diff --git a/ecs/crm-datafetch/tests/aws/test_s3.py b/ecs/crm-datafetch/tests/aws/test_s3.py
index f341cd2c..db4f1c09 100644
--- a/ecs/crm-datafetch/tests/aws/test_s3.py
+++ b/ecs/crm-datafetch/tests/aws/test_s3.py
@@ -1,5 +1,7 @@
 import pytest
-from src.aws.s3 import S3Resource
+from src.aws.s3 import ConfigBucket, S3Resource
+from src.system_var import environments
+from src.system_var.constants import OBJECT_INFO_FILENAME, OBJECT_INFO_FOLDER
 
 
 @pytest.fixture
@@ -40,3 +42,18 @@ class TestS3Resource:
         with pytest.raises(Exception) as e:
             S3Resource()
         assert e.value.args[0] == "__init__() missing 1 required positional argument: 'bucket_name'"
+
+
+class TestConfigBucket:
+
+    def test_get_object_info_file(self, s3_test, s3_client, bucket_name, monkeypatch):
+        # = bucket_name
+        monkeypatch.setattr('src.aws.s3.CRM_CONFIG_BUCKET', bucket_name)
+        monkeypatch.setattr('src.aws.s3.OBJECT_INFO_FOLDER', 'crm')
+        monkeypatch.setattr('src.aws.s3.OBJECT_INFO_FILENAME', 'objects.json')
+        s3_client.put_object(Bucket=bucket_name, Key=f'crm/objects.json', Body=b'aaaaaaaaaaaaaaa')
+        config_bucket = ConfigBucket()
+        print('*' * 50, str(config_bucket), '*' * 50)
+        actual = config_bucket.get_object_info_file()
+        print(actual)
+        assert actual == 'aaaaaaaaaaaaaaa'