diff --git a/ecs/crm-datafetch/tests/aws/test_s3.py b/ecs/crm-datafetch/tests/aws/test_s3.py
index 61c3d352..f341cd2c 100644
--- a/ecs/crm-datafetch/tests/aws/test_s3.py
+++ b/ecs/crm-datafetch/tests/aws/test_s3.py
@@ -15,6 +15,28 @@ def s3_test(s3_client, bucket_name):
 
 class TestS3Resource:
 
+    def test_get_object(self, s3_test, s3_client, bucket_name):
+        s3_client.put_object(Bucket=bucket_name, Key='hogehoge/test.txt', Body=b'aaaaaaaaaaaaaaa')
+        s3_resource = S3Resource(bucket_name)
+        actual = s3_resource.get_object('hogehoge/test.txt')
+        assert actual == 'aaaaaaaaaaaaaaa'
+
     def test_put_object(self, s3_test, s3_client, bucket_name):
         s3_resource = S3Resource(bucket_name)
-        s3_resource.put_object('hogehoge', 'aaaaaaaaaaaaaaa')
+        s3_resource.put_object('hogehoge/test.txt', 'aaaaaaaaaaaaaaa')
+        actual = s3_client.get_object(Bucket=bucket_name, Key='hogehoge/test.txt')
+        assert actual['Body'].read() == b'aaaaaaaaaaaaaaa'
+
+    def test_copy(self, s3_test, s3_client, bucket_name):
+        for_copy_bucket = 'for-copy-bucket'
+        s3_client.create_bucket(Bucket=for_copy_bucket)
+        s3_client.put_object(Bucket=bucket_name, Key='hogehoge/test.txt', Body=b'aaaaaaaaaaaaaaa')
+        s3_resource = S3Resource(bucket_name)
+        s3_resource.copy(bucket_name, 'hogehoge/test.txt', for_copy_bucket, 'test.txt')
+        actual = s3_client.get_object(Bucket=for_copy_bucket, Key='test.txt')
+        assert actual['Body'].read() == b'aaaaaaaaaaaaaaa'
+
+    def test_init_raise_no_provide_bucket_name(self):
+        with pytest.raises(Exception) as e:
+            S3Resource()
+        assert e.value.args[0] == "__init__() missing 1 required positional argument: 'bucket_name'"