname(__file__), "..", "..", "manifests", "2.12.1000", "opensearch-2.12.1000-test.yml"))
         )
 
     def test_jenkins_path(self) -> None: